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| -rw-r--r-- | Master/texmf-dist/doc/latex/unravel/README | 34 | ||||
| -rw-r--r-- | Master/texmf-dist/doc/latex/unravel/unravel.pdf | bin | 0 -> 674252 bytes | |||
| -rw-r--r-- | Master/texmf-dist/source/latex/unravel/unravel.dtx | 7096 | ||||
| -rw-r--r-- | Master/texmf-dist/source/latex/unravel/unravel.ins | 23 | ||||
| -rw-r--r-- | Master/texmf-dist/tex/latex/unravel/unravel.sty | 4817 | ||||
| -rwxr-xr-x | Master/tlpkg/bin/tlpkg-ctan-check | 2 | ||||
| -rw-r--r-- | Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc | 1 | ||||
| -rw-r--r-- | Master/tlpkg/tlpsrc/unravel.tlpsrc | 0 |
8 files changed, 11972 insertions, 1 deletions
diff --git a/Master/texmf-dist/doc/latex/unravel/README b/Master/texmf-dist/doc/latex/unravel/README new file mode 100644 index 00000000000..b2dce6d2cc1 --- /dev/null +++ b/Master/texmf-dist/doc/latex/unravel/README @@ -0,0 +1,34 @@ +---------------------------------------------------------------- +unravel --- Watching TeX digest tokens +E-mail: blflatex@gmail.com +Released under the LaTeX Project Public License v1.3c or later +See http://www.latex-project.org/lppl.txt +---------------------------------------------------------------- + +The unravel LaTeX package provides tools to explore TeX code, +performing expansion and assignments step by step. + +TeX is a strange beast. Its eyes read files, making characters +into tokens. Its mouth then chews tokens, expanding them if +possible, namely, expanding user-defined macros, or conditionals, +etc. When meeting a so called ``unexpandable'' token, TeX's +stomach comes into play, performing assignments, or moving boxes +around, eventually typesetting the result thanks to its great +line- and page-breaking algorithms. + +All of this is interleaved, and difficult to follow. Of course, +one can always use \tracingall, but the result is... messy. +This package is an attempt to replicate how TeX digests tokens, +and to make the process easier to follow. Namely, +\unravel{\some\tokens} will let you go through expansions and +assignments performed by TeX upon seeing of ``\some\tokens'', +step by step. + +Some parts of TeX are not covered. In particular, category codes +are fixed for the whole argument of \unravel when it is read. + +This package requires up-to-date versions of the l3kernel, +l3packages, and l3experimental bundles. + +The package is extracted by running "pdflatex unravel.ins". +For documentation, run "pdflatex unravel.dtx" twice.
\ No newline at end of file diff --git a/Master/texmf-dist/doc/latex/unravel/unravel.pdf b/Master/texmf-dist/doc/latex/unravel/unravel.pdf Binary files differnew file mode 100644 index 00000000000..19a0e4fe3f1 --- /dev/null +++ b/Master/texmf-dist/doc/latex/unravel/unravel.pdf diff --git a/Master/texmf-dist/source/latex/unravel/unravel.dtx b/Master/texmf-dist/source/latex/unravel/unravel.dtx new file mode 100644 index 00000000000..1cd40dc4382 --- /dev/null +++ b/Master/texmf-dist/source/latex/unravel/unravel.dtx @@ -0,0 +1,7096 @@ +% \iffalse +%% File: unravel.dtx Copyright (C) 2013 Bruno Le Floch +%% +%% It may be distributed and/or modified under the conditions of the +%% LaTeX Project Public License (LPPL), either version 1.3c of this +%% license or (at your option) any later version. The latest version +%% of this license is in the file +%% +%% http://www.latex-project.org/lppl.txt +%% +%% ----------------------------------------------------------------------- +% +%<*driver> +%\fi +%\iffalse +\documentclass[full]{l3doc} +\usepackage{unravel} +\begin{document} + \DocInput{unravel.dtx} +\end{document} +%</driver> +% \fi +% +% \title{The \textsf{unravel} package: \\ +% watching TeX digest tokens\thanks{This +% file has version number 0.0a, last revised 2013/07/28.}} +% \author{Bruno Le Floch} +% \date{2013/07/28} +% +% \maketitle +% \tableofcontents +% +% \begin{documentation} +% +% \section{\pkg{unravel} documentation} +% +% The aim of this \LaTeX{} package is to help debug complicated macros. +% This is done by letting the user step through the execution of some +% \TeX{} code, going through the details of nested expansions, +% performing assignments, as well as some simple typesetting commands. +% The \pkg{unravel} package is currently based on the behaviour of +% \pdfTeX{}, but it should work in the \XeTeX{} and \LuaTeX{} engines as +% long as none of the primitives specific to those engines is used. Any +% difference between how \pkg{unravel} and (pdf)\TeX{} process a given +% piece of code, unless described in the section~\ref{sec:differences}, +% should be reported to Bruno Le Floch \texttt{<blflatex@gmail.com>}. +% +% The only public command is \cs{unravel}, used as \cs{unravel} +% \Arg{some tokens}. It will show on the terminal the various steps +% that \TeX{} performs, waiting for input from the user at each step. +% As a result, \pkg{unravel} can only be used meaningfully when \TeX{} +% is run in a terminal. +% +% As a simple example, one can run \LaTeX{} on the following file. +% \begin{verbatim} +% \documentclass{article} +% \usepackage{unravel} +% \unravel +% { +% \title{My title} +% \author{Me} +% \date{\today} +% } +% \begin{document} +% \maketitle +% \end{document} +% \end{verbatim} +% +% A more elaborate example is to understand how \tn{newcommand} works. +% \begin{verbatim} +% \documentclass{article} +% \usepackage{unravel} +% \begin{document} +% \unravel +% { +% \newcommand*{\foo}[1]{bar(#1)} +% \foo{3} +% } +% \end{document} +% \end{verbatim} +% +% The \pkg{unravel} package understands deeply nested expansions as can +% be seen for instance by unravelling functions from \pkg{l3fp}, such as +% with the following code (given the current default settings, this code +% runs for roughly 2000 steps: you can type |s1980| as a response to the +% prompt, then press ``enter'' a few times to see the last few steps of +% expansion). +% \begin{verbatim} +% \documentclass{article} +% \usepackage{unravel} +% \begin{document} +% \ExplSyntaxOn +% \unravel { \fp_eval:n { 3.45 * 2 pi } } +% \ExplSyntaxOff +% \end{document} +% \end{verbatim} +% +% Given all the work that \pkg{unravel} has to do to emulate \TeX{}, it +% is not fast on very large pieces of code. For instance, running it on +% |\documentclass{article}| takes about ten minutes on my machine, and +% finishes after slightly more than $20000$ steps. +% \begin{verbatim} +% \RequirePackage{unravel} +% \unravel{\documentclass{article}\relax} +% \usepackage{lipsum} +% \begin{document} +% \lipsum +% \end{document} +% \end{verbatim} +% The \tn{relax} command is needed after |\documentclass{article}| +% because this command tries to look for an optional argument: +% \cs{unravel} would not find any token, and would give up, as \TeX{} +% would if your file ended just after |\documentclass{article}|. After +% running the above through \pdfTeX{}, one can check that the result is +% identical to that without \pkg{unravel}. Note that +% \cs{unravel}|\usepackage{lipsum}\relax|, despite taking as many steps +% to complete, is four times slower, because \tn{newcommand} uses +% delimited arguments, which prevent some optimizations that +% \pkg{unravel} can otherwise obtain. For comparison, +% |\unravel{\lipsum[1-30]}|, which also takes $20000$ step, takes +% $8$~minutes to complete. +% +% \subsection{Differences between \pkg{unravel} and \TeX{}'s processing} +% \label{sec:differences} +% +% \begin{itemize} +% \item Alignments (\tn{halign}, \tn{valign}, \tn{noalign}, \tn{omit}, +% \tn{span}, \tn{cr}, \tn{crcr},~|&|) are not implemented. +% \item Math mode is not implemented, but might be. +% \item Some other primitives are not implemented (but they should claim +% so). +% \item For \pkg{unravel}, category codes are fixed when a file is read, +% while \TeX{} only fixes category codes when the corresponding +% characters are converted to tokens. Similarly, the argument of +% \tn{scantokens} is converted to the new category code r\'egime in +% one go, and the result must be balanced. +% \item Explicit begin-group and end-group characters other than the +% usual left and right braces will either make \pkg{unravel} choke or +% will be replaced by the usual left and right braces. +% \item \tn{endinput} is ignored, as it is not possible to implement it +% in a way similar to \TeX{}'s, and as it is most often used at the +% very end of files, in a redundant way. +% \item Negative signs and glue probably mix in wrong ways (this is a +% fixable bug, please tell me if it affects you). +% \end{itemize} +% +% \subsection{Future perhaps} +% +% \begin{itemize} +% \item Allow users to change some settings. +% \item Fix the display for \tn{if} and \tn{ifcat} (remove extraneous +% \cs{exp_not:N}). +% \end{itemize} +% +% \end{documentation} +% +% \begin{implementation} +% +% \section{\pkg{unravel} implementation} +% +% Some support packages are loaded first, then we declare the package's +% name, date, version, and purpose. +% +% \begin{macrocode} +%<*package> +% \end{macrocode} +% +% \begin{macrocode} +\RequirePackage{expl3}[2013/07/01] +\RequirePackage{l3str}[2013/04/24] +\RequirePackage{gtl}[2013/07/28] +\ProvidesExplPackage + {unravel} {2013/07/28} {0.0a} {Watching TeX digest tokens} +% \end{macrocode} +% +% \begin{macrocode} +%<@@=unravel> +% \end{macrocode} +% +% \subsection{Variables} +% +% \subsubsection{User interaction} +% +% \begin{variable} +% {\g_@@_prompt_ior, \g_@@_prompt_before_tl, \l_@@_prompt_tmpa_int} +% \begin{macrocode} +\ior_new:N \g_@@_prompt_ior +\tl_new:N \g_@@_prompt_before_tl +\int_new:N \l_@@_prompt_tmpa_int +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_nonstop_int, \g_@@_noise_int} +% The number of prompts to skip. +% \begin{macrocode} +\int_new:N \g_@@_nonstop_int +\int_new:N \g_@@_noise_int +\int_gset_eq:NN \g_@@_noise_int \c_one +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\l_@@_debug_bool} +% If true, debug-mode. Activated by \cs{UnravelDebug} +% \begin{macrocode} +\bool_new:N \l_@@_debug_bool +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_step_int} +% Current expansion step. +% \begin{macrocode} +\int_new:N \g_@@_step_int +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_action_text_str} +% Text describing the action, displayed at each step. This should +% only be altered through \cs{@@_set_action_text:x}, which sets the +% escape character as appropriate before converting the argument to a +% string. +% \begin{macrocode} +\str_new:N \g_@@_action_text_str +% \end{macrocode} +% \end{variable} +% +% ^^A todo: let the user fix those numbers. +% \begin{variable} +% { +% \g_@@_max_action_int, +% \g_@@_max_output_int, +% \g_@@_max_prev_int, +% \g_@@_max_input_int +% } +% Maximum length of various pieces of what is shown on the terminal. +% \begin{macrocode} +\int_new:N \g_@@_max_action_int +\int_new:N \g_@@_max_output_int +\int_new:N \g_@@_max_prev_int +\int_new:N \g_@@_max_input_int +\int_gset:Nn \g_@@_max_action_int { 50 } +\int_gset:Nn \g_@@_max_output_int { 300 } +\int_gset:Nn \g_@@_max_prev_int { 300 } +\int_gset:Nn \g_@@_max_input_int { 300 } +% \end{macrocode} +% \end{variable} +% +% ^^A todo: doc, and let user decide +% \begin{variable}{\g_@@_speedup_macros_bool} +% If this boolean is true, speed up macros which have a simple +% parameter text. This may not be safe if very weird macros appear. +% \begin{macrocode} +\bool_new:N \g_@@_speedup_macros_bool +\bool_gset_true:N \g_@@_speedup_macros_bool +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\l_@@_print_int} +% The length of one piece of the terminal output. +% \begin{macrocode} +\int_new:N \l_@@_print_int +% \end{macrocode} +% \end{variable} +% +% \subsubsection{Working with tokens} +% +% \begin{variable}{\g_@@_input_int} +% The user input, at each stage of expansion, is stored in multiple +% \texttt{gtl} variables, from |\g_@@_input_|\meta{n}|_gtl| to +% \cs{g_@@_input_1_gtl}. The split between variables is akin to +% \TeX{}'s input stack, and allows us to manipulate smaller token +% lists, speeding up processing. The total number \meta{n} of lists +% is \cs{g_@@_input_int}. The highest numbered \texttt{gtl} +% represents input that comes to the left of lower numbered ones. +% \begin{macrocode} +\int_new:N \g_@@_input_int +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_input_tmpa_int} +% \begin{variable}{\l_@@_input_tmpa_tl} +% \begin{macrocode} +\int_new:N \g_@@_input_tmpa_int +\tl_new:N \l_@@_input_tmpa_tl +% \end{macrocode} +% \end{variable} +% \end{variable} +% +% \begin{variable} +% {\g_@@_prev_input_seq, \l_@@_prev_input_tl, \l_@@_prev_input_gtl} +% ^^A todo: comment +% \begin{macrocode} +\seq_new:N \g_@@_prev_input_seq +\tl_new:N \l_@@_prev_input_tl +\gtl_new:N \l_@@_prev_input_gtl +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_output_gtl} +% Material that is ``typeset'' or otherwise sent further down \TeX{}'s +% digestion. +% \begin{macrocode} +\gtl_new:N \g_@@_output_gtl +% \end{macrocode} +% \end{variable} +% +% \begin{variable} +% { +% \l_@@_head_gtl, +% \l_@@_head_tl, +% \l_@@_head_token, +% \l_@@_head_cmd_int, +% \l_@@_head_char_int +% } +% First token in the input, as a generalized token list (general case) +% or as a token list whenever this is possible. Also, a token set +% equal to it, and its command code and character code, following +% \TeX{}. +% \begin{macrocode} +\gtl_new:N \l_@@_head_gtl +\tl_new:N \l_@@_head_tl +\token_new:Nn \l_@@_head_token { ? } +\int_new:N \l_@@_head_cmd_int +\int_new:N \l_@@_head_char_int +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\l_@@_head_meaning_tl} +% \begin{macrocode} +\tl_new:N \l_@@_head_meaning_tl +% \end{macrocode} +% \end{variable} +% +% \begin{variable} +% {\l_@@_tmpa_tl, \l_@@_tmpb_gtl, \g_@@_tmpc_tl, \l_@@_tmpa_seq} +% Temporary storage. +% \begin{macrocode} +\tl_new:N \l_@@_tmpa_tl +\gtl_new:N \l_@@_tmpb_gtl +\tl_new:N \g_@@_tmpc_tl +\seq_new:N \l_@@_tmpa_seq +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\l_@@_defined_tl, \l_@@_defining_tl} +% The token that is defined by the prefixed command (such as +% \tn{chardef} or \tn{futurelet}), and the code to define it. We do +% not use the \cs{g_@@_prev_input_seq} to store that code: rather, +% this sequence contains a string representation of the code, which is +% not suitable for the definition. This is safe, as definitions +% cannot be nested. This is needed for expanding assignments, as +% expansion should be shown to the user, but then later should not be +% performed again when defining. +% \begin{macrocode} +\tl_new:N \l_@@_defined_tl +\tl_new:N \l_@@_defining_tl +% \end{macrocode} +% \end{variable} +% +% \begin{macro}[int]{\@@_inaccessible:w} +% \begin{macrocode} +\cs_new_eq:NN \@@_inaccessible:w ? +% \end{macrocode} +% \end{macro} +% +% \begin{variable} +% { +% \g_@@_after_assignment_gtl, +% \g_@@_set_box_allowed_bool, +% \g_@@_name_in_progress_bool +% } +% Global variables keeping track of the state of \TeX{}. Token to +% insert after the next assignment. Is \tn{setbox} currently allowed? +% Should \tn{input} expand? +% \begin{macrocode} +\gtl_new:N \g_@@_after_assignment_gtl +\bool_new:N \g_@@_set_box_allowed_bool +\bool_new:N \g_@@_name_in_progress_bool +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\c_@@_parameters_tl} +% Used to determine if a macro has simple parameters or not. +% \begin{macrocode} +\group_begin: + \char_set_lccode:nn { `* } { `# } + \tex_lowercase:D + { \tl_const:Nn \c_@@_parameters_tl { ^*1*2*3*4*5*6*7*8*9 } } +\group_end: +% \end{macrocode} +% \end{variable} +% +% \subsubsection{Numbers and conditionals} +% +% \begin{variable}{\g_@@_val_level_int} +% See \TeX{}'s |cur_val_level| variable. This is set by +% \cs{@@_scan_something_internal:n} to +% \begin{itemize} +% \item $0$ for integer values, +% \item $1$ for dimension values, +% \item $2$ for glue values, +% \item $3$ for mu glue values, +% \item $4$ for font identifiers, +% \item $5$ for token lists. +% \end{itemize} +% \begin{macrocode} +\int_new:N \g_@@_val_level_int +% \end{macrocode} +% \end{variable} +% +% \begin{variable} +% { +% \c_@@_plus_tl, \c_@@_minus_tl, \c_@@_times_tl, \c_@@_over_tl, +% \c_@@_lq_tl, \c_@@_rq_tl, \c_@@_dq_tl, \c_@@_lp_tl, \c_@@_rp_tl, +% \c_@@_eq_tl, \c_@@_comma_tl, \c_@@_point_tl, +% } +% \begin{macrocode} +\tl_const:Nn \c_@@_plus_tl { + } +\tl_const:Nn \c_@@_minus_tl { - } +\tl_const:Nn \c_@@_times_tl { * } +\tl_const:Nn \c_@@_over_tl { / } +\tl_const:Nn \c_@@_lq_tl { ` } +\tl_const:Nn \c_@@_rq_tl { ' } +\tl_const:Nn \c_@@_dq_tl { " } +\tl_const:Nn \c_@@_lp_tl { ( } +\tl_const:Nn \c_@@_rp_tl { ) } +\tl_const:Nn \c_@@_eq_tl { = } +\tl_const:Nn \c_@@_comma_tl { , } +\tl_const:Nn \c_@@_point_tl { . } +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_if_limit_tl} +% \begin{variable}{\g_@@_if_limit_int} +% \begin{variable}{\g_@@_if_depth_int} +% Stack for what \TeX{} calls |if_limit|, and its depth. +% \begin{macrocode} +\tl_new:N \g_@@_if_limit_tl +\int_new:N \g_@@_if_limit_int +\int_new:N \g_@@_if_depth_int +% \end{macrocode} +% \end{variable} +% \end{variable} +% \end{variable} +% +% \begin{variable}{\l_@@_if_nesting_int} +% \begin{macrocode} +\int_new:N \l_@@_if_nesting_int +% \end{macrocode} +% \end{variable} +% +% \subsubsection{Boxes and groups} +% +% \begin{variable}{\l_@@_leaders_box_seq} +% A stack of letters: the first token in the token list is |h|~if the +% innermost explicit box (created with \tn{vtop}, \tn{vbox}, or +% \tn{hbox}) appears in a horizontal (or math) mode leaders +% construction; it is |v|~if the innermost explicit box appears in a +% vertical mode leaders construction; it is |Z|~otherwise. +% \begin{macrocode} +\seq_new:N \l_@@_leaders_box_seq +% \end{macrocode} +% \end{variable} +% +% \begin{variable}{\g_@@_ends_int} +% Number of times \tn{end} will be put back into the input in case +% there remains to ship some pages. +% \begin{macrocode} +\int_new:N \g_@@_ends_int +\int_gset:Nn \g_@@_ends_int { 3 } +% \end{macrocode} +% \end{variable} +% +% \subsubsection{Constants} +% +% \begin{variable}{\c_@@_frozen_relax_gtl} +% \TeX{}'s |frozen_relax|, inserted by \cs{@@_insert_relax:}. +% \begin{macrocode} +\gtl_const:Nx \c_@@_frozen_relax_gtl { \if_int_compare:w 0 = 0 \fi: } +% \end{macrocode} +% \end{variable} +% +% \subsection{Variants and helper functions} +% +% Variants that we need. +% \begin{macrocode} +\cs_if_exist:NF \exp_last_unbraced:NNn + { \cs_new_eq:NN \exp_last_unbraced:NNn \use:nnn } +\cs_generate_variant:Nn \exp_last_unbraced:NNn { NNv } +\cs_generate_variant:Nn \str_head:n { f } +\cs_generate_variant:Nn \tl_to_str:n { o } +\cs_generate_variant:Nn \tl_if_head_eq_meaning:nNT { V } +\cs_generate_variant:Nn \tl_if_head_is_space:nTF { o } +\cs_generate_variant:Nn \tl_if_head_is_space:nT { V } +\cs_generate_variant:Nn \tl_if_head_is_N_type:nTF { o } +\cs_generate_variant:Nn \tl_if_in:nnF { nV } +\cs_generate_variant:Nn \tl_if_in:nnTF { nV } +\cs_generate_variant:Nn \tl_if_eq:nnT { V } +\cs_generate_variant:Nn \tl_if_in:NnTF { No , NV } +\cs_generate_variant:Nn \tl_if_single_token:nT { V } +\cs_generate_variant:Nn \tl_gset_rescan:Nnn { Nnx } +\cs_generate_variant:Nn \gtl_gput_left:Nn { Nx , NV , No } +\cs_generate_variant:Nn \gtl_gput_right:Nn { Nx , NV } +\cs_generate_variant:Nn \gtl_put_right:Nn { NV } +\cs_generate_variant:Nn \ior_get_str:NN { Nc } +\cs_generate_variant:Nn \gtl_if_empty:NTF { c } +\cs_generate_variant:Nn \gtl_to_str:N { c } +\cs_generate_variant:Nn \gtl_gpop_left:NN { c } +\cs_generate_variant:Nn \gtl_get_left:NN { c } +\cs_generate_variant:Nn \gtl_gset:Nn { c } +\cs_generate_variant:Nn \gtl_gconcat:NNN { ccc , cNc } +\cs_generate_variant:Nn \gtl_gclear:N { c } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_tl_gset_input:Nnn, \@@_tl_gset_input:Nno} +% \begin{macro}[aux]{\@@_tl_gset_input_aux:wN} +% \begin{macrocode} +\cs_new_protected:Npn \@@_tl_gset_input:Nnn #1#2#3 + { + \group_begin: + \etex_everyeof:D \exp_after:wN { \token_to_str:N @ @ #1 } + #2 + \tl_gclear:N #1 + \str_if_eq_x:nnF + { \token_to_meaning:N \tex_input:D } + { \token_to_str:N \input } + { \msg_unravel:nnx { unravel } { internal } { input-prim } } + \exp_after:wN \@@_tl_gset_input_aux:wN + \exp_after:wN \prg_do_nothing: + \tex_input:D \tl_to_str:n {#3} \scan_stop: + \group_end: + \tl_gput_right:NV #1 \etex_everyeof:D + } +\cs_generate_variant:Nn \@@_tl_gset_input:Nnn { Nno } +\use:x + { + \cs_new_protected:Npn \exp_not:N \@@_tl_gset_input_aux:wN + ##1 \token_to_str:N @ @ ##2 + } { \tl_gset:No #2 {#1} } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[EXP]{\@@_cs_case:NnF} +% Currently, \texttt{expl3} does not provide a case statement for the +% meaning of control sequences. However, \cs{tl_case:NnF} in fact +% does precisely this. +% \begin{macrocode} +\cs_new_eq:NN \@@_cs_case:NnF \tl_case:NnF +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_strip_escape:w} +% \begin{macro}[aux]{\@@_strip_escape_aux:N, \@@_strip_escape_aux:w} +% This is based on the 2013-07-19 (and earlier) version of +% \cs{cs_to_str:N}. There are three cases. If the escape character +% is printable, the charcode test is false, and +% \cs{@@_strip_escape_aux:N} removes one character. If the escape +% character is a space, the charcode test is true, and if there is no +% escape charcter, the test is unfinished after |\token_to_str:N \ |. +% In both of those cases, \cs{@@_strip_escape_aux:w} inserts +% |-\__int_value:w \fi: \c_zero|. If the escape character was a +% space, the test was true, and \cs{__int_value:w} converts +% \cs{c_zero} to~|0|, hence the leading roman numeral expansion +% removes a space from what follows (it is important that what follows +% cannot start with a digit). Otherwise, the test takes~|-| as its +% second operand, is false, and the roman numeral expansion only sees +% \cs{c_zero}, thus does not remove anything from what follows. +% \begin{macrocode} +\cs_new_nopar:Npn \@@_strip_escape:w + { + \tex_romannumeral:D + \if_charcode:w \token_to_str:N \ \@@_strip_escape_aux:w \fi: + \@@_strip_escape_aux:N + } +\cs_new:Npn \@@_strip_escape_aux:N #1 { \c_zero } +\cs_new:Npn \@@_strip_escape_aux:w #1#2 + { - \__int_value:w #1 \c_zero } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_token_to_char:N} +% \begin{macro}[int]{\@@_meaning_to_char:n, \@@_meaning_to_char:o} +% \begin{macro}[aux] +% {\@@_meaning_to_char_auxi:w, \@@_meaning_to_char_auxii:w} +% From the meaning of a character token (with arbitrary character +% code, except active), extract the character itself (with string +% category codes). This is somewhat robust against wrong input. +% \begin{macrocode} +\cs_new:Npn \@@_meaning_to_char:n #1 + { \@@_meaning_to_char_auxi:w #1 \q_mark ~ {} ~ \q_mark \q_stop } +\cs_new:Npn \@@_meaning_to_char_auxi:w #1 ~ #2 ~ #3 \q_mark #4 \q_stop + { \@@_meaning_to_char_auxii:w #3 ~ #3 ~ \q_stop } +\cs_new:Npn \@@_meaning_to_char_auxii:w #1 ~ #2 ~ #3 \q_stop + { \tl_if_empty:nTF {#2} { ~ } {#2} } +\cs_generate_variant:Nn \@@_meaning_to_char:n { o } +\cs_new:Npn \@@_token_to_char:N #1 + { \@@_meaning_to_char:o { \token_to_meaning:N #1 } } +% \end{macrocode} +% \end{macro} +% \end{macro} +% \end{macro} +% +% ^^A this abuses future l3obj. +% \begin{macro}[int,EXP]{\@@_to_str:n} +% \begin{macro}[aux,EXP]{\@@_to_str_auxi:w, \@@_to_str_auxii:w} +% Use the type-appropriate conversion to string. +% \begin{macrocode} +\cs_new:Npn \@@_to_str:n #1 + { + \tl_if_head_eq_meaning:nNTF {#1} \scan_stop: + { \@@_to_str_auxi:w #1 ? \q_stop } + { \tl_to_str:n } + {#1} + } +\cs_set:Npn \@@_tmp:w #1 + { + \cs_new:Npn \@@_to_str_auxi:w ##1##2 \q_stop + { + \exp_after:wN \@@_to_str_auxii:w \token_to_str:N ##1 \q_mark + #1 tl \q_mark \q_stop + } + \cs_new:Npn \@@_to_str_auxii:w ##1 #1 ##2 \q_mark ##3 \q_stop + { \cs_if_exist_use:cF { ##2 _to_str:n } { \tl_to_str:n } } + } +\exp_args:No \@@_tmp:w { \tl_to_str:n { s__ } } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int] +% { +% \@@_prev_input_silent:n, +% \@@_prev_input_silent:V, +% \@@_prev_input_silent:x +% } +% \begin{macro}[int] +% { +% \@@_prev_input:n, +% \@@_prev_input:V, +% \@@_prev_input:x +% } +% \begin{macrocode} +\cs_new_protected:Npn \@@_prev_input_silent:n #1 + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_prev_input_tl + \tl_put_right:Nn \l_@@_prev_input_tl {#1} + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_prev_input_tl + } +\cs_generate_variant:Nn \@@_prev_input_silent:n { V , x } +\cs_new_protected:Npn \@@_prev_input:n #1 + { + \@@_prev_input_silent:n {#1} + \@@_print_action:x { \tl_to_str:n {#1} } + } +\cs_generate_variant:Nn \@@_prev_input:n { V , x } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_prev_input_gtl:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_prev_input_gtl:N #1 + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_prev_input_gtl + \gtl_concat:NNN \l_@@_prev_input_gtl \l_@@_prev_input_gtl #1 + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_prev_input_gtl + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,EXP,pTF]{\@@_token_if_expandable:N} +% We need to cook up our own version of \cs{token_if_expandable:NTF} +% because the \texttt{expl3} one does not think that |undefined| is +% expandable. +% \begin{macrocode} +\prg_new_conditional:Npnn \@@_token_if_expandable:N #1 + { p , T , F , TF } + { + \exp_after:wN \if_meaning:w \exp_not:N #1 #1 + \prg_return_false: + \else: + \prg_return_true: + \fi: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,EXP,pTF]{\@@_token_if_protected:N} +% Returns \texttt{true} if the token is either not expandable or is a +% protected macro. +% \begin{macrocode} +\prg_new_conditional:Npnn \@@_token_if_protected:N #1 + { p , T , F , TF } + { + \@@_token_if_expandable:NTF #1 + { + \token_if_protected_macro:NTF #1 + { \prg_return_true: } + { + \token_if_protected_long_macro:NTF #1 + { \prg_return_true: } + { \prg_return_false: } + } + } + { \prg_return_true: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,EXP]{\@@_exit:w, \@@_exit_point:} +% Jump to the very end of this instance of \cs{unravel}. +% \begin{macrocode} +\cs_new_eq:NN \@@_exit_point: \prg_do_nothing: +\cs_new:Npn \@@_exit:w #1 \@@_exit_point: { } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,EXP]{\@@_break:w, \@@_break_point:} +% Useful to jump out of complicated conditionals. +% \begin{macrocode} +\cs_new_eq:NN \@@_break_point: \prg_do_nothing: +\cs_new:Npn \@@_break:w #1 \@@_break_point: { } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,TF]{\@@_token_if_definable:N} +% Within a group, set the escape character to a non-zero non-space +% value (backslash): if the result of converting the token to a string +% is longer than a single token (false branch), the token was a +% control sequence and the test is \texttt{true} (note that we did not +% use \cs{tl_to_str:n}, as this would fail on explicit macro parameter +% characters). Otherwise, the token was an explicit character, active +% or not. Use \tn{lowercase} to convert the character to a fixed +% character code~|Z|. Compare with an active~|Z|. In all three +% outcomes, remember to end the group. +% \begin{macrocode} +\group_begin: + \char_set_catcode_active:n { `Z } + \prg_new_protected_conditional:Npnn \@@_token_if_definable:N #1 + { TF } + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \exp_args:No \tl_if_single:nTF { \token_to_str:N #1 } + { + \exp_args:Nx \char_set_lccode:nn + { ` \str_head:n {#1} } { `Z } + \tex_lowercase:D { \tl_if_eq:nnTF {#1} } { Z } + { \group_end: \prg_return_true: } + { \group_end: \prg_return_false: } + } + { \group_end: \prg_return_true: } + } +\group_end: +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,TF]{\@@_gtl_if_head_is_definable:N} +% Tests if a generalized token list is a single control sequence or a +% single active character. First test that it is single, then filter +% out the case of (explicit) begin-group, end-group, and blank space +% characters: those are neither control sequences nor active. Then +% feed the single normal token to a first auxiliary. +% \begin{macrocode} +\prg_new_protected_conditional:Npnn \@@_gtl_if_head_is_definable:N #1 + { TF , F } + { + \gtl_if_single_token:NTF #1 + { + \gtl_if_head_is_N_type:NTF #1 + { + \exp_last_unbraced:Nx \@@_token_if_definable:NTF + { \gtl_head:N #1 } + { \prg_return_true: } + { \prg_return_false: } + } + { \prg_return_false: } + } + { \prg_return_false: } + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Numeric codes} +% +% First we define some numeric codes, following Section~15 of the \TeX{} +% web code, then we associate a command code to each \TeX{} primitive, +% and a character code, to decide what action to perform upon seeing +% them. +% +% \begin{macro}[int]{\@@_tex_const:nn} +% \begin{macro}[int,EXP]{\@@_tex_use:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_tex_const:nn #1#2 + { \int_const:cn { c_@@_tex_#1_int } {#2} } +\cs_new:Npn \@@_tex_use:n #1 { \int_use:c { c_@@_tex_#1_int } } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_tex_primitive:nnn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_tex_primitive:nnn #1#2#3 + { + \tl_const:cx { c_@@_tex_#1_tl } + { { \@@_tex_use:n {#2} } {#3} } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_new_tex_cmd:nn, \@@_new_eq_tex_cmd:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_new_tex_cmd:nn #1#2 + { + \cs_new_protected_nopar:cpn + { @@_cmd_ \@@_tex_use:n {#1} : } {#2} + } +\cs_new_protected:Npn \@@_new_eq_tex_cmd:nn #1#2 + { + \cs_new_eq:cc + { @@_cmd_ \@@_tex_use:n {#1} : } + { @@_cmd_ \@@_tex_use:n {#2} : } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_new_tex_expandable:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_new_tex_expandable:nn #1#2 + { + \cs_new_protected_nopar:cpn + { @@_expandable_ \@@_tex_use:n {#1} : } {#2} + } +% \end{macrocode} +% \end{macro} +% +% Contrarily to \TeX{}, all macros are |call|, no |long_call| and the +% like. +% \begin{macrocode} +\@@_tex_const:nn { relax } { 0 } +\@@_tex_const:nn { begin-group_char } { 1 } +\@@_tex_const:nn { end-group_char } { 2 } +\@@_tex_const:nn { math_char } { 3 } +\@@_tex_const:nn { tab_mark } { 4 } +\@@_tex_const:nn { alignment_char } { 4 } +\@@_tex_const:nn { car_ret } { 5 } +\@@_tex_const:nn { macro_char } { 6 } +\@@_tex_const:nn { superscript_char } { 7 } +\@@_tex_const:nn { subscript_char } { 8 } +\@@_tex_const:nn { endv } { 9 } +\@@_tex_const:nn { blank_char } { 10 } +\@@_tex_const:nn { the_char } { 11 } +\@@_tex_const:nn { other_char } { 12 } +\@@_tex_const:nn { par_end } { 13 } +\@@_tex_const:nn { stop } { 14 } +\@@_tex_const:nn { delim_num } { 15 } +\@@_tex_const:nn { max_char_code } { 15 } +\@@_tex_const:nn { char_num } { 16 } +\@@_tex_const:nn { math_char_num } { 17 } +\@@_tex_const:nn { mark } { 18 } +\@@_tex_const:nn { xray } { 19 } +\@@_tex_const:nn { make_box } { 20 } +\@@_tex_const:nn { hmove } { 21 } +\@@_tex_const:nn { vmove } { 22 } +\@@_tex_const:nn { un_hbox } { 23 } +\@@_tex_const:nn { un_vbox } { 24 } +\@@_tex_const:nn { remove_item } { 25 } +\@@_tex_const:nn { hskip } { 26 } +\@@_tex_const:nn { vskip } { 27 } +\@@_tex_const:nn { mskip } { 28 } +\@@_tex_const:nn { kern } { 29 } +\@@_tex_const:nn { mkern } { 30 } +\@@_tex_const:nn { leader_ship } { 31 } +\@@_tex_const:nn { halign } { 32 } +\@@_tex_const:nn { valign } { 33 } +\@@_tex_const:nn { no_align } { 34 } +\@@_tex_const:nn { vrule } { 35 } +\@@_tex_const:nn { hrule } { 36 } +\@@_tex_const:nn { insert } { 37 } +\@@_tex_const:nn { vadjust } { 38 } +\@@_tex_const:nn { ignore_spaces } { 39 } +\@@_tex_const:nn { after_assignment } { 40 } +\@@_tex_const:nn { after_group } { 41 } +\@@_tex_const:nn { break_penalty } { 42 } +\@@_tex_const:nn { start_par } { 43 } +\@@_tex_const:nn { ital_corr } { 44 } +\@@_tex_const:nn { accent } { 45 } +\@@_tex_const:nn { math_accent } { 46 } +\@@_tex_const:nn { discretionary } { 47 } +\@@_tex_const:nn { eq_no } { 48 } +\@@_tex_const:nn { left_right } { 49 } +\@@_tex_const:nn { math_comp } { 50 } +\@@_tex_const:nn { limit_switch } { 51 } +\@@_tex_const:nn { above } { 52 } +\@@_tex_const:nn { math_style } { 53 } +\@@_tex_const:nn { math_choice } { 54 } +\@@_tex_const:nn { non_script } { 55 } +\@@_tex_const:nn { vcenter } { 56 } +\@@_tex_const:nn { case_shift } { 57 } +\@@_tex_const:nn { message } { 58 } +\@@_tex_const:nn { extension } { 59 } +\@@_tex_const:nn { in_stream } { 60 } +\@@_tex_const:nn { begin_group } { 61 } +\@@_tex_const:nn { end_group } { 62 } +\@@_tex_const:nn { omit } { 63 } +\@@_tex_const:nn { ex_space } { 64 } +\@@_tex_const:nn { no_boundary } { 65 } +\@@_tex_const:nn { radical } { 66 } +\@@_tex_const:nn { end_cs_name } { 67 } +\@@_tex_const:nn { min_internal } { 68 } +\@@_tex_const:nn { char_given } { 68 } +\@@_tex_const:nn { math_given } { 69 } +\@@_tex_const:nn { last_item } { 70 } +\@@_tex_const:nn { max_non_prefixed_command } { 70 } +\@@_tex_const:nn { toks_register } { 71 } +\@@_tex_const:nn { assign_toks } { 72 } +\@@_tex_const:nn { assign_int } { 73 } +\@@_tex_const:nn { assign_dimen } { 74 } +\@@_tex_const:nn { assign_glue } { 75 } +\@@_tex_const:nn { assign_mu_glue } { 76 } +\@@_tex_const:nn { assign_font_dimen } { 77 } +\@@_tex_const:nn { assign_font_int } { 78 } +\@@_tex_const:nn { set_aux } { 79 } +\@@_tex_const:nn { set_prev_graf } { 80 } +\@@_tex_const:nn { set_page_dimen } { 81 } +\@@_tex_const:nn { set_page_int } { 82 } +\@@_tex_const:nn { set_box_dimen } { 83 } +\@@_tex_const:nn { set_shape } { 84 } +\@@_tex_const:nn { def_code } { 85 } +\@@_tex_const:nn { def_family } { 86 } +\@@_tex_const:nn { set_font } { 87 } +\@@_tex_const:nn { def_font } { 88 } +\@@_tex_const:nn { register } { 89 } +\@@_tex_const:nn { max_internal } { 89 } +\@@_tex_const:nn { advance } { 90 } +\@@_tex_const:nn { multiply } { 91 } +\@@_tex_const:nn { divide } { 92 } +\@@_tex_const:nn { prefix } { 93 } +\@@_tex_const:nn { let } { 94 } +\@@_tex_const:nn { shorthand_def } { 95 } +\@@_tex_const:nn { read_to_cs } { 96 } +\@@_tex_const:nn { def } { 97 } +\@@_tex_const:nn { set_box } { 98 } +\@@_tex_const:nn { hyph_data } { 99 } +\@@_tex_const:nn { set_interaction } { 100 } +\@@_tex_const:nn { letterspace_font } { 101 } +\@@_tex_const:nn { pdf_copy_font } { 102 } +\@@_tex_const:nn { max_command } { 102 } +\@@_tex_const:nn { undefined_cs } { 103 } +\@@_tex_const:nn { expand_after } { 104 } +\@@_tex_const:nn { no_expand } { 105 } +\@@_tex_const:nn { input } { 106 } +\@@_tex_const:nn { if_test } { 107 } +\@@_tex_const:nn { fi_or_else } { 108 } +\@@_tex_const:nn { cs_name } { 109 } +\@@_tex_const:nn { convert } { 110 } +\@@_tex_const:nn { the } { 111 } +\@@_tex_const:nn { top_bot_mark } { 112 } +\@@_tex_const:nn { call } { 113 } +\@@_tex_const:nn { end_template } { 117 } +% \end{macrocode} +% So far we've implemented properly [71,104]; [107,113]. +% +% A few minor differences with pdf\TeX{}'s internal numbers are as +% follows. +% \begin{itemize} +% \item |case_shift| is shifted by |3983|. +% \item |assign_toks| is shifted by |local_base=3412|. +% \item |assign_int| is shifted by |int_base=5263|. +% \item |assign_dimen| is shifted by |dimen_base=5830|. +% \item |assign_glue| and |assign_mu_glue| are shifted by +% |glue_base=2882|. +% \item |set_shape| is shifted (in \eTeX{}) by |local_base|. +% \item |def_code| and |def_family| is shifted by |cat_code_base=3983|. +% \item In \TeX{}, |inputlineno.char=3| and |badness.char=4|. +% \end{itemize} +% \begin{macrocode} +\@@_tex_primitive:nnn { relax } { relax } { 256 } +\@@_tex_primitive:nnn { span } { tab_mark } { 256 } +\@@_tex_primitive:nnn { cr } { car_ret } { 257 } +\@@_tex_primitive:nnn { crcr } { car_ret } { 258 } +\@@_tex_primitive:nnn { par } { par_end } { 256 } +\@@_tex_primitive:nnn { end } { stop } { 0 } +\@@_tex_primitive:nnn { dump } { stop } { 1 } +\@@_tex_primitive:nnn { delimiter } { delim_num } { 0 } +\@@_tex_primitive:nnn { char } { char_num } { 0 } +\@@_tex_primitive:nnn { mathchar } { math_char_num } { 0 } +\@@_tex_primitive:nnn { mark } { mark } { 0 } +\@@_tex_primitive:nnn { marks } { mark } { 5 } +\@@_tex_primitive:nnn { show } { xray } { 0 } +\@@_tex_primitive:nnn { showbox } { xray } { 1 } +\@@_tex_primitive:nnn { showthe } { xray } { 2 } +\@@_tex_primitive:nnn { showlists } { xray } { 3 } +\@@_tex_primitive:nnn { showgroups } { xray } { 4 } +\@@_tex_primitive:nnn { showtokens } { xray } { 5 } +\@@_tex_primitive:nnn { showifs } { xray } { 6 } +\@@_tex_primitive:nnn { box } { make_box } { 0 } +\@@_tex_primitive:nnn { copy } { make_box } { 1 } +\@@_tex_primitive:nnn { lastbox } { make_box } { 2 } +\@@_tex_primitive:nnn { vsplit } { make_box } { 3 } +\@@_tex_primitive:nnn { vtop } { make_box } { 4 } +\@@_tex_primitive:nnn { vbox } { make_box } { 5 } +\@@_tex_primitive:nnn { hbox } { make_box } { 106 } +\@@_tex_primitive:nnn { moveright } { hmove } { 0 } +\@@_tex_primitive:nnn { moveleft } { hmove } { 1 } +\@@_tex_primitive:nnn { lower } { vmove } { 0 } +\@@_tex_primitive:nnn { raise } { vmove } { 1 } +\@@_tex_primitive:nnn { unhbox } { un_hbox } { 0 } +\@@_tex_primitive:nnn { unhcopy } { un_hbox } { 1 } +\@@_tex_primitive:nnn { unvbox } { un_vbox } { 0 } +\@@_tex_primitive:nnn { unvcopy } { un_vbox } { 1 } +\@@_tex_primitive:nnn { pagediscards } { un_vbox } { 2 } +\@@_tex_primitive:nnn { splitdiscards } { un_vbox } { 3 } +\@@_tex_primitive:nnn { unpenalty } { remove_item } { 12 } +\@@_tex_primitive:nnn { unkern } { remove_item } { 11 } +\@@_tex_primitive:nnn { unskip } { remove_item } { 10 } +\@@_tex_primitive:nnn { hfil } { hskip } { 0 } +\@@_tex_primitive:nnn { hfill } { hskip } { 1 } +\@@_tex_primitive:nnn { hss } { hskip } { 2 } +\@@_tex_primitive:nnn { hfilneg } { hskip } { 3 } +\@@_tex_primitive:nnn { hskip } { hskip } { 4 } +\@@_tex_primitive:nnn { vfil } { vskip } { 0 } +\@@_tex_primitive:nnn { vfill } { vskip } { 1 } +\@@_tex_primitive:nnn { vss } { vskip } { 2 } +\@@_tex_primitive:nnn { vfilneg } { vskip } { 3 } +\@@_tex_primitive:nnn { vskip } { vskip } { 4 } +\@@_tex_primitive:nnn { mskip } { mskip } { 5 } +\@@_tex_primitive:nnn { kern } { kern } { 1 } +\@@_tex_primitive:nnn { mkern } { mkern } { 99 } +\@@_tex_primitive:nnn { shipout } { leader_ship } { 99 } +\@@_tex_primitive:nnn { leaders } { leader_ship } { 100 } +\@@_tex_primitive:nnn { cleaders } { leader_ship } { 101 } +\@@_tex_primitive:nnn { xleaders } { leader_ship } { 102 } +\@@_tex_primitive:nnn { halign } { halign } { 0 } +\@@_tex_primitive:nnn { valign } { valign } { 0 } +\@@_tex_primitive:nnn { beginL } { valign } { 4 } +\@@_tex_primitive:nnn { endL } { valign } { 5 } +\@@_tex_primitive:nnn { beginR } { valign } { 8 } +\@@_tex_primitive:nnn { endR } { valign } { 9 } +\@@_tex_primitive:nnn { noalign } { no_align } { 0 } +\@@_tex_primitive:nnn { vrule } { vrule } { 0 } +\@@_tex_primitive:nnn { hrule } { hrule } { 0 } +\@@_tex_primitive:nnn { insert } { insert } { 0 } +\@@_tex_primitive:nnn { vadjust } { vadjust } { 0 } +\@@_tex_primitive:nnn { ignorespaces } { ignore_spaces } { 0 } +\@@_tex_primitive:nnn { afterassignment } { after_assignment } { 0 } +\@@_tex_primitive:nnn { aftergroup } { after_group } { 0 } +\@@_tex_primitive:nnn { penalty } { break_penalty } { 0 } +\@@_tex_primitive:nnn { indent } { start_par } { 1 } +\@@_tex_primitive:nnn { noindent } { start_par } { 0 } +\@@_tex_primitive:nnn { quitvmode } { start_par } { 2 } +\@@_tex_primitive:nnn { / } { ital_corr } { 0 } +\@@_tex_primitive:nnn { accent } { accent } { 0 } +\@@_tex_primitive:nnn { mathaccent } { math_accent } { 0 } +\@@_tex_primitive:nnn { - } { discretionary } { 1 } +\@@_tex_primitive:nnn { discretionary } { discretionary } { 0 } +\@@_tex_primitive:nnn { eqno } { eq_no } { 0 } +\@@_tex_primitive:nnn { leqno } { eq_no } { 1 } +\@@_tex_primitive:nnn { left } { left_right } { 30 } +\@@_tex_primitive:nnn { right } { left_right } { 31 } +\@@_tex_primitive:nnn { middle } { left_right } { 17 } +\@@_tex_primitive:nnn { mathord } { math_comp } { 16 } +\@@_tex_primitive:nnn { mathop } { 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+\@@_tex_primitive:nnn { spaceskip } { assign_glue } { 12 } +\@@_tex_primitive:nnn { xspaceskip } { assign_glue } { 13 } +\@@_tex_primitive:nnn { parfillskip } { assign_glue } { 14 } +\@@_tex_primitive:nnn { thinmuskip } { assign_mu_glue } { 15 } +\@@_tex_primitive:nnn { medmuskip } { assign_mu_glue } { 16 } +\@@_tex_primitive:nnn { thickmuskip } { assign_mu_glue } { 17 } +\@@_tex_primitive:nnn { fontdimen } { assign_font_dimen } { 0 } +\@@_tex_primitive:nnn { hyphenchar } { assign_font_int } { 0 } +\@@_tex_primitive:nnn { skewchar } { assign_font_int } { 1 } +\@@_tex_primitive:nnn { lpcode } { assign_font_int } { 2 } +\@@_tex_primitive:nnn { rpcode } { assign_font_int } { 3 } +\@@_tex_primitive:nnn { efcode } { assign_font_int } { 4 } +\@@_tex_primitive:nnn { tagcode } { assign_font_int } { 5 } +\@@_tex_primitive:nnn { pdfnoligatures } { assign_font_int } { 6 } +\@@_tex_primitive:nnn { knbscode } { assign_font_int } { 7 } +\@@_tex_primitive:nnn { stbscode } { assign_font_int } { 8 } +\@@_tex_primitive:nnn { shbscode } { assign_font_int } { 9 } +\@@_tex_primitive:nnn { knbccode } { assign_font_int } { 10 } +\@@_tex_primitive:nnn { knaccode } { assign_font_int } { 11 } +\@@_tex_primitive:nnn { spacefactor } { set_aux } { 102 } +\@@_tex_primitive:nnn { prevdepth } { set_aux } { 1 } +\@@_tex_primitive:nnn { prevgraf } { set_prev_graf } { 0 } +\@@_tex_primitive:nnn { pagegoal } { set_page_dimen } { 0 } +\@@_tex_primitive:nnn { pagetotal } { set_page_dimen } { 1 } +\@@_tex_primitive:nnn { pagestretch } { set_page_dimen } { 2 } +\@@_tex_primitive:nnn { pagefilstretch } { set_page_dimen } { 3 } +\@@_tex_primitive:nnn { pagefillstretch } { set_page_dimen } { 4 } +\@@_tex_primitive:nnn { pagefilllstretch } { set_page_dimen } { 5 } +\@@_tex_primitive:nnn { pageshrink } { set_page_dimen } { 6 } +\@@_tex_primitive:nnn { pagedepth } { set_page_dimen } { 7 } +\@@_tex_primitive:nnn { deadcycles } { set_page_int } { 0 } +\@@_tex_primitive:nnn { insertpenalties } { set_page_int } { 1 } +\@@_tex_primitive:nnn { interactionmode } { set_page_int } { 2 } +\@@_tex_primitive:nnn { wd } { set_box_dimen } { 1 } +\@@_tex_primitive:nnn { dp } { set_box_dimen } { 2 } +\@@_tex_primitive:nnn { ht } { set_box_dimen } { 3 } +\@@_tex_primitive:nnn { parshape } { set_shape } { 0 } +\@@_tex_primitive:nnn { interlinepenalties } { set_shape } { 1 } +\@@_tex_primitive:nnn { clubpenalties } { set_shape } { 2 } +\@@_tex_primitive:nnn { widowpenalties } { set_shape } { 3 } +\@@_tex_primitive:nnn { displaywidowpenalties } { set_shape } { 4 } +\@@_tex_primitive:nnn { catcode } { def_code } { 0 } +\@@_tex_primitive:nnn { lccode } { def_code } { 256 } +\@@_tex_primitive:nnn { uccode } { def_code } { 512 } +\@@_tex_primitive:nnn { sfcode } { def_code } { 768 } +\@@_tex_primitive:nnn { mathcode } { def_code } { 1024 } +\@@_tex_primitive:nnn { delcode } { def_code } { 1591 } +\@@_tex_primitive:nnn { textfont } { def_family } { -48 } +\@@_tex_primitive:nnn { scriptfont } { def_family } { -32 } +\@@_tex_primitive:nnn { scriptscriptfont } { def_family } { -16 } +\@@_tex_primitive:nnn { nullfont } { set_font } { 0 } +\@@_tex_primitive:nnn { font } { def_font } { 0 } +\@@_tex_primitive:nnn { count } { register } { 1 000 000 } +\@@_tex_primitive:nnn { dimen } { register } { 2 000 000 } +\@@_tex_primitive:nnn { skip } { register } { 3 000 000 } +\@@_tex_primitive:nnn { muskip } { register } { 4 000 000 } +\@@_tex_primitive:nnn { advance } { advance } { 0 } +\@@_tex_primitive:nnn { multiply } { multiply } { 0 } +\@@_tex_primitive:nnn { divide } { divide } { 0 } +\@@_tex_primitive:nnn { long } { prefix } { 1 } +\@@_tex_primitive:nnn { outer } { prefix } { 2 } +\@@_tex_primitive:nnn { global } { prefix } { 4 } +\@@_tex_primitive:nnn { protected } { prefix } { 8 } +\@@_tex_primitive:nnn { let } { let } { 0 } +\@@_tex_primitive:nnn { futurelet } { let } { 1 } +\@@_tex_primitive:nnn { chardef } { shorthand_def } { 0 } +\@@_tex_primitive:nnn { mathchardef } { shorthand_def } { 1 } +\@@_tex_primitive:nnn { countdef } { shorthand_def } { 2 } +\@@_tex_primitive:nnn { dimendef } { shorthand_def } { 3 } +\@@_tex_primitive:nnn { skipdef } { shorthand_def } { 4 } +\@@_tex_primitive:nnn { muskipdef } { shorthand_def } { 5 } +\@@_tex_primitive:nnn { toksdef } { shorthand_def } { 6 } +\@@_tex_primitive:nnn { read } { read_to_cs } { 0 } +\@@_tex_primitive:nnn { readline } { read_to_cs } { 1 } +\@@_tex_primitive:nnn { def } { def } { 0 } +\@@_tex_primitive:nnn { gdef } { def } { 1 } +\@@_tex_primitive:nnn { edef } { def } { 2 } +\@@_tex_primitive:nnn { xdef } { def } { 3 } +\@@_tex_primitive:nnn { setbox } { set_box } { 0 } +\@@_tex_primitive:nnn { hyphenation } { hyph_data } { 0 } +\@@_tex_primitive:nnn { patterns } { hyph_data } { 1 } +\@@_tex_primitive:nnn { batchmode } { set_interaction } { 0 } +\@@_tex_primitive:nnn { nonstopmode } { set_interaction } { 1 } +\@@_tex_primitive:nnn { scrollmode } { set_interaction } { 2 } +\@@_tex_primitive:nnn { errorstopmode } { set_interaction } { 3 } +\@@_tex_primitive:nnn { letterspacefont } { letterspace_font } { 0 } +\@@_tex_primitive:nnn { pdfcopyfont } { pdf_copy_font } { 0 } +\@@_tex_primitive:nnn { undefined } { undefined_cs } { 0 } +\@@_tex_primitive:nnn { ndefined } { undefined_cs } { 0 } +\@@_tex_primitive:nnn { expandafter } { expand_after } { 0 } +\@@_tex_primitive:nnn { unless } { expand_after } { 1 } +\@@_tex_primitive:nnn { pdfprimitive } { no_expand } { 1 } +\@@_tex_primitive:nnn { noexpand } { no_expand } { 0 } +\@@_tex_primitive:nnn { input } { input } { 0 } +\@@_tex_primitive:nnn { endinput } { input } { 1 } +\@@_tex_primitive:nnn { scantokens } { input } { 2 } +\@@_tex_primitive:nnn { if } { if_test } { 0 } +\@@_tex_primitive:nnn { ifcat } { if_test } { 1 } +\@@_tex_primitive:nnn { ifnum } { if_test } { 2 } +\@@_tex_primitive:nnn { ifdim } { if_test } { 3 } +\@@_tex_primitive:nnn { ifodd } { if_test } { 4 } +\@@_tex_primitive:nnn { ifvmode } { if_test } { 5 } +\@@_tex_primitive:nnn { ifhmode } { if_test } { 6 } +\@@_tex_primitive:nnn { ifmmode } { if_test } { 7 } +\@@_tex_primitive:nnn { ifinner } { if_test } { 8 } +\@@_tex_primitive:nnn { ifvoid } { if_test } { 9 } +\@@_tex_primitive:nnn { ifhbox } { if_test } { 10 } +\@@_tex_primitive:nnn { ifvbox } { if_test } { 11 } +\@@_tex_primitive:nnn { ifx } { if_test } { 12 } +\@@_tex_primitive:nnn { ifeof } { if_test } { 13 } +\@@_tex_primitive:nnn { iftrue } { if_test } { 14 } +\@@_tex_primitive:nnn { iffalse } { if_test } { 15 } +\@@_tex_primitive:nnn { ifcase } { if_test } { 16 } +\@@_tex_primitive:nnn { ifdefined } { if_test } { 17 } +\@@_tex_primitive:nnn { ifcsname } { if_test } { 18 } +\@@_tex_primitive:nnn { iffontchar } { if_test } { 19 } +\@@_tex_primitive:nnn { ifincsname } { if_test } { 20 } +\@@_tex_primitive:nnn { ifpdfprimitive } { if_test } { 21 } +\@@_tex_primitive:nnn { ifpdfabsnum } { if_test } { 22 } +\@@_tex_primitive:nnn { ifpdfabsdim } { if_test } { 23 } +\@@_tex_primitive:nnn { fi } { fi_or_else } { 2 } +\@@_tex_primitive:nnn { else } { fi_or_else } { 3 } +\@@_tex_primitive:nnn { or } { fi_or_else } { 4 } +\@@_tex_primitive:nnn { csname } { cs_name } { 0 } +\@@_tex_primitive:nnn { number } { convert } { 0 } +\@@_tex_primitive:nnn { romannumeral } { convert } { 1 } +\@@_tex_primitive:nnn { string } { convert } { 2 } +\@@_tex_primitive:nnn { meaning } { convert } { 3 } +\@@_tex_primitive:nnn { fontname } { convert } { 4 } +\@@_tex_primitive:nnn { eTeXrevision } { convert } { 5 } +\@@_tex_primitive:nnn { pdftexrevision } { convert } { 6 } +\@@_tex_primitive:nnn { pdftexbanner } { convert } { 7 } +\@@_tex_primitive:nnn { pdffontname } { convert } { 8 } +\@@_tex_primitive:nnn { pdffontobjnum } { convert } { 9 } +\@@_tex_primitive:nnn { pdffontsize } { convert } { 10 } +\@@_tex_primitive:nnn { pdfpageref } { convert } { 11 } +\@@_tex_primitive:nnn { pdfxformname } { convert } { 12 } +\@@_tex_primitive:nnn { pdfescapestring } { convert } { 13 } +\@@_tex_primitive:nnn { pdfescapename } { convert } { 14 } +\@@_tex_primitive:nnn { leftmarginkern } { convert } { 15 } +\@@_tex_primitive:nnn { rightmarginkern } { convert } { 16 } +\@@_tex_primitive:nnn { pdfstrcmp } { convert } { 17 } +\@@_tex_primitive:nnn { pdfcolorstackinit } { convert } { 18 } +\@@_tex_primitive:nnn { pdfescapehex } { convert } { 19 } +\@@_tex_primitive:nnn { pdfunescapehex } { convert } { 20 } +\@@_tex_primitive:nnn { pdfcreationdate } { convert } { 21 } +\@@_tex_primitive:nnn { pdffilemoddate } { convert } { 22 } +\@@_tex_primitive:nnn { pdffilesize } { convert } { 23 } +\@@_tex_primitive:nnn { pdfmdfivesum } { convert } { 24 } +\@@_tex_primitive:nnn { pdffiledump } { convert } { 25 } +\@@_tex_primitive:nnn { pdfmatch } { convert } { 26 } +\@@_tex_primitive:nnn { pdflastmatch } { convert } { 27 } +\@@_tex_primitive:nnn { pdfuniformdeviate } { convert } { 28 } +\@@_tex_primitive:nnn { pdfnormaldeviate } { convert } { 29 } +\@@_tex_primitive:nnn { pdfinsertht } { convert } { 30 } +\@@_tex_primitive:nnn { pdfximagebbox } { convert } { 31 } +\@@_tex_primitive:nnn { jobname } { convert } { 32 } +\@@_tex_primitive:nnn { the } { the } { 0 } +\@@_tex_primitive:nnn { unexpanded } { the } { 1 } +\@@_tex_primitive:nnn { detokenize } { the } { 5 } +\@@_tex_primitive:nnn { topmark } { top_bot_mark } { 0 } +\@@_tex_primitive:nnn { firstmark } { top_bot_mark } { 1 } +\@@_tex_primitive:nnn { botmark } { top_bot_mark } { 2 } +\@@_tex_primitive:nnn { splitfirstmark } { top_bot_mark } { 3 } +\@@_tex_primitive:nnn { splitbotmark } { top_bot_mark } { 4 } +\@@_tex_primitive:nnn { topmarks } { top_bot_mark } { 5 } +\@@_tex_primitive:nnn { firstmarks } { top_bot_mark } { 6 } +\@@_tex_primitive:nnn { botmarks } { top_bot_mark } { 7 } +\@@_tex_primitive:nnn { splitfirstmarks } { top_bot_mark } { 8 } +\@@_tex_primitive:nnn { splitbotmarks } { top_bot_mark } { 9 } +% \end{macrocode} +% +% \subsection{Get next token} +% +% We define here two functions which fetch the next token in the token +% list. +% \begin{itemize} +% \item \cs{@@_get_next:} sets \cs{l_@@_head_gtl}, \cs{l_@@_head_token}, +% and if possible \cs{l_@@_head_tl} (otherwise it is cleared). +% \item \cs{@@_get_token:} additionally sets \cs{l_@@_head_cmd_int} and +% \cs{l_@@_head_char_int}. +% \end{itemize} +% The latter is based on \cs{@@_set_cmd:} which derives the +% \cs{l_@@_head_cmd_int} and \cs{l_@@_head_char_int} from +% \cs{l_@@_head_token}. +% +% \begin{macro}[int]{\@@_get_next:} +% \begin{macro}[aux]{\@@_get_next_aux:w} +% If the input is empty, forcefully exit. Otherwise, +% remove the first token in the input, and store it in +% \cs{l_@@_head_gtl}. Set \cs{l_@@_head_token} equal in meaning to +% that first token. Then set \cs{l_@@_head_tl} to contain the token, +% unless it is a begin-group or end-group character, in which case +% this token list is emptied. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_next: + { + \@@_input_if_empty:TF + { \@@_exit:w } + { + \@@_input_gpop:N \l_@@_head_gtl + \gtl_head_do:NN \l_@@_head_gtl \@@_get_next_aux:w + \gtl_if_tl:NTF \l_@@_head_gtl + { + \tl_set:Nx \l_@@_head_tl + { \gtl_head:N \l_@@_head_gtl } + } + { \tl_clear:N \l_@@_head_tl } + } + } +\cs_new_protected_nopar:Npn \@@_get_next_aux:w + { \cs_set_eq:NN \l_@@_head_token } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_get_token:} +% Call \cs{@@_get_next:} to set \cs{l_@@_head_gtl}, \cs{l_@@_head_tl} +% and \cs{l_@@_head_token}, then call \cs{@@_set_cmd:} to set +% \cs{l_@@_head_cmd_int} and \cs{l_@@_head_char_int}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_token: + { + \@@_get_next: + \@@_set_cmd: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_set_cmd:} +% After the call to \cs{@@_get_next:}, we find the command code +% \cs{l_@@_head_cmd_int} and the character code +% \cs{l_@@_head_char_int}, based only on \cs{l_@@_head_token}. First +% set \cs{l_@@_head_meaning_tl} from the \tn{meaning} of the first +% token. If the corresponding primitive exists, use the information +% to set the two integers. If the token is expandable, it can either +% be a macro or be a primitive that we somehow do not know +% (\emph{e.g.}, an expandable \XeTeX{} or \LuaTeX{} primitive +% perhaps). Otherwise, it can be a control sequence or a character. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd: + { + \@@_set_cmd_aux_meaning: + \@@_set_cmd_aux_primitive:oTF { \l_@@_head_meaning_tl } + { } + { + \@@_token_if_expandable:NTF \l_@@_head_token + { + \token_if_macro:NTF \l_@@_head_token + { \@@_set_cmd_aux_macro: } + { \@@_set_cmd_aux_unknown: } + } + { + \token_if_cs:NTF \l_@@_head_token + { \@@_set_cmd_aux_cs: } + { \@@_set_cmd_aux_char: } + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_set_cmd_aux_meaning:} +% \begin{macro}[aux,EXP]{\@@_set_cmd_aux_meaning:w} +% Remove the leading escape character (\cs{@@_strip_escape:w} takes +% care of special cases there) from the \tn{meaning} of the first +% token, then remove anything after the first~|:|, which is present +% for macros, for marks, and for that character too. For any +% primitive except \tn{nullfont}, this leaves the primitive's name. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_meaning: + { + \tl_set:Nx \l_@@_head_meaning_tl + { + \exp_after:wN \@@_strip_escape:w + \token_to_meaning:N \l_@@_head_token + \tl_to_str:n { : } + } + \tl_set:Nx \l_@@_head_meaning_tl + { + \exp_after:wN \@@_set_cmd_aux_meaning:w + \l_@@_head_meaning_tl \q_stop + } + } +\use:x + { + \cs_new:Npn \exp_not:N \@@_set_cmd_aux_meaning:w + ##1 \token_to_str:N : ##2 \exp_not:N \q_stop {##1} + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux] +% {\@@_set_cmd_aux_primitive:nTF, \@@_set_cmd_aux_primitive:oTF} +% \begin{macro}[aux]{\@@_set_cmd_aux_primitive:nn} +% Test if there is any information about the given (cleaned-up) +% \tn{meaning}. If there is, use that as the command and character +% integers. +% \begin{macrocode} +\cs_new_protected:Npn \@@_set_cmd_aux_primitive:nTF #1#2 + { + \cs_if_exist:cTF { c_@@_tex_#1_tl } + { + \exp_last_unbraced:Nv \@@_set_cmd_aux_primitive:nn + { c_@@_tex_#1_tl } + #2 + } + } +\cs_generate_variant:Nn \@@_set_cmd_aux_primitive:nTF { o } +\cs_new_protected:Npn \@@_set_cmd_aux_primitive:nn #1#2 + { + \int_set:Nn \l_@@_head_cmd_int {#1} + \int_set:Nn \l_@@_head_char_int {#2} + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% ^^A todo: should we worry about call vs long_call etc.? +% \begin{macro}[aux]{\@@_set_cmd_aux_macro:} +% The token is a macro. For now we do not test if the macro is +% long/outer. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_macro: + { + \int_set:Nn \l_@@_head_cmd_int { \@@_tex_use:n { call } } + \int_zero:N \l_@@_head_char_int + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_set_cmd_aux_unknown:} +% Complain about an unknown primitive, and consider it as if it were +% \tn{relax}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_unknown: + { + \exp_last_unbraced:NV \@@_set_cmd_aux_primitive:nn + \c_@@_tex_relax_tl + \msg_error:nnx { unravel } { unknown-primitive } + { \l_@@_head_meaning_tl } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_set_cmd_aux_cs:} +% If the \tn{meaning} contains \verb*|elect font|, the control +% sequence is \tn{nullfont} or similar (note that we do not search for +% \verb*|select font|, as the code to trim the escape character from +% the meaning may have removed the leading~|s|). Otherwise, we expect +% the \tn{meaning} to be \tn{char} or \tn{mathchar} followed by +% |"|~and an uppercase hexadecimal number, or one of \tn{count}, +% \tn{dimen}, \tn{skip}, \tn{muskip} or \tn{toks} followed by a +% decimal number. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_cs: + { + \tl_if_in:NoTF \l_@@_head_meaning_tl + { \tl_to_str:n { elect~font } } + { + \exp_last_unbraced:NV \@@_set_cmd_aux_primitive:nn + \c_@@_tex_nullfont_tl + } + { \@@_set_cmd_aux_numeric: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux] +% { +% \@@_set_cmd_aux_numeric:, +% \@@_set_cmd_aux_numeric:w, +% \@@_set_cmd_aux_given:n +% } +% \begin{macro}[aux,rEXP]{\@@_set_cmd_aux_numeric:N} +% Insert \cs{q_mark} before the first non-letter (in fact, anything +% less than~|A|) in the \tn{meaning} by looping one character at a +% time (skipping spaces, but there should be none). We expect the +% first part to be |char| or~|mathchar|, or one of |count|, |dimen|, +% |skip|, |muskip|, or |toks|. In the first two cases, the command is +% |char_given| or |math_given|. It is otherwise identical to the +% corresponding primitive (\tn{count} \emph{etc.}). We then keep +% track of the associated number (part after \cs{q_mark}) in +% \cs{l_@@_head_char_int}. For unknown non-expandable primitives, +% assuming that their meaning consists solely of letters, the +% \cs{q_mark} is inserted at their end, and is followed by~|+0|, so +% nothing breaks. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_numeric: + { + \tl_set:Nx \l_@@_tmpa_tl + { + \exp_after:wN \@@_set_cmd_aux_numeric:N + \l_@@_head_meaning_tl + 0 + } + \exp_after:wN \@@_set_cmd_aux_numeric:w + \l_@@_tmpa_tl \q_stop + } +\cs_new:Npn \@@_set_cmd_aux_numeric:N #1 + { + \if_int_compare:w `#1 < `A \exp_stop_f: + \exp_not:N \q_mark + \exp_after:wN \use_i:nn + \fi: + #1 \@@_set_cmd_aux_numeric:N + } +\cs_new_protected:Npn \@@_set_cmd_aux_numeric:w #1 \q_mark #2 \q_stop + { + \str_case:nnF {#1} + { + { char } { \@@_set_cmd_aux_given:n { char_given } } + { mathchar } { \@@_set_cmd_aux_given:n { math_given } } + } + { + \@@_set_cmd_aux_primitive:nTF {#1} + { } + { \@@_set_cmd_aux_unknown: } + \int_add:Nn \l_@@_head_char_int { 100 000 } + } + \int_add:Nn \l_@@_head_char_int {#2} + } +\cs_new_protected:Npn \@@_set_cmd_aux_given:n #1 + { + \int_set:Nn \l_@@_head_cmd_int { \@@_tex_use:n {#1} } + \int_zero:N \l_@@_head_char_int + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_set_cmd_aux_char:} +% \begin{macro}[aux]{\@@_set_cmd_aux_char:w} +% At this point, the \tn{meaning} token list has been shortened by the +% code meant to remove the escape character. We thus set it again to +% the \tn{meaning} of the leading token. The command is then the +% first word (delimited by a space) of the \tn{meaning}, followed by +% |_char|, except for category other, where we use |other_char|. For +% the character code, there is a need to expand +% \cs{@@_token_to_char:N} before placing~|`|. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_cmd_aux_char: + { + \tl_set:Nx \l_@@_head_meaning_tl + { \token_to_meaning:N \l_@@_head_token } + \token_if_eq_catcode:NNT \l_@@_head_token \c_catcode_other_token + { \tl_set:Nn \l_@@_head_meaning_tl { other~ } } + \exp_after:wN \@@_set_cmd_aux_char:w + \l_@@_head_meaning_tl \q_stop + \exp_args:NNx \int_set:Nn \l_@@_head_char_int + { ` \@@_token_to_char:N \l_@@_head_token } + } +\cs_new_protected:Npn \@@_set_cmd_aux_char:w #1 ~ #2 \q_stop + { + \int_set:Nn \l_@@_head_cmd_int + { \@@_tex_use:n { #1_char } } + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \subsection{Manipulating the input} +% +% \subsubsection{Elementary operations} +% +% \begin{macro}[int,rEXP]{\@@_input_to_str:} +% Map \cs{gtl_to_str:c} through the input stack. +% \begin{macrocode} +\cs_new_nopar:Npn \@@_input_to_str: + { + \int_step_function:nnnN \g_@@_input_int { -1 } { 1 } + \@@_input_to_str_aux:n + } +\cs_new:Npn \@@_input_to_str_aux:n #1 + { \gtl_to_str:c { g_@@_input_#1_gtl } } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_input_if_empty:TF} +% If the input stack is empty, the input contains no token. +% Otherwise, check the top of the stack for tokens: if there are, then +% the input is non-empty, and if there are none, then we get rid of +% the top of stack and loop. +% \begin{macrocode} +\cs_new_protected:Npn \@@_input_if_empty:TF + { + \int_compare:nNnTF \g_@@_input_int = \c_zero + { \use_i:nn } + { + \gtl_if_empty:cTF + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + { + \int_gdecr:N \g_@@_input_int + \@@_input_if_empty:TF + } + { + \@@_input_split: + \use_ii:nn + } + } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: "timeit" to know if \@@_input_split: is beneficial. +% +% \begin{macro}[int]{\@@_input_split:} +% If the input is completely flat, and is a token list starting with +% an |N|-type token, try to unflatten it by splitting at each +% occurence of that first character +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_input_split: + { + \int_compare:nNnT \g_@@_input_int = \c_one + { + \exp_args:Nc \@@_input_split_aux:N + { g_@@_input_1_gtl } + } + } +\cs_new_protected:Npn \@@_input_split_aux:N #1 + { + \gtl_if_tl:NT #1 + { + \gtl_if_head_is_N_type:NT #1 + { + \tl_set:Nx \l_@@_input_tmpa_tl { \gtl_left_tl:N #1 } + \exp_last_unbraced:Nx \@@_input_split_auxii:N + { \tl_head:N \l_@@_input_tmpa_tl } + } + } + } +\cs_new_protected:Npn \@@_input_split_auxii:N #1 + { + \token_if_parameter:NF #1 + { + \tl_replace_all:Nnn \l_@@_input_tmpa_tl {#1} + { \@@_input_split_end: \@@_input_split_auxiii:w #1 } + \group_begin: + \cs_set:Npn \@@_input_split_auxiii:w + ##1 \@@_input_split_end: { + 1 } + \int_gset:Nn \g_@@_input_int + { 0 \l_@@_input_tmpa_tl \@@_input_split_end: } + \group_end: + \int_gset_eq:NN \g_@@_input_tmpa_int \g_@@_input_int + \l_@@_input_tmpa_tl \@@_input_split_end: + } + } +\cs_new_nopar:Npn \@@_input_split_end: { } +\cs_new_protected:Npn \@@_input_split_auxiii:w + #1 \@@_input_split_end: + { + \gtl_gset:cn + { g_@@_input_ \int_use:N \g_@@_input_tmpa_int _gtl } {#1} + \int_gdecr:N \g_@@_input_tmpa_int + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_input_gset:n} +% At first, all of the input is in the same~\texttt{gtl}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_input_gset:n + { + \int_gset_eq:NN \g_@@_input_int \c_one + \gtl_gset:cn { g_@@_input_1_gtl } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_input_get:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_input_get:N #1 + { + \@@_input_if_empty:TF + { \gtl_set:Nn #1 { \q_no_value } } + { + \gtl_get_left:cN + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } #1 + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_input_gpop:N} +% Call \cs{@@_input_if_empty:TF} to remove empty levels from the input +% stack, then extract the first token from the left-most non-empty +% level. +% \begin{macrocode} +\cs_new_protected:Npn \@@_input_gpop:N #1 + { + \@@_input_if_empty:TF + { \gtl_set:Nn #1 { \q_no_value } } + { + \gtl_gpop_left:cN + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } #1 + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_input_merge:} +% Merge the top two levels of input. This requires, but does not +% check, that \cs{g_@@_input_int} is at least~$2$. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_input_merge: + { + \int_gdecr:N \g_@@_input_int + \gtl_gconcat:ccc + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + { g_@@_input_ \int_eval:n { \g_@@_input_int + 1 } _gtl } + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + \gtl_gclear:c + { g_@@_input_ \int_eval:n { \g_@@_input_int + 1 } _gtl } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int,TF]{\@@_input_gpop_item:N} +% \begin{macro}[aux]{\@@_input_gpop_item_aux:NN} +% If there is no input, we cannot pop an item. Othewise, try to pop +% from the top of the input stack. If this succeeds, or if this +% failed and the top of stack has extra end-group characters, or if +% the input stack contains only the top-most item, then the answer +% given by \cs{gtl_gpop_left_item:NNTF} is the correct one, which we +% return. Otherwise, merge the top two levels and repeat. +% \begin{macrocode} +\prg_new_protected_conditional:Npnn \@@_input_gpop_item:N #1 { F } + { + \int_compare:nNnTF \g_@@_input_int = \c_zero + { \prg_return_false: } + { + \exp_args:Nc \@@_input_gpop_item_aux:NN + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } #1 + } + } +\cs_new_protected:Npn \@@_input_gpop_item_aux:NN #1#2 + { + \gtl_gpop_left_item:NNTF #1#2 + { \prg_return_true: } + { + \int_compare:nNnTF { \gtl_extra_end:N #1 } > \c_zero + { \prg_return_false: } + { + \int_compare:nNnTF \g_@@_input_int = \c_one + { \prg_return_false: } + { + \@@_input_merge: + \exp_args:Nc \@@_input_gpop_item_aux:NN + { + g_@@_input_ + \int_use:N \g_@@_input_int _gtl + } + #2 + } + } + } + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_input_gpop_tl:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_input_gpop_tl:N #1 + { \tl_clear:N #1 \@@_input_gpop_tl_aux:N #1 } +\cs_new_protected:Npn \@@_input_gpop_tl_aux:N #1 + { + \int_compare:nNnF \g_@@_input_int = \c_zero + { + \exp_args:Nc \@@_input_gpop_tl_aux:NN + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } #1 + } + } +\cs_new_protected:Npn \@@_input_gpop_tl_aux:NN #1#2 + { + \gtl_if_tl:NTF #1 + { + \tl_put_right:Nx #2 { \gtl_left_tl:N #1 } + \gtl_gclear:N #1 + \int_gdecr:N \g_@@_input_int + \@@_input_gpop_tl_aux:N #2 + } + { + \int_compare:nNnTF \g_@@_input_int > \c_one + { \int_compare:nNnTF { \gtl_extra_end:N #1 } > \c_zero } + { \use_i:nn } + { + \tl_put_right:Nx #2 { \gtl_left_tl:N #1 } + \gtl_gpop_left_tl:N #1 + } + { + \@@_input_merge: + \@@_input_gpop_tl_aux:N #2 + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_back_input:n, \@@_back_input:x} +% Insert a token list back into the input. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_back_input:n + { + \int_gincr:N \g_@@_input_int + \gtl_gset:cn { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + } +\cs_generate_variant:Nn \@@_back_input:n { x , V , o } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_back_input_gtl:N} +% Insert a generalized token list back into the input. +% \begin{macrocode} +\cs_new_protected:Npn \@@_back_input_gtl:N #1 + { + \gtl_if_tl:NTF #1 + { \@@_back_input:x { \gtl_left_tl:N #1 } } + { + \gtl_gconcat:cNc + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + #1 + { g_@@_input_ \int_use:N \g_@@_input_int _gtl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_back_input:} +% Insert the last token read back into the input stream. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_back_input: + { \@@_back_input_gtl:N \l_@@_head_gtl } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_back_input_tl_o:} +% Insert the \cs{l_@@_head_tl} (may or may not be the last token read) +% back into the input stream, after expanding it once. Then print +% some diagnostic information. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_back_input_tl_o: + { + \tl_set:Nx \l_@@_tmpa_tl + { \exp_args:NV \exp_not:o \l_@@_head_tl } + \@@_back_input:V \l_@@_tmpa_tl + \@@_print_done:x + { \tl_to_str:N \l_@@_head_tl = \tl_to_str:N \l_@@_tmpa_tl } + } +% \end{macrocode} +% \end{macro} +% +% \subsubsection{Insert token for error recovery} +% +% \begin{macro}[int]{\@@_insert_relax:} +% This function inserts \TeX{}'s |frozen_relax|. It is called when a +% conditional is not done finding its condition, but hits the +% corresponding \tn{fi} or \tn{or} or \tn{else}, or when \tn{input} +% appears while \cs{g_@@_name_in_progress_bool} is \texttt{true}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_insert_relax: + { + \@@_back_input: + \gtl_set_eq:NN \l_@@_head_gtl \c_@@_frozen_relax_gtl + \@@_back_input: + \@@_print_action: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_insert_group_begin_error:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_insert_group_begin_error: + { + \msg_error:nn { unravel } { missing-lbrace } + \@@_back_input: + \gtl_set_eq:NN \l_@@_head_gtl \c_group_begin_gtl + \@@_back_input: + \@@_print_action: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_insert_dollar_error:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_insert_dollar_error: + { + \@@_back_input: + \@@_back_input:n { $ } % $ + \msg_error:nn { unravel } { missing-dollar } + \@@_print_action: + } +% \end{macrocode} +% \end{macro} +% +% \subsubsection{Macro calls} +% +% \begin{macro}[aux,EXP] +% { +% \@@_macro_prefix:N, +% \@@_macro_parameter:N, +% \@@_macro_replacement:N +% } +% \begin{macrocode} +\group_begin: + \char_set_lccode:nn { `. } { `: } + \tex_lowercase:D + { + \cs_new:Npn \@@_macro_split_do:NN #1 + { + \exp_after:wN \@@_macro_split_do:wN + \token_to_meaning:N #1 \q_mark { } . -> \q_mark \use_none:nnnn + \q_stop + } + \cs_new:Npn \@@_macro_split_do:wN + #1 . #2 -> #3 \q_mark #4 #5 \q_stop #6 + { #4 #6 {#1} {#2} {#3} } + } +\group_end: +\cs_new:Npn \@@_macro_prefix:N #1 + { \@@_macro_split_do:NN #1 \use_i:nnn } +\cs_new:Npn \@@_macro_parameter:N #1 + { \@@_macro_split_do:NN #1 \use_ii:nnn } +\cs_new:Npn \@@_macro_replacement:N #1 + { \@@_macro_split_do:NN #1 \use_iii:nnn } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: redoc +% ^^A todo: estimate how far the macro has touched the input. +% \begin{macro}[int]{\@@_macro_call:} +% \begin{macro}[aux] +% { +% \@@_macro_call_safe:, +% \@@_macro_call_quick:, +% \@@_macro_call_quick_loop:NN +% } +% Macros are simply expanded once. We cannot determine precisely +% which tokens a macro will need for its parameters, but we know that +% it must form a balanced token list. Thus we can be safe by +% extracting the longest balanced prefix in the input and working with +% that. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_macro_call: + { + \bool_if:NTF \g_@@_speedup_macros_bool + { + \tl_set:Nx \l_@@_tmpa_tl + {^ \exp_after:wN \@@_macro_parameter:N \l_@@_head_tl } + \tl_if_in:NVTF \c_@@_parameters_tl \l_@@_tmpa_tl + { \@@_macro_call_quick: } { \@@_macro_call_safe: } + } + { \@@_macro_call_safe: } + \exp_args:NV \@@_back_input:o \l_@@_head_tl + \@@_print_done:x { \g_@@_action_text_str } + } +\cs_new_protected_nopar:Npn \@@_macro_call_safe: + { + \@@_input_gpop_tl:N \l_@@_tmpa_tl + \tl_put_right:NV \l_@@_head_tl \l_@@_tmpa_tl + } +\cs_new_protected_nopar:Npn \@@_macro_call_quick: + { + \exp_after:wN \@@_macro_call_quick_loop:NN \l_@@_tmpa_tl + { ? \use_none_delimit_by_q_stop:w } \q_stop + } +\cs_new_protected_nopar:Npn \@@_macro_call_quick_loop:NN #1#2 + { + \use_none:n #2 + \@@_input_gpop_item:NF \l_@@_tmpa_tl + { \msg_error:nn { unravel } { runaway-macro-parameter } } + \tl_put_right:Nx \l_@@_head_tl + { { \exp_not:V \l_@@_tmpa_tl } } + \@@_macro_call_quick_loop:NN + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \subsection{Expand next token} +% +% \begin{macro}[int]{\@@_expand:} +% This is similar to \cs{@@_do_step:}, but operates on expandable +% tokens rather than (non-expandable) commands. We mimick \TeX{}'s +% structure, distinguishing macros from other commands (not quite sure +% why). +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_expand: + { + \@@_set_action_text: + \bool_if:NT \l_@@_debug_bool + { + \@@_set_cmd: + \iow_term:x { Exp:~\int_use:N \l_@@_head_cmd_int } + } + \token_if_macro:NTF \l_@@_head_token + { \@@_macro_call: } + { \@@_expand_nonmacro: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_expand_nonmacro:} +% The token is a primitive. We find its (cleaned-up) \tn{meaning}, +% and call the function implementing that expansion. If we do not +% recognize the meaning then it is probably an unknown primitive. If +% we recognize the meaning but there is no corresponding function, +% then we probably have not implemented it yet. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_expand_nonmacro: + { + \@@_set_cmd_aux_meaning: + \@@_set_cmd_aux_primitive:oTF { \l_@@_head_meaning_tl } + { + \cs_if_exist_use:cF + { @@_expandable_ \int_use:N \l_@@_head_cmd_int : } + { \msg_error:nnx { unravel } { internal } { expandable } } + } + { + \msg_error:nnx { unravel } { unknown-primitive } + { \l_@@_head_meaning_tl } + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \@@_print_action: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_get_x_next:} +% Get a token. If it is expandable, then expand it, and repeat. This +% function does not set the |cmd| and |char| integers. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_x_next: + { + \@@_get_next: + \@@_token_if_expandable:NT \l_@@_head_token + { + \@@_expand: + \@@_get_x_next: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_get_x_or_protected:} +% Get a token. If it is expandable, but not protected, then expand +% it, and repeat. This function does not set the |cmd| and |char| +% integers. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_x_or_protected: + { + \@@_get_next: + \@@_token_if_protected:NF \l_@@_head_token + { + \@@_expand: + \@@_get_x_or_protected: + } + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Basic scanning subroutines} +% +% ^^A todo: implement |test_no_ligatures|? +% ^^A todo: implement |get_tag_code|? +% +% \begin{macro}[aux]{\@@_get_x_non_blank:} +% This function does not set the |cmd| and |char| integers. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_x_non_blank: + { + \@@_get_x_next: + \token_if_eq_catcode:NNT \l_@@_head_token \c_space_token + { \@@_get_x_non_blank: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_get_x_non_relax:} +% This function does not set the |cmd| and |char| integers. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_get_x_non_relax: + { + \@@_get_x_next: + \token_if_eq_meaning:NNT \l_@@_head_token \scan_stop: + { \@@_get_x_non_relax: } + { + \token_if_eq_catcode:NNT \l_@@_head_token \c_space_token + { \@@_get_x_non_relax: } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_skip_optional_space:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_skip_optional_space: + { + \@@_get_x_next: + \token_if_eq_catcode:NNF \l_@@_head_token \c_space_token + { \@@_back_input: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_optional_equals:} +% See \TeX{}'s |scan_optional_equals|. In all cases we forcefully +% insert an equal sign in the output, because this sign is required, +% as \cs{@@_scan_something_internal:n} leaves raw numbers in +% \cs{g_@@_prev_input_seq}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_optional_equals: + { + \@@_get_x_non_blank: + \tl_if_eq:NNTF \l_@@_head_tl \c_@@_eq_tl + { \@@_prev_input:n { = } } + { + \@@_prev_input_silent:n { = } + \@@_back_input: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_left_brace:} +% The presence of \tn{relax} is allowed before a begin-group +% character. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_left_brace: + { + \@@_get_x_non_relax: + \token_if_eq_catcode:NNF \l_@@_head_token \c_group_begin_token + { \@@_insert_group_begin_error: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_keyword:n} +% \begin{macro}[int,TF]{\@@_scan_keyword:n} +% \begin{macro}[aux] +% { +% \@@_scan_keyword_loop:NNN, +% \@@_scan_keyword_test:NNTF, +% \@@_scan_keyword_true:, +% \@@_scan_keyword_false:w +% } +% +% The details of how \TeX{} looks for keywords are quite tricky to get +% right, in particular with respect to expansion, case-insensitivity, +% and spaces. We get rid of the case issue by requiring the keyword +% to be given in both cases, intertwined: for instance, +% \cs{@@_scan_keyword:n} |{| |pPtT| |}|. Then loop through pairs of +% letters (which should be matching lowercase and uppercase letters). +% The looping auxiliary takes three arguments, the first of which is a +% boolean, \texttt{true} if spaces are allowed (no letter of the +% keyword has been found yet). At each iteration, get a token, with +% expansion, and test whether it is a non-active character equal (in +% character code) to either letter of the pair: this happens if the +% token is not ``definable'' (neither a control sequence nor an active +% character) and it has the right string representation\ldots{} well, +% it could also be doubled (macro parameter character), hence we look +% at the first character only; spaces become an empty string, but this +% works out because no keyword contains a space. So, at each +% iteration, if the token is the correct non-active character, add it +% to \cs{g_@@_prev_input_seq} (as a generalized token list since +% keywords may match begin-group or end-group characters), and +% otherwise break with \cs{@@_scan_keyword_false:w}, unless we are +% still at the beginning of the keyword and the token is a space. +% When the loop reaches the end of the keyword letter pairs, complain +% if there were an odd number of letters, and otherwise conclude the +% loop with \cs{@@_scan_keyword_true:}, which stores the keyword, +% converted to a string. Note that \TeX{}'s skipping of leading +% spaces here must be intertwined with the search for keyword, as is +% shown by the (plain \TeX{}) example +% \begin{verbatim} +% \lccode32=`f \lowercase{\def\fspace{ }} +% \skip0=1pt plus 1 \fspace il\relax +% \message{\the\skip0} % => 1pt plus 1fil +% \end{verbatim} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_keyword:n #1 + { \@@_scan_keyword:nTF {#1} { } { } } +\prg_new_protected_conditional:Npnn \@@_scan_keyword:n #1 + { T , F , TF } + { + \seq_gput_right:NV \g_@@_prev_input_seq \c_empty_gtl + \@@_scan_keyword_loop:NNN \c_true_bool + #1 \q_recursion_tail \q_recursion_tail \q_recursion_stop + } +\cs_new_protected:Npn \@@_scan_keyword_loop:NNN #1#2#3 + { + \quark_if_recursion_tail_stop_do:nn {#2} + { \@@_scan_keyword_true: } + \quark_if_recursion_tail_stop_do:nn {#3} + { \msg_error:nnx { unravel } { internal } { odd-keyword-length } } + \@@_get_x_next: + \@@_scan_keyword_test:NNTF #2#3 + { + \@@_prev_input_gtl:N \l_@@_head_gtl + \@@_scan_keyword_loop:NNN \c_false_bool + } + { + \token_if_eq_catcode:NNF \l_@@_head_token \c_space_token + { \@@_scan_keyword_false:w } + \bool_if:NF #1 + { \@@_scan_keyword_false:w } + \@@_scan_keyword_loop:NNN #1#2#3 + } + } +\prg_new_protected_conditional:Npnn \@@_scan_keyword_test:NN #1#2 + { TF } + { + \@@_gtl_if_head_is_definable:NTF \l_@@_head_gtl + { \prg_return_false: } + { + \str_if_eq_x:nnTF + { \str_head:f { \gtl_to_str:N \l_@@_head_gtl } } {#1} + { \prg_return_true: } + { + \str_if_eq_x:nnTF + { \str_head:f { \gtl_to_str:N \l_@@_head_gtl } } {#2} + { \prg_return_true: } + { \prg_return_false: } + } + } + } +\cs_new_protected_nopar:Npn \@@_scan_keyword_true: + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpb_gtl + \@@_prev_input:x { \gtl_to_str:N \l_@@_tmpb_gtl } + \prg_return_true: + } +\cs_new_protected_nopar:Npn \@@_scan_keyword_false:w + #1 \q_recursion_stop + { + \@@_back_input: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpb_gtl + \@@_back_input_gtl:N \l_@@_tmpb_gtl + \prg_return_false: + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_font_ident:} +% Find a font identifier. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_font_ident: + { + \@@_get_x_non_blank: + \@@_set_cmd: + \int_case:nnF \l_@@_head_cmd_int + { + { \@@_tex_use:n { def_font } } + { \@@_prev_input:V \l_@@_head_tl } + { \@@_tex_use:n { letterspace_font } } + { \@@_prev_input:V \l_@@_head_tl } + { \@@_tex_use:n { pdf_copy_font } } + { \@@_prev_input:V \l_@@_head_tl } + { \@@_tex_use:n { set_font } } + { \@@_prev_input:V \l_@@_head_tl } + { \@@_tex_use:n { def_family } } + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_int: + } + } + { + \msg_error:nn { unravel } { missing-font-id } + \@@_prev_input:n { \tex_nullfont:D } + \@@_back_error: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_font_int:} +% Find operands for one of \tn{hyphenchar}'s friends (command code +% |assign_font_int=78|). +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_font_int: + { + \int_case:nnF \l_@@_head_char_int + { + { 0 } { \@@_scan_font_ident: } + { 1 } { \@@_scan_font_ident: } + { 6 } { \@@_scan_font_ident: } + } + { \@@_scan_font_ident: \@@_scan_int: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_font_dimen:} +% Find operands for \tn{fontdimen}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_font_dimen: + { + \@@_scan_int: + \@@_scan_font_ident: + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: redoc +% ^^A todo: rename: all other scan functions do get_x_next themselves. +% \begin{macro}[aux]{\@@_scan_something_internal:n} +% \begin{macro}[aux]{\@@_scan_something_aux:nwn} +% Receives an (explicit) \enquote{level} argument: +% \begin{itemize} +% \item |int_val=0| for integer values; +% \item |dimen_val=1| for dimension values; +% \item |glue_val=2| for glue specifications; +% \item |mu_val=3| for math glue specifications; +% \item |ident_val=4| for font identifiers (this never happens); +% \item |tok_val=5| for token lists. +% \end{itemize} +% Scans something internal, and places its value, converted to the +% given level, to the right of the last item of +% \cs{g_@@_prev_input_seq}, then sets \cs{g_@@_val_level_int} to the +% found level (level before conversion, so this may be higher than +% requested). Get in one go the information about what level is +% produced by the given token once it has received all its operands +% (head of \cs{l_@@_tmpa_tl}), and about what to do to find those +% operands (tail of \cs{l_@@_tmpa_tl}). If the first token is not +% between |min_internal=68| and |max_internal=89|, this step claims a +% level of~$8$. If the level that will be produced is $4$ or~$5$, but +% the argument~|#1| is not, or if the level is~$8$ (exercise: check +% that the conditional indeed checks for this case, given that \eTeX{} +% rounds ``to nearest, ties away from zero''), then complain. +% Otherwise, fetch arguments if there are any: the scanning is +% performed after placing the current token in a new level of +% |prev_input| and telling the user about it. Once done with this +% step, \cs{l_@@_head_tl} contains the tokens found. Convert them to +% the wanted level with \cs{@@_thing_use:nN} (at this stage, \TeX{} +% may complain about a missing number or incompatible glue units), and +% place the result in |prev_input|. Finally, tell the user the tokens +% that have been found and their value (and, if there was a single +% token, its meaning). +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_something_internal:n #1 + { + \@@_set_cmd: + \@@_set_action_text: + \tl_set:Nf \l_@@_tmpa_tl { \@@_thing_case: } + \exp_after:wN \@@_scan_something_aux:nwn + \l_@@_tmpa_tl \q_stop {#1} + } +\cs_new_protected:Npn \@@_scan_something_aux:nwn #1#2 \q_stop #3 + { + \int_compare:nNnTF + { ( #1 + \c_two ) / \c_four } > { ( #3 + \c_two ) / \c_four } + { \@@_back_input: } + { + \tl_if_empty:nF {#2} + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + #2 + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + } + } + \tl_set:Nx \l_@@_tmpa_tl + { \@@_thing_use:nnN {#1} {#3} \l_@@_head_tl } + \@@_prev_input_silent:V \l_@@_tmpa_tl + \@@_set_action_text: + \@@_set_action_text:x + { \g_@@_action_text_str = ~ \tl_to_str:N \l_@@_tmpa_tl } + \int_compare:nNnF {#3} > { 3 } { \@@_print_action: } + \int_gset:Nn \g_@@_val_level_int {#1} + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux, EXP] +% {\@@_thing_case:, \@@_thing_last_item:, \@@_thing_register:} +% This expands to a digit (the level generated by whatever token is +% the current |head|), followed by some code to fetch necessary +% operands. In most cases, this can be done by simply looking at the +% |cmd| integer, but for |last_item| and |register|, the level of the +% token depends on the |char| integer. When the token is not allowed +% after \tn{the} (or at any other position where +% \cs{@@_scan_something_internal:n} is called), the resulting level +% is~$8$, large enough so that the main function knows it is +% forbidden. +% \begin{macrocode} +\cs_new_nopar:Npn \@@_thing_case: + { + \int_case:nnF \l_@@_head_cmd_int + { + { 68 } { 0 } % char_given + { 69 } { 0 } % math_given + { 70 } { \@@_thing_last_item: } % last_item + { 71 } { 5 \@@_scan_toks_register: } % toks_register + { 72 } { 5 } % assign_toks + { 73 } { 0 } % assign_int + { 74 } { 1 } % assign_dimen + { 75 } { 2 } % assign_glue + { 76 } { 3 } % assign_mu_glue + { 77 } { 1 \@@_scan_font_dimen: } % assign_font_dimen + { 78 } { 0 \@@_scan_font_int: } % assign_font_int + { 79 } { 0 } % set_aux + { 80 } { 0 } % set_prev_graf + { 81 } { 1 } % set_page_dimen + { 82 } { 0 } % set_page_int + { 83 } { 1 \@@_scan_int: } % set_box_dimen + { 84 } { 0 \@@_scan_int: } % set_shape + { 85 } { 0 \@@_scan_int: } % def_code + { 86 } { 4 \@@_scan_font_ident: } % def_family + { 87 } { 4 \@@_scan_font_ident: } % set_font + { 88 } { 4 \@@_scan_font_ident: } % def_font + { 89 } { \@@_thing_register: } % register + } + { 8 } + } +\cs_new_nopar:Npn \@@_thing_last_item: + { + \int_compare:nNnTF \l_@@_head_char_int < { 26 } + { + \int_case:nnF \l_@@_head_char_int + { + { 1 } { 1 } % lastkern + { 2 } { 2 } % lastskip + } + { 0 } % other integer parameters + } + { + \int_case:nnF \l_@@_head_char_int + { + { 26 } { 0 \@@_scan_normal_glue: } % gluestretchorder + { 27 } { 0 \@@_scan_normal_glue: } % glueshrinkorder + { 28 } % fontcharwd + { 1 \@@_scan_font_ident: \@@_scan_int: } + { 29 } % fontcharht + { 1 \@@_scan_font_ident: \@@_scan_int: } + { 30 } % fontchardp + { 1 \@@_scan_font_ident: \@@_scan_int: } + { 31 } % fontcharic + { 1 \@@_scan_font_ident: \@@_scan_int: } + { 32 } { 1 \@@_scan_int: } % parshapelength + { 33 } { 1 \@@_scan_int: } % parshapeindent + { 34 } { 1 \@@_scan_int: } % parshapedimen + { 35 } { 1 \@@_scan_normal_glue: } % gluestretch + { 36 } { 1 \@@_scan_normal_glue: } % glueshrink + { 37 } { 2 \@@_scan_mu_glue: } % mutoglue + { 38 } { 3 \@@_scan_normal_glue: } % gluetomu + { 39 } % numepr + { 0 \@@_scan_expr:N \@@_scan_int: } + { 40 } % dimexpr + { 1 \@@_scan_expr:N \@@_scan_normal_dimen: } + { 41 } % glueexpr + { 2 \@@_scan_expr:N \@@_scan_normal_glue: } + { 42 } % muexpr + { 3 \@@_scan_expr:N \@@_scan_mu_glue: } + } + { } + } + } +\cs_new_nopar:Npn \@@_thing_register: + { + \int_eval:n { \l_@@_head_char_int / 1 000 000 - 1 } + \int_compare:nNnT { \tl_tail:V \l_@@_head_char_int } = \c_zero + { \@@_scan_int: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_toks_register:} +% A case where getting operands is not completely trivial. +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_toks_register: + { + \int_compare:nNnT \l_@@_head_char_int = \c_zero + { \@@_scan_int: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux,EXP]{\@@_thing_use:nnN} +% Given a level~|#1|, call a function to convert the token list~|#2| +% to the correct level. This step may trigger \TeX{} errors, which +% should precisely match the expected ones. +% \begin{macrocode} +\cs_new:Npn \@@_thing_use:nnN #1#2 + { + \int_case:nnF { \int_min:nn {#1} {#2} } + { + { 0 } \int_eval:n + { 1 } \dim_eval:n + { 2 } \skip_eval:n + { 3 } \muskip_eval:n + } + { \tex_the:D } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: comment +% \begin{macro}[aux]{\@@_scan_expr:N} +% \begin{macro}[aux]{\@@_scan_expr_aux:NN, \@@_scan_factor:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_expr:N #1 + { \@@_scan_expr_aux:NN #1 \c_false_bool } +\cs_new_protected:Npn \@@_scan_expr_aux:NN #1#2 + { + \@@_get_x_non_blank: + \@@_scan_factor:N #1 + \@@_scan_expr_op:NN #1#2 + } +\cs_new_protected:Npn \@@_scan_expr_op:NN #1#2 + { + \@@_get_x_non_blank: + \tl_case:NnF \l_@@_head_tl + { + \c_@@_plus_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_expr_aux:NN #1#2 + } + \c_@@_minus_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_expr_aux:NN #1#2 + } + \c_@@_times_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_non_blank: + \@@_scan_factor:N \@@_scan_int: + \@@_scan_expr_op:NN #1#2 + } + \c_@@_over_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_non_blank: + \@@_scan_factor:N \@@_scan_int: + \@@_scan_expr_op:NN #1#2 + } + \c_@@_rp_tl + { + \bool_if:NTF #2 + { \@@_prev_input:V \l_@@_head_tl } + { \@@_back_input: } + } + } + { + \bool_if:NTF #2 + { + \msg_error:nn { unravel } { missing-rparen } + \@@_back_input: + \@@_prev_input:V \c_@@_rp_tl + } + { + \token_if_eq_meaning:NNF \l_@@_head_token \scan_stop: + { \@@_back_input: } + } + } + } +\cs_new_protected:Npn \@@_scan_factor:N #1 + { + \tl_if_eq:NNTF \l_@@_head_tl \c_@@_lp_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_expr_aux:NN #1 \c_true_bool + } + { + \@@_back_input: + #1 + } + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_signs:} +% Skips blanks, scans signs, and places them to the right of the last +% item of \cs{@@_prev_input:n}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_signs: + { + \@@_get_x_non_blank: + \tl_if_eq:NNTF \l_@@_head_tl \c_@@_plus_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_signs: + } + { + \tl_if_eq:NNT \l_@@_head_tl \c_@@_minus_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_signs: + } + } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: |\let\a b \ifnum`\a=`b wrong!\fi| +% \begin{macro}[aux]{\@@_scan_int:} +% \begin{macro}[aux] +% {\@@_scan_int_char:, \@@_scan_int_lq:, \@@_scan_int_explicit:n} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_int: + { + \@@_scan_signs: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int < { \@@_tex_use:n { min_internal } } + { \@@_scan_int_char: } + { + \int_compare:nNnTF + \l_@@_head_cmd_int + > { \@@_tex_use:n { max_internal } } + { \@@_scan_int_char: } + { \@@_scan_something_internal:n { 0 } } + } + } +\cs_new_protected_nopar:Npn \@@_scan_int_char: + { + \tl_case:NnF \l_@@_head_tl + { + \c_@@_lq_tl { \@@_scan_int_lq: } + \c_@@_rq_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_next: + \@@_scan_int_explicit:n { ' } + } + \c_@@_dq_tl + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_next: + \@@_scan_int_explicit:n { " } + } + } + { \@@_scan_int_explicit:n { } } + } +\cs_new_protected_nopar:Npn \@@_scan_int_lq: + { + \@@_get_next: + \@@_gtl_if_head_is_definable:NF \l_@@_head_gtl + { + \tl_set:Nx \l_@@_head_tl + { \@@_token_to_char:N \l_@@_head_token } + } + \tl_set:Nx \l_@@_tmpa_tl + { \int_eval:n { \exp_after:wN ` \l_@@_head_tl } } + \@@_prev_input_silent:V \l_@@_tmpa_tl + \@@_print_action:x + { ` \gtl_to_str:N \l_@@_head_gtl = \l_@@_tmpa_tl } + \@@_skip_optional_space: + } +\cs_new_protected:Npn \@@_scan_int_explicit:n #1 + { + \if_int_compare:w \c_one + < #1 1 \exp_after:wN \exp_not:N \l_@@_head_tl \exp_stop_f: + \exp_after:wN \use_i:nn + \else: + \exp_after:wN \use_ii:nn + \fi: + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_next: + \@@_scan_int_explicit:n {#1} + } + { + \token_if_eq_catcode:NNF \l_@@_head_token \c_space_token + { \@@_back_input: } + } + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_normal_dimen:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_normal_dimen: + { \@@_scan_dimen:NN \c_false_bool \c_false_bool } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_dimen:NN} +% Quoth |tex.web|. ``\emph{|mu| is |true| if the finite units must be +% `mu', while |mu| is |false| if `mu' units are disallowed; |inf| is +% |true| if the infinite units `fil', `fill', `filll' are +% permitted.}'' The function here has the same first two parameters +% as \TeX{}'s |scan_dimen|, but omits the third, as the shortcut is +% provided as a separate function, \cs{@@_scan_dimen_unit:NN}. +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_dimen:NN #1#2 + { + \@@_scan_signs: + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int < { \@@_tex_use:n { min_internal } } + { \@@_scan_dimen_char:NN #1#2 } + { + \int_compare:nNnTF + \l_@@_head_cmd_int + > { \@@_tex_use:n { max_internal } } + { \@@_scan_dimen_char:NN #1#2 } + { + \bool_if:NTF #1 + { + \@@_scan_something_internal:n { 3 } + \int_case:nnF \g_@@_val_level_int + { + { 0 } { \@@_scan_dim_unit:NN #1 #2 } + { 3 } { } + } + { + \msg_error:nn { unravel } { incompatible-units } + % ^^A todo: error recovery + } + } + { + \@@_scan_something_internal:n { 2 } + \int_case:nnF \g_@@_val_level_int + { + { 0 } { \@@_scan_dim_unit:NN #1#2 } + { 3 } % ^^A todo: error recovery + { \msg_error:nn { unravel } { incompatible-units } } + } + { } + } + } + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_prev_input_silent:V \l_@@_head_tl + } +\cs_new_protected:Npn \@@_scan_dimen_char:NN #1#2 + { + \tl_if_eq:NNT \l_@@_head_tl \c_@@_comma_tl + { \tl_set_eq:NN \l_@@_head_tl \c_@@_point_tl } + \tl_if_eq:NNTF \l_@@_head_tl \c_@@_point_tl + { + \@@_prev_input:n { . } + \@@_scan_decimal_loop: + } + { + \tl_if_in:nVTF { 0123456789 } \l_@@_head_tl + { + \@@_back_input: + \@@_scan_int: + \tl_if_eq:NNT \l_@@_head_tl \c_@@_comma_tl + { \tl_set_eq:NN \l_@@_head_tl \c_@@_point_tl } + \tl_if_eq:NNT \l_@@_head_tl \c_@@_point_tl + { + \@@_input_gpop:N \l_@@_tmpb_gtl + \@@_prev_input:n { . } + \@@_scan_decimal_loop: + } + } + { + \@@_back_input: + \@@_scan_int: + } + } + \@@_scan_dim_unit:NN #1#2 + } +\cs_new_protected:Npn \@@_scan_dim_unit:NN #1#2 + { + \bool_if:NT #2 + { + \@@_scan_keyword:nT { fF iI lL } + { + \@@_scan_inf_unit_loop: + \@@_break:w + } + } + \@@_get_x_non_blank: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int < { \@@_tex_use:n { min_internal } } + { \@@_back_input: } + { + \int_compare:nNnTF + \l_@@_head_cmd_int + > { \@@_tex_use:n { max_internal } } + { \@@_back_input: } + { + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \bool_if:NTF #1 + { \@@_scan_something_internal:n { 3 } } + { \@@_scan_something_internal:n { 2 } } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_set:Nx \l_@@_tmpa_tl + { + \bool_if:NTF #1 \muskip_eval:n \skip_eval:n + { + \l_@@_tmpa_tl + \bool_if:NTF #1 \etex_muexpr:D \etex_glueexpr:D + \l_@@_head_tl + } + } + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_break:w + } + } + \bool_if:NT #1 + { + \@@_scan_keyword:nT { mM uU } { \@@_break:w } + \msg_error:nn { unravel } { missing-mudim } + \@@_break:w + } + \@@_scan_keyword:nT { eE mM } { \@@_break:w } + \@@_scan_keyword:nT { eE xX } { \@@_break:w } + \@@_scan_keyword:nT { pP xX } { \@@_break:w } + \@@_scan_keyword:n { tT rR uU eE } + \@@_scan_keyword:nT { pP tT } { \@@_break:w } + \@@_scan_keyword:nT { iI nN } { \@@_break:w } + \@@_scan_keyword:nT { pP cC } { \@@_break:w } + \@@_scan_keyword:nT { cC mM } { \@@_break:w } + \@@_scan_keyword:nT { mM mM } { \@@_break:w } + \@@_scan_keyword:nT { bB pP } { \@@_break:w } + \@@_scan_keyword:nT { dD dD } { \@@_break:w } + \@@_scan_keyword:nT { cC cC } { \@@_break:w } + \@@_scan_keyword:nT { nN dD } { \@@_break:w } + \@@_scan_keyword:nT { nN cC } { \@@_break:w } + \@@_scan_keyword:nT { sS pP } { \@@_break:w } + \@@_break_point: + } +\cs_new_protected_nopar:Npn \@@_scan_inf_unit_loop: + { \@@_scan_keyword:nT { lL } { \@@_scan_inf_unit_loop: } } +\cs_new_protected_nopar:Npn \@@_scan_decimal_loop: + { + \@@_get_x_next: + \tl_if_empty:NTF \l_@@_head_tl + { \use_ii:nn } + { \tl_if_in:nVTF { 0123456789 } \l_@@_head_tl } + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_decimal_loop: + } + { + \token_if_eq_catcode:NNF \l_@@_head_token \c_space_token + { \@@_back_input: } + \@@_prev_input_silent:n { ~ } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_normal_glue:, \@@_scan_mu_glue:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_normal_glue: + { \@@_scan_glue:n { 2 } } +\cs_new_protected_nopar:Npn \@@_scan_mu_glue: + { \@@_scan_glue:n { 3 } } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: this is wrong for signs. +% \begin{macro}[int]{\@@_scan_glue:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_glue:n #1 + { + \int_compare:nNnTF {#1} = { 2 } + { \@@_scan_glue_aux:nN {#1} \c_false_bool } + { \@@_scan_glue_aux:nN {#1} \c_true_bool } + } +\cs_new_protected:Npn \@@_scan_glue_aux:nN #1#2 + { + \@@_scan_signs: + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int < { \@@_tex_use:n { min_internal } } + { \@@_back_input: \@@_scan_dimen:NN #2 \c_false_bool } + { + \int_compare:nNnTF + \l_@@_head_cmd_int + > { \@@_tex_use:n { max_internal } } + { + \@@_back_input: + \@@_scan_dimen:NN #2 \c_false_bool + } + { + \@@_scan_something_internal:n {#1} + \int_case:nnF \g_@@_val_level_int + { + { 0 } { \@@_scan_dimen:NN #2 \c_false_bool } + { 1 } { \bool_if:NT #2 { \msg_error: } } % ^^A todo: ?? + } + { + \int_compare:nNnF \g_@@_val_level_int = {#1} + { \msg_error:nn { unravel } { incompatible-units } } + \@@_break:w + } + } + } + \@@_scan_keyword:nT { pP lL uU sS } + { \@@_scan_dimen:NN #2 \c_true_bool } + \@@_scan_keyword:nT { mM iI nN uU sS } + { \@@_scan_dimen:NN #2 \c_true_bool } + \@@_break_point: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_prev_input_silent:V \l_@@_head_tl + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: allow \input".. .." +% \begin{macro}[int]{\@@_scan_file_name:} +% ^^A todo: area_delimiter and ext_delimiter ?? +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_file_name: + { + \bool_gset_true:N \g_@@_name_in_progress_bool + \@@_get_x_non_blank: + \@@_scan_file_name_loop: + \bool_gset_false:N \g_@@_name_in_progress_bool + \@@_prev_input_silent:n { ~ } + } +\cs_new_protected_nopar:Npn \@@_scan_file_name_loop: + { + \@@_gtl_if_head_is_definable:NTF \l_@@_head_gtl + { \@@_back_input: } + { + \tl_set:Nx \l_@@_tmpa_tl + { \@@_token_to_char:N \l_@@_head_token } + \tl_if_eq:NNF \l_@@_tmpa_tl \c_space_tl + { + \@@_prev_input_silent:V \l_@@_tmpa_tl + \@@_get_x_next: + \@@_scan_file_name_loop: + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_r_token:} +% This is analogous to \TeX{}'s |get_r_token|. We store in +% \cs{l_@@_defined_tl} the token which we found, as this is what will +% be defined by the next assignment. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_r_token: + { + \bool_do_while:nn + { \tl_if_eq_p:NN \l_@@_head_tl \c_space_tl } + { \@@_get_next: } + \@@_gtl_if_head_is_definable:NF \l_@@_head_gtl + { + \msg_error:nn { unravel } { missing-cs } + \@@_back_input: + \tl_set:Nn \l_@@_head_tl { \@@_inaccessible:w } + } + \@@_prev_input_silent:V \l_@@_head_tl + \tl_set_eq:NN \l_@@_defined_tl \l_@@_head_tl + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: hash doubling is wrong +% \begin{macro}[aux]{\@@_scan_toks_to_str:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_toks_to_str: + { + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_scan_toks:NN \c_false_bool \c_true_bool + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_prev_input_silent:x + { { \exp_after:wN \tl_to_str:n \l_@@_tmpa_tl } } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: provide separate functions for defs (avoid hash doubling). +% \begin{macro}[aux]{\@@_scan_toks:NN} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_toks:NN #1#2 + { + \bool_if:NT #1 { \@@_scan_param: } + \@@_scan_left_brace: + \bool_if:NTF #2 + { \@@_scan_group_x:N #1 } + { \@@_scan_group_n:N #1 } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_param:} +% \begin{macro}[aux]{\@@_scan_param_aux:} +% Collect the parameter text into \cs{l_@@_tmpa_tl}, and when seeing +% either a begin-group or an end-group character, put it back into the +% input, stop looping, and put what we collected into +% \cs{l_@@_defining_tl} and into the |prev_input|. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_param: + { + \tl_clear:N \l_@@_tmpa_tl + \@@_scan_param_aux: + \tl_put_right:NV \l_@@_defining_tl \l_@@_tmpa_tl + \@@_prev_input_silent:V \l_@@_tmpa_tl + } +\cs_new_protected_nopar:Npn \@@_scan_param_aux: + { + \@@_get_next: + \tl_concat:NNN \l_@@_tmpa_tl + \l_@@_tmpa_tl \l_@@_head_tl + \tl_if_empty:NTF \l_@@_head_tl + { \@@_back_input: } { \@@_scan_param_aux: } + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_group_n:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_group_n:N #1 + { + \@@_back_input: + \@@_input_gpop_item:NF \l_@@_head_tl + { + \msg_error:nn { unravel } { runaway-text } + \@@_exit:w + } + \tl_set:Nx \l_@@_head_tl { { \exp_not:V \l_@@_head_tl } } + \bool_if:NT #1 + { \tl_put_right:NV \l_@@_defining_tl \l_@@_head_tl } + \@@_prev_input_silent:V \l_@@_head_tl + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_group_x:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_group_x:N #1 + { + \@@_input_gpop_tl:N \l_@@_head_tl + \@@_back_input:V \l_@@_head_tl + \bool_if:NTF #1 + { + \@@_prev_input_silent:V \c_left_brace_str + \tl_put_right:Nn \l_@@_defining_tl { { \if_false: } \fi: } + \@@_scan_group_xdef:n { 1 } + } + { + \seq_gput_right:NV \g_@@_prev_input_seq \c_empty_gtl + \@@_prev_input_gtl:N \l_@@_head_gtl + \@@_scan_group_x:n { 1 } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpb_gtl + \@@_prev_input_silent:x + { \gtl_left_tl:N \l_@@_tmpb_gtl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_group_xdef:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_group_xdef:n #1 + { + \@@_get_token_x:N \c_true_bool + \tl_if_empty:NTF \l_@@_head_tl + { + \gtl_if_head_is_group_begin:NTF \l_@@_head_gtl + { + \@@_prev_input_silent:V \c_left_brace_str + \tl_put_right:Nn \l_@@_defining_tl { { \if_false: } \fi: } + \@@_scan_group_xdef:f { \int_eval:n { #1 + 1 } } + } + { + \@@_prev_input_silent:V \c_right_brace_str + \tl_put_right:Nn \l_@@_defining_tl { \if_false: { \fi: } } + \int_compare:nNnF {#1} = \c_one + { \@@_scan_group_xdef:f { \int_eval:n { #1 - 1 } } } + } + } + { + \@@_prev_input_silent:V \l_@@_head_tl + \tl_put_right:Nx \l_@@_defining_tl + { \exp_not:N \exp_not:N \exp_not:V \l_@@_head_tl } + \@@_scan_group_xdef:n {#1} + } + } +\cs_generate_variant:Nn \@@_scan_group_xdef:n { f } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_group_x:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_scan_group_x:n #1 + { + \@@_get_token_x:N \c_false_bool + \@@_prev_input_gtl:N \l_@@_head_gtl + \tl_if_empty:NTF \l_@@_head_tl + { + \gtl_if_head_is_group_begin:NTF \l_@@_head_gtl + { \@@_scan_group_x:f { \int_eval:n { #1 + 1 } } } + { + \int_compare:nNnF {#1} = \c_one + { \@@_scan_group_x:f { \int_eval:n { #1 - 1 } } } + } + } + { \@@_scan_group_x:n {#1} } + } +\cs_generate_variant:Nn \@@_scan_group_x:n { f } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_get_token_x:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_get_token_x:N #1 + { + \@@_get_next: + \@@_token_if_protected:NF \l_@@_head_token + { + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { the } } + { + \@@_get_the: + \bool_if:NTF #1 + { + \tl_put_right:NV \l_@@_defining_tl \l_@@_head_tl + \@@_prev_input:V \l_@@_head_tl + } + { + \gtl_set:Nx \l_@@_tmpb_gtl { \l_@@_head_tl } + \@@_prev_input_gtl:N \l_@@_tmpb_gtl + \@@_print_action: + } + } + { \@@_expand: } + \@@_get_token_x:N #1 + } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: catch runaway expand/get_x_next. +% +% \begin{macro}[aux]{\@@_scan_alt_rule:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_alt_rule: + { + \@@_scan_keyword:nTF { wWiIdDtThH } + { + \@@_scan_normal_dimen: + \@@_scan_alt_rule: + } + { + \@@_scan_keyword:nTF { hHeEiIgGhHtT } + { + \@@_scan_normal_dimen: + \@@_scan_alt_rule: + } + { + \@@_scan_keyword:nT { dDeEpPtThH } + { + \@@_scan_normal_dimen: + \@@_scan_alt_rule: + } + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_spec:} +% Some \TeX{} primitives accept the keywords |to| and |spread|, +% followed by a dimension. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_spec: + { + \@@_scan_keyword:nTF { tT oO } { \@@_scan_normal_dimen: } + { + \@@_scan_keyword:nT { sS pP rR eE aA dD } + { \@@_scan_normal_dimen: } + } + \@@_scan_left_brace: + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Working with boxes} +% +% \begin{macro}[aux]{\@@_do_box:N} +% When this procedure is called, the last item in +% \cs{g_@@_prev_input_seq} is +% \begin{itemize} +% \item empty if the box is meant to be put in the input stream, +% \item \tn{setbox}\meta{int} if it is meant to be stored somewhere, +% \item \tn{moveright}\meta{dim}, \tn{moveleft}\meta{dim}, +% \tn{lower}\meta{dim}, \tn{raise}\meta{dim} if it is meant to be +% shifted, +% \item \tn{leaders} or \tn{cleaders} or \tn{xleaders}, in which case +% the argument is \cs{c_true_bool} (otherwise \cs{c_false_bool}). +% \end{itemize} +% If a |make_box| command follows, we fetch the operands. If leaders +% are followed by a rule, then this is also ok. In all other cases, +% call \cs{@@_do_box_error:} to clean up. +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_box:N #1 + { + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { make_box } } + { \@@_do_begin_box:N #1 } + { + \bool_if:NTF #1 + { + \@@_cs_case:NnF \l_@@_head_token + { + \tex_hrule:D { \@@_do_leaders_rule: } + \tex_vrule:D { \@@_do_leaders_rule: } + } + { \@@_do_box_error: } + } + { \@@_do_box_error: } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_box_error:} +% Put the (non-|make_box|) command back into the input and complain. +% Then recover by throwing away the action (last item of +% \cs{g_@@_prev_input_seq}). For some reason (this appears to be what +% \TeX{} does), there is no need to remove the after assignment token +% here. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_box_error: + { + \@@_back_input: + \msg_error:nn { unravel } { missing-box } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_begin_box:N} +% We have just found a |make_box| command and placed it into the last +% item of \cs{g_@@_prev_input_seq}. If it is ``simple'' +% (\tn{box}\meta{int}, \tn{copy}\meta{int}, \tn{lastbox}, +% \tn{vsplit}\meta{int} \texttt{to} \meta{dim}) then we grab its +% operands, then call \cs{@@_do_simple_box:N} to finish up. If it is +% \tn{vtop} or \tn{vbox} or \tn{hbox}, we need to work harder. +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_begin_box:N #1 + { + \@@_prev_input:V \l_@@_head_tl + \int_case:nnTF \l_@@_head_char_int + { + { 0 } { \@@_scan_int: } % box + { 1 } { \@@_scan_int: } % copy + { 2 } { } % lastbox + { 3 } % vsplit + { + \@@_scan_int: + \@@_scan_keyword:nF { tT oO } + { + \msg_error:nn { unravel } { missing-to } + \@@_prev_input:n { to } + } + \@@_scan_normal_dimen: + } + } + { \@@_do_simple_box:N #1 } + { \@@_do_box_explicit:N #1 } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_simple_box:N} +% For leaders, we need to fetch a glue. In all cases, retrieve the +% box construction (such as |\raise3pt\vsplit7to5em|). Finally, let +% \TeX{} run the code and print what we have done. +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_simple_box:N #1 + { + \bool_if:NTF #1 { \@@_do_leaders_fetch_skip: } + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \gtl_put_right:NV \g_@@_output_gtl \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_leaders_fetch_skip:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_leaders_fetch_skip: + { + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnTF \l_@@_head_cmd_int + = { \@@_tex_use:n { \mode_if_vertical:TF { vskip } { hskip } } } + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_put_left:NV \l_@@_head_tl \l_@@_tmpa_tl + \@@_do_append_glue: + } + { + \@@_back_input: + \msg_error:nn { unravel } { improper-leaders } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: less intrusive hooking into \everyhbox/\everyvbox? +% \begin{macro}[aux]{\@@_do_box_explicit:N} +% At this point, the last item in \cs{g_@@_prev_input_seq} is +% typically |\setbox0\hbox| or |\raise 3pt\hbox|. Scan for keywords +% |to| and |spread| and a left brace. Install a hook in +% \tn{everyhbox} or \tn{everyvbox} (whichever \TeX{} is going to +% insert in the box). We then retrieve all the material that led to +% the current box into \cs{l_@@_head_tl} in order to print it, then +% let \TeX{} perform the box operation (here we need to provide the +% begin-group token, as it was scanned but not placed in +% \cs{g_@@_prev_input_seq}). \TeX{} inserts \tn{everyhbox} or +% \tn{everyvbox} just after the begin-group token, and the hook we did +% is such that all that material is collected and put into the input +% that we will study. +% We must remember to find a glue for leaders, and for this +% we use a stack of booleans: the top is true if the innermost box is +% part of leaders. +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_box_explicit:N #1 + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_hbox:D + { \@@_box_hook:N \tex_everyhbox:D } + { \@@_box_hook:N \tex_everyvbox:D } + % ^^A todo: TeX calls |normal_paragraph| here. + \@@_scan_spec: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_set_action_text:x + { \tl_to_str:N \l_@@_head_tl \iow_char:N \{ } + \seq_push:Nx \l_@@_leaders_box_seq + { \bool_if:NTF #1 { \mode_if_vertical:TF { v } { h } } { Z } } + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \gtl_gconcat:NNN \g_@@_output_gtl + \g_@@_output_gtl \c_group_begin_gtl + \tl_use:N \l_@@_head_tl + \c_group_begin_token \@@_box_hook_end: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_box_hook:N} +% \begin{macro}[aux]{\@@_box_hook:w, \@@_box_hook_end:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_box_hook:N #1 + { + \tl_set:NV \l_@@_tmpa_tl #1 + \str_if_eq_x:nnF + { \tl_head:N \l_@@_tmpa_tl } { \exp_not:N \@@_box_hook:w } + { + \exp_args:Nx #1 + { + \exp_not:n { \@@_box_hook:w \prg_do_nothing: } + \exp_not:V #1 + } + } + \cs_gset_protected:Npn \@@_box_hook:w ##1 \@@_box_hook_end: + { + \exp_args:No #1 {##1} + \cs_gset_eq:NN \@@_box_hook:w \prg_do_nothing: + \@@_print_action: + \@@_back_input:o {##1} + \@@_set_action_text:x + { \token_to_meaning:N #1 \tl_to_str:o {##1} } + \tl_if_empty:oF {##1} { \@@_print_action: } + } + } +\cs_new_eq:NN \@@_box_hook:w \prg_do_nothing: +\cs_new_eq:NN \@@_box_hook_end: \prg_do_nothing: +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_leaders_rule:} +% After finding a |vrule| or |hrule| command and looking for |depth|, +% |heigh| and |width| keywords, we are in the same situation as after +% finding a box. Fetch the required skip accordingly. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_leaders_rule: + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_alt_rule: + \@@_do_leaders_fetch_skip: + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Paragraphs} +% +% \begin{macro}[int,TF]{\@@_charcode_if_safe:n} +% \begin{macrocode} +\prg_new_protected_conditional:Npnn \@@_charcode_if_safe:n #1 { TF } + { + \bool_if:nTF + { + \int_compare_p:n { #1 = `! } + || \int_compare_p:n { `' <= #1 <= `[ } + || \int_compare_p:n { #1 = `] } + || \int_compare_p:n { ` ` <= #1 <= `z } + } + { \prg_return_true: } + { \prg_return_false: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_char:n, \@@_char:V, \@@_char:x} +% \begin{macrocode} +\group_begin: + \char_set_catcode_other:n { 0 } + \cs_new_protected:Npn \@@_char:n #1 + { + \tex_char:D #1 \scan_stop: + \@@_charcode_if_safe:nTF {#1} + { + \group_begin: + \char_set_lccode:nn { 0 } {#1} + \tex_lowercase:D + { \group_end: \tl_set:Nn \l_@@_tmpa_tl { ^^@ } } + } + { + \tl_set:Nx \l_@@_tmpa_tl + { \exp_not:N \char \int_eval:n {#1} ~ } + } + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_tmpa_tl + \@@_print_action:x { \tl_to_str:N \l_@@_tmpa_tl } + } +\group_end: +\cs_generate_variant:Nn \@@_char:n { V , x } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux] +% {\@@_char_in_mmode:n, \@@_char_in_mmode:V, \@@_char_in_mmode:x} +% \begin{macrocode} +\group_begin: + \char_set_catcode_other:n { 0 } + \cs_new_protected:Npn \@@_char_in_mmode:n #1 + { + \int_compare:nNnTF { \tex_mathcode:D #1 } = { "8000 } + { % math active + \group_begin: + \char_set_lccode:nn { 0 } { \l_@@_tmpa_tl } + \tex_lowercase:D + { \group_end: \gtl_set:Nn \l_@@_head_gtl { ^^@ } } + \@@_back_input: + } + { \@@_char:n {#1} } + } +\group_end: +\cs_generate_variant:Nn \@@_char_in_mmode:n { V , x } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_mathchar:n, \@@_mathchar:x} +% \begin{macrocode} +\cs_new_protected:Npn \@@_mathchar:n #1 + { + \tex_mathchar:D #1 \scan_stop: + \tl_set:Nx \l_@@_tmpa_tl + { \exp_not:N \mathchar \int_eval:n {#1} ~ } + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_tmpa_tl + \@@_print_action:x { \tl_to_str:N \l_@@_tmpa_tl } + } +\cs_generate_variant:Nn \@@_mathchar:n { x } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_new_graf:N} +% The argument is a boolean, indicating whether the paragraph should +% be indented. We have much less work to do here than \TeX{} itself. +% Our only task is to correctly position the \tn{everypar} tokens in +% the input that we will read, rather than letting \TeX{} run the code +% right away. +% \begin{macrocode} +\cs_new_protected:Npn \@@_new_graf:N #1 + { + \tl_set:NV \l_@@_tmpa_tl \tex_everypar:D + \tex_everypar:D { } + \bool_if:NTF #1 { \tex_indent:D } { \tex_noindent:D } + \exp_args:NV \tex_everypar:D \l_@@_tmpa_tl + \@@_back_input:V \l_@@_tmpa_tl + \@@_print_action:x + { + \g_@@_action_text_str \c_space_tl : ~ + \token_to_str:N \everypar = { \tl_to_str:N \l_@@_tmpa_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_end_graf:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_end_graf: + { \mode_if_horizontal:T { \@@_normal_paragraph: } } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: Do we need to do more? +% \begin{macro}[int]{\@@_normal_paragraph:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_normal_paragraph: + { + \tex_par:D + \gtl_gput_right:Nn \g_@@_output_gtl { \par } + \@@_print_action:x { Paragraph~end. } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: do something to the \output routine? +% \begin{macro}[int]{\@@_build_page:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_build_page: + { + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Groups} +% +% ^^A todo: implement \@@_end_align_group: +% ^^A todo: implement \@@_end_no_align_group: (start = \@@_end_graf:) +% ^^A todo: implement \@@_end_output_group: +% ^^A todo: implement \@@_end_math_group: +% ^^A todo: implement \@@_end_disc_group: +% ^^A todo: implement \@@_end_math_choice_group: +% +% \begin{macro}[aux]{\@@_handle_left_brace:} +% When an end-group character is sensed, the result depends on the +% current group type. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_handle_left_brace: + { + \int_case:nnF \etex_currentgrouptype:D + { + { 1 } { \@@_end_simple_group: } % simple + { 2 } { \@@_end_box_group: } % hbox + { 3 } { \@@_end_box_group: } % adjusted_hbox + { 4 } { \@@_end_graf: \@@_end_box_group: } % vbox + { 5 } { \@@_end_graf: \@@_end_box_group: } % vtop + { 6 } { \@@_end_align_group: } % align + { 7 } { \@@_end_no_align_group: } % no_align + { 8 } { \@@_end_output_group: } % output + { 9 } { \@@_end_math_group: } % math + { 10 } { \@@_end_disc_group: } % disc + { 11 } { \@@_end_graf: \@@_end_simple_group: } % insert + { 12 } { \@@_end_graf: \@@_end_simple_group: } % vcenter + { 13 } { \@@_end_math_choice_group: } % math_choice + } + { % bottom_level, semi_simple, math_shift, math_left + \@@_back_input: + \l_@@_head_token + \@@_print_action: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_end_simple_group:} +% This command is used to simply end a group, when there are no +% specific operations to perform. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_end_simple_group: + { + \l_@@_head_token + \gtl_gconcat:NNN \g_@@_output_gtl + \g_@@_output_gtl \c_group_end_gtl + \@@_print_action: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_end_box_group:} +% The end of an explicit box (generated by \tn{vtop}, \tn{vbox}, or +% \tn{hbox}) can either be simple, or can mean that we need to find a +% skip for a \tn{leaders}/\tn{cleaders}/\tn{xleaders} construction. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_end_box_group: + { + \seq_pop:NN \l_@@_leaders_box_seq \l_@@_tmpa_tl + \str_if_eq_x:nnTF \l_@@_tmpa_tl { Z } + { \@@_end_simple_group: } + { + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnTF \l_@@_head_cmd_int + = { \@@_tex_use:n { \l_@@_tmpa_tl skip } } + { + \tl_put_left:Nn \l_@@_head_tl { \c_group_end_token } + \@@_do_append_glue: + } + { + \@@_back_input: + \c_group_end_token \group_begin: \group_end: + \@@_print_action: + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_off_save:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_off_save: + { + \int_compare:nNnTF \etex_currentgrouptype:D = { 0 } + { % bottom-level + \msg_error:nnx { unravel } { extra-close } + { \token_to_meaning:N \l_@@_head_token } + } + { + \@@_back_input: + \int_case:nnF \etex_currentgrouptype:D + { + { 14 } % semi_simple_group + { \gtl_set:Nn \l_@@_head_gtl { \group_end: } } + { 15 } % math_shift_group + { \gtl_set:Nn \l_@@_head_gtl { $ } } % $ + { 16 } % math_left_group + { \gtl_set:Nn \l_@@_head_gtl { \tex_right:D . } } + } + { \gtl_set_eq:NN \l_@@_head_gtl \c_group_end_gtl } + \@@_back_input: + \msg_error:nnx { unravel } { off-save } + { \gtl_to_str:N \l_@@_head_gtl } + } + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Modes} +% ^^A todo: implement \aftergroup and things happening at end-group +% ^^A todo: implement \@@_after_math: +% ^^A todo: implement \@@_goto_inner_math: +% ^^A todo: implement \@@_goto_display_math: +% ^^A todo: implement \@@_scan_math: +% +% \begin{macro}[int] +% {\@@_mode_math:n, \@@_mode_non_math:n, \@@_mode_vertical:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_mode_math:n #1 + { \mode_if_math:TF {#1} { \@@_insert_dollar_error: } } +\cs_new_protected:Npn \@@_mode_non_math:n #1 + { \mode_if_math:TF { \@@_insert_dollar_error: } {#1} } +\cs_new_protected:Npn \@@_mode_vertical:n #1 + { + \mode_if_math:TF + { \@@_insert_dollar_error: } + { \mode_if_horizontal:TF { \@@_head_for_vmode: } {#1} } + } +\cs_new_protected:Npn \@@_mode_non_vertical:n #1 + { + \mode_if_vertical:TF + { \@@_back_input: \@@_new_graf:N \c_true_bool } + {#1} + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_head_for_vmode:} +% See \TeX{}'s |head_for_vmode|. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_head_for_vmode: + { + \mode_if_inner:TF + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_hrule:D + { + \msg_error:nn { unravel } { hrule-bad-mode } + \@@_print_action: + } + { \@@_off_save: } + } + { + \@@_back_input: + \gtl_set:Nn \l_@@_head_gtl { \par } + \@@_back_input: + } + } +% \end{macrocode} +% \end{macro} +% +% \subsection{One step} +% +% \begin{macro}[int]{\@@_do_step:} +% Perform the action if the corresponding command exists. If that +% command does not exist, complain, and leave the token in the output. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_step: + { + \@@_set_action_text: + \bool_if:NT \l_@@_debug_bool + { \iow_term:x { Cmd:~\int_use:N \l_@@_head_cmd_int } } + \cs_if_exist_use:cF + { @@_cmd_ \int_use:N \l_@@_head_cmd_int : } + { \msg_error:nnx { unravel } { internal } { unknown-command } } + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Commands} +% +% We will implement commands in order of their command codes (some of +% the more elaborate commands call auxiliaries defined in other +% sections). +% +% \subsubsection{Characters: from 0 to 15} +% +% This section is about command codes in the range $[0, 15]$. +% \begin{itemize} +% \item |relax=0| for \tn{relax}. +% \item |begin-group_char=1| for begin-group characters (catcode~$1$). +% \item |end-group_char=2| for end-group characters (catcode~$2$). +% \item |math_char=3| for math shift (math toggle in \texttt{expl3}) +% characters (catcode~$3$). +% \item |tab_mark=4| for \tn{span} +% \item |alignment_char=4| for alignment tab characters (catcode~$4$). +% \item |car_ret=5| for \tn{cr} and \tn{crcr}. +% \item |macro_char=6| for macro parameter characters (catcode~$6$). +% \item |superscript_char=7| for superscript characters (catcode~$7$). +% \item |subscript_char=8| for subscript characters (catcode~$8$). +% \item |endv=9| for |?|. +% \item |blank_char=10| for blank spaces (catcode~$10$). +% \item |the_char=11| for letters (catcode~$11$). +% \item |other_char=12| for other characters (catcode~$12$). +% \item |par_end=13| for \tn{par}. +% \item |stop=14| for \tn{end} and \tn{dump}. +% \item |delim_num=15| for \tn{delimiter}. +% \end{itemize} +% Not implemented at all: |endv|. +% +% \tn{relax} does nothing. +% \begin{macrocode} +\@@_new_tex_cmd:nn { relax } % 0 + { \@@_print_action: } +% \end{macrocode} +% +% Begin-group characters are sent to the output, as their grouping +% behaviour may affect the scope of font changes, for instance. The are +% also performed. +% \begin{macrocode} +\@@_new_tex_cmd:nn { begin-group_char } % 1 + { + \gtl_gconcat:NNN \g_@@_output_gtl + \g_@@_output_gtl \c_group_begin_gtl + \@@_print_action: + \l_@@_head_token + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { end-group_char } % 2 + { \@@_handle_left_brace: } +% \end{macrocode} +% +% Math shift characters quit vertical mode, and start math mode. +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_char } % 3 + { + \@@_mode_non_vertical:n + { + \mode_if_math:TF + { + \int_compare:nNnTF + \etex_currentgrouplevel:D = { 15 } % math_shift_group + { \@@_after_math: } + { \@@_off_save: } + } + { + \@@_get_next: + \token_if_eq_catcode:NNTF + \l_@@_head_token \c_math_toggle_token + { + \mode_if_inner:TF + { \@@_back_input: \@@_goto_inner_math: } + { \@@_goto_display_math: } + } + { \@@_back_input: \@@_goto_inner_math: } + } + } + } +% \end{macrocode} +% +% Some commands are errors when they reach \TeX{}'s stomach. Among +% others, |tab_mark=alignment_char|, |car_ret| and |macro_char|. We let +% \TeX{} insert the proper error. +% \begin{macrocode} +\@@_new_tex_cmd:nn { alignment_char } % 4 + { \l_@@_head_token \@@_print_action: } +\@@_new_tex_cmd:nn { car_ret } % 5 + { \l_@@_head_token \@@_print_action: } +\@@_new_tex_cmd:nn { macro_char } % 6 + { \l_@@_head_token \@@_print_action: } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { superscript_char } % 7 + { \@@_mode_math:n { \@@_sub_sup: } } +\@@_new_tex_cmd:nn { subscript_char } % 8 + { \@@_mode_math:n { \@@_sub_sup: } } +\cs_new_protected_nopar:Npn \@@_sub_sup: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_math: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { endv } % 9 + { \msg_error:nn { unravel } { not-implemented } { alignments } } +% \end{macrocode} +% +% Blank spaces are ignored in vertical and math modes in the same way as +% \tn{relax} is in all modes. In horizontal mode, add them to the +% output. +% \begin{macrocode} +\@@_new_tex_cmd:nn { blank_char } % 10 + { + \mode_if_horizontal:T + { + \gtl_gput_right:Nn \g_@@_output_gtl { ~ } + \l_@@_head_token + } + \@@_print_action: + } +% \end{macrocode} +% +% Letters and other characters leave vertical mode. +% \begin{macrocode} +\@@_new_tex_cmd:nn { the_char } % 11 + { + \@@_mode_non_vertical:n + { + \tl_set:Nx \l_@@_tmpa_tl + { ` \@@_token_to_char:N \l_@@_head_token } + \mode_if_math:TF + { \@@_char_in_mmode:V \l_@@_tmpa_tl } + { \@@_char:V \l_@@_tmpa_tl } + } + } +\@@_new_eq_tex_cmd:nn { other_char } { the_char } % 12 +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { par_end } % 13 + { + \@@_mode_non_math:n + { + \mode_if_vertical:TF + { \@@_normal_paragraph: } + { + % if align_state<0 then off_save; + \@@_end_graf: + \mode_if_vertical:T + { \mode_if_inner:F { \@@_build_page: } } + } + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { stop } % 14 + { + \@@_mode_vertical:n + { + \mode_if_inner:TF + { \@@_forbidden_case: } + { + % ^^A todo: unless its_all_over + \int_gdecr:N \g_@@_ends_int + \int_compare:nNnTF \g_@@_ends_int > \c_zero + { + \@@_back_input: + \@@_back_input:n + { + \tex_hbox:D to \tex_hsize:D { } + \tex_vfill:D + \tex_penalty:D - '10000000000 ~ + } + \@@_build_page: + \@@_print_action:x { End~everything! } + } + { + \@@_print_outcome: + \l_@@_head_token + } + } + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { delim_num } % 15 + { + \@@_mode_math:n + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } + } +% \end{macrocode} +% +% \subsubsection{Boxes: from 16 to 31} +% +% \begin{itemize} +% \item |char_num=16| for \tn{char} +% \item |math_char_num=17| for \tn{mathchar} +% \item |mark=18| for \tn{mark} and \tn{marks} +% \item |xray=19| for \tn{show}, \tn{showbox}, \tn{showthe}, +% \tn{showlists}, \tn{showgroups}, \tn{showtokens}, \tn{showifs}. +% \item |make_box=20| for \tn{box}, \tn{copy}, \tn{lastbox}, +% \tn{vsplit}, \tn{vtop}, \tn{vbox}, and \tn{hbox}~(106). +% \item |hmove=21| for \tn{moveright} and \tn{moveleft}. +% \item |vmove=22| for \tn{lower} and \tn{raise}. +% \item |un_hbox=23| for \tn{unhbox} and \tn{unhcopy}. +% \item |unvbox=24| for \tn{unvbox}, \tn{unvcopy}, \tn{pagediscards}, +% and \tn{splitdiscards}. +% \item |remove_item=25| for \tn{unpenalty}~(12), \tn{unkern}~(11), +% \tn{unskip}~(10). +% \item |hskip=26| for \tn{hfil}, \tn{hfill}, \tn{hss}, \tn{hfilneg}, +% \tn{hskip}. +% \item |vskip=27| for \tn{vfil}, \tn{vfill}, \tn{vss}, \tn{vfilneg}, +% \tn{vskip}. +% \item |mskip=28| for \tn{mskip}~(5). +% \item |kern=29| for \tn{kern}~(1). +% \item |mkern=30| for \tn{mkern}~(99). +% \item |leader_ship=31| for \tn{shipout}~(99), \tn{leaders}~(100), +% \tn{cleaders}~(101), \tn{xleaders}~(102). +% \end{itemize} +% +% \tn{char} leaves vertical mode, then scans an integer operand, then +% calls \cs{@@_char_in_mmode:n} or \cs{@@_char:n} depending on the mode. +% See implementation of |the_char| and |other_char|. +% \begin{macrocode} +\@@_new_tex_cmd:nn { char_num } % 16 + { + \@@_mode_non_vertical:n + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \mode_if_math:TF + { \@@_char_in_mmode:x { \tl_tail:N \l_@@_head_tl } } + { \@@_char:x { \tl_tail:N \l_@@_head_tl } } + } + } +% \end{macrocode} +% +% Only allowed in math mode, \tn{mathchar} reads an integer operand, and +% calls \cs{@@_mathchar:n}, which places the corresponding math +% character in the \cs{g_@@_output_gtl}, and in the actual output. +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_char_num } % 17 + { + \@@_mode_math:n + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_mathchar:x { \tl_tail:N \l_@@_head_tl } + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { mark } % 18 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \int_compare:nNnF \l_@@_head_char_int = \c_zero + { \@@_scan_int: } + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_scan_toks:NN \c_false_bool \c_true_bool + \seq_gpop_right:Nn \g_@@_prev_input_seq \l_@@_tmpa_tl + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x + { \tl_to_str:N \l_@@_head_tl \tl_to_str:N \l_@@_tmpa_tl } + \tl_put_right:Nx \l_@@_head_tl + { { \exp_not:N \exp_not:n \exp_not:V \l_@@_tmpa_tl } } + \tl_use:N \l_@@_head_tl + } +% \end{macrocode} +% +% We now implement the primitives \tn{show}, \tn{showbox}, \tn{showthe}, +% \tn{showlists}, \tn{showgroups}, \tn{showtokens} and \tn{showifs}. +% Those with no operand are sent to \TeX{} after printing the action. +% Those with operands print first, then scan their operands, then are +% sent to \TeX{}. The case of \tn{show} is a bit special, as its +% operand is a single token, which cannot easily be put into the +% \cs{g_@@_prev_input_seq} in general. Since no expansion can occur, +% simply grab the token and show it. +% \begin{macrocode} +\@@_new_tex_cmd:nn { xray } % 19 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \int_case:nnF \l_@@_head_char_int + { + { 0 } + { % show + \@@_get_next: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \gtl_head_do:NN \l_@@_head_gtl \l_@@_tmpa_tl + } + { 2 } + { % showthe + \@@_get_x_next: + \@@_scan_something_internal:n { 5 } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \exp_args:Nx \etex_showtokens:D + { \tl_tail:N \l_@@_head_tl } + } + } + { % no operand for showlists, showgroups, showifs + \int_compare:nNnT \l_@@_head_char_int = \c_one % showbox + { \@@_scan_int: } + \int_compare:nNnT \l_@@_head_char_int = \c_five % showtokens + { \@@_scan_toks:NN \c_false_bool \c_false_bool } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + } + } +% \end{macrocode} +% +% |make_box=20| for \tn{box}, \tn{copy}, \tn{lastbox}, +% \tn{vsplit}, \tn{vtop}, \tn{vbox}, and \tn{hbox}~(106). +% \begin{macrocode} +\@@_new_tex_cmd:nn { make_box } % 20 + { + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_back_input: + \@@_do_box:N \c_false_bool + } +% \end{macrocode} +% +% ^^A todo: implement \@@_forbidden_case: +% +% \begin{macro}[aux]{\@@_do_move:} +% Scan a dimension and a box, and perform the shift, printing the +% appropriate action. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_move: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_normal_dimen: + \@@_do_box:N \c_false_bool + } +% \end{macrocode} +% \end{macro} +% +% |hmove=21| for \tn{moveright} and \tn{moveleft}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { hmove } % 21 + { + \mode_if_vertical:TF + { \@@_do_move: } { \@@_forbidden_case: } + } +% \end{macrocode} +% +% |vmove=22| for \tn{lower} and \tn{raise}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { vmove } % 22 + { + \mode_if_vertical:TF + { \@@_forbidden_case: } { \@@_do_move: } + } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_do_unpackage:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_unpackage: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% \end{macro} +% +% |un_hbox=23| for \tn{unhbox} and \tn{unhcopy}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { un_hbox } % 23 + { \@@_mode_non_vertical:n { \@@_do_unpackage: } } +% \end{macrocode} +% +% |unvbox=24| for \tn{unvbox}, \tn{unvcopy}, \tn{pagediscards}, and +% \tn{splitdiscards}. The latter two take no operands, so we just let +% \TeX{} do its thing, then we show the action. +% \begin{macrocode} +\@@_new_tex_cmd:nn { un_vbox } % 24 + { + \@@_mode_vertical:n + { + \int_compare:nNnTF \l_@@_head_char_int > { 1 } + { \l_@@_head_token \@@_print_action: } + { \@@_do_unpackage: } + } + } +% \end{macrocode} +% +% |remove_item=25| for \tn{unpenalty}~(12), \tn{unkern}~(11), +% \tn{unskip}~(10). Those commands only act on \TeX{}'s box/glue data +% structures, which \pkg{unravel} does not (and cannot) care about. +% \begin{macrocode} +\@@_new_tex_cmd:nn { remove_item } % 25 + { \l_@@_head_token \@@_print_action: } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_do_append_glue:} +% For \tn{hfil}, \tn{hfill}, \tn{hss}, \tn{hfilneg} and their vertical +% analogs, simply call the primitive then print the action. For +% \tn{hskip}, \tn{vskip} and \tn{mskip}, read a normal glue or a mu +% glue (\cs{l_@@_head_char_int} is $4$ or~$5$), then call the +% primitive with that operand, and print the whole thing as an action. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_append_glue: + { + \int_compare:nNnTF \l_@@_head_char_int < { 4 } + { \tl_use:N \l_@@_head_tl \@@_print_action: } + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \exp_args:Nf \@@_scan_glue:n + { \int_eval:n { \l_@@_head_char_int - 2 } } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% |hskip=26| for \tn{hfil}, \tn{hfill}, \tn{hss}, \tn{hfilneg}, +% \tn{hskip}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { hskip } % 26 + { \@@_mode_non_vertical:n { \@@_do_append_glue: } } +% \end{macrocode} +% +% |vskip=27| for \tn{vfil}, \tn{vfill}, \tn{vss}, \tn{vfilneg}, +% \tn{vskip}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { vskip } % 27 + { \@@_mode_vertical:n { \@@_do_append_glue: } } +% \end{macrocode} +% +% |mskip=28| for \tn{mskip}~(5). +% \begin{macrocode} +\@@_new_tex_cmd:nn { mskip } % 28 + { \@@_mode_math:n { \@@_do_append_glue: } } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_do_append_kern:} +% See \cs{@@_do_append_glue:}. This function is used for the +% primitives \tn{kern} and \tn{mkern} only. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_append_kern: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_kern:D + { \@@_scan_dimen:NN \c_true_bool \c_false_bool } + { \@@_scan_dimen:NN \c_false_bool \c_false_bool } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% \end{macro} +% +% |kern=29| for \tn{kern}~(1). +% \begin{macrocode} +\@@_new_tex_cmd:nn { kern } % 29 + { \@@_do_append_kern: } +% \end{macrocode} +% +% |mkern=30| for \tn{mkern}~(99). +% \begin{macrocode} +\@@_new_tex_cmd:nn { mkern } % 30 + { \@@_mode_math:n { \@@_do_append_kern: } } +% \end{macrocode} +% +% |leader_ship=31| for \tn{shipout}~(99), \tn{leaders}~(100), +% \tn{cleaders}~(101), \tn{xleaders}~(102). +% \begin{macrocode} +\@@_new_tex_cmd:nn { leader_ship } % 31 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_do_box:N \c_true_bool + } +% \end{macrocode} +% +% \subsubsection{From 32 to 47} +% +% ^^A todo: implement \@@_begin_insert_or_adjust: +% +% \begin{itemize} +% \item |halign=32| +% \item |valign=33| +% \item |no_align=34| +% \item |vrule=35| +% \item |hrule=36| +% \item |insert=37| +% \item |vadjust=38| +% \item |ignore_spaces=39| +% \item |after_assignment=40| +% \item |after_group=41| +% \item |break_penalty=42| +% \item |start_par=43| +% \item |ital_corr=44| +% \item |accent=45| +% \item |math_accent=46| +% \item |discretionary=47| +% \end{itemize} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { halign } % 32 + { \msg_fatal:nnx { unravel } { not-implemented } { halign } } +\@@_new_tex_cmd:nn { valign } % 33 + { \msg_fatal:nnx { unravel } { not-implemented } { valign } } +\@@_new_tex_cmd:nn { no_align } % 34 + { \msg_fatal:nnx { unravel } { not-implemented } { noalign } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { vrule } % 35 + { \@@_mode_non_vertical:n { \@@_do_rule: } } +\@@_new_tex_cmd:nn { hrule } % 36 + { \@@_mode_vertical:n { \@@_do_rule: } } +\cs_new_protected_nopar:Npn \@@_do_rule: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_alt_rule: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { insert } % 37 + { \@@_begin_insert_or_adjust: } +\@@_new_tex_cmd:nn { vadjust } % 38 + { + \mode_if_vertical:TF + { \@@_forbidden_case: } { \@@_begin_insert_or_adjust: } + } +% \end{macrocode} +% +% ^^A todo: implement the internal \pdfprimitive business. +% \begin{macrocode} +\@@_new_tex_cmd:nn { ignore_spaces } % 39 + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_ignorespaces:D + { + \@@_get_x_non_blank: + \@@_set_cmd: + \@@_do_step: + } + { \msg_error:nn { unravel } { not-implemented } { pdfprimitive } } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { after_assignment } % 40 + { + \tl_set_eq:NN \l_@@_tmpa_tl \l_@@_head_tl + \@@_get_next: + \gtl_gset_eq:NN \g_@@_after_assignment_gtl \l_@@_head_gtl + \@@_print_action:x + { + Afterassignment:~\tl_to_str:N \l_@@_tmpa_tl + \gtl_to_str:N \l_@@_head_gtl + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { after_group } % 41 + { \msg_error:nnx { unravel } { not-implemented } { aftergroup } } +% \end{macrocode} +% +% See \cs{@@_do_append_glue:}. +% \begin{macrocode} +\@@_new_tex_cmd:nn { break_penalty } % 42 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { start_par } % 43 + { + \mode_if_vertical:TF + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_noindent:D + { \@@_new_graf:N \c_false_bool } + { \@@_new_graf:N \c_true_bool } + } + { + \int_compare:nNnT \l_@@_head_char_int = { 1 } % indent + { + \tex_hbox:D width \tex_parindent:D { } + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + } + \@@_print_action: + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { ital_corr } % 44 + { + \mode_if_vertical:TF { \@@_forbidden_case: } + { \l_@@_head_token \@@_print_action: } + } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_do_accent:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_accent: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \@@_do_assignments: + \bool_if:nTF + { + \token_if_eq_catcode_p:NN + \l_@@_head_token \c_catcode_letter_token + || + \token_if_eq_catcode_p:NN + \l_@@_head_token \c_catcode_other_token + || + \int_compare_p:nNn + \l_@@_head_cmd_int = { \@@_tex_use:n { char_given } } + } + { \@@_prev_input:V \l_@@_head_tl } + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_char:D + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_int: + } + { \@@_break:w } + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + \@@_break_point: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_math_accent:} +% \TeX{} will complain if \cs{l_@@_head_tl} happens to start with +% \tn{accent} (the user used \tn{accent} in math mode). +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_math_accent: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \@@_scan_math: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { accent } % 45 + { + \@@_mode_non_vertical:n + { + \mode_if_math:TF + { \@@_do_math_accent: } { \@@_do_accent: } + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_accent } % 46 + { \@@_mode_math:n { \@@_do_math_accent: } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { discretionary } % 47 + { \msg_error:nnx { unravel } { not-implemented } { discretionary } } +% \end{macrocode} +% +% \subsubsection{Maths: from 48 to 56} +% +% \begin{itemize} +% \item |eq_no=48| +% \item |left_right=49| +% \item |math_comp=50| +% \item |limit_switch=51| +% \item |above=52| +% \item |math_style=53| +% \item |math_choice=54| +% \item |non_script=55| +% \item |vcenter=56| +% \end{itemize} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { eq_no } % 48 + { \msg_error:nnx { unravel } { not-implemented } { eqno } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { left_right } % 49 + { \msg_error:nnx { unravel } { not-implemented } { left/right } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_comp } % 50 + { \msg_error:nnx { unravel } { not-implemented } { math~comp } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { limit_switch } % 51 + { \msg_error:nnx { unravel } { not-implemented } { limits } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { above } % 52 + { \msg_error:nnx { unravel } { not-implemented } { above } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_style } % 53 + { \msg_error:nnx { unravel } { not-implemented } { math~style } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_choice } % 54 + { \msg_error:nnx { unravel } { not-implemented } { math~choice } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { non_script } % 55 + { \msg_error:nnx { unravel } { not-implemented } { non~script } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { vcenter } % 56 + { \msg_error:nnx { unravel } { not-implemented } { vcenter } } +% \end{macrocode} +% +% \subsubsection{From 57 to 70} +% +% \begin{itemize} +% \item |case_shift=57| +% \item |message=58| +% \item |extension=59| +% \item |in_stream=60| +% \item |begin_group=61| +% \item |end_group=62| +% \item |omit=63| +% \item |ex_space=64| +% \item |no_boundary=65| +% \item |radical=66| +% \item |end_cs_name=67| +% \item |char_given=68| +% \item |math_given=69| +% \item |last_item=70| +% \end{itemize} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { case_shift } % 57 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \exp_after:wN \@@_case_shift:Nn \l_@@_tmpa_tl + } +\cs_new_protected:Npn \@@_case_shift:Nn #1#2 + { + #1 { \@@_back_input:n {#2} } + \@@_print_action:x + { \token_to_meaning:N #1 ~ \tl_to_str:n { {#2} } } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { message } % 58 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_toks_to_str: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% Extensions are implemented in a later section. +% \begin{macrocode} +\@@_new_tex_cmd:nn { extension } % 59 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_extension_operands: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { in_stream } % 60 + { + \seq_put_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_openin:D + { + \@@_scan_int: + \@@_scan_optional_equals: + \@@_scan_file_name: + } + { \@@_scan_int: } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% ^^A todo: take \aftergroup into account +% \begin{macrocode} +\@@_new_tex_cmd:nn { begin_group } % 61 + { + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \@@_print_action: + \l_@@_head_token + } +\@@_new_tex_cmd:nn { end_group } % 62 + { + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \@@_print_action: + \l_@@_head_token + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { omit } % 63 + { \msg_error:nn { unravel } { not-implemented } { omit } } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { ex_space } % 64 + { + \@@_mode_non_vertical:n + { \l_@@_head_token \@@_print_action: } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { no_boundary } % 65 + { + \@@_mode_non_vertical:n + { \l_@@_head_token \@@_print_action: } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { radical } % 66 + { + \@@_mode_math:n + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \@@_scan_math: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } + } +% \end{macrocode} +% +% Let \TeX{} cause the error. +% \begin{macrocode} +\@@_new_tex_cmd:nn { end_cs_name } % 67 + { \l_@@_head_token \@@_print_action: } +% \end{macrocode} +% +% See |the_char| and |other_char|. +% \begin{macrocode} +\@@_new_tex_cmd:nn { char_given } % 68 + { + \@@_mode_non_vertical:n + { + \mode_if_math:TF + { \@@_char_in_mmode:V \l_@@_head_char_int } + { \@@_char:V \l_@@_head_char_int } + } + } +% \end{macrocode} +% +% See |math_char_num|. +% \begin{macrocode} +\@@_new_tex_cmd:nn { math_given } % 69 + { + \@@_mode_math:n + { \@@_mathchar:x { \int_use:N \l_@@_head_char_int } } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_cmd:nn { last_item } % 70 + { \@@_forbidden_case: } +% \end{macrocode} +% +% \subsubsection{Extensions} +% ^^A todo: move this section. +% +% \begin{macro}[int]{\@@_scan_extension_operands:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_extension_operands: + { + \int_case:nnF \l_@@_head_char_int + { + { 0 } % openout + { + \@@_scan_int: + \@@_scan_optional_equals: + \@@_scan_file_name: + } + { 1 } % write + { + \@@_scan_int: + \@@_scan_toks:NN \c_false_bool \c_false_bool + } + { 2 } % closeout + { \@@_scan_int: } + { 3 } % special + { \@@_scan_toks_to_str: } + { 4 } % immediate + { \@@_scan_immediate_operands: } + { 5 } % setlanguage + { + \mode_if_horizontal:TF + { \@@_scan_int: } + { \msg_error:nn { unravel } { invalid-mode } } + } + { 6 } % pdfliteral + { + \@@_scan_keyword:nF { dD iI rR eE cC tT } + { \@@_scan_keyword:n { pP aA gG eE } } + \@@_scan_pdf_ext_toks: + } + { 7 } % pdfobj + { + \@@_scan_keyword:nTF + { rR eE sS eE rR vV eE oO bB jJ nN uU mM } + { \@@_skip_optional_space: } + { + \@@_scan_keyword:nF { uU sS eE oO bB jJ nN uU mM } + { \@@_scan_int: } + \@@_scan_keyword:nT { sS tT rR eE aA mM } + { + \@@_scan_keyword:nT { aA tT tT rR } + { \@@_scan_pdf_ext_toks: } + } + \@@_scan_keyword:n { fF iI lL eE } + \@@_scan_pdf_ext_toks: + } + } + { 8 } % pdfrefobj + { \@@_scan_int: } + { 9 } % pdfxform + { + \@@_scan_keyword:nT { aA tT tT rR } + { \@@_scan_pdf_ext_toks: } + \@@_scan_keyword:nTF { rR eE sS oO uU rR cC eE sS } + { \@@_scan_pdf_ext_toks: } + \@@_scan_int: + } + { 10 } % pdfrefxform + { \@@_scan_int: } + { 11 } % pdfximage + { \@@_scan_image: } + { 12 } % pdfrefximage + { \@@_scan_int: } + { 13 } % pdfannot + { + \@@_scan_keyword:nTF + { rR eE sS eE rR vV eE oO bB jJ nN uU mM } + { \@@_scan_optional_space: } + { + \@@_scan_keyword:nT { uU sS eE oO bB jJ nN uU mM } + { \@@_scan_int: } + \@@_scan_alt_rule: + \@@_scan_pdf_ext_toks: + } + } + { 14 } % pdfstartlink + { + \mode_if_vertical:TF + { \msg_error:nn { unravel } { invalid-mode } } + { + \@@_scan_rule_attr: + \@@_scan_action: + } + } + { 15 } % pdfendlink + { + \mode_if_vertical:T + { \msg_error:nn { unravel } { invalid-mode } } + } + { 16 } % pdfoutline + { + \@@_scan_keyword:nT { aA tT tT rR } + { \@@_scan_pdf_ext_toks: } + \@@_scan_action: + \@@_scan_keyword:nT { cC oO uU nN tT } + { \@@_scan_int: } + \@@_scan_pdf_ext_toks: + } + { 17 } % pdfdest + { \@@_scan_pdfdest_operands: } + { 18 } % pdfthread + { \@@_scan_rule_attr: \@@_scan_thread_id: } + { 19 } % pdfstartthread + { \@@_scan_rule_attr: \@@_scan_thread_id: } + { 20 } % pdfendthread + { } + { 21 } % pdfsavepos + { } + { 22 } % pdfinfo + { \@@_scan_pdf_ext_toks: } + { 23 } % pdfcatalog + { + \@@_scan_pdf_ext_toks: + \@@_scan_keyword:n { oO pP eE nN aA cC tT iI oO nN } + { \@@_scan_action: } + } + { 24 } % pdfnames + { \@@_scan_pdf_ext_toks: } + { 25 } % pdffontattr + { + \@@_scan_font_ident: + \@@_scan_pdf_ext_toks: + } + { 26 } % pdfincludechars + { + \@@_scan_font_ident: + \@@_scan_pdf_ext_toks: + } + { 27 } % pdfmapfile + { \@@_scan_pdf_ext_toks: } + { 28 } % pdfmapline + { \@@_scan_pdf_ext_toks: } + { 29 } % pdftrailer + { \@@_scan_pdf_ext_toks: } + { 30 } % pdfresettimer + { } + { 31 } % pdffontexpand + { + \@@_scan_font_ident: + \@@_scan_optional_equals: + \@@_scan_int: + \@@_scan_int: + \@@_scan_int: + \@@_scan_keyword:nT { aAuUtToOeExXpPaAnNdD } + { \@@_skip_optional_space: } + } + { 32 } % pdfsetrandomseed + { \@@_scan_int: } + { 33 } % pdfsnaprefpoint + { } + { 34 } % pdfsnapy + { \@@_scan_normal_glue: } + { 35 } % pdfsnapycomp + { \@@_scan_int: } + { 36 } % pdfglyphtounicode + { + \@@_scan_pdf_ext_toks: + \@@_scan_pdf_ext_toks: + } + { 37 } % pdfcolorstack + { \@@_scan_pdfcolorstack_operands: } + { 38 } % pdfsetmatrix + { \@@_scan_pdf_ext_toks: } + { 39 } % pdfsave + { } + { 40 } % pdfrestore + { } + { 41 } % pdfnobuiltintounicode + { \@@_scan_font_ident: } + } + { } % no other cases. + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_pdfcolorstack_operands:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_pdfcolorstack_operands: + { + \@@_scan_int: + \@@_scan_keyword:nF { sSeEtT } + { + \@@_scan_keyword:nF { pPuUsShH } + { + \@@_scan_keyword:nF { pPoOpP } + { + \@@_scan_keyword:nF { cCuUrRrReEnNtT } + { + \msg_error:nn { unravel } + { color-stack-action-missing } + } + } + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_rule_attr:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_rule_attr: + { + \@@_scan_alt_rule: + \@@_scan_keyword:nT { aA tT tT rR } + { \@@_scan_pdf_ext_toks: } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_action:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_action: + { + \@@_scan_keyword:nTF { uUsSeErR } + { \@@_scan_pdf_ext_toks: } + { + \@@_scan_keyword:nF { gGoOtToO } + { + \@@_scan_keyword:nF { tThHrReEaAdD } + { \msg_error:nn { unravel } { action-type-missing } } + } + } + \@@_scan_keyword:nT { fFiIlLeE } + { \@@_scan_pdf_ext_toks: } + \@@_scan_keyword:nTF { pPaAgGeE } + { + \@@_scan_int: + \@@_scan_pdf_ext_toks: + } + { + \@@_scan_keyword:nTF { nNaAmMeE } + { \@@_scan_pdf_ext_toks: } + { + \@@_scan_keyword:nTF { nNuUmM } + { \@@_scan_int: } + { \msg_error:nn { unravel } { identifier-type-missing } } + } + } + \@@_scan_keyword:nTF { nNeEwWwWiInNdDoOwW } + { \@@_skip_optional_space: } + { + \@@_scan_keyword:nT { nNoOnNeEwWwWiInNdDoOwW } + { \@@_skip_optional_space: } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_image:} +% Used by \tn{pdfximage}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_image: + { + \@@_scan_rule_attr: + \@@_scan_keyword:nTF { nNaAmMeEdD } + { \@@_scan_pdf_ext_toks: } + { + \@@_scan_keyword:nT { pPaAgGeE } + { \@@_scan_int: } + } + \@@_scan_keyword:nT { cCoOlLoOrRsSpPaAcCeE } + { \@@_scan_int: } + \@@_scan_pdf_ext_toks: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_scan_immediate_operands:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_immediate_operands: + { + \@@_get_x_next: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { extension } } + { + \int_compare:nNnTF + \l_@@_head_char_int < { 3 } % openout, write, closeout + { \@@_scan_immediate_operands_aux: } + { + \int_case:nnF \l_@@_head_char_int + { + { 7 } { \@@_scan_extension_operands_aux: } % pdfobj + { 9 } { \@@_scan_extension_operands_aux: } % pdfxform + { 11 } { \@@_scan_extension_operands_aux: } %pdfximage + } + { \@@_scan_immediate_operands_bad: } + } + } + { \@@_scan_immediate_operands_bad: } + } +\cs_new_protected_nopar:Npn \@@_scan_immediate_operands_aux: + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_extension_operands: + } +\cs_new_protected_nopar:Npn \@@_scan_immediate_operands_bad: + { + \@@_back_input: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl ignored } + \seq_gput_right:Nn \g_@@_prev_input_seq { } + } + +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_scan_pdfdest_operands:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_scan_pdfdest_operands: + { + \@@_scan_keyword:nTF { nNuUmM } + { \@@_scan_int: } + { + \@@_scan_keyword:nTF { nNaAmMeE } + { \@@_scan_pdf_ext_toks: } + { \msg_error:nn { unravel } { identifier-type-missing } } + } + \@@_scan_keyword:nTF { xXyYzZ } + { + \@@_scan_keyword:nT { zZoOoOmM } + { \@@_scan_int: } + } + { + \@@_scan_keyword:nF { fFiItTbBhH } + { + \@@_scan_keyword:nF { fFiItTbBvV } + { + \@@_scan_keyword:nF { fFiItTbB } + { + \@@_scan_keyword:nF { fFiItThHhH } + { + \@@_scan_keyword:nF { fFiItTvV } + { + \@@_scan_keyword:nTF + { fFiItTrR } + { + \@@_skip_optional_space: + \@@_scan_alt_rule: + \use_none:n + } + { + \@@_scan_keyword:nF + { fFiItT } + { + \msg_error:nn { unravel } + { + destination-type-missing + } + } + } + } + } + } + } + } + } + \@@_skip_optional_space: + } +% \end{macrocode} +% \end{macro} +% +% \subsubsection{Assignments} +% +% ^^A todo: introduce \@@_tmp:w +% Quoting \texttt{tex.web}: ``Every prefix, and every command code that +% might or might not be prefixed, calls the action procedure +% |prefixed_command|. This routine accumulates a sequence of prefixes +% until coming to a non-prefix, then it carries out the command.'' +% We define all those commands in one go, from +% |max_non_prefixed_command+1=71| to |max_command=102|. +% \begin{macrocode} +\cs_set_protected_nopar:Npn \@@_tmp:w + { + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_prefixed_command: + } +\int_step_inline:nnnn + { \@@_tex_use:n { max_non_prefixed_command } + 1 } + { 1 } + { \@@_tex_use:n { max_command } } + { \cs_new_eq:cN { @@_cmd_#1: } \@@_tmp:w } +% \end{macrocode} +% +% \begin{macro}[int]{\@@_prefixed_command:} +% Accumulated prefix codes so far are stored as the last item of +% \cs{g_@@_prev_input_seq}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_prefixed_command: + { + \int_while_do:nNnn + \l_@@_head_cmd_int = { \@@_tex_use:n { prefix } } + { + \@@_prev_input:V \l_@@_head_tl + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnF \l_@@_head_cmd_int + > { \@@_tex_use:n { max_non_prefixed_command } } + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \msg_error:nnxx { unravel } { erroneous-prefixes } + { \tl_to_str:N \l_@@_tmpa_tl } + { \tl_to_str:N l_@@_head_tl } + \@@_back_input: + \@@_omit_after_assignment:w + } + } + % ^^A todo: Discard non-\global prefixes if they are irrelevant + % ^^A todo: Adjust for the setting of \globaldefs + \cs_if_exist_use:cF + { @@_prefixed_ \int_use:N \l_@@_head_cmd_int : } + { + \msg_error:nnx { unravel } { internal } { prefixed } + \@@_omit_after_assignment:w + } + \@@_after_assignment: + } +% \end{macrocode} +% \end{macro} +% We now need to implement prefixed commands, for command codes in the +% range $[71,102]$, with the exception of |prefix=93|, which would have +% been collected by the \cs{@@_prefixed_command:} loop. +% +% \begin{macro}[aux]{\@@_after_assignment:} +% \begin{macro}[aux]{\@@_omit_after_assignment:w} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_after_assignment: + { + \@@_back_input_gtl:N \g_@@_after_assignment_gtl + \gtl_gclear:N \g_@@_after_assignment_gtl + } +\cs_new_protected_nopar:Npn \@@_omit_after_assignment:w + #1 \@@_after_assignment: { } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[int]{\@@_prefixed_new:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_prefixed_new:nn #1#2 + { + \cs_new_protected_nopar:cpn + { @@_prefixed_ \@@_tex_use:n {#1} : } {#2} + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_assign_token:n} +% ^^A todo: wrong printed value for \count123=123\count\count123=987. +% \begin{macrocode} +\cs_new_protected:Npn \@@_assign_token:n #1 + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + #1 + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_assigned_token: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_assign_register:} +% ^^A todo: wrong printed value for \count123=123\count\count123=987. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_assign_register: + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_assigned_register: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_assign_value:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_assign_value:nn #1#2 + { + \tl_if_empty:nF {#1} + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + #1 + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + } + \@@_prev_input:V \l_@@_head_tl + \tl_set_eq:NN \l_@@_defined_tl \l_@@_head_tl + \@@_scan_optional_equals: + #2 + \@@_assign_register: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_assign_toks:} +% \begin{macrocode} +\@@_prefixed_new:nn { toks_register } % 71 + { + \int_compare:nNnT \l_@@_head_char_int = \c_zero + { % \toks + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + } + \@@_assign_toks: + } +\@@_prefixed_new:nn { assign_toks } % 72 + { \@@_assign_toks: } +\cs_new_protected_nopar:Npn \@@_assign_toks: + { + \@@_prev_input_silent:V \l_@@_head_tl + \@@_print_action: + \tl_set_eq:NN \l_@@_defined_tl \l_@@_head_tl + \@@_scan_optional_equals: + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { toks_register } } + { + \@@_prev_input:V \l_@@_head_tl + \int_compare:nNnT \l_@@_head_char_int = \c_zero + { \@@_scan_int: } + } + { + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { assign_toks } } + { \@@_prev_input:V \l_@@_head_tl } + { + \@@_back_input: + \@@_scan_toks:NN \c_false_bool \c_false_bool + } + } + \@@_assign_register: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_prefixed_new:nn { assign_int } % 73 + { \@@_assign_value:nn { } { \@@_scan_int: } } +\@@_prefixed_new:nn { assign_dimen } % 74 + { \@@_assign_value:nn { } { \@@_scan_normal_dimen: } } +\@@_prefixed_new:nn { assign_glue } % 75 + { \@@_assign_value:nn { } { \@@_scan_normal_glue: } } +\@@_prefixed_new:nn { assign_mu_glue } % 76 + { \@@_assign_value:nn { } { \@@_scan_mu_glue: } } +\@@_prefixed_new:nn { assign_font_dimen } % 77 + { + \@@_assign_value:nn + { \@@_scan_int: \@@_scan_font_ident: } + { \@@_scan_normal_dimen: } + } +\@@_prefixed_new:nn { assign_font_int } % 78 + { + \@@_assign_value:nn + { \@@_scan_font_int: } { \@@_scan_int: } + } +\@@_prefixed_new:nn { set_aux } % 79 + { % prevdepth = 1, spacefactor = 0 + \int_compare:nNnTF \l_@@_head_char_int = \c_one + { \@@_assign_value:nn { } { \@@_scan_normal_dimen: } } + { \@@_assign_value:nn { } { \@@_scan_int: } } + } +\@@_prefixed_new:nn { set_prev_graf } % 80 + { \@@_assign_value:nn { } { \@@_scan_int: } } +\@@_prefixed_new:nn { set_page_dimen } % 81 + { \@@_assign_value:nn { } { \@@_scan_normal_dimen: } } +\@@_prefixed_new:nn { set_page_int } % 82 + { \@@_assign_value:nn { } { \@@_scan_int: } } +\@@_prefixed_new:nn { set_box_dimen } % 83 + { + \@@_assign_value:nn + { \@@_scan_int: } { \@@_scan_normal_dimen: } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_prefixed_new:nn { set_shape } % 84 + { + \@@_assign_value:nn { \@@_scan_int: } + { + \prg_replicate:nn + { + \tl_if_head_eq_meaning:VNT + \l_@@_defined_tl \tex_parshape:D { \c_two * } + \tl_tail:N \l_@@_defined_tl + } + { \@@_scan_int: } + } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_prefixed_new:nn { def_code } % 85 + { + \@@_assign_value:nn + { \@@_scan_int: } { \@@_scan_int: } + } +\@@_prefixed_new:nn { def_family } % 86 + { + \@@_assign_value:nn + { \@@_scan_int: } { \@@_scan_font_ident: } + } +\@@_prefixed_new:nn { set_font } % 87 + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_put_left:NV \l_@@_head_tl \l_@@_tmpa_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \gtl_gput_right:NV \g_@@_output_gtl \l_@@_head_tl + \@@_print_action: + } +\@@_prefixed_new:nn { def_font } % 88 + { + \@@_prev_input_silent:V \l_@@_head_tl + \@@_set_action_text:x { \tl_to_str:N \l_@@_head_tl } + \@@_scan_r_token: + \@@_print_action:x + { \g_@@_action_text_str \tl_to_str:N \l_@@_defined_tl } + \@@_scan_optional_equals: + \@@_scan_file_name: + \bool_gset_true:N \g_@@_name_in_progress_bool + \@@_scan_keyword:nTF { aAtT } + { \@@_scan_normal_dimen: } + { + \@@_scan_keyword:nT { sS cC aA lL eE dD } + { \@@_scan_int: } + } + \bool_gset_false:N \g_@@_name_in_progress_bool + \@@_assign_token:n { } + } +% \end{macrocode} +% +% |register=89|, |advance=90|, |multiply=91|, |divide=92| are +% implemented elsewhere. |prefix=93| is never needed (see explanation +% above). +% +% |let|, |futurelet| +% \begin{macrocode} +\@@_prefixed_new:nn { let } % 94 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_let:D + { % |let| + \@@_scan_r_token: + \seq_get_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_print_action:x { \tl_to_str:N \l_@@_tmpa_tl } + \@@_get_next: + \bool_while_do:nn + { \token_if_eq_catcode_p:NN \l_@@_head_token \c_space_token } + { \@@_get_next: } + \tl_if_eq:NNT \l_@@_head_tl \c_@@_eq_tl + { \@@_get_next: } + \token_if_eq_catcode:NNT \l_@@_head_token \c_space_token + { \@@_get_next: } + } + { % |futurelet| + \@@_scan_r_token: + \seq_get_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_print_action:x { \tl_to_str:N \l_@@_tmpa_tl } + \@@_get_next: + \gtl_set_eq:NN \l_@@_tmpb_gtl \l_@@_head_gtl + \@@_get_next: + \@@_back_input: + \gtl_set_eq:NN \l_@@_head_gtl \l_@@_tmpb_gtl + \@@_back_input: + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_put_right:Nn \l_@@_tmpa_tl { = ~ \l_@@_head_token } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \use:x + { + \exp_not:V \l_@@_head_tl + \tex_let:D \tl_tail:N \l_@@_tmpa_tl + } + \@@_print_assigned_token: + } +% \end{macrocode} +% +% ^^A todo: print the temporary relax assignment? +% \begin{macrocode} +\@@_prefixed_new:nn { shorthand_def } % 95 + { + \@@_prev_input_silent:V \l_@@_head_tl + \tl_set:Nx \l_@@_prev_action_tl + { \tl_to_str:N \l_@@_head_tl } + \@@_scan_r_token: + \@@_print_action:x + { \l_@@_prev_action_tl \tl_to_str:N \l_@@_defined_tl } + \exp_after:wN \cs_set_eq:NN \l_@@_defined_tl \scan_stop: + \@@_scan_optional_equals: + \@@_scan_int: + \@@_assign_token:n { } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_prefixed_new:nn { read_to_cs } % 96 + { + \@@_prev_input:V \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + \@@_scan_int: + \@@_scan_keyword:nF { tToO } + { + \msg_error:nn { unravel } { missing-to } + \@@_prev_input:n { to } + } + \@@_scan_r_token: + \@@_assign_token:n { } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_prefixed_new:nn { def } % 97 + { + \seq_get_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_set:NV \l_@@_defining_tl \l_@@_tmpa_tl + \tl_put_right:NV \l_@@_defining_tl \l_@@_head_tl + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \int_compare:nNnTF \l_@@_head_char_int < \c_two + { % def/gdef + \@@_scan_r_token: + \tl_put_right:NV \l_@@_defining_tl \l_@@_defined_tl + \@@_scan_toks:NN \c_true_bool \c_false_bool + } + { % edef/xdef + \@@_scan_r_token: + \tl_put_right:NV \l_@@_defining_tl \l_@@_defined_tl + \@@_scan_toks:NN \c_true_bool \c_true_bool + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_prev_input:V \l_@@_head_tl + \@@_assign_token:n + { \tl_set_eq:NN \l_@@_head_tl \l_@@_defining_tl } + } +% \end{macrocode} +% +% \tn{setbox} is a bit special: directly put it in +% \cs{g_@@_prev_input_seq} with the prefixes; the box code will take +% care of things, and expects a single item containing what it needs to +% do. +% \begin{macrocode} +\@@_prefixed_new:nn { set_box } % 98 + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_int: + \@@_scan_optional_equals: + \bool_if:NTF \g_@@_set_box_allowed_bool + { \@@_do_box:N \c_false_bool } + { + \msg_error:nn { unravel } { improper-setbox } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_omit_after_assignment:w + } + } +% \end{macrocode} +% +% ^^A todo: \hyphenation{...{...}...} recovers weirdly (no nesting). +% \tn{hyphenation} and \tn{patterns} +% \begin{macrocode} +\@@_prefixed_new:nn { hyph_data } % 99 + { + \@@_prev_input:V \l_@@_head_tl + \@@_scan_toks:NN \c_false_bool \c_false_bool + \@@_assign_token:n { } + } +% \end{macrocode} +% +% ^^A todo: the implementation of |set_interaction| looks fishy +% \begin{macrocode} +\@@_prefixed_new:nn { set_interaction } % 100 + { + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_put_right:NV \l_@@_head_tl \l_@@_tmpa_tl + \tl_use:N \l_@@_head_tl \scan_stop: + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% +% \begin{macrocode} +\@@_prefixed_new:nn { letterspace_font } % 101 + { + % ^^A todo... + % new_letterspaced_font(a); + \msg_error:nnx { unravel } { not-implemented } { letterspace-font } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_omit_after_assignment:w + } +\@@_prefixed_new:nn { pdf_copy_font } % 102 + { + % ^^A todo... + % make_font_copy(a); + \msg_error:nnx { unravel } { not-implemented } { pdf-copy-font } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_omit_after_assignment:w + } +% \end{macrocode} +% +% Changes to numeric registers (\tn{count}, \tn{dimen}, \tn{skip}, +% \tn{muskip}, and commands with a built-in number). +% \begin{macrocode} +\@@_prefixed_new:nn { register } % 89 + { \@@_do_register:N \c_zero } +\@@_prefixed_new:nn { advance } % 90 + { \@@_do_operation:N \c_one } +\@@_prefixed_new:nn { multiply } % 91 + { \@@_do_operation:N \c_two } +\@@_prefixed_new:nn { divide } % 92 + { \@@_do_operation:N \c_three } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_do_operation:N, \@@_do_operation_fail:w} +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_operation:N #1 + { + \@@_prev_input_silent:V \l_@@_head_tl + \@@_print_action: + \@@_get_x_next: + \@@_set_cmd: + \int_compare:nNnTF + \l_@@_head_cmd_int > { \@@_tex_use:n { assign_mu_glue } } + { + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { register } } + { \@@_do_register:N #1 } + { \@@_do_operation_fail:w } + } + { + \int_compare:nNnTF + \l_@@_head_cmd_int < { \@@_tex_use:n { assign_int } } + { \@@_do_operation_fail:w } + { + \@@_prev_input:V \l_@@_head_tl + \exp_args:NNf \@@_do_register_set:Nn #1 + { + \int_eval:n + { + \l_@@_head_cmd_int + - \@@_tex_use:n { assign_toks } + } + } + } + } + } +\cs_new_protected_nopar:Npn \@@_do_operation_fail:w + { + \msg_error:nn { unravel } { after-advance } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_omit_after_assignment:w + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_register:N, \@@_do_register_aux:Nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_register:N #1 + { + \exp_args:NNV \@@_do_register_aux:Nn #1 + \l_@@_head_char_int + } +\cs_new_protected:Npn \@@_do_register_aux:Nn #1#2 + { + \int_compare:nNnTF { \tl_tail:n {#2} } = \c_zero + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_scan_int: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_prev_input_silent:V \l_@@_head_tl + } + { + \@@_prev_input_silent:V \l_@@_head_tl + \@@_print_action: + } + \tl_set_eq:NN \l_@@_defined_tl \l_@@_head_tl + \exp_args:NNf \@@_do_register_set:Nn #1 + { \int_eval:n { #2 / 1 000 000 } } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_do_register_set:Nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_do_register_set:Nn #1#2 + { + \int_compare:nNnTF {#1} = \c_zero + { % truly register command + \@@_scan_optional_equals: + } + { % \advance, \multiply, \divide + \@@_scan_keyword:nF { bByY } + { \@@_prev_input_silent:n { by } } + } + \int_compare:nNnTF {#1} < \c_two + { + \int_case:nnF {#2} + { + { 1 } { \@@_scan_int: } % count + { 2 } { \@@_scan_normal_dimen: } % dim + { 3 } { \@@_scan_normal_glue: } % glue + { 4 } { \@@_scan_mu_glue: } % muglue + } + { \msg_error:nnx { unravel } { internal } { do-reg=#2 } } + } + { \@@_scan_int: } + \@@_assign_register: + } +% \end{macrocode} +% \end{macro} +% +% The following is used for instance when making accents. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_do_assignments: + { + \@@_get_x_non_relax: + \@@_set_cmd: + \int_compare:nNnT + \l_@@_head_cmd_int + > { \@@_tex_use:n { max_non_prefixed_command } } + { + \bool_gset_false:N \g_@@_set_box_allowed_bool + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_prefixed_command: + \bool_gset_true:N \g_@@_set_box_allowed_bool + \@@_do_assignments: + } + } +% \end{macrocode} +% +% \subsection{Expandable primitives} +% +% This section implements expandable primitives, which have the +% following command codes: +% \begin{itemize} +% \item |undefined_cs=103| for undefined control sequences (not quite a +% primitive). +% \item |expand_after=104| for \tn{expandafter} and \tn{unless}. +% \item |no_expand=105| for \tn{noexpand} and \tn{pdfprimitive}. +% \item |input=106| for \tn{input}, \tn{endinput} and \tn{scantokens}. +% \item |if_test=107| for the conditionals, \tn{if}, \tn{ifcat}, +% \tn{ifnum}, \tn{ifdim}, \tn{ifodd}, \tn{ifvmode}, \tn{ifhmode}, +% \tn{ifmmode}, \tn{ifinner}, \tn{ifvoid}, \tn{ifhbox}, \tn{ifvbox}, +% \tn{ifx}, \tn{ifeof}, \tn{iftrue}, \tn{iffalse}, \tn{ifcase}, +% \tn{ifdefined}, \tn{ifcsname}, \tn{iffontchar}, \tn{ifincsname}, +% \tn{ifpdfprimitive}, \tn{ifpdfabsnum}, and \tn{ifpdfabsdim}. +% \item |fi_or_else=108| for \tn{fi}, \tn{else} and \tn{or}. +% \item |cs_name=109| for \tn{csname}. +% \item |convert=110| for \tn{number}, \tn{romannumeral}, \tn{string}, +% \tn{meaning}, \tn{fontname}, \tn{eTeXrevision}, \tn{pdftexrevision}, +% \tn{pdftexbanner}, \tn{pdffontname}, \tn{pdffontobjnum}, +% \tn{pdffontsize}, \tn{pdfpageref}, \tn{pdfxformname}, +% \tn{pdfescapestring}, \tn{pdfescapename}, \tn{leftmarginkern}, +% \tn{rightmarginkern}, \tn{pdfstrcmp}, \tn{pdfcolorstackinit}, +% \tn{pdfescapehex}, \tn{pdfunescapehex}, \tn{pdfcreationdate}, +% \tn{pdffilemoddate}, \tn{pdffilesize}, \tn{pdfmdfivesum}, +% \tn{pdffiledump}, \tn{pdfmatch}, \tn{pdflastmatch}, +% \tn{pdfuniformdeviate}, \tn{pdfnormaldeviate}, \tn{pdfinsertht}, +% \tn{pdfximagebbox}, and \tn{jobname}. +% \item |the=111| for \tn{the}, \tn{unexpanded}, and \tn{detokenize}. +% \item |top_bot_mark=112| \tn{topmark}, \tn{firstmark}, \tn{botmark}, +% \tn{splitfirstmark}, \tn{splitbotmark}, \tn{topmarks}, +% \tn{firstmarks}, \tn{botmarks}, \tn{splitfirstmarks}, and +% \tn{splitbotmarks}. +% \item |call=113| for macro calls, implemented by \cs{@@_macro_call:}. +% \item |end_template=117| for \TeX{}'s end template. +% \end{itemize} +% +% Let \TeX{} trigger an error. +% \begin{macrocode} +\@@_new_tex_expandable:nn { undefined_cs } % 103 + { \tl_use:N \l_@@_head_tl \@@_print_action: } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_expandafter:, \@@_unless:, \@@_unless_bad:} +% \begin{macrocode} +\@@_new_tex_expandable:nn { expand_after } % 104 + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_expandafter:D + { \@@_expandafter: } { \@@_unless: } + } +\cs_new_protected_nopar:Npn \@@_expandafter: + { + \gtl_set_eq:NN \l_@@_tmpb_gtl \l_@@_head_gtl + \@@_get_next: + \gtl_concat:NNN \l_@@_head_gtl + \l_@@_tmpb_gtl \l_@@_head_gtl + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_gtl + \@@_print_action:x { \gtl_to_str:N \l_@@_head_gtl } + \@@_get_next: + \@@_token_if_expandable:NTF \l_@@_head_token + { \@@_expand: } + { \@@_back_input: } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_gtl + \@@_set_action_text:x + { back_input: ~ \gtl_to_str:N \l_@@_head_gtl } + \gtl_pop_left:N \l_@@_head_gtl + \@@_back_input: + \@@_print_action: + } +\cs_new_protected_nopar:Npn \@@_unless: + { + \@@_get_token: + \int_compare:nNnTF + \l_@@_head_cmd_int = { \@@_tex_use:n { if_test } } + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_ifcase:D + { \@@_unless_bad: } + { + \tl_put_left:Nn \l_@@_head_tl { \reverse_if:N } + % \int_add:Nn \l_@@_head_char_int { 32 } + \@@_expand_nonmacro: + } + } + { \@@_unless_bad: } + } +\cs_new_protected_nopar:Npn \@@_unless_bad: + { + \msg_error:nn { unravel } { bad-unless } + \@@_back_input: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_noexpand:, \@@_pdfprimitive:} +% \begin{macrocode} +\@@_new_tex_expandable:nn { no_expand } % 105 + { + \token_if_eq_meaning:NNTF \l_@@_head_token \tex_noexpand:D + { \@@_noexpand: } + { \@@_pdfprimitive: } + } +\cs_new_protected_nopar:Npn \@@_noexpand: + { + \@@_get_token: + \@@_back_input: + \@@_token_if_expandable:NT \l_@@_head_token + { + \cs_gset_protected_nopar:Npx \@@_get_next: + { + \cs_gset_protected_nopar:Npn \@@_get_next: + { \exp_not:o { \@@_get_next: } } + \exp_not:o { \@@_get_next: } + \exp_not:n { \cs_set_eq:NN \l_@@_head_token \tex_relax:D } + } + } + } +\cs_new_protected_nopar:Npn \@@_pdfprimitive: + { \msg_error:nnx { unravel } { not-implemented } { pdfprimitive } } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: document that this often fails. +% ^^A todo: better \endinput? Document current behaviour (ignored). +% \begin{macro}[aux]{\@@_scantokens:, \@@_input:} +% \begin{macrocode} +\@@_new_tex_expandable:nn { input } % 106 + { + \int_case:nnF \l_@@_head_char_int + { + { 1 } { \@@_print_action: } % \endinput + { 2 } { \@@_scantokens: } % \scantokens + } + { % 0=\input + \bool_if:NTF \g_@@_name_in_progress_bool + { \@@_insert_relax: } { \@@_input: } + } + } +\cs_new_protected_nopar:Npn \@@_scantokens: + { + \seq_gput_right:Nn \g_@@_prev_input_seq { } + \@@_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \tl_set_rescan:Nno \l_@@_head_tl { } \l_@@_tmpa_tl + \@@_back_input:V \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_tmpa_tl } + } +\cs_new_protected_nopar:Npn \@@_input: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_scan_file_name: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_set:Nx \l_@@_tmpa_tl { \tl_tail:N \l_@@_head_tl } + \@@_tl_gset_input:Nno \g_@@_tmpc_tl { } \l_@@_tmpa_tl + \@@_back_input:V \g_@@_tmpc_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: this wrongly accepts things let to characters. +% \begin{macro}[aux]{\@@_csname_loop:} +% \begin{macrocode} +\@@_new_tex_expandable:nn { cs_name } % 109 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_csname_loop: + \@@_prev_input:V \l_@@_head_tl + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_back_input_tl_o: + } +\cs_new_protected_nopar:Npn \@@_csname_loop: + { + \@@_get_x_next: + \token_if_cs:NTF \l_@@_head_token + { + \cs_if_eq:NNF \l_@@_head_token \tex_endcsname:D + { + \msg_error:nn { unravel } { missing-endcsname } + \@@_back_input: + \tl_set:Nn \l_@@_head_tl { \tex_endcsname:D } + } + } + { + \@@_prev_input_silent:x + { \@@_token_to_char:N \l_@@_head_token } + \@@_csname_loop: + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_new_tex_expandable:nn { convert } % 110 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \int_case:nn \l_@@_head_char_int + { + 0 \@@_scan_int: + 1 \@@_scan_int: + 2 { \@@_get_next: \@@_prev_input:V \l_@@_head_tl } + 3 { \@@_get_next: \@@_prev_input:V \l_@@_head_tl } + 4 \@@_scan_font_ident: + 8 \@@_scan_font_ident: + 9 \@@_scan_font_ident: + { 10 } \@@_scan_font_ident: + { 11 } \@@_scan_int: + { 12 } \@@_scan_int: + { 13 } \@@_scan_pdf_ext_toks: + { 14 } \@@_scan_pdf_ext_toks: + { 15 } \@@_scan_int: + { 16 } \@@_scan_int: + { 17 } \@@_scan_pdfstrcmp: + { 18 } \@@_scan_pdfcolorstackinit: + { 19 } \@@_scan_pdf_ext_toks: + { 20 } \@@_scan_pdf_ext_toks: + { 22 } \@@_scan_pdf_ext_toks: + { 23 } \@@_scan_pdf_ext_toks: + { 24 } + { + \@@_scan_keyword:n { fF iI lL eE } + \@@_scan_pdf_ext_toks: + } + { 25 } \@@_scan_pdffiledump: + { 26 } \@@_scan_pdfmatch: + { 27 } \@@_scan_int: + { 28 } \@@_scan_int: + { 30 } \@@_scan_int: + { 31 } \@@_scan_pdfximagebbox: + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_back_input_tl_o: + } +\cs_new_protected_nopar:Npn \@@_scan_pdfstrcmp: + { + \@@_scan_toks_to_str: + \@@_scan_toks_to_str: + } +\cs_new_protected_nopar:Npn \@@_scan_pdfximagebbox: + { \@@_scan_int: \@@_scan_int: } +\cs_new_protected_nopar:Npn \@@_scan_pdfcolorstackinit: + { + \@@_scan_keyword:nTF { pP aA gG eE } + { \bool_set_true:N \l_@@_tmpa_bool } + { \bool_set_false:N \l_@@_tmpb_bool } + \@@_scan_keyword:nF { dD iI rR eE cC tT } + { \@@_scan_keyword:n { pP aA gG eE } } + \@@_scan_toks_to_str: + } +\cs_new_protected_nopar:Npn \@@_scan_pdffiledump: + { + \@@_scan_keyword:nT { oO fF fF sS eE tT } \@@_scan_int: + \@@_scan_keyword:nT { lL eE nN gG tT hH } \@@_scan_int: + \@@_scan_pdf_ext_toks: + } +\cs_new_protected_nopar:Npn \@@_scan_pdfmatch: + { + \@@_scan_keyword:n { iI cC aA sS eE } + \@@_scan_keyword:nT { sS uU bB cC oO uU nN tT } + { \@@_scan_int: } + \@@_scan_pdf_ext_toks: + \@@_scan_pdf_ext_toks: + } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_get_the:} +% \begin{macrocode} +\@@_new_tex_expandable:nn { the } % 111 + { + \@@_get_the: + \tl_set:Nx \l_@@_tmpa_tl { \exp_args:NV \exp_not:o \l_@@_head_tl } + \@@_back_input:V \l_@@_tmpa_tl + \@@_print_action: + } +\cs_new_protected_nopar:Npn \@@_get_the: + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \int_if_odd:nTF \l_@@_head_char_int + { % \unexpanded, \detokenize + \@@_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_set_action_text:x { \tl_to_str:N \l_@@_head_tl } + } + { % \the + \@@_get_x_next: + \@@_scan_something_internal:n { 5 } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_set_action_text:x + { + \tl_head:N \l_@@_head_tl + => \tl_tail:N \l_@@_head_tl + } + \tl_set:Nx \l_@@_head_tl + { \exp_not:N \exp_not:n { \tl_tail:N \l_@@_head_tl } } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_new_tex_expandable:nn { top_bot_mark } % 112 + { \@@_back_input_tl_o: } +% \end{macrocode} +% +% \begin{macrocode} +\@@_new_tex_expandable:nn { end_template } % 117 + { + \msg_error:nn { unravel } { not-implemented } { end-template } + \@@_back_input_tl_o: + } +% \end{macrocode} +% +% +% \subsubsection{Conditionals} +% +% ^^A todo: simply use \cs{@@_input_gpop:N} right away. +% \begin{macro}[int]{\@@_pass_text:} +% \begin{macro}[aux]{\@@_pass_text_done:w} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_pass_text: + { + \@@_input_if_empty:TF + { \@@_pass_text_empty: } + { + \@@_input_get:N \l_@@_tmpb_gtl + \if_true: + \if_case:w \gtl_head_do:NN \l_@@_tmpb_gtl \c_one + \exp_after:wN \@@_pass_text_done:w + \fi: + \@@_input_gpop:N \l_@@_tmpb_gtl + \exp_after:wN \@@_pass_text: + \else: + \use:c { fi: } + \int_set_eq:NN \l_@@_if_nesting_int \c_one + \@@_input_gpop:N \l_@@_tmpb_gtl + \exp_after:wN \@@_pass_text_nested: + \fi: + } + } +\cs_new_protected_nopar:Npn \@@_pass_text_done:w + { + \@@_get_next: + \token_if_eq_meaning:NNT \l_@@_head_token \fi: { \if_true: } + \else: + } +% \end{macrocode} +% \end{macro} +% \end{macro} +% +% \begin{macro}[aux]{\@@_pass_text_nested:} +% Again, if there is no more input we are in trouble. The +% construction otherwise essentially results in +% \begin{quote} +% \cs{if_true:} \cs{if_true:} \cs{else:} \meta{head} \\ +% \cs{int_decr:N} \cs{l_@@_if_nesting_int} \cs{use_none:nnnnn} \cs{fi:} \\ +% \cs{use_none:nnn} \cs{fi:} \\ +% \cs{int_incr:N} \cs{l_@@_if_nesting_int} \cs{fi:} +% \end{quote} +% If the \meta{head} is a primitive |\if...|, then the \cs{if_true:} +% \cs{else:} ends with the second \cs{fi:}, and the nesting integer is +% incremented before appropriately closing the \cs{if_true:}. If it +% is a normal token or \tn{or} or \tn{else}, \cs{use_none:nnn} cleans +% up, leaving the appropriate number of \cs{fi:}. Finally, if it is +% \cs{fi:}, the nesting integer is decremented before removing most +% \cs{fi:}. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_pass_text_nested: + { + \@@_input_if_empty:TF + { \@@_pass_text_empty: } + { + \@@_input_get:N \l_@@_tmpb_gtl + \if_true: + \if_true: + \gtl_head_do:NN \l_@@_tmpb_gtl \else: + \int_decr:N \l_@@_if_nesting_int + \use_none:nnnnn + \fi: + \use_none:nnn + \fi: + \int_incr:N \l_@@_if_nesting_int + \fi: + \@@_input_gpop:N \l_@@_tmpa_gtl + \int_compare:nNnTF \l_@@_if_nesting_int = \c_zero + { \@@_pass_text: } + { \@@_pass_text_nested: } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_pass_text_empty:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_pass_text_empty: + { + \msg_error:nn { unravel } { runaway-if } + \@@_exit:w + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_cond_push:, \@@_cond_pop:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_cond_push: + { + \tl_gput_left:Nx \g_@@_if_limit_tl + { { \int_use:N \g_@@_if_limit_int } } + \int_gincr:N \g_@@_if_depth_int + \int_gzero:N \g_@@_if_limit_int + } +\cs_new_protected_nopar:Npn \@@_cond_pop: + { + \int_gset:Nn \g_@@_if_limit_int + { \tl_head:N \g_@@_if_limit_tl } + \tl_gset:Nx \g_@@_if_limit_tl + { \tl_tail:N \g_@@_if_limit_tl } + \int_gdecr:N \g_@@_if_depth_int + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_change_if_limit:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_change_if_limit:nn #1#2 + { + \int_compare:nNnTF {#2} = \g_@@_if_depth_int + { \int_gset:Nn \g_@@_if_limit_int {#1} } + { + \tl_clear:N \l_@@_tmpa_tl + \prg_replicate:nn { \g_@@_if_depth_int - #2 - \c_one } + { + \tl_put_right:Nx \l_@@_tmpa_tl + { { \tl_head:N \g_@@_if_limit_tl } } + \tl_gset:Nx \g_@@_if_limit_tl + { \tl_tail:N \g_@@_if_limit_tl } + } + \tl_gset:Nx \g_@@_if_limit_tl + { \l_@@_tmpa_tl {#1} \tl_tail:N \g_@@_if_limit_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_new_tex_expandable:nn { if_test } % 107 + { + \@@_cond_push: + \exp_args:NV \@@_cond_aux:n \g_@@_if_depth_int + } +% \end{macrocode} +% +% \begin{macro}[aux]{\@@_cond_aux:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_cond_aux:n #1 + { + \int_case:nnF \l_@@_head_char_int + { + { 12 } { \@@_test_ifx:n {#1} } + { 16 } { \@@_test_case:n {#1} } + { 21 } { \@@_test_pdfprimitive:n {#1} } % ^^A todo and \unless + } + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \int_case:nn \l_@@_head_char_int + { + { 0 } { \@@_test_two_chars: } % if + { 1 } { \@@_test_two_chars: } % ifcat + { 2 } % ifnum + { \@@_test_two_vals:N \@@_scan_int: } + { 3 } % ifdim + { \@@_test_two_vals:N \@@_scan_normal_dimen: } + { 4 } { \@@_scan_int: } % ifodd + % { 5 } { } % ifvmode + % { 6 } { } % ifhmode + % { 7 } { } % ifmmode + % { 8 } { } % ifinner + { 9 } { \@@_scan_int: } % ifvoid + { 10 } { \@@_scan_int: } % ifhbox + { 11 } { \@@_scan_int: } % ifvbox + { 13 } { \@@_scan_int: } % ifeof + % { 14 } { } % iftrue + % { 15 } { } % iffalse + { 17 } { \@@_test_ifdefined: } % ifdefined + { 18 } { \@@_test_ifcsname: } % ifcsname + { 19 } % iffontchar + { \@@_scan_font_ident: \@@_scan_int: } + % { 20 } { } % ifincsname % ^^A todo: something? + { 22 } % ifpdfabsnum + { \@@_test_two_vals:N \@@_scan_int: } + { 23 } % ifpdfabsdim + { \@@_test_two_vals:N \@@_scan_normal_dimen: } + } + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_set_action_text:x { \tl_to_str:N \l_@@_head_tl } + \l_@@_head_tl \scan_stop: + \exp_after:wN \@@_cond_true:n + \else: + \exp_after:wN \@@_cond_false:n + \fi: + {#1} + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_cond_true:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_cond_true:n #1 + { + \@@_change_if_limit:nn { 3 } {#1} % wait for else/fi + \@@_print_action:x { \g_@@_action_text_str = true } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux] +% {\@@_cond_false:n, \@@_cond_false_loop:n, \@@_cond_false_common:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_cond_false:n #1 + { + \@@_cond_false_loop:n {#1} + \@@_cond_false_common: + \@@_print_action:x { \g_@@_action_text_str = false } + } +\cs_new_protected:Npn \@@_cond_false_loop:n #1 + { + \@@_pass_text: + \int_compare:nNnTF \g_@@_if_depth_int = {#1} + { + \token_if_eq_meaning:NNT \l_@@_head_token \or: + { + \msg_error:nn { unravel } { extra-or } + \@@_cond_false_loop:n {#1} + } + } + { + \token_if_eq_meaning:NNT \l_@@_head_token \fi: + { \@@_cond_pop: } + \@@_cond_false_loop:n {#1} + } + } +\cs_new_protected_nopar:Npn \@@_cond_false_common: + { + \token_if_eq_meaning:NNTF \l_@@_head_token \fi: + { \@@_cond_pop: } + { \int_gset:Nn \g_@@_if_limit_int { 2 } } % wait for fi + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_test_two_vals:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_test_two_vals:N #1 + { + #1 + \@@_get_x_non_blank: + \tl_if_in:nVF { < = > } \l_@@_head_tl + { + \msg_error:nn { unravel } { missing-equals } + \@@_back_input: + \tl_set:Nn \l_@@_head_tl { = } + } + \@@_prev_input:V \l_@@_head_tl + #1 + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: fix interaction with noexpand and active chars +% ^^A todo: fix non-brace begin-group and end-group tokens +% \begin{macro}[aux]{\@@_test_two_chars:, \@@_test_two_chars_aux:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_test_two_chars: + { + \@@_test_two_chars_aux: + \@@_prev_input:V \l_@@_head_tl + \@@_test_two_chars_aux: + \@@_prev_input:V \l_@@_head_tl + } +\cs_new_protected_nopar:Npn \@@_test_two_chars_aux: + { + \@@_get_x_next: + \gtl_if_tl:NF \l_@@_head_gtl + { + \tl_set:Nx \l_@@_head_tl + { + \gtl_if_head_is_group_begin:NTF \l_@@_head_gtl + { \c_group_begin_token } { \c_group_end_token } + } + } + \tl_put_left:Nn \l_@@_head_tl { \exp_not:N } % ^^A todo: prettify. + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_test_ifx:n, \@@_test_ifx_aux:w} +% \begin{macrocode} +\cs_new_protected:Npn \@@_test_ifx:n #1 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \@@_get_next: + \gtl_set_eq:NN \l_@@_tmpb_gtl \l_@@_head_gtl + \@@_get_next: + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_tmpa_tl + \@@_set_action_text:x + { + Compare:~ \tl_to_str:N \l_@@_tmpa_tl + \gtl_to_str:N \l_@@_tmpb_gtl + \gtl_to_str:N \l_@@_head_gtl + } + \gtl_head_do:NN \l_@@_tmpb_gtl \@@_test_ifx_aux:w + \exp_after:wN \@@_cond_true:n + \else: + \exp_after:wN \@@_cond_false:n + \fi: + {#1} + } +\cs_new_nopar:Npn \@@_test_ifx_aux:w + { \gtl_head_do:NN \l_@@_head_gtl \l_@@_tmpa_tl } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_test_case:n, \@@_test_case_aux:nn} +% \begin{macrocode} +\cs_new_protected:Npn \@@_test_case:n #1 + { + \seq_gput_right:NV \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action: + \bool_if:NT \l_@@_debug_bool { \iow_term:n { {\ifcase level~#1} } } + \@@_scan_int: + \seq_get_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \tl_set:Nx \l_@@_head_tl { \tl_tail:N \l_@@_head_tl } + % ^^A does text_case_aux use prev_input_seq? + \exp_args:No \@@_test_case_aux:nn { \l_@@_head_tl } {#1} + \seq_gpop_right:NN \g_@@_prev_input_seq \l_@@_head_tl + \@@_print_action:x { \tl_to_str:N \l_@@_head_tl } + } +\cs_new_protected:Npn \@@_test_case_aux:nn #1#2 + { + \int_compare:nNnTF {#1} = \c_zero + { \@@_change_if_limit:nn { 4 } {#2} } + { + \@@_pass_text: + \int_compare:nNnTF \g_@@_if_depth_int = {#2} + { + \token_if_eq_meaning:NNTF \l_@@_head_token \or: + { + \exp_args:Nf \@@_test_case_aux:nn + { \int_eval:n { #1 - 1 } } {#2} + } + { \@@_cond_false_common: } + } + { + \token_if_eq_meaning:NNT \l_@@_head_token \fi: + { \@@_cond_pop: } + \@@_test_case_aux:nn {#1} {#2} + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_test_ifdefined:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_test_ifdefined: + { + \@@_input_if_empty:TF + { \@@_pass_text_empty: } + { + \@@_input_gpop:N \l_@@_tmpb_gtl + \@@_set_action_text:x + { + Conditional:~ \tl_to_str:N \l_@@_head_tl + \gtl_to_str:N \l_@@_tmpb_gtl + } + \@@_prev_input:x + { + \gtl_if_tl:NTF \l_@@_tmpb_gtl + { \gtl_head:N \l_@@_tmpb_gtl } + { \gtl_to_str:N \l_@@_tmpb_gtl } + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_test_ifcsname:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_test_ifcsname: + { + \@@_csname_loop: + \@@_prev_input:V \l_@@_head_tl + } +% \end{macrocode} +% \end{macro} +% +% \begin{macrocode} +\@@_new_tex_expandable:nn { fi_or_else } % 108 + { + \int_compare:nNnTF \l_@@_head_char_int > \g_@@_if_limit_int + { + \int_compare:nNnTF \g_@@_if_limit_int = \c_zero + { + \int_compare:nNnTF \g_@@_if_depth_int = \c_zero + { \msg_error:nn { unravel } { extra-fi-or-else } } + { \@@_insert_relax: } + } + { \msg_error:nn { unravel } { extra-fi-or-else } } + } + { + \@@_set_action_text: + \int_compare:nNnF \l_@@_head_char_int = \c_two + { + \@@_fi_or_else_loop: + \@@_set_action_text:x + { + \g_@@_action_text_str \c_space_tl + => ~ skipped ~ to ~ \tl_to_str:N \l_@@_head_tl + } + } + % ^^A todo: in this print_action the token itself is missing. + \@@_print_action: + \@@_cond_pop: + } + } +\cs_new_protected_nopar:Npn \@@_fi_or_else_loop: + { + \int_compare:nNnF \l_@@_head_char_int = \c_two + { + \@@_pass_text: + \@@_set_cmd: + \@@_fi_or_else_loop: + } + } +% \end{macrocode} +% +% \subsection{User interaction} +% +% ^^A Not implemented yet: non-hash-doubling version. +% +% \subsubsection{Print} +% +% Let us start with the procedure which prints to the terminal: this +% will help me test the code while I'm writing it. +% +% \begin{macro}[int]{\@@_print:n, \@@_print:x} +% \begin{macrocode} +\cs_new_eq:NN \@@_print:n \iow_term:n +\cs_generate_variant:Nn \@@_print:n { x } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_message:nn} +% The message to be printed should come already detokenized, as~|#2|. +% It will be wrapped to 80 characters per line, with~|#1| before each +% line. +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_message:nn #1 #2 + { \iow_wrap:nnnN { #1 #2 } { #1 } { } \@@_print:n } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_set_action_text:x} +% \begin{macrocode} +\cs_new_protected:Npn \@@_set_action_text:x #1 + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \str_gset:Nx \g_@@_action_text_str {#1} + \group_end: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_set_action_text:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_set_action_text: + { + \@@_set_action_text:x + { + \tl_to_str:N \l_@@_head_tl + \tl_if_single_token:VT \l_@@_head_tl + { = ~ \exp_after:wN \token_to_meaning:N \l_@@_head_tl } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_state:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_state: + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \int_compare:nNnT \g_@@_noise_int > \c_zero + { + \exp_args:Nx \@@_print_state_output:n + { \gtl_to_str:N \g_@@_output_gtl } + \seq_set_map:NNn \l_@@_tmpa_seq \g_@@_prev_input_seq + { \@@_to_str:n {##1} } + \seq_remove_all:Nn \l_@@_tmpa_seq { } + \exp_args:Nx \@@_print_state_prev:n + { \seq_use:Nn \l_@@_tmpa_seq { \\ } } + \exp_args:Nx \@@_print_state_input:n + { \@@_input_to_str: } + } + \group_end: + \@@_prompt: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_state_output:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_state_output:n #1 + { + \tl_if_empty:nF {#1} + { + \int_set:Nn \l_@@_print_int { \str_count:n {#1} } + \@@_print_message:nn { <| ~ } + { + \int_compare:nNnTF + \l_@@_print_int > \g_@@_max_output_int + { + ( + \int_eval:n + { + \l_@@_print_int + - \g_@@_max_output_int + 14 + } ~ + chars + )~ + ... + \str_substr:nnn {#1} + { \l_@@_print_int - \g_@@_max_output_int + 15 } + { \l_@@_print_int } + } + {#1} + } + } + } +% \end{macrocode} +% \end{macro} +% +% ^^A todo: use \cs{g_@@_max_prev_int} +% \begin{macro}[aux]{\@@_print_state_prev:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_state_prev:n #1 + { + % \int_set:Nn \l_@@_print_int { \str_count:n {#1} } + \@@_print_message:nn { || ~ } {#1} + % { + % \int_compare:nNnTF \l_@@_print_int > \g_@@_max_prev_int + % { + % ( + % \int_eval:n + % { \l_@@_print_int - \g_@@_max_prev_int + 14 } ~ + % chars + % )~ + % ... + % \str_substr:nnn {#1} + % { \l_@@_print_int - \g_@@_max_prev_int + 15 } + % { \l_@@_print_int } + % } + % {#1} + % } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_print_state_input:n} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_state_input:n #1 + { + \int_set:Nn \l_@@_print_int { \str_count:n {#1} } + \@@_print_message:nn { |> ~ } + { + \int_compare:nNnTF \l_@@_print_int > \g_@@_max_input_int + { + \str_substr:nnn {#1} { 1 } { \g_@@_max_input_int - 14 } + ...~ + ( + \int_eval:n + { \l_@@_print_int - \g_@@_max_input_int + 14 } ~ + chars + ) + } + {#1} + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[aux]{\@@_print_meaning:} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_meaning: + { + \@@_input_if_empty:TF + { \@@_print_message:nn { } { Empty~input! } } + { + \@@_input_get:N \l_@@_tmpb_gtl + \@@_print_message:nn { } + { + \gtl_head_do:NN \l_@@_tmpb_gtl \token_to_str:N + = \gtl_head_do:NN \l_@@_tmpb_gtl \token_to_meaning:N + } + } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_action:, \@@_print_action:x} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_action: + { + \int_gincr:N \g_@@_step_int + \@@_print_message:nn { } + { + % \\ + [=====~ Step~ \int_use:N \g_@@_step_int \ =====]~ + \int_compare:nNnTF + { \str_count:N \g_@@_action_text_str } + > { \g_@@_max_action_int } + { + \str_substr:Nnn \g_@@_action_text_str + { 1 } { \g_@@_max_action_int - 3 } ... + } + { \g_@@_action_text_str } + % \\ + % \ \ < \int_use:N \g_@@_input_int > % ^^A todo: remove + % \ < \seq_count:N \g_@@_prev_input_seq > % ^^A todo: remove + } + \@@_print_state: + } +\cs_new_protected:Npn \@@_print_action:x #1 + { + \@@_set_action_text:x {#1} + \@@_print_action: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_gtl_action:N} +% \begin{macrocode} +\cs_new_protected:Npn \@@_print_gtl_action:N #1 + { + \@@_print_action:x { \gtl_to_str:N #1 } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_done:x} +% \begin{macrocode} +\cs_new_eq:NN \@@_print_done:x \@@_print_action:x +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_assigned_token:, \@@_print_assigned_register:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_print_assigned_token: + { + \@@_after_assignment: % ^^A todo: simplify + \@@_print_action:x + { + Set~ \exp_after:wN \token_to_str:N \l_@@_defined_tl + = \exp_after:wN \token_to_meaning:N \l_@@_defined_tl + } + \@@_omit_after_assignment:w + } +\cs_new_protected_nopar:Npn \@@_print_assigned_register: + { + \@@_after_assignment: % ^^A todo: simplify + \@@_print_action:x + { + Set~ \exp_after:wN \token_to_str:N \l_@@_defined_tl + \tl_if_single:NT \l_@@_defined_tl + { ( \exp_after:wN \token_to_meaning:N \l_@@_defined_tl ) } + = \exp_after:wN \tex_the:D \l_@@_defined_tl + } + \@@_omit_after_assignment:w + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_welcome:} +% Welcoming message. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_print_welcome: + { + \@@_print_message:nn { } + { + \\ + ========~ Welcome~ to~ the~ unravel~ package~ ========\\ + \iow_indent:n + { + "<|"~ denotes~ the~ output~ to~ TeX's~ stomach. \\ + "||"~ denotes~ tokens~ waiting~ to~ be~ used. \\ + "|>"~ denotes~ tokens~ that~ we~ will~ act~ on. \\ + Press~<enter>~to~continue;~'h'~<enter>~for~help. \\ + } + } + \@@_print_state: + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_print_outcome:} +% Final message. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_print_outcome: + { + % \int_gset_eq:NN \g_@@_max_input_int \c_max_int + % \int_gset_eq:NN \g_@@_max_prev_int \c_max_int + % \int_gset_eq:NN \g_@@_max_output_int \c_max_int + % \@@_print_state: + \@@_print_message:nn { } { [=====~The~end!~=====] \\ } + } +% \end{macrocode} +% \end{macro} +% +% \subsubsection{Prompt} +% +% \begin{macro}[int]{\@@_prompt:} +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_prompt: + { + \int_gdecr:N \g_@@_nonstop_int + \int_compare:nNnF \g_@@_nonstop_int > \c_zero + { + \group_begin: + \int_set_eq:NN \tex_escapechar:D \c_minus_one + \int_set_eq:NN \tex_endlinechar:D \c_minus_one + \tl_use:N \g_@@_prompt_before_tl + \tl_gclear:N \g_@@_prompt_before_tl + \@@_prompt_aux: + \group_end: + } + } +\cs_new_protected_nopar:Npn \@@_prompt_aux: + { + \ior_get_str:Nc \g_@@_prompt_ior { Your~input } + \exp_args:Nv \@@_prompt_treat:n { Your~input } + } +\cs_new_protected:Npn \@@_prompt_treat:n #1 + { + \tl_if_empty:nF {#1} + { + \exp_args:Nx \str_case:nnF { \tl_head:n {#1} } + { + { m } { \@@_print_meaning: \@@_prompt_aux: } + { q } + { + \int_gset_eq:NN \g_@@_noise_int \c_minus_one + \int_gzero:N \g_@@_nonstop_int + } + { x } + { + \group_end: + \exp_after:wN \@@_exit:w \@@_exit:w + } + { X } { \tex_batchmode:D \tex_end:D } + { s } { \@@_prompt_scan_int:nn {#1} + \@@_prompt_silent_steps:n } + { o } { \@@_prompt_scan_int:nn {#1} + { \int_gset:Nn \g_@@_noise_int } } + { C } + { + \tl_gset_rescan:Nnx \g_@@_tmpc_tl + { \ExplSyntaxOn } { \tl_tail:n {#1} } + \tl_gput_left:Nn \g_@@_tmpc_tl + { \tl_gclear:N \g_@@_tmpc_tl } + \group_insert_after:N \g_@@_tmpc_tl + } + } + { \@@_prompt_help: } + } + } +\cs_new_protected:Npn \@@_prompt_scan_int:nn #1 + { + \tex_afterassignment:D \@@_prompt_scan_int_after:wn + \l_@@_prompt_tmpa_int = 0 \use_none:n #1 \scan_stop: + } +\cs_new_protected:Npn \@@_prompt_scan_int_after:wn #1 \scan_stop: #2 + { + #2 \l_@@_prompt_tmpa_int + \tl_if_blank:nF {#1} { \@@_prompt_treat:n {#1} } + } +\cs_new_protected:Npn \@@_prompt_help: + { + \@@_print:n { "m":~meaning~of~first~token } + \@@_print:n { "q":~semi-quiet } + \@@_print:n { "x":~exit~this~instance~of~unravel } + \@@_print:n { "X":~try~harder~to~exit } + \@@_print:n { "s<num>":~do~<num>~steps~silently } + \@@_print:n + { "o<num>":~0~=>~only~log~not~online,~1~=>~both,~-1~=>~neither.} + \@@_print:n { "C<code>":~run~some~code~immediately } + \@@_prompt_aux: + } +\cs_new_protected:Npn \@@_prompt_silent_steps:n #1 + { + \int_gset_eq:NN \g_@@_noise_int \c_minus_one + \tl_gset:Nn \g_@@_prompt_before_tl + { \int_gset_eq:NN \g_@@_noise_int \c_one } + \int_gset:Nn \g_@@_nonstop_int {#1} + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Main command} +% +% \begin{macro}{\unravel} +% Simply call an underlying internal command. +% \begin{macrocode} +\cs_new_protected:Npn \unravel #1 { \@@_unravel:n {#1} } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}{\UnravelDebug} +% Turn on debugging mode. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \UnravelDebug + { + \bool_set_true:N \l_@@_debug_bool + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_unravel:n} +% Welcome the user, then initialize the input, output and step. Until +% the input is exhausted, print the current status and do one step. +% \begin{macrocode} +\cs_new_protected:Npn \@@_unravel:n #1 + { + \int_gzero:N \g_@@_step_int + \@@_input_gset:n {#1} + \seq_gclear:N \g_@@_prev_input_seq + \gtl_gclear:N \g_@@_output_gtl + \tl_gclear:N \g_@@_if_limit_tl + \int_gzero:N \g_@@_if_limit_int + \int_gzero:N \g_@@_if_depth_int + \gtl_gclear:N \g_@@_after_assignment_gtl + \bool_gset_true:N \g_@@_set_box_allowed_bool + \bool_gset_false:N \g_@@_name_in_progress_bool + \cs_gset_eq:NN \g_@@_prompt_ior \c_minus_one % ^^A todo:? + \@@_print_welcome: + \@@_main_loop: + \@@_exit_point: + \@@_print_outcome: + \bool_if:nTF + { + \tl_if_empty_p:N \g_@@_if_limit_tl + && \int_compare_p:nNn \g_@@_if_limit_int = \c_zero + && \int_compare_p:nNn \g_@@_if_depth_int = \c_zero + && \seq_if_empty_p:N \g_@@_prev_input_seq + } + { \@@_input_if_empty:TF { } { \@@_bad_finish: } } + { \@@_bad_finish: } + \@@_exit_point: + } +\cs_new_protected_nopar:Npn \@@_bad_finish: + { + \msg_error:nnx { unravel } { internal } + { the-last-unravel-finished-badly } + } +% \end{macrocode} +% \end{macro} +% +% \begin{macro}[int]{\@@_main_loop:} +% Loop forever, getting a token and performing the corresponding +% command. +% \begin{macrocode} +\cs_new_protected_nopar:Npn \@@_main_loop: + { + \@@_get_x_next: + \@@_set_cmd: + \@@_do_step: + \@@_main_loop: + } +% \end{macrocode} +% \end{macro} +% +% \subsection{Messages} +% +% \begin{macrocode} +\msg_new:nnn { unravel } { unknown-primitive } + { Internal~error:~the~primitive~'#1'~is~not~known. } +\msg_new:nnn { unravel } { extra-fi-or-else } + { Extra~fi,~or,~or~else. } +\msg_new:nnn { unravel } { missing-lbrace } + { Missing~left~brace~inserted. } +\msg_new:nnn { unravel } { missing-dollar } + { Missing~dollar~inserted. } +\msg_new:nnn { unravel } { unknown-expandable } + { Internal~error:~the~expandable~command~'#1'~is~not~known. } +\msg_new:nnn { unravel } { missing-font-id } + { Missing~font~identifier.~\iow_char:N\\nullfont~inserted. } +\msg_new:nnn { unravel } { missing-rparen } + { Missing~right~parenthesis~inserted~for~expression. } +\msg_new:nnn { unravel } { incompatible-units } + { Mu~glue/dimen~used~as~a~normal~glue/dimen~or~vice-versa. } +\msg_new:nnn { unravel } { missing-mudim } + { Missing~mu~unit. } +\msg_new:nnn { unravel } { missing-cs } + { Missing~control~sequence.~\iow_char:N\\inaccessible~inserted. } +\msg_new:nnn { unravel } { missing-box } + { Missing~box~inserted. } +\msg_new:nnn { unravel } { missing-to } + { Missing~keyword~'to'~inserted. } +\msg_new:nnn { unravel } { improper-leaders } + { Leaders~not~followed~by~proper~glue. } +\msg_new:nnn { unravel } { extra-close } + { Extra~right~brace~or~\iow_char:N\\endgroup. } +\msg_new:nnn { unravel } { off-save } + { Something~is~wrong~with~groups. } +\msg_new:nnn { unravel } { hrule-bad-mode } + { \iow_char\\hrule~used~in~wrong~mode. } +\msg_new:nnn { unravel } { invalid-mode } + { Invalid~mode~for~this~command. } +\msg_new:nnn { unravel } { color-stack-action-missing } + { Missing~color~stack~action. } +\msg_new:nnn { unravel } { action-type-missing } + { Missing~action~type. } +\msg_new:nnn { unravel } { identifier-type-missing } + { Missing~identifier~type. } +\msg_new:nnn { unravel } { destination-type-missing } + { Missing~destination~type. } +\msg_new:nnn { unravel } { erroneous-prefixes } + { Prefixes~appplied~to~non-assignment~command. } +\msg_new:nnn { unravel } { improper-setbox } + { \iow_char:N\\setbox~while~fetching~base~of~an~accent. } +\msg_new:nnn { unravel } { after-advance } + { + Missing~register~after~\iow_char:N\\advance,~ + \iow_char:N\\multiply,~or~\iow_char:N\\divide. + } +\msg_new:nnn { unravel } { bad-unless } + { \iow_char:N\\unless~not~followed~by~conditional. } +\msg_new:nnn { unravel } { missing-endcsname } + { Missing~\iow_char:N\\endcsname~inserted. } +\msg_new:nnn { unravel } { runaway-if } + { Runaway~\iow_char:N\\if... } +\msg_new:nnn { unravel } { extra-or } + { Extra~\iow_char:N\\or. } +\msg_new:nnn { unravel } { missing-equals } + { Missing~equals~for~\iow_char:N\\ifnum~or~\iow_char:N\\ifdim. } +\msg_new:nnn { unravel } { internal } + { Internal~error:~'#1'.~\ Please report. } +\msg_new:nnn { unravel } { not-implemented } + { The~following~feature~is~not~implemented:~'#1'. } +% \end{macrocode} +% +% \begin{macrocode} +%</package> +% \end{macrocode} +% +% \end{implementation} +% +% \endinput diff --git a/Master/texmf-dist/source/latex/unravel/unravel.ins b/Master/texmf-dist/source/latex/unravel/unravel.ins new file mode 100644 index 00000000000..81a35f7019f --- /dev/null +++ b/Master/texmf-dist/source/latex/unravel/unravel.ins @@ -0,0 +1,23 @@ +\input l3docstrip.tex +\askforoverwritefalse + +\preamble + +Do not distribute a modified version of this file. + +Communicate any suggestions for changing this package +to Bruno Le Floch (blflatex@gmail.com). + +\endpreamble +% stop docstrip adding \endinput +\postamble +\endpostamble + +\keepsilent + +% the package +\generate{% + \file{unravel.sty} {\from{unravel.dtx} {package}}% +} + +\endbatchfile diff --git a/Master/texmf-dist/tex/latex/unravel/unravel.sty b/Master/texmf-dist/tex/latex/unravel/unravel.sty new file mode 100644 index 00000000000..1665ce3acf4 --- /dev/null +++ b/Master/texmf-dist/tex/latex/unravel/unravel.sty @@ -0,0 +1,4817 @@ +%% +%% This is file `unravel.sty', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% unravel.dtx (with options: `package') +%% +%% Do not distribute a modified version of this file. +%% +%% Communicate any suggestions for changing this package +%% to Bruno Le Floch (blflatex@gmail.com). +%% +%% File: unravel.dtx Copyright (C) 2013 Bruno Le Floch +%% +%% It may be distributed and/or modified under the conditions of the +%% LaTeX Project Public License (LPPL), either version 1.3c of this +%% license or (at your option) any later version. The latest version +%% of this license is in the file +%% +%% http://www.latex-project.org/lppl.txt +%% +%% ----------------------------------------------------------------------- +\RequirePackage{expl3}[2013/07/01] +\RequirePackage{l3str}[2013/04/24] +\RequirePackage{gtl}[2013/07/28] +\ProvidesExplPackage + {unravel} {2013/07/28} {0.0a} {Watching TeX digest tokens} +\ior_new:N \g__unravel_prompt_ior +\tl_new:N \g__unravel_prompt_before_tl +\int_new:N \l__unravel_prompt_tmpa_int +\int_new:N \g__unravel_nonstop_int +\int_new:N \g__unravel_noise_int +\int_gset_eq:NN \g__unravel_noise_int \c_one +\bool_new:N \l__unravel_debug_bool +\int_new:N \g__unravel_step_int +\str_new:N \g__unravel_action_text_str +\int_new:N \g__unravel_max_action_int +\int_new:N \g__unravel_max_output_int +\int_new:N \g__unravel_max_prev_int +\int_new:N \g__unravel_max_input_int +\int_gset:Nn \g__unravel_max_action_int { 50 } +\int_gset:Nn \g__unravel_max_output_int { 300 } +\int_gset:Nn \g__unravel_max_prev_int { 300 } +\int_gset:Nn \g__unravel_max_input_int { 300 } +\bool_new:N \g__unravel_speedup_macros_bool +\bool_gset_true:N \g__unravel_speedup_macros_bool +\int_new:N \l__unravel_print_int +\int_new:N \g__unravel_input_int +\int_new:N \g__unravel_input_tmpa_int +\tl_new:N \l__unravel_input_tmpa_tl +\seq_new:N \g__unravel_prev_input_seq +\tl_new:N \l__unravel_prev_input_tl +\gtl_new:N \l__unravel_prev_input_gtl +\gtl_new:N \g__unravel_output_gtl +\gtl_new:N \l__unravel_head_gtl +\tl_new:N \l__unravel_head_tl +\token_new:Nn \l__unravel_head_token { ? } +\int_new:N \l__unravel_head_cmd_int +\int_new:N \l__unravel_head_char_int +\tl_new:N \l__unravel_head_meaning_tl +\tl_new:N \l__unravel_tmpa_tl +\gtl_new:N \l__unravel_tmpb_gtl +\tl_new:N \g__unravel_tmpc_tl +\seq_new:N \l__unravel_tmpa_seq +\tl_new:N \l__unravel_defined_tl +\tl_new:N \l__unravel_defining_tl +\cs_new_eq:NN \__unravel_inaccessible:w ? +\gtl_new:N \g__unravel_after_assignment_gtl +\bool_new:N \g__unravel_set_box_allowed_bool +\bool_new:N \g__unravel_name_in_progress_bool +\group_begin: + \char_set_lccode:nn { `* } { `# } + \tex_lowercase:D + { \tl_const:Nn \c__unravel_parameters_tl { ^*1*2*3*4*5*6*7*8*9 } } +\group_end: +\int_new:N \g__unravel_val_level_int +\tl_const:Nn \c__unravel_plus_tl { + } +\tl_const:Nn \c__unravel_minus_tl { - } +\tl_const:Nn \c__unravel_times_tl { * } +\tl_const:Nn \c__unravel_over_tl { / } +\tl_const:Nn \c__unravel_lq_tl { ` } +\tl_const:Nn \c__unravel_rq_tl { ' } +\tl_const:Nn \c__unravel_dq_tl { " } +\tl_const:Nn \c__unravel_lp_tl { ( } +\tl_const:Nn \c__unravel_rp_tl { ) } +\tl_const:Nn \c__unravel_eq_tl { = } +\tl_const:Nn \c__unravel_comma_tl { , } +\tl_const:Nn \c__unravel_point_tl { . } +\tl_new:N \g__unravel_if_limit_tl +\int_new:N \g__unravel_if_limit_int +\int_new:N \g__unravel_if_depth_int +\int_new:N \l__unravel_if_nesting_int +\seq_new:N \l__unravel_leaders_box_seq +\int_new:N \g__unravel_ends_int +\int_gset:Nn \g__unravel_ends_int { 3 } +\gtl_const:Nx \c__unravel_frozen_relax_gtl { \if_int_compare:w 0 = 0 \fi: } +\cs_if_exist:NF \exp_last_unbraced:NNn + { \cs_new_eq:NN \exp_last_unbraced:NNn \use:nnn } +\cs_generate_variant:Nn \exp_last_unbraced:NNn { NNv } +\cs_generate_variant:Nn \str_head:n { f } +\cs_generate_variant:Nn \tl_to_str:n { o } +\cs_generate_variant:Nn \tl_if_head_eq_meaning:nNT { V } +\cs_generate_variant:Nn \tl_if_head_is_space:nTF { o } +\cs_generate_variant:Nn \tl_if_head_is_space:nT { V } +\cs_generate_variant:Nn \tl_if_head_is_N_type:nTF { o } +\cs_generate_variant:Nn \tl_if_in:nnF { nV } +\cs_generate_variant:Nn \tl_if_in:nnTF { nV } +\cs_generate_variant:Nn \tl_if_eq:nnT { V } +\cs_generate_variant:Nn \tl_if_in:NnTF { No , NV } +\cs_generate_variant:Nn \tl_if_single_token:nT { V } +\cs_generate_variant:Nn \tl_gset_rescan:Nnn { Nnx } +\cs_generate_variant:Nn \gtl_gput_left:Nn { Nx , NV , No } +\cs_generate_variant:Nn \gtl_gput_right:Nn { Nx , NV } +\cs_generate_variant:Nn \gtl_put_right:Nn { NV } +\cs_generate_variant:Nn \ior_get_str:NN { Nc } +\cs_generate_variant:Nn \gtl_if_empty:NTF { c } +\cs_generate_variant:Nn \gtl_to_str:N { c } +\cs_generate_variant:Nn \gtl_gpop_left:NN { c } +\cs_generate_variant:Nn \gtl_get_left:NN { c } +\cs_generate_variant:Nn \gtl_gset:Nn { c } +\cs_generate_variant:Nn \gtl_gconcat:NNN { ccc , cNc } +\cs_generate_variant:Nn \gtl_gclear:N { c } +\cs_new_protected:Npn \__unravel_tl_gset_input:Nnn #1#2#3 + { + \group_begin: + \etex_everyeof:D \exp_after:wN { \token_to_str:N @ @ #1 } + #2 + \tl_gclear:N #1 + \str_if_eq_x:nnF + { \token_to_meaning:N \tex_input:D } + { \token_to_str:N \input } + { \msg_unravel:nnx { unravel } { internal } { input-prim } } + \exp_after:wN \__unravel_tl_gset_input_aux:wN + \exp_after:wN \prg_do_nothing: + \tex_input:D \tl_to_str:n {#3} \scan_stop: + \group_end: + \tl_gput_right:NV #1 \etex_everyeof:D + } +\cs_generate_variant:Nn \__unravel_tl_gset_input:Nnn { Nno } +\use:x + { + \cs_new_protected:Npn \exp_not:N \__unravel_tl_gset_input_aux:wN + ##1 \token_to_str:N @ @ ##2 + } { \tl_gset:No #2 {#1} } +\cs_new_eq:NN \__unravel_cs_case:NnF \tl_case:NnF +\cs_new_nopar:Npn \__unravel_strip_escape:w + { + \tex_romannumeral:D + \if_charcode:w \token_to_str:N \ \__unravel_strip_escape_aux:w \fi: + \__unravel_strip_escape_aux:N + } +\cs_new:Npn \__unravel_strip_escape_aux:N #1 { \c_zero } +\cs_new:Npn \__unravel_strip_escape_aux:w #1#2 + { - \__int_value:w #1 \c_zero } +\cs_new:Npn \__unravel_meaning_to_char:n #1 + { \__unravel_meaning_to_char_auxi:w #1 \q_mark ~ {} ~ \q_mark \q_stop } +\cs_new:Npn \__unravel_meaning_to_char_auxi:w #1 ~ #2 ~ #3 \q_mark #4 \q_stop + { \__unravel_meaning_to_char_auxii:w #3 ~ #3 ~ \q_stop } +\cs_new:Npn \__unravel_meaning_to_char_auxii:w #1 ~ #2 ~ #3 \q_stop + { \tl_if_empty:nTF {#2} { ~ } {#2} } +\cs_generate_variant:Nn \__unravel_meaning_to_char:n { o } +\cs_new:Npn \__unravel_token_to_char:N #1 + { \__unravel_meaning_to_char:o { \token_to_meaning:N #1 } } +\cs_new:Npn \__unravel_to_str:n #1 + { + \tl_if_head_eq_meaning:nNTF {#1} \scan_stop: + { \__unravel_to_str_auxi:w #1 ? \q_stop } + { \tl_to_str:n } + {#1} + } +\cs_set:Npn \__unravel_tmp:w #1 + { + \cs_new:Npn \__unravel_to_str_auxi:w ##1##2 \q_stop + { + \exp_after:wN \__unravel_to_str_auxii:w \token_to_str:N ##1 \q_mark + #1 tl \q_mark \q_stop + } + \cs_new:Npn \__unravel_to_str_auxii:w ##1 #1 ##2 \q_mark ##3 \q_stop + { \cs_if_exist_use:cF { ##2 _to_str:n } { \tl_to_str:n } } + } +\exp_args:No \__unravel_tmp:w { \tl_to_str:n { s__ } } +\cs_new_protected:Npn \__unravel_prev_input_silent:n #1 + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_prev_input_tl + \tl_put_right:Nn \l__unravel_prev_input_tl {#1} + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_prev_input_tl + } +\cs_generate_variant:Nn \__unravel_prev_input_silent:n { V , x } +\cs_new_protected:Npn \__unravel_prev_input:n #1 + { + \__unravel_prev_input_silent:n {#1} + \__unravel_print_action:x { \tl_to_str:n {#1} } + } +\cs_generate_variant:Nn \__unravel_prev_input:n { V , x } +\cs_new_protected:Npn \__unravel_prev_input_gtl:N #1 + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_prev_input_gtl + \gtl_concat:NNN \l__unravel_prev_input_gtl \l__unravel_prev_input_gtl #1 + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_prev_input_gtl + } +\prg_new_conditional:Npnn \__unravel_token_if_expandable:N #1 + { p , T , F , TF } + { + \exp_after:wN \if_meaning:w \exp_not:N #1 #1 + \prg_return_false: + \else: + \prg_return_true: + \fi: + } +\prg_new_conditional:Npnn \__unravel_token_if_protected:N #1 + { p , T , F , TF } + { + \__unravel_token_if_expandable:NTF #1 + { + \token_if_protected_macro:NTF #1 + { \prg_return_true: } + { + \token_if_protected_long_macro:NTF #1 + { \prg_return_true: } + { \prg_return_false: } + } + } + { \prg_return_true: } + } +\cs_new_eq:NN \__unravel_exit_point: \prg_do_nothing: +\cs_new:Npn \__unravel_exit:w #1 \__unravel_exit_point: { } +\cs_new_eq:NN \__unravel_break_point: \prg_do_nothing: +\cs_new:Npn \__unravel_break:w #1 \__unravel_break_point: { } +\group_begin: + \char_set_catcode_active:n { `Z } + \prg_new_protected_conditional:Npnn \__unravel_token_if_definable:N #1 + { TF } + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \exp_args:No \tl_if_single:nTF { \token_to_str:N #1 } + { + \exp_args:Nx \char_set_lccode:nn + { ` \str_head:n {#1} } { `Z } + \tex_lowercase:D { \tl_if_eq:nnTF {#1} } { Z } + { \group_end: \prg_return_true: } + { \group_end: \prg_return_false: } + } + { \group_end: \prg_return_true: } + } +\group_end: +\prg_new_protected_conditional:Npnn \__unravel_gtl_if_head_is_definable:N #1 + { TF , F } + { + \gtl_if_single_token:NTF #1 + { + \gtl_if_head_is_N_type:NTF #1 + { + \exp_last_unbraced:Nx \__unravel_token_if_definable:NTF + { \gtl_head:N #1 } + { \prg_return_true: } + { \prg_return_false: } + } + { \prg_return_false: } + } + { \prg_return_false: } + } +\cs_new_protected:Npn \__unravel_tex_const:nn #1#2 + { \int_const:cn { c__unravel_tex_#1_int } {#2} } +\cs_new:Npn \__unravel_tex_use:n #1 { \int_use:c { c__unravel_tex_#1_int } } +\cs_new_protected:Npn \__unravel_tex_primitive:nnn #1#2#3 + { + \tl_const:cx { c__unravel_tex_#1_tl } + { { \__unravel_tex_use:n {#2} } {#3} } + } +\cs_new_protected:Npn \__unravel_new_tex_cmd:nn #1#2 + { + \cs_new_protected_nopar:cpn + { __unravel_cmd_ \__unravel_tex_use:n {#1} : } {#2} + } +\cs_new_protected:Npn \__unravel_new_eq_tex_cmd:nn #1#2 + { + \cs_new_eq:cc + { __unravel_cmd_ \__unravel_tex_use:n {#1} : } + { __unravel_cmd_ \__unravel_tex_use:n {#2} : } + } +\cs_new_protected:Npn \__unravel_new_tex_expandable:nn #1#2 + { + \cs_new_protected_nopar:cpn + { __unravel_expandable_ \__unravel_tex_use:n {#1} : } {#2} + } +\__unravel_tex_const:nn { relax } { 0 } +\__unravel_tex_const:nn { begin-group_char } { 1 } +\__unravel_tex_const:nn { end-group_char } { 2 } +\__unravel_tex_const:nn { math_char } { 3 } +\__unravel_tex_const:nn { tab_mark } { 4 } +\__unravel_tex_const:nn { alignment_char } { 4 } +\__unravel_tex_const:nn { car_ret } { 5 } +\__unravel_tex_const:nn { macro_char } { 6 } +\__unravel_tex_const:nn { superscript_char } { 7 } +\__unravel_tex_const:nn { subscript_char } { 8 } +\__unravel_tex_const:nn { endv } { 9 } +\__unravel_tex_const:nn { blank_char } { 10 } +\__unravel_tex_const:nn { the_char } { 11 } +\__unravel_tex_const:nn { other_char } { 12 } +\__unravel_tex_const:nn { par_end } { 13 } +\__unravel_tex_const:nn { stop } { 14 } +\__unravel_tex_const:nn { delim_num } { 15 } +\__unravel_tex_const:nn { max_char_code } { 15 } +\__unravel_tex_const:nn { char_num } { 16 } +\__unravel_tex_const:nn { math_char_num } { 17 } +\__unravel_tex_const:nn { mark } { 18 } +\__unravel_tex_const:nn { xray } { 19 } +\__unravel_tex_const:nn { make_box } { 20 } +\__unravel_tex_const:nn { hmove } { 21 } +\__unravel_tex_const:nn { vmove } { 22 } +\__unravel_tex_const:nn { un_hbox } { 23 } +\__unravel_tex_const:nn { un_vbox } { 24 } +\__unravel_tex_const:nn { remove_item } { 25 } +\__unravel_tex_const:nn { hskip } { 26 } +\__unravel_tex_const:nn { vskip } { 27 } +\__unravel_tex_const:nn { mskip } { 28 } +\__unravel_tex_const:nn { kern } { 29 } +\__unravel_tex_const:nn { mkern } { 30 } +\__unravel_tex_const:nn { leader_ship } { 31 } +\__unravel_tex_const:nn { halign } { 32 } +\__unravel_tex_const:nn { valign } { 33 } +\__unravel_tex_const:nn { no_align } { 34 } +\__unravel_tex_const:nn { vrule } { 35 } +\__unravel_tex_const:nn { hrule } { 36 } +\__unravel_tex_const:nn { insert } { 37 } +\__unravel_tex_const:nn { vadjust } { 38 } +\__unravel_tex_const:nn { ignore_spaces } { 39 } +\__unravel_tex_const:nn { after_assignment } { 40 } +\__unravel_tex_const:nn { after_group } { 41 } +\__unravel_tex_const:nn { break_penalty } { 42 } +\__unravel_tex_const:nn { start_par } { 43 } +\__unravel_tex_const:nn { ital_corr } { 44 } +\__unravel_tex_const:nn { accent } { 45 } +\__unravel_tex_const:nn { math_accent } { 46 } +\__unravel_tex_const:nn { discretionary } { 47 } +\__unravel_tex_const:nn { eq_no } { 48 } +\__unravel_tex_const:nn { left_right } { 49 } +\__unravel_tex_const:nn { math_comp } { 50 } +\__unravel_tex_const:nn { limit_switch } { 51 } +\__unravel_tex_const:nn { above } { 52 } +\__unravel_tex_const:nn { math_style } { 53 } +\__unravel_tex_const:nn { math_choice } { 54 } +\__unravel_tex_const:nn { non_script } { 55 } +\__unravel_tex_const:nn { vcenter } { 56 } +\__unravel_tex_const:nn { case_shift } { 57 } +\__unravel_tex_const:nn { message } { 58 } +\__unravel_tex_const:nn { extension } { 59 } +\__unravel_tex_const:nn { in_stream } { 60 } +\__unravel_tex_const:nn { begin_group } { 61 } +\__unravel_tex_const:nn { end_group } { 62 } +\__unravel_tex_const:nn { omit } { 63 } +\__unravel_tex_const:nn { ex_space } { 64 } +\__unravel_tex_const:nn { no_boundary } { 65 } +\__unravel_tex_const:nn { radical } { 66 } +\__unravel_tex_const:nn { end_cs_name } { 67 } +\__unravel_tex_const:nn { min_internal } { 68 } +\__unravel_tex_const:nn { char_given } { 68 } +\__unravel_tex_const:nn { math_given } { 69 } +\__unravel_tex_const:nn { last_item } { 70 } +\__unravel_tex_const:nn { max_non_prefixed_command } { 70 } +\__unravel_tex_const:nn { toks_register } { 71 } +\__unravel_tex_const:nn { assign_toks } { 72 } +\__unravel_tex_const:nn { assign_int } { 73 } +\__unravel_tex_const:nn { assign_dimen } { 74 } +\__unravel_tex_const:nn { assign_glue } { 75 } +\__unravel_tex_const:nn { assign_mu_glue } { 76 } +\__unravel_tex_const:nn { assign_font_dimen } { 77 } +\__unravel_tex_const:nn { assign_font_int } { 78 } +\__unravel_tex_const:nn { set_aux } { 79 } +\__unravel_tex_const:nn { set_prev_graf } { 80 } +\__unravel_tex_const:nn { set_page_dimen } { 81 } +\__unravel_tex_const:nn { set_page_int } { 82 } +\__unravel_tex_const:nn { set_box_dimen } { 83 } +\__unravel_tex_const:nn { set_shape } { 84 } +\__unravel_tex_const:nn { def_code } { 85 } +\__unravel_tex_const:nn { def_family } { 86 } +\__unravel_tex_const:nn { set_font } { 87 } +\__unravel_tex_const:nn { def_font } { 88 } +\__unravel_tex_const:nn { register } { 89 } +\__unravel_tex_const:nn { max_internal } { 89 } +\__unravel_tex_const:nn { advance } { 90 } +\__unravel_tex_const:nn { multiply } { 91 } +\__unravel_tex_const:nn { divide } { 92 } +\__unravel_tex_const:nn { prefix } { 93 } +\__unravel_tex_const:nn { let } { 94 } +\__unravel_tex_const:nn { shorthand_def } { 95 } +\__unravel_tex_const:nn { read_to_cs } { 96 } +\__unravel_tex_const:nn { def } { 97 } +\__unravel_tex_const:nn { set_box } { 98 } +\__unravel_tex_const:nn { hyph_data } { 99 } +\__unravel_tex_const:nn { set_interaction } { 100 } +\__unravel_tex_const:nn { letterspace_font } { 101 } +\__unravel_tex_const:nn { pdf_copy_font } { 102 } +\__unravel_tex_const:nn { max_command } { 102 } +\__unravel_tex_const:nn { undefined_cs } { 103 } +\__unravel_tex_const:nn { expand_after } { 104 } 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} { hskip } { 3 } +\__unravel_tex_primitive:nnn { hskip } { hskip } { 4 } +\__unravel_tex_primitive:nnn { vfil } { vskip } { 0 } +\__unravel_tex_primitive:nnn { vfill } { vskip } { 1 } +\__unravel_tex_primitive:nnn { vss } { vskip } { 2 } +\__unravel_tex_primitive:nnn { vfilneg } { vskip } { 3 } +\__unravel_tex_primitive:nnn { vskip } { vskip } { 4 } +\__unravel_tex_primitive:nnn { mskip } { mskip } { 5 } +\__unravel_tex_primitive:nnn { kern } { kern } { 1 } +\__unravel_tex_primitive:nnn { mkern } { mkern } { 99 } +\__unravel_tex_primitive:nnn { shipout } { leader_ship } { 99 } +\__unravel_tex_primitive:nnn { leaders } { leader_ship } { 100 } +\__unravel_tex_primitive:nnn { cleaders } { leader_ship } { 101 } +\__unravel_tex_primitive:nnn { xleaders } { leader_ship } { 102 } +\__unravel_tex_primitive:nnn { halign } { halign } { 0 } +\__unravel_tex_primitive:nnn { valign } { valign } { 0 } +\__unravel_tex_primitive:nnn { beginL } { valign } { 4 } +\__unravel_tex_primitive:nnn { endL } { valign } { 5 } +\__unravel_tex_primitive:nnn { beginR } { valign } { 8 } +\__unravel_tex_primitive:nnn { endR } { valign } { 9 } +\__unravel_tex_primitive:nnn { noalign } { no_align } { 0 } +\__unravel_tex_primitive:nnn { vrule } { vrule } { 0 } +\__unravel_tex_primitive:nnn { hrule } { hrule } { 0 } +\__unravel_tex_primitive:nnn { insert } { insert } { 0 } +\__unravel_tex_primitive:nnn { vadjust } { vadjust } { 0 } +\__unravel_tex_primitive:nnn { ignorespaces } { ignore_spaces } { 0 } +\__unravel_tex_primitive:nnn { afterassignment } { after_assignment } { 0 } +\__unravel_tex_primitive:nnn { aftergroup } { after_group } { 0 } +\__unravel_tex_primitive:nnn { penalty } { break_penalty } { 0 } +\__unravel_tex_primitive:nnn { indent } { start_par } { 1 } +\__unravel_tex_primitive:nnn { noindent } { start_par } { 0 } +\__unravel_tex_primitive:nnn { quitvmode } { start_par } { 2 } +\__unravel_tex_primitive:nnn { / } { ital_corr } { 0 } +\__unravel_tex_primitive:nnn { accent } { accent } { 0 } +\__unravel_tex_primitive:nnn { mathaccent } { math_accent } { 0 } +\__unravel_tex_primitive:nnn { - } { discretionary } { 1 } +\__unravel_tex_primitive:nnn { discretionary } { discretionary } { 0 } +\__unravel_tex_primitive:nnn { eqno } { eq_no } { 0 } +\__unravel_tex_primitive:nnn { leqno } { eq_no } { 1 } +\__unravel_tex_primitive:nnn { left } { left_right } { 30 } +\__unravel_tex_primitive:nnn { right } { left_right } { 31 } +\__unravel_tex_primitive:nnn { middle } { left_right } { 17 } +\__unravel_tex_primitive:nnn { mathord } { math_comp } { 16 } +\__unravel_tex_primitive:nnn { mathop } { math_comp } { 17 } +\__unravel_tex_primitive:nnn { mathbin } { math_comp } { 18 } +\__unravel_tex_primitive:nnn { mathrel } { math_comp } { 19 } +\__unravel_tex_primitive:nnn { mathopen } { math_comp } { 20 } +\__unravel_tex_primitive:nnn { mathclose } { math_comp } { 21 } +\__unravel_tex_primitive:nnn { mathpunct } { math_comp } { 22 } +\__unravel_tex_primitive:nnn { mathinner } { math_comp } { 23 } +\__unravel_tex_primitive:nnn { underline } { math_comp } { 26 } +\__unravel_tex_primitive:nnn { overline } { math_comp } { 27 } +\__unravel_tex_primitive:nnn { displaylimits } { limit_switch } { 0 } +\__unravel_tex_primitive:nnn { limits } { limit_switch } { 1 } +\__unravel_tex_primitive:nnn { nolimits } { limit_switch } { 2 } +\__unravel_tex_primitive:nnn { above } { above } { 0 } +\__unravel_tex_primitive:nnn { over } { above } { 1 } +\__unravel_tex_primitive:nnn { atop } { above } { 2 } +\__unravel_tex_primitive:nnn { abovewithdelims } { above } { 3 } +\__unravel_tex_primitive:nnn { overwithdelims } { above } { 4 } +\__unravel_tex_primitive:nnn { atopwithdelims } { above } { 5 } +\__unravel_tex_primitive:nnn { displaystyle } { math_style } { 0 } +\__unravel_tex_primitive:nnn { textstyle } { math_style } { 2 } +\__unravel_tex_primitive:nnn { scriptstyle } { math_style } { 4 } +\__unravel_tex_primitive:nnn { scriptscriptstyle } { math_style } { 6 } 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extension } { 8 } +\__unravel_tex_primitive:nnn { pdfxform } { extension } { 9 } +\__unravel_tex_primitive:nnn { pdfrefxform } { extension } { 10 } +\__unravel_tex_primitive:nnn { pdfximage } { extension } { 11 } +\__unravel_tex_primitive:nnn { pdfrefximage } { extension } { 12 } +\__unravel_tex_primitive:nnn { pdfannot } { extension } { 13 } +\__unravel_tex_primitive:nnn { pdfstartlink } { extension } { 14 } +\__unravel_tex_primitive:nnn { pdfendlink } { extension } { 15 } +\__unravel_tex_primitive:nnn { pdfoutline } { extension } { 16 } +\__unravel_tex_primitive:nnn { pdfdest } { extension } { 17 } +\__unravel_tex_primitive:nnn { pdfthread } { extension } { 18 } +\__unravel_tex_primitive:nnn { pdfstartthread } { extension } { 19 } +\__unravel_tex_primitive:nnn { pdfendthread } { extension } { 20 } +\__unravel_tex_primitive:nnn { pdfsavepos } { extension } { 21 } +\__unravel_tex_primitive:nnn { pdfinfo } { extension } { 22 } +\__unravel_tex_primitive:nnn { pdfcatalog } { extension } { 23 } +\__unravel_tex_primitive:nnn { pdfnames } { extension } { 24 } +\__unravel_tex_primitive:nnn { pdffontattr } { extension } { 25 } +\__unravel_tex_primitive:nnn { pdfincludechars } { extension } { 26 } +\__unravel_tex_primitive:nnn { pdfmapfile } { extension } { 27 } +\__unravel_tex_primitive:nnn { pdfmapline } { extension } { 28 } +\__unravel_tex_primitive:nnn { pdftrailer } { extension } { 29 } +\__unravel_tex_primitive:nnn { pdfresettimer } { extension } { 30 } +\__unravel_tex_primitive:nnn { pdffontexpand } { extension } { 31 } +\__unravel_tex_primitive:nnn { pdfsetrandomseed } { extension } { 32 } +\__unravel_tex_primitive:nnn { pdfsnaprefpoint } { extension } { 33 } +\__unravel_tex_primitive:nnn { pdfsnapy } { extension } { 34 } +\__unravel_tex_primitive:nnn { pdfsnapycomp } { extension } { 35 } +\__unravel_tex_primitive:nnn { pdfglyphtounicode } { extension } { 36 } +\__unravel_tex_primitive:nnn { pdfcolorstack } { extension } { 37 } +\__unravel_tex_primitive:nnn { pdfsetmatrix } { extension } { 38 } +\__unravel_tex_primitive:nnn { pdfsave } { extension } { 39 } +\__unravel_tex_primitive:nnn { pdfrestore } { extension } { 40 } +\__unravel_tex_primitive:nnn { pdfnobuiltintounicode } { extension } { 41 } +\__unravel_tex_primitive:nnn { openin } { in_stream } { 1 } +\__unravel_tex_primitive:nnn { closein } { in_stream } { 0 } +\__unravel_tex_primitive:nnn { begingroup } { begin_group } { 0 } +\__unravel_tex_primitive:nnn { endgroup } { end_group } { 0 } +\__unravel_tex_primitive:nnn { omit } { omit } { 0 } +\__unravel_tex_primitive:nnn { ~ } { ex_space } { 0 } +\__unravel_tex_primitive:nnn { noboundary } { no_boundary } { 0 } +\__unravel_tex_primitive:nnn { radical } { radical } { 0 } +\__unravel_tex_primitive:nnn { endcsname } { end_cs_name } { 0 } +\__unravel_tex_primitive:nnn { lastpenalty } { last_item } { 0 } +\__unravel_tex_primitive:nnn { lastkern } { last_item } { 1 } +\__unravel_tex_primitive:nnn { lastskip } { last_item } { 2 } 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} { last_item } { 17 } +\__unravel_tex_primitive:nnn { pdfrandomseed } { last_item } { 18 } +\__unravel_tex_primitive:nnn { pdflastlink } { last_item } { 19 } +\__unravel_tex_primitive:nnn { eTeXversion } { last_item } { 20 } +\__unravel_tex_primitive:nnn { currentgrouplevel } { last_item } { 21 } +\__unravel_tex_primitive:nnn { currentgrouptype } { last_item } { 22 } +\__unravel_tex_primitive:nnn { currentiflevel } { last_item } { 23 } +\__unravel_tex_primitive:nnn { currentiftype } { last_item } { 24 } +\__unravel_tex_primitive:nnn { currentifbranch } { last_item } { 25 } +\__unravel_tex_primitive:nnn { gluestretchorder } { last_item } { 26 } +\__unravel_tex_primitive:nnn { glueshrinkorder } { last_item } { 27 } +\__unravel_tex_primitive:nnn { fontcharwd } { last_item } { 28 } +\__unravel_tex_primitive:nnn { fontcharht } { last_item } { 29 } +\__unravel_tex_primitive:nnn { fontchardp } { last_item } { 30 } +\__unravel_tex_primitive:nnn { fontcharic } { last_item } { 31 } 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+\__unravel_tex_primitive:nnn { everydisplay } { assign_toks } { 4 } +\__unravel_tex_primitive:nnn { everyhbox } { assign_toks } { 5 } +\__unravel_tex_primitive:nnn { everyvbox } { assign_toks } { 6 } +\__unravel_tex_primitive:nnn { everyjob } { assign_toks } { 7 } +\__unravel_tex_primitive:nnn { everycr } { assign_toks } { 8 } +\__unravel_tex_primitive:nnn { errhelp } { assign_toks } { 9 } +\__unravel_tex_primitive:nnn { pdfpagesattr } { assign_toks } { 10 } +\__unravel_tex_primitive:nnn { pdfpageattr } { assign_toks } { 11 } +\__unravel_tex_primitive:nnn { pdfpageresources } { assign_toks } { 12 } +\__unravel_tex_primitive:nnn { pdfpkmode } { assign_toks } { 13 } +\__unravel_tex_primitive:nnn { everyeof } { assign_toks } { 14 } +\__unravel_tex_primitive:nnn { pretolerance } { assign_int } { 0 } +\__unravel_tex_primitive:nnn { tolerance } { assign_int } { 1 } +\__unravel_tex_primitive:nnn { linepenalty } { assign_int } { 2 } +\__unravel_tex_primitive:nnn { hyphenpenalty } { assign_int } { 3 } +\__unravel_tex_primitive:nnn { exhyphenpenalty } { assign_int } { 4 } +\__unravel_tex_primitive:nnn { clubpenalty } { assign_int } { 5 } +\__unravel_tex_primitive:nnn { widowpenalty } { assign_int } { 6 } +\__unravel_tex_primitive:nnn { displaywidowpenalty } { assign_int } { 7 } +\__unravel_tex_primitive:nnn { brokenpenalty } { assign_int } { 8 } +\__unravel_tex_primitive:nnn { binoppenalty } { assign_int } { 9 } +\__unravel_tex_primitive:nnn { relpenalty } { assign_int } { 10 } +\__unravel_tex_primitive:nnn { predisplaypenalty } { assign_int } { 11 } +\__unravel_tex_primitive:nnn { postdisplaypenalty } { assign_int } { 12 } +\__unravel_tex_primitive:nnn { interlinepenalty } { assign_int } { 13 } +\__unravel_tex_primitive:nnn { doublehyphendemerits } { assign_int } { 14 } +\__unravel_tex_primitive:nnn { finalhyphendemerits } { assign_int } { 15 } +\__unravel_tex_primitive:nnn { adjdemerits } { assign_int } { 16 } +\__unravel_tex_primitive:nnn { mag } { assign_int } { 17 } +\__unravel_tex_primitive:nnn { delimiterfactor } { assign_int } { 18 } +\__unravel_tex_primitive:nnn { looseness } { assign_int } { 19 } +\__unravel_tex_primitive:nnn { time } { assign_int } { 20 } +\__unravel_tex_primitive:nnn { day } { assign_int } { 21 } +\__unravel_tex_primitive:nnn { month } { assign_int } { 22 } +\__unravel_tex_primitive:nnn { year } { assign_int } { 23 } +\__unravel_tex_primitive:nnn { showboxbreadth } { assign_int } { 24 } +\__unravel_tex_primitive:nnn { showboxdepth } { assign_int } { 25 } +\__unravel_tex_primitive:nnn { hbadness } { assign_int } { 26 } +\__unravel_tex_primitive:nnn { vbadness } { assign_int } { 27 } +\__unravel_tex_primitive:nnn { pausing } { assign_int } { 28 } +\__unravel_tex_primitive:nnn { tracingonline } { assign_int } { 29 } +\__unravel_tex_primitive:nnn { tracingmacros } { assign_int } { 30 } +\__unravel_tex_primitive:nnn { tracingstats } { assign_int } { 31 } +\__unravel_tex_primitive:nnn { tracingparagraphs } { assign_int } { 32 } +\__unravel_tex_primitive:nnn { tracingpages } { assign_int } { 33 } +\__unravel_tex_primitive:nnn { tracingoutput } { assign_int } { 34 } +\__unravel_tex_primitive:nnn { tracinglostchars } { assign_int } { 35 } +\__unravel_tex_primitive:nnn { tracingcommands } { assign_int } { 36 } +\__unravel_tex_primitive:nnn { tracingrestores } { assign_int } { 37 } +\__unravel_tex_primitive:nnn { uchyph } { assign_int } { 38 } +\__unravel_tex_primitive:nnn { outputpenalty } { assign_int } { 39 } +\__unravel_tex_primitive:nnn { maxdeadcycles } { assign_int } { 40 } +\__unravel_tex_primitive:nnn { hangafter } { assign_int } { 41 } +\__unravel_tex_primitive:nnn { floatingpenalty } { assign_int } { 42 } +\__unravel_tex_primitive:nnn { globaldefs } { assign_int } { 43 } +\__unravel_tex_primitive:nnn { fam } { assign_int } { 44 } +\__unravel_tex_primitive:nnn { escapechar } { assign_int } { 45 } +\__unravel_tex_primitive:nnn { defaulthyphenchar } { assign_int } { 46 } +\__unravel_tex_primitive:nnn { defaultskewchar } { assign_int } { 47 } +\__unravel_tex_primitive:nnn { endlinechar } { assign_int } { 48 } +\__unravel_tex_primitive:nnn { newlinechar } { assign_int } { 49 } +\__unravel_tex_primitive:nnn { language } { assign_int } { 50 } +\__unravel_tex_primitive:nnn { lefthyphenmin } { assign_int } { 51 } +\__unravel_tex_primitive:nnn { righthyphenmin } { assign_int } { 52 } +\__unravel_tex_primitive:nnn { holdinginserts } { assign_int } { 53 } +\__unravel_tex_primitive:nnn { errorcontegtlines } { assign_int } { 54 } +\__unravel_tex_primitive:nnn { pdfoutput } { assign_int } { 55 } +\__unravel_tex_primitive:nnn { pdfcompresslevel } { assign_int } { 56 } +\__unravel_tex_primitive:nnn { pdfdecimaldigits } { assign_int } { 57 } +\__unravel_tex_primitive:nnn { pdfmovechars } { assign_int } { 58 } +\__unravel_tex_primitive:nnn { pdfimageresolution } { assign_int } { 59 } +\__unravel_tex_primitive:nnn { pdfpkresolution } { assign_int } { 60 } +\__unravel_tex_primitive:nnn { pdfuniqueresname } { assign_int } { 61 } +\__unravel_tex_primitive:nnn + { pdfoptionalwaysusepdfpagebox } { assign_int } { 62 } +\__unravel_tex_primitive:nnn + { pdfoptionpdfinclusionerrorlevel } { assign_int } { 63 } +\__unravel_tex_primitive:nnn + { pdfoptionpdfminorversion } { assign_int } { 64 } +\__unravel_tex_primitive:nnn { pdfminorversion } { assign_int } { 64 } +\__unravel_tex_primitive:nnn { pdfforcepagebox } { assign_int } { 65 } +\__unravel_tex_primitive:nnn { pdfpagebox } { assign_int } { 66 } +\__unravel_tex_primitive:nnn + { pdfinclusionerrorlevel } { assign_int } { 67 } +\__unravel_tex_primitive:nnn { pdfgamma } { assign_int } { 68 } +\__unravel_tex_primitive:nnn { pdfimagegamma } { assign_int } { 69 } +\__unravel_tex_primitive:nnn { pdfimagehicolor } { assign_int } { 70 } +\__unravel_tex_primitive:nnn { pdfimageapplygamma } { assign_int } { 71 } +\__unravel_tex_primitive:nnn { pdfadjustspacing } { assign_int } { 72 } +\__unravel_tex_primitive:nnn { pdfprotrudechars } { assign_int } { 73 } +\__unravel_tex_primitive:nnn { pdftracingfonts } { assign_int } { 74 } +\__unravel_tex_primitive:nnn { pdfobjcompresslevel } { assign_int } { 75 } +\__unravel_tex_primitive:nnn + { pdfadjustinterwordglue } { assign_int } { 76 } +\__unravel_tex_primitive:nnn { pdfprependkern } { assign_int } { 77 } +\__unravel_tex_primitive:nnn { pdfappendkern } { assign_int } { 78 } +\__unravel_tex_primitive:nnn { pdfgentounicode } { assign_int } { 79 } +\__unravel_tex_primitive:nnn { pdfdraftmode } { assign_int } { 80 } +\__unravel_tex_primitive:nnn { pdfinclusioncopyfonts } { assign_int } { 81 } +\__unravel_tex_primitive:nnn { tracingassigns } { assign_int } { 82 } +\__unravel_tex_primitive:nnn { tracinggroups } { assign_int } { 83 } +\__unravel_tex_primitive:nnn { tracingifs } { assign_int } { 84 } +\__unravel_tex_primitive:nnn { tracingscantokens } { assign_int } { 85 } +\__unravel_tex_primitive:nnn { tracingnesting } { assign_int } { 86 } +\__unravel_tex_primitive:nnn { predisplaydirection } { assign_int } { 87 } +\__unravel_tex_primitive:nnn { lastlinefit } { assign_int } { 88 } +\__unravel_tex_primitive:nnn { savingvdiscards } { assign_int } { 89 } +\__unravel_tex_primitive:nnn { savinghyphcodes } { assign_int } { 90 } +\__unravel_tex_primitive:nnn { TeXXeTstate } { assign_int } { 91 } +\__unravel_tex_primitive:nnn { parindent } { assign_dimen } { 0 } +\__unravel_tex_primitive:nnn { mathsurround } { assign_dimen } { 1 } +\__unravel_tex_primitive:nnn { lineskiplimit } { assign_dimen } { 2 } +\__unravel_tex_primitive:nnn { hsize } { assign_dimen } { 3 } +\__unravel_tex_primitive:nnn { vsize } { assign_dimen } { 4 } +\__unravel_tex_primitive:nnn { maxdepth } { assign_dimen } { 5 } +\__unravel_tex_primitive:nnn { splitmaxdepth } { assign_dimen } { 6 } +\__unravel_tex_primitive:nnn { boxmaxdepth } { assign_dimen } { 7 } +\__unravel_tex_primitive:nnn { hfuzz } { assign_dimen } { 8 } +\__unravel_tex_primitive:nnn { vfuzz } { assign_dimen } { 9 } +\__unravel_tex_primitive:nnn { delimitershortfall } { assign_dimen } { 10 } +\__unravel_tex_primitive:nnn { nulldelimiterspace } { assign_dimen } { 11 } +\__unravel_tex_primitive:nnn { scriptspace } { assign_dimen } { 12 } +\__unravel_tex_primitive:nnn { predisplaysize } { assign_dimen } { 13 } +\__unravel_tex_primitive:nnn { displaywidth } { assign_dimen } { 14 } +\__unravel_tex_primitive:nnn { displayindent } { assign_dimen } { 15 } +\__unravel_tex_primitive:nnn { overfullrule } { assign_dimen } { 16 } +\__unravel_tex_primitive:nnn { hangindent } { assign_dimen } { 17 } +\__unravel_tex_primitive:nnn { hoffset } { assign_dimen } { 18 } +\__unravel_tex_primitive:nnn { voffset } { assign_dimen } { 19 } +\__unravel_tex_primitive:nnn { emergencystretch } { assign_dimen } { 20 } +\__unravel_tex_primitive:nnn { pdfhorigin } { assign_dimen } { 21 } +\__unravel_tex_primitive:nnn { pdfvorigin } { assign_dimen } { 22 } +\__unravel_tex_primitive:nnn { pdfpagewidth } { assign_dimen } { 23 } +\__unravel_tex_primitive:nnn { pdfpageheight } { assign_dimen } { 24 } +\__unravel_tex_primitive:nnn { pdflinkmargin } { assign_dimen } { 25 } +\__unravel_tex_primitive:nnn { pdfdestmargin } { assign_dimen } { 26 } +\__unravel_tex_primitive:nnn { pdfthreadmargin } { assign_dimen } { 27 } +\__unravel_tex_primitive:nnn { pdffirstlineheight } { assign_dimen } { 28 } +\__unravel_tex_primitive:nnn { pdflastlinedepth } { assign_dimen } { 29 } +\__unravel_tex_primitive:nnn { pdfeachlineheight } { assign_dimen } { 30 } +\__unravel_tex_primitive:nnn { pdfeachlinedepth } { assign_dimen } { 31 } +\__unravel_tex_primitive:nnn { pdfignoreddimen } { assign_dimen } { 32 } +\__unravel_tex_primitive:nnn { pdfpxdimen } { assign_dimen } { 33 } +\__unravel_tex_primitive:nnn { lineskip } { assign_glue } { 0 } +\__unravel_tex_primitive:nnn { baselineskip } { assign_glue } { 1 } +\__unravel_tex_primitive:nnn { parskip } { assign_glue } { 2 } +\__unravel_tex_primitive:nnn { abovedisplayskip } { assign_glue } { 3 } +\__unravel_tex_primitive:nnn { belowdisplayskip } { assign_glue } { 4 } +\__unravel_tex_primitive:nnn { abovedisplayshortskip } { assign_glue } { 5 } +\__unravel_tex_primitive:nnn { belowdisplayshortskip } { assign_glue } { 6 } +\__unravel_tex_primitive:nnn { leftskip } { assign_glue } { 7 } +\__unravel_tex_primitive:nnn { rightskip } { assign_glue } { 8 } +\__unravel_tex_primitive:nnn { topskip } { assign_glue } { 9 } +\__unravel_tex_primitive:nnn { splittopskip } { assign_glue } { 10 } +\__unravel_tex_primitive:nnn { tabskip } { assign_glue } { 11 } +\__unravel_tex_primitive:nnn { spaceskip } { assign_glue } { 12 } +\__unravel_tex_primitive:nnn { xspaceskip } { assign_glue } { 13 } +\__unravel_tex_primitive:nnn { parfillskip } { assign_glue } { 14 } +\__unravel_tex_primitive:nnn { thinmuskip } { assign_mu_glue } { 15 } +\__unravel_tex_primitive:nnn { medmuskip } { assign_mu_glue } { 16 } +\__unravel_tex_primitive:nnn { thickmuskip } { assign_mu_glue } { 17 } +\__unravel_tex_primitive:nnn { fontdimen } { assign_font_dimen } { 0 } +\__unravel_tex_primitive:nnn { hyphenchar } { assign_font_int } { 0 } +\__unravel_tex_primitive:nnn { skewchar } { assign_font_int } { 1 } +\__unravel_tex_primitive:nnn { lpcode } { assign_font_int } { 2 } +\__unravel_tex_primitive:nnn { rpcode } { assign_font_int } { 3 } +\__unravel_tex_primitive:nnn { efcode } { assign_font_int } { 4 } +\__unravel_tex_primitive:nnn { tagcode } { assign_font_int } { 5 } +\__unravel_tex_primitive:nnn { pdfnoligatures } { assign_font_int } { 6 } +\__unravel_tex_primitive:nnn { knbscode } { assign_font_int } { 7 } +\__unravel_tex_primitive:nnn { stbscode } { assign_font_int } { 8 } +\__unravel_tex_primitive:nnn { shbscode } { assign_font_int } { 9 } +\__unravel_tex_primitive:nnn { knbccode } { assign_font_int } { 10 } +\__unravel_tex_primitive:nnn { knaccode } { assign_font_int } { 11 } +\__unravel_tex_primitive:nnn { spacefactor } { set_aux } { 102 } +\__unravel_tex_primitive:nnn { prevdepth } { set_aux } { 1 } +\__unravel_tex_primitive:nnn { prevgraf } { set_prev_graf } { 0 } +\__unravel_tex_primitive:nnn { pagegoal } { set_page_dimen } { 0 } +\__unravel_tex_primitive:nnn { pagetotal } { set_page_dimen } { 1 } +\__unravel_tex_primitive:nnn { pagestretch } { set_page_dimen } { 2 } +\__unravel_tex_primitive:nnn { pagefilstretch } { set_page_dimen } { 3 } +\__unravel_tex_primitive:nnn { pagefillstretch } { set_page_dimen } { 4 } +\__unravel_tex_primitive:nnn { pagefilllstretch } { set_page_dimen } { 5 } +\__unravel_tex_primitive:nnn { pageshrink } { set_page_dimen } { 6 } +\__unravel_tex_primitive:nnn { pagedepth } { set_page_dimen } { 7 } +\__unravel_tex_primitive:nnn { deadcycles } { set_page_int } { 0 } +\__unravel_tex_primitive:nnn { insertpenalties } { set_page_int } { 1 } +\__unravel_tex_primitive:nnn { interactionmode } { set_page_int } { 2 } +\__unravel_tex_primitive:nnn { wd } { set_box_dimen } { 1 } +\__unravel_tex_primitive:nnn { dp } { set_box_dimen } { 2 } +\__unravel_tex_primitive:nnn { ht } { set_box_dimen } { 3 } +\__unravel_tex_primitive:nnn { parshape } { set_shape } { 0 } +\__unravel_tex_primitive:nnn { interlinepenalties } { set_shape } { 1 } +\__unravel_tex_primitive:nnn { clubpenalties } { set_shape } { 2 } +\__unravel_tex_primitive:nnn { widowpenalties } { set_shape } { 3 } +\__unravel_tex_primitive:nnn { displaywidowpenalties } { set_shape } { 4 } +\__unravel_tex_primitive:nnn { catcode } { def_code } { 0 } +\__unravel_tex_primitive:nnn { lccode } { def_code } { 256 } +\__unravel_tex_primitive:nnn { uccode } { def_code } { 512 } +\__unravel_tex_primitive:nnn { sfcode } { def_code } { 768 } +\__unravel_tex_primitive:nnn { mathcode } { def_code } { 1024 } +\__unravel_tex_primitive:nnn { delcode } { def_code } { 1591 } +\__unravel_tex_primitive:nnn { textfont } { def_family } { -48 } +\__unravel_tex_primitive:nnn { scriptfont } { def_family } { -32 } +\__unravel_tex_primitive:nnn { scriptscriptfont } { def_family } { -16 } +\__unravel_tex_primitive:nnn { nullfont } { set_font } { 0 } +\__unravel_tex_primitive:nnn { font } { def_font } { 0 } +\__unravel_tex_primitive:nnn { count } { register } { 1 000 000 } +\__unravel_tex_primitive:nnn { dimen } { register } { 2 000 000 } +\__unravel_tex_primitive:nnn { skip } { register } { 3 000 000 } +\__unravel_tex_primitive:nnn { muskip } { register } { 4 000 000 } +\__unravel_tex_primitive:nnn { advance } { advance } { 0 } +\__unravel_tex_primitive:nnn { multiply } { multiply } { 0 } +\__unravel_tex_primitive:nnn { divide } { divide } { 0 } +\__unravel_tex_primitive:nnn { long } { prefix } { 1 } +\__unravel_tex_primitive:nnn { outer } { prefix } { 2 } +\__unravel_tex_primitive:nnn { global } { prefix } { 4 } +\__unravel_tex_primitive:nnn { protected } { prefix } { 8 } +\__unravel_tex_primitive:nnn { let } { let } { 0 } +\__unravel_tex_primitive:nnn { futurelet } { let } { 1 } +\__unravel_tex_primitive:nnn { chardef } { shorthand_def } { 0 } +\__unravel_tex_primitive:nnn { mathchardef } { shorthand_def } { 1 } +\__unravel_tex_primitive:nnn { countdef } { shorthand_def } { 2 } +\__unravel_tex_primitive:nnn { dimendef } { shorthand_def } { 3 } +\__unravel_tex_primitive:nnn { skipdef } { shorthand_def } { 4 } +\__unravel_tex_primitive:nnn { muskipdef } { shorthand_def } { 5 } +\__unravel_tex_primitive:nnn { toksdef } { shorthand_def } { 6 } +\__unravel_tex_primitive:nnn { read } { read_to_cs } { 0 } +\__unravel_tex_primitive:nnn { readline } { read_to_cs } { 1 } +\__unravel_tex_primitive:nnn { def } { def } { 0 } +\__unravel_tex_primitive:nnn { gdef } { def } { 1 } +\__unravel_tex_primitive:nnn { edef } { def } { 2 } +\__unravel_tex_primitive:nnn { xdef } { def } { 3 } +\__unravel_tex_primitive:nnn { setbox } { set_box } { 0 } +\__unravel_tex_primitive:nnn { hyphenation } { hyph_data } { 0 } +\__unravel_tex_primitive:nnn { patterns } { hyph_data } { 1 } +\__unravel_tex_primitive:nnn { batchmode } { set_interaction } { 0 } +\__unravel_tex_primitive:nnn { nonstopmode } { set_interaction } { 1 } +\__unravel_tex_primitive:nnn { scrollmode } { set_interaction } { 2 } +\__unravel_tex_primitive:nnn { errorstopmode } { set_interaction } { 3 } +\__unravel_tex_primitive:nnn { letterspacefont } { letterspace_font } { 0 } +\__unravel_tex_primitive:nnn { pdfcopyfont } { pdf_copy_font } { 0 } +\__unravel_tex_primitive:nnn { undefined } { undefined_cs } { 0 } +\__unravel_tex_primitive:nnn { ndefined } { undefined_cs } { 0 } +\__unravel_tex_primitive:nnn { expandafter } { expand_after } { 0 } +\__unravel_tex_primitive:nnn { unless } { expand_after } { 1 } +\__unravel_tex_primitive:nnn { pdfprimitive } { no_expand } { 1 } +\__unravel_tex_primitive:nnn { noexpand } { no_expand } { 0 } +\__unravel_tex_primitive:nnn { input } { input } { 0 } +\__unravel_tex_primitive:nnn { endinput } { input } { 1 } +\__unravel_tex_primitive:nnn { scantokens } { input } { 2 } +\__unravel_tex_primitive:nnn { if } { if_test } { 0 } +\__unravel_tex_primitive:nnn { ifcat } { if_test } { 1 } +\__unravel_tex_primitive:nnn { ifnum } { if_test } { 2 } +\__unravel_tex_primitive:nnn { ifdim } { if_test } { 3 } +\__unravel_tex_primitive:nnn { ifodd } { if_test } { 4 } +\__unravel_tex_primitive:nnn { ifvmode } { if_test } { 5 } +\__unravel_tex_primitive:nnn { ifhmode } { if_test } { 6 } +\__unravel_tex_primitive:nnn { ifmmode } { if_test } { 7 } +\__unravel_tex_primitive:nnn { ifinner } { if_test } { 8 } +\__unravel_tex_primitive:nnn { ifvoid } { if_test } { 9 } +\__unravel_tex_primitive:nnn { ifhbox } { if_test } { 10 } +\__unravel_tex_primitive:nnn { ifvbox } { if_test } { 11 } +\__unravel_tex_primitive:nnn { ifx } { if_test } { 12 } +\__unravel_tex_primitive:nnn { ifeof } { if_test } { 13 } +\__unravel_tex_primitive:nnn { iftrue } { if_test } { 14 } +\__unravel_tex_primitive:nnn { iffalse } { if_test } { 15 } +\__unravel_tex_primitive:nnn { ifcase } { if_test } { 16 } +\__unravel_tex_primitive:nnn { ifdefined } { if_test } { 17 } +\__unravel_tex_primitive:nnn { ifcsname } { if_test } { 18 } +\__unravel_tex_primitive:nnn { iffontchar } { if_test } { 19 } +\__unravel_tex_primitive:nnn { ifincsname } { if_test } { 20 } +\__unravel_tex_primitive:nnn { ifpdfprimitive } { if_test } { 21 } +\__unravel_tex_primitive:nnn { ifpdfabsnum } { if_test } { 22 } +\__unravel_tex_primitive:nnn { ifpdfabsdim } { if_test } { 23 } +\__unravel_tex_primitive:nnn { fi } { fi_or_else } { 2 } +\__unravel_tex_primitive:nnn { else } { fi_or_else } { 3 } +\__unravel_tex_primitive:nnn { or } { fi_or_else } { 4 } +\__unravel_tex_primitive:nnn { csname } { cs_name } { 0 } +\__unravel_tex_primitive:nnn { number } { convert } { 0 } +\__unravel_tex_primitive:nnn { romannumeral } { convert } { 1 } +\__unravel_tex_primitive:nnn { string } { convert } { 2 } +\__unravel_tex_primitive:nnn { meaning } { convert } { 3 } +\__unravel_tex_primitive:nnn { fontname } { convert } { 4 } +\__unravel_tex_primitive:nnn { eTeXrevision } { convert } { 5 } +\__unravel_tex_primitive:nnn { pdftexrevision } { convert } { 6 } +\__unravel_tex_primitive:nnn { pdftexbanner } { convert } { 7 } +\__unravel_tex_primitive:nnn { pdffontname } { convert } { 8 } +\__unravel_tex_primitive:nnn { pdffontobjnum } { convert } { 9 } +\__unravel_tex_primitive:nnn { pdffontsize } { convert } { 10 } +\__unravel_tex_primitive:nnn { pdfpageref } { convert } { 11 } +\__unravel_tex_primitive:nnn { pdfxformname } { convert } { 12 } +\__unravel_tex_primitive:nnn { pdfescapestring } { convert } { 13 } +\__unravel_tex_primitive:nnn { pdfescapename } { convert } { 14 } +\__unravel_tex_primitive:nnn { leftmarginkern } { convert } { 15 } +\__unravel_tex_primitive:nnn { rightmarginkern } { convert } { 16 } +\__unravel_tex_primitive:nnn { pdfstrcmp } { convert } { 17 } +\__unravel_tex_primitive:nnn { pdfcolorstackinit } { convert } { 18 } +\__unravel_tex_primitive:nnn { pdfescapehex } { convert } { 19 } +\__unravel_tex_primitive:nnn { pdfunescapehex } { convert } { 20 } +\__unravel_tex_primitive:nnn { pdfcreationdate } { convert } { 21 } +\__unravel_tex_primitive:nnn { pdffilemoddate } { convert } { 22 } +\__unravel_tex_primitive:nnn { pdffilesize } { convert } { 23 } +\__unravel_tex_primitive:nnn { pdfmdfivesum } { convert } { 24 } +\__unravel_tex_primitive:nnn { pdffiledump } { convert } { 25 } +\__unravel_tex_primitive:nnn { pdfmatch } { convert } { 26 } +\__unravel_tex_primitive:nnn { pdflastmatch } { convert } { 27 } +\__unravel_tex_primitive:nnn { pdfuniformdeviate } { convert } { 28 } +\__unravel_tex_primitive:nnn { pdfnormaldeviate } { convert } { 29 } +\__unravel_tex_primitive:nnn { pdfinsertht } { convert } { 30 } +\__unravel_tex_primitive:nnn { pdfximagebbox } { convert } { 31 } +\__unravel_tex_primitive:nnn { jobname } { convert } { 32 } +\__unravel_tex_primitive:nnn { the } { the } { 0 } +\__unravel_tex_primitive:nnn { unexpanded } { the } { 1 } +\__unravel_tex_primitive:nnn { detokenize } { the } { 5 } +\__unravel_tex_primitive:nnn { topmark } { top_bot_mark } { 0 } +\__unravel_tex_primitive:nnn { firstmark } { top_bot_mark } { 1 } +\__unravel_tex_primitive:nnn { botmark } { top_bot_mark } { 2 } +\__unravel_tex_primitive:nnn { splitfirstmark } { top_bot_mark } { 3 } +\__unravel_tex_primitive:nnn { splitbotmark } { top_bot_mark } { 4 } +\__unravel_tex_primitive:nnn { topmarks } { top_bot_mark } { 5 } +\__unravel_tex_primitive:nnn { firstmarks } { top_bot_mark } { 6 } +\__unravel_tex_primitive:nnn { botmarks } { top_bot_mark } { 7 } +\__unravel_tex_primitive:nnn { splitfirstmarks } { top_bot_mark } { 8 } +\__unravel_tex_primitive:nnn { splitbotmarks } { top_bot_mark } { 9 } +\cs_new_protected_nopar:Npn \__unravel_get_next: + { + \__unravel_input_if_empty:TF + { \__unravel_exit:w } + { + \__unravel_input_gpop:N \l__unravel_head_gtl + \gtl_head_do:NN \l__unravel_head_gtl \__unravel_get_next_aux:w + \gtl_if_tl:NTF \l__unravel_head_gtl + { + \tl_set:Nx \l__unravel_head_tl + { \gtl_head:N \l__unravel_head_gtl } + } + { \tl_clear:N \l__unravel_head_tl } + } + } +\cs_new_protected_nopar:Npn \__unravel_get_next_aux:w + { \cs_set_eq:NN \l__unravel_head_token } +\cs_new_protected_nopar:Npn \__unravel_get_token: + { + \__unravel_get_next: + \__unravel_set_cmd: + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd: + { + \__unravel_set_cmd_aux_meaning: + \__unravel_set_cmd_aux_primitive:oTF { \l__unravel_head_meaning_tl } + { } + { + \__unravel_token_if_expandable:NTF \l__unravel_head_token + { + \token_if_macro:NTF \l__unravel_head_token + { \__unravel_set_cmd_aux_macro: } + { \__unravel_set_cmd_aux_unknown: } + } + { + \token_if_cs:NTF \l__unravel_head_token + { \__unravel_set_cmd_aux_cs: } + { \__unravel_set_cmd_aux_char: } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_meaning: + { + \tl_set:Nx \l__unravel_head_meaning_tl + { + \exp_after:wN \__unravel_strip_escape:w + \token_to_meaning:N \l__unravel_head_token + \tl_to_str:n { : } + } + \tl_set:Nx \l__unravel_head_meaning_tl + { + \exp_after:wN \__unravel_set_cmd_aux_meaning:w + \l__unravel_head_meaning_tl \q_stop + } + } +\use:x + { + \cs_new:Npn \exp_not:N \__unravel_set_cmd_aux_meaning:w + ##1 \token_to_str:N : ##2 \exp_not:N \q_stop {##1} + } +\cs_new_protected:Npn \__unravel_set_cmd_aux_primitive:nTF #1#2 + { + \cs_if_exist:cTF { c__unravel_tex_#1_tl } + { + \exp_last_unbraced:Nv \__unravel_set_cmd_aux_primitive:nn + { c__unravel_tex_#1_tl } + #2 + } + } +\cs_generate_variant:Nn \__unravel_set_cmd_aux_primitive:nTF { o } +\cs_new_protected:Npn \__unravel_set_cmd_aux_primitive:nn #1#2 + { + \int_set:Nn \l__unravel_head_cmd_int {#1} + \int_set:Nn \l__unravel_head_char_int {#2} + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_macro: + { + \int_set:Nn \l__unravel_head_cmd_int { \__unravel_tex_use:n { call } } + \int_zero:N \l__unravel_head_char_int + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_unknown: + { + \exp_last_unbraced:NV \__unravel_set_cmd_aux_primitive:nn + \c__unravel_tex_relax_tl + \msg_error:nnx { unravel } { unknown-primitive } + { \l__unravel_head_meaning_tl } + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_cs: + { + \tl_if_in:NoTF \l__unravel_head_meaning_tl + { \tl_to_str:n { elect~font } } + { + \exp_last_unbraced:NV \__unravel_set_cmd_aux_primitive:nn + \c__unravel_tex_nullfont_tl + } + { \__unravel_set_cmd_aux_numeric: } + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_numeric: + { + \tl_set:Nx \l__unravel_tmpa_tl + { + \exp_after:wN \__unravel_set_cmd_aux_numeric:N + \l__unravel_head_meaning_tl + 0 + } + \exp_after:wN \__unravel_set_cmd_aux_numeric:w + \l__unravel_tmpa_tl \q_stop + } +\cs_new:Npn \__unravel_set_cmd_aux_numeric:N #1 + { + \if_int_compare:w `#1 < `A \exp_stop_f: + \exp_not:N \q_mark + \exp_after:wN \use_i:nn + \fi: + #1 \__unravel_set_cmd_aux_numeric:N + } +\cs_new_protected:Npn \__unravel_set_cmd_aux_numeric:w #1 \q_mark #2 \q_stop + { + \str_case:nnF {#1} + { + { char } { \__unravel_set_cmd_aux_given:n { char_given } } + { mathchar } { \__unravel_set_cmd_aux_given:n { math_given } } + } + { + \__unravel_set_cmd_aux_primitive:nTF {#1} + { } + { \__unravel_set_cmd_aux_unknown: } + \int_add:Nn \l__unravel_head_char_int { 100 000 } + } + \int_add:Nn \l__unravel_head_char_int {#2} + } +\cs_new_protected:Npn \__unravel_set_cmd_aux_given:n #1 + { + \int_set:Nn \l__unravel_head_cmd_int { \__unravel_tex_use:n {#1} } + \int_zero:N \l__unravel_head_char_int + } +\cs_new_protected_nopar:Npn \__unravel_set_cmd_aux_char: + { + \tl_set:Nx \l__unravel_head_meaning_tl + { \token_to_meaning:N \l__unravel_head_token } + \token_if_eq_catcode:NNT \l__unravel_head_token \c_catcode_other_token + { \tl_set:Nn \l__unravel_head_meaning_tl { other~ } } + \exp_after:wN \__unravel_set_cmd_aux_char:w + \l__unravel_head_meaning_tl \q_stop + \exp_args:NNx \int_set:Nn \l__unravel_head_char_int + { ` \__unravel_token_to_char:N \l__unravel_head_token } + } +\cs_new_protected:Npn \__unravel_set_cmd_aux_char:w #1 ~ #2 \q_stop + { + \int_set:Nn \l__unravel_head_cmd_int + { \__unravel_tex_use:n { #1_char } } + } +\cs_new_nopar:Npn \__unravel_input_to_str: + { + \int_step_function:nnnN \g__unravel_input_int { -1 } { 1 } + \__unravel_input_to_str_aux:n + } +\cs_new:Npn \__unravel_input_to_str_aux:n #1 + { \gtl_to_str:c { g__unravel_input_#1_gtl } } +\cs_new_protected:Npn \__unravel_input_if_empty:TF + { + \int_compare:nNnTF \g__unravel_input_int = \c_zero + { \use_i:nn } + { + \gtl_if_empty:cTF + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + { + \int_gdecr:N \g__unravel_input_int + \__unravel_input_if_empty:TF + } + { + \__unravel_input_split: + \use_ii:nn + } + } + } +\cs_new_protected_nopar:Npn \__unravel_input_split: + { + \int_compare:nNnT \g__unravel_input_int = \c_one + { + \exp_args:Nc \__unravel_input_split_aux:N + { g__unravel_input_1_gtl } + } + } +\cs_new_protected:Npn \__unravel_input_split_aux:N #1 + { + \gtl_if_tl:NT #1 + { + \gtl_if_head_is_N_type:NT #1 + { + \tl_set:Nx \l__unravel_input_tmpa_tl { \gtl_left_tl:N #1 } + \exp_last_unbraced:Nx \__unravel_input_split_auxii:N + { \tl_head:N \l__unravel_input_tmpa_tl } + } + } + } +\cs_new_protected:Npn \__unravel_input_split_auxii:N #1 + { + \token_if_parameter:NF #1 + { + \tl_replace_all:Nnn \l__unravel_input_tmpa_tl {#1} + { \__unravel_input_split_end: \__unravel_input_split_auxiii:w #1 } + \group_begin: + \cs_set:Npn \__unravel_input_split_auxiii:w + ##1 \__unravel_input_split_end: { + 1 } + \int_gset:Nn \g__unravel_input_int + { 0 \l__unravel_input_tmpa_tl \__unravel_input_split_end: } + \group_end: + \int_gset_eq:NN \g__unravel_input_tmpa_int \g__unravel_input_int + \l__unravel_input_tmpa_tl \__unravel_input_split_end: + } + } +\cs_new_nopar:Npn \__unravel_input_split_end: { } +\cs_new_protected:Npn \__unravel_input_split_auxiii:w + #1 \__unravel_input_split_end: + { + \gtl_gset:cn + { g__unravel_input_ \int_use:N \g__unravel_input_tmpa_int _gtl } {#1} + \int_gdecr:N \g__unravel_input_tmpa_int + } +\cs_new_protected_nopar:Npn \__unravel_input_gset:n + { + \int_gset_eq:NN \g__unravel_input_int \c_one + \gtl_gset:cn { g__unravel_input_1_gtl } + } +\cs_new_protected:Npn \__unravel_input_get:N #1 + { + \__unravel_input_if_empty:TF + { \gtl_set:Nn #1 { \q_no_value } } + { + \gtl_get_left:cN + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } #1 + } + } +\cs_new_protected:Npn \__unravel_input_gpop:N #1 + { + \__unravel_input_if_empty:TF + { \gtl_set:Nn #1 { \q_no_value } } + { + \gtl_gpop_left:cN + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } #1 + } + } +\cs_new_protected_nopar:Npn \__unravel_input_merge: + { + \int_gdecr:N \g__unravel_input_int + \gtl_gconcat:ccc + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + { g__unravel_input_ \int_eval:n { \g__unravel_input_int + 1 } _gtl } + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + \gtl_gclear:c + { g__unravel_input_ \int_eval:n { \g__unravel_input_int + 1 } _gtl } + } +\prg_new_protected_conditional:Npnn \__unravel_input_gpop_item:N #1 { F } + { + \int_compare:nNnTF \g__unravel_input_int = \c_zero + { \prg_return_false: } + { + \exp_args:Nc \__unravel_input_gpop_item_aux:NN + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } #1 + } + } +\cs_new_protected:Npn \__unravel_input_gpop_item_aux:NN #1#2 + { + \gtl_gpop_left_item:NNTF #1#2 + { \prg_return_true: } + { + \int_compare:nNnTF { \gtl_extra_end:N #1 } > \c_zero + { \prg_return_false: } + { + \int_compare:nNnTF \g__unravel_input_int = \c_one + { \prg_return_false: } + { + \__unravel_input_merge: + \exp_args:Nc \__unravel_input_gpop_item_aux:NN + { + g__unravel_input_ + \int_use:N \g__unravel_input_int _gtl + } + #2 + } + } + } + } +\cs_new_protected:Npn \__unravel_input_gpop_tl:N #1 + { \tl_clear:N #1 \__unravel_input_gpop_tl_aux:N #1 } +\cs_new_protected:Npn \__unravel_input_gpop_tl_aux:N #1 + { + \int_compare:nNnF \g__unravel_input_int = \c_zero + { + \exp_args:Nc \__unravel_input_gpop_tl_aux:NN + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } #1 + } + } +\cs_new_protected:Npn \__unravel_input_gpop_tl_aux:NN #1#2 + { + \gtl_if_tl:NTF #1 + { + \tl_put_right:Nx #2 { \gtl_left_tl:N #1 } + \gtl_gclear:N #1 + \int_gdecr:N \g__unravel_input_int + \__unravel_input_gpop_tl_aux:N #2 + } + { + \int_compare:nNnTF \g__unravel_input_int > \c_one + { \int_compare:nNnTF { \gtl_extra_end:N #1 } > \c_zero } + { \use_i:nn } + { + \tl_put_right:Nx #2 { \gtl_left_tl:N #1 } + \gtl_gpop_left_tl:N #1 + } + { + \__unravel_input_merge: + \__unravel_input_gpop_tl_aux:N #2 + } + } + } +\cs_new_protected_nopar:Npn \__unravel_back_input:n + { + \int_gincr:N \g__unravel_input_int + \gtl_gset:cn { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + } +\cs_generate_variant:Nn \__unravel_back_input:n { x , V , o } +\cs_new_protected:Npn \__unravel_back_input_gtl:N #1 + { + \gtl_if_tl:NTF #1 + { \__unravel_back_input:x { \gtl_left_tl:N #1 } } + { + \gtl_gconcat:cNc + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + #1 + { g__unravel_input_ \int_use:N \g__unravel_input_int _gtl } + } + } +\cs_new_protected_nopar:Npn \__unravel_back_input: + { \__unravel_back_input_gtl:N \l__unravel_head_gtl } +\cs_new_protected_nopar:Npn \__unravel_back_input_tl_o: + { + \tl_set:Nx \l__unravel_tmpa_tl + { \exp_args:NV \exp_not:o \l__unravel_head_tl } + \__unravel_back_input:V \l__unravel_tmpa_tl + \__unravel_print_done:x + { \tl_to_str:N \l__unravel_head_tl = \tl_to_str:N \l__unravel_tmpa_tl } + } +\cs_new_protected_nopar:Npn \__unravel_insert_relax: + { + \__unravel_back_input: + \gtl_set_eq:NN \l__unravel_head_gtl \c__unravel_frozen_relax_gtl + \__unravel_back_input: + \__unravel_print_action: + } +\cs_new_protected_nopar:Npn \__unravel_insert_group_begin_error: + { + \msg_error:nn { unravel } { missing-lbrace } + \__unravel_back_input: + \gtl_set_eq:NN \l__unravel_head_gtl \c_group_begin_gtl + \__unravel_back_input: + \__unravel_print_action: + } +\cs_new_protected_nopar:Npn \__unravel_insert_dollar_error: + { + \__unravel_back_input: + \__unravel_back_input:n { $ } % $ + \msg_error:nn { unravel } { missing-dollar } + \__unravel_print_action: + } +\group_begin: + \char_set_lccode:nn { `. } { `: } + \tex_lowercase:D + { + \cs_new:Npn \__unravel_macro_split_do:NN #1 + { + \exp_after:wN \__unravel_macro_split_do:wN + \token_to_meaning:N #1 \q_mark { } . -> \q_mark \use_none:nnnn + \q_stop + } + \cs_new:Npn \__unravel_macro_split_do:wN + #1 . #2 -> #3 \q_mark #4 #5 \q_stop #6 + { #4 #6 {#1} {#2} {#3} } + } +\group_end: +\cs_new:Npn \__unravel_macro_prefix:N #1 + { \__unravel_macro_split_do:NN #1 \use_i:nnn } +\cs_new:Npn \__unravel_macro_parameter:N #1 + { \__unravel_macro_split_do:NN #1 \use_ii:nnn } +\cs_new:Npn \__unravel_macro_replacement:N #1 + { \__unravel_macro_split_do:NN #1 \use_iii:nnn } +\cs_new_protected_nopar:Npn \__unravel_macro_call: + { + \bool_if:NTF \g__unravel_speedup_macros_bool + { + \tl_set:Nx \l__unravel_tmpa_tl + {^ \exp_after:wN \__unravel_macro_parameter:N \l__unravel_head_tl } + \tl_if_in:NVTF \c__unravel_parameters_tl \l__unravel_tmpa_tl + { \__unravel_macro_call_quick: } { \__unravel_macro_call_safe: } + } + { \__unravel_macro_call_safe: } + \exp_args:NV \__unravel_back_input:o \l__unravel_head_tl + \__unravel_print_done:x { \g__unravel_action_text_str } + } +\cs_new_protected_nopar:Npn \__unravel_macro_call_safe: + { + \__unravel_input_gpop_tl:N \l__unravel_tmpa_tl + \tl_put_right:NV \l__unravel_head_tl \l__unravel_tmpa_tl + } +\cs_new_protected_nopar:Npn \__unravel_macro_call_quick: + { + \exp_after:wN \__unravel_macro_call_quick_loop:NN \l__unravel_tmpa_tl + { ? \use_none_delimit_by_q_stop:w } \q_stop + } +\cs_new_protected_nopar:Npn \__unravel_macro_call_quick_loop:NN #1#2 + { + \use_none:n #2 + \__unravel_input_gpop_item:NF \l__unravel_tmpa_tl + { \msg_error:nn { unravel } { runaway-macro-parameter } } + \tl_put_right:Nx \l__unravel_head_tl + { { \exp_not:V \l__unravel_tmpa_tl } } + \__unravel_macro_call_quick_loop:NN + } +\cs_new_protected_nopar:Npn \__unravel_expand: + { + \__unravel_set_action_text: + \bool_if:NT \l__unravel_debug_bool + { + \__unravel_set_cmd: + \iow_term:x { Exp:~\int_use:N \l__unravel_head_cmd_int } + } + \token_if_macro:NTF \l__unravel_head_token + { \__unravel_macro_call: } + { \__unravel_expand_nonmacro: } + } +\cs_new_protected_nopar:Npn \__unravel_expand_nonmacro: + { + \__unravel_set_cmd_aux_meaning: + \__unravel_set_cmd_aux_primitive:oTF { \l__unravel_head_meaning_tl } + { + \cs_if_exist_use:cF + { __unravel_expandable_ \int_use:N \l__unravel_head_cmd_int : } + { \msg_error:nnx { unravel } { internal } { expandable } } + } + { + \msg_error:nnx { unravel } { unknown-primitive } + { \l__unravel_head_meaning_tl } + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \__unravel_print_action: + } + } +\cs_new_protected_nopar:Npn \__unravel_get_x_next: + { + \__unravel_get_next: + \__unravel_token_if_expandable:NT \l__unravel_head_token + { + \__unravel_expand: + \__unravel_get_x_next: + } + } +\cs_new_protected_nopar:Npn \__unravel_get_x_or_protected: + { + \__unravel_get_next: + \__unravel_token_if_protected:NF \l__unravel_head_token + { + \__unravel_expand: + \__unravel_get_x_or_protected: + } + } +\cs_new_protected_nopar:Npn \__unravel_get_x_non_blank: + { + \__unravel_get_x_next: + \token_if_eq_catcode:NNT \l__unravel_head_token \c_space_token + { \__unravel_get_x_non_blank: } + } +\cs_new_protected_nopar:Npn \__unravel_get_x_non_relax: + { + \__unravel_get_x_next: + \token_if_eq_meaning:NNT \l__unravel_head_token \scan_stop: + { \__unravel_get_x_non_relax: } + { + \token_if_eq_catcode:NNT \l__unravel_head_token \c_space_token + { \__unravel_get_x_non_relax: } + } + } +\cs_new_protected_nopar:Npn \__unravel_skip_optional_space: + { + \__unravel_get_x_next: + \token_if_eq_catcode:NNF \l__unravel_head_token \c_space_token + { \__unravel_back_input: } + } +\cs_new_protected_nopar:Npn \__unravel_scan_optional_equals: + { + \__unravel_get_x_non_blank: + \tl_if_eq:NNTF \l__unravel_head_tl \c__unravel_eq_tl + { \__unravel_prev_input:n { = } } + { + \__unravel_prev_input_silent:n { = } + \__unravel_back_input: + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_left_brace: + { + \__unravel_get_x_non_relax: + \token_if_eq_catcode:NNF \l__unravel_head_token \c_group_begin_token + { \__unravel_insert_group_begin_error: } + } +\cs_new_protected:Npn \__unravel_scan_keyword:n #1 + { \__unravel_scan_keyword:nTF {#1} { } { } } +\prg_new_protected_conditional:Npnn \__unravel_scan_keyword:n #1 + { T , F , TF } + { + \seq_gput_right:NV \g__unravel_prev_input_seq \c_empty_gtl + \__unravel_scan_keyword_loop:NNN \c_true_bool + #1 \q_recursion_tail \q_recursion_tail \q_recursion_stop + } +\cs_new_protected:Npn \__unravel_scan_keyword_loop:NNN #1#2#3 + { + \quark_if_recursion_tail_stop_do:nn {#2} + { \__unravel_scan_keyword_true: } + \quark_if_recursion_tail_stop_do:nn {#3} + { \msg_error:nnx { unravel } { internal } { odd-keyword-length } } + \__unravel_get_x_next: + \__unravel_scan_keyword_test:NNTF #2#3 + { + \__unravel_prev_input_gtl:N \l__unravel_head_gtl + \__unravel_scan_keyword_loop:NNN \c_false_bool + } + { + \token_if_eq_catcode:NNF \l__unravel_head_token \c_space_token + { \__unravel_scan_keyword_false:w } + \bool_if:NF #1 + { \__unravel_scan_keyword_false:w } + \__unravel_scan_keyword_loop:NNN #1#2#3 + } + } +\prg_new_protected_conditional:Npnn \__unravel_scan_keyword_test:NN #1#2 + { TF } + { + \__unravel_gtl_if_head_is_definable:NTF \l__unravel_head_gtl + { \prg_return_false: } + { + \str_if_eq_x:nnTF + { \str_head:f { \gtl_to_str:N \l__unravel_head_gtl } } {#1} + { \prg_return_true: } + { + \str_if_eq_x:nnTF + { \str_head:f { \gtl_to_str:N \l__unravel_head_gtl } } {#2} + { \prg_return_true: } + { \prg_return_false: } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_keyword_true: + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpb_gtl + \__unravel_prev_input:x { \gtl_to_str:N \l__unravel_tmpb_gtl } + \prg_return_true: + } +\cs_new_protected_nopar:Npn \__unravel_scan_keyword_false:w + #1 \q_recursion_stop + { + \__unravel_back_input: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpb_gtl + \__unravel_back_input_gtl:N \l__unravel_tmpb_gtl + \prg_return_false: + } +\cs_new_protected_nopar:Npn \__unravel_scan_font_ident: + { + \__unravel_get_x_non_blank: + \__unravel_set_cmd: + \int_case:nnF \l__unravel_head_cmd_int + { + { \__unravel_tex_use:n { def_font } } + { \__unravel_prev_input:V \l__unravel_head_tl } + { \__unravel_tex_use:n { letterspace_font } } + { \__unravel_prev_input:V \l__unravel_head_tl } + { \__unravel_tex_use:n { pdf_copy_font } } + { \__unravel_prev_input:V \l__unravel_head_tl } + { \__unravel_tex_use:n { set_font } } + { \__unravel_prev_input:V \l__unravel_head_tl } + { \__unravel_tex_use:n { def_family } } + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_int: + } + } + { + \msg_error:nn { unravel } { missing-font-id } + \__unravel_prev_input:n { \tex_nullfont:D } + \__unravel_back_error: + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_font_int: + { + \int_case:nnF \l__unravel_head_char_int + { + { 0 } { \__unravel_scan_font_ident: } + { 1 } { \__unravel_scan_font_ident: } + { 6 } { \__unravel_scan_font_ident: } + } + { \__unravel_scan_font_ident: \__unravel_scan_int: } + } +\cs_new_protected_nopar:Npn \__unravel_scan_font_dimen: + { + \__unravel_scan_int: + \__unravel_scan_font_ident: + } +\cs_new_protected:Npn \__unravel_scan_something_internal:n #1 + { + \__unravel_set_cmd: + \__unravel_set_action_text: + \tl_set:Nf \l__unravel_tmpa_tl { \__unravel_thing_case: } + \exp_after:wN \__unravel_scan_something_aux:nwn + \l__unravel_tmpa_tl \q_stop {#1} + } +\cs_new_protected:Npn \__unravel_scan_something_aux:nwn #1#2 \q_stop #3 + { + \int_compare:nNnTF + { ( #1 + \c_two ) / \c_four } > { ( #3 + \c_two ) / \c_four } + { \__unravel_back_input: } + { + \tl_if_empty:nF {#2} + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + #2 + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + } + } + \tl_set:Nx \l__unravel_tmpa_tl + { \__unravel_thing_use:nnN {#1} {#3} \l__unravel_head_tl } + \__unravel_prev_input_silent:V \l__unravel_tmpa_tl + \__unravel_set_action_text: + \__unravel_set_action_text:x + { \g__unravel_action_text_str = ~ \tl_to_str:N \l__unravel_tmpa_tl } + \int_compare:nNnF {#3} > { 3 } { \__unravel_print_action: } + \int_gset:Nn \g__unravel_val_level_int {#1} + } +\cs_new_nopar:Npn \__unravel_thing_case: + { + \int_case:nnF \l__unravel_head_cmd_int + { + { 68 } { 0 } % char_given + { 69 } { 0 } % math_given + { 70 } { \__unravel_thing_last_item: } % last_item + { 71 } { 5 \__unravel_scan_toks_register: } % toks_register + { 72 } { 5 } % assign_toks + { 73 } { 0 } % assign_int + { 74 } { 1 } % assign_dimen + { 75 } { 2 } % assign_glue + { 76 } { 3 } % assign_mu_glue + { 77 } { 1 \__unravel_scan_font_dimen: } % assign_font_dimen + { 78 } { 0 \__unravel_scan_font_int: } % assign_font_int + { 79 } { 0 } % set_aux + { 80 } { 0 } % set_prev_graf + { 81 } { 1 } % set_page_dimen + { 82 } { 0 } % set_page_int + { 83 } { 1 \__unravel_scan_int: } % set_box_dimen + { 84 } { 0 \__unravel_scan_int: } % set_shape + { 85 } { 0 \__unravel_scan_int: } % def_code + { 86 } { 4 \__unravel_scan_font_ident: } % def_family + { 87 } { 4 \__unravel_scan_font_ident: } % set_font + { 88 } { 4 \__unravel_scan_font_ident: } % def_font + { 89 } { \__unravel_thing_register: } % register + } + { 8 } + } +\cs_new_nopar:Npn \__unravel_thing_last_item: + { + \int_compare:nNnTF \l__unravel_head_char_int < { 26 } + { + \int_case:nnF \l__unravel_head_char_int + { + { 1 } { 1 } % lastkern + { 2 } { 2 } % lastskip + } + { 0 } % other integer parameters + } + { + \int_case:nnF \l__unravel_head_char_int + { + { 26 } { 0 \__unravel_scan_normal_glue: } % gluestretchorder + { 27 } { 0 \__unravel_scan_normal_glue: } % glueshrinkorder + { 28 } % fontcharwd + { 1 \__unravel_scan_font_ident: \__unravel_scan_int: } + { 29 } % fontcharht + { 1 \__unravel_scan_font_ident: \__unravel_scan_int: } + { 30 } % fontchardp + { 1 \__unravel_scan_font_ident: \__unravel_scan_int: } + { 31 } % fontcharic + { 1 \__unravel_scan_font_ident: \__unravel_scan_int: } + { 32 } { 1 \__unravel_scan_int: } % parshapelength + { 33 } { 1 \__unravel_scan_int: } % parshapeindent + { 34 } { 1 \__unravel_scan_int: } % parshapedimen + { 35 } { 1 \__unravel_scan_normal_glue: } % gluestretch + { 36 } { 1 \__unravel_scan_normal_glue: } % glueshrink + { 37 } { 2 \__unravel_scan_mu_glue: } % mutoglue + { 38 } { 3 \__unravel_scan_normal_glue: } % gluetomu + { 39 } % numepr + { 0 \__unravel_scan_expr:N \__unravel_scan_int: } + { 40 } % dimexpr + { 1 \__unravel_scan_expr:N \__unravel_scan_normal_dimen: } + { 41 } % glueexpr + { 2 \__unravel_scan_expr:N \__unravel_scan_normal_glue: } + { 42 } % muexpr + { 3 \__unravel_scan_expr:N \__unravel_scan_mu_glue: } + } + { } + } + } +\cs_new_nopar:Npn \__unravel_thing_register: + { + \int_eval:n { \l__unravel_head_char_int / 1 000 000 - 1 } + \int_compare:nNnT { \tl_tail:V \l__unravel_head_char_int } = \c_zero + { \__unravel_scan_int: } + } +\cs_new_protected:Npn \__unravel_scan_toks_register: + { + \int_compare:nNnT \l__unravel_head_char_int = \c_zero + { \__unravel_scan_int: } + } +\cs_new:Npn \__unravel_thing_use:nnN #1#2 + { + \int_case:nnF { \int_min:nn {#1} {#2} } + { + { 0 } \int_eval:n + { 1 } \dim_eval:n + { 2 } \skip_eval:n + { 3 } \muskip_eval:n + } + { \tex_the:D } + } +\cs_new_protected:Npn \__unravel_scan_expr:N #1 + { \__unravel_scan_expr_aux:NN #1 \c_false_bool } +\cs_new_protected:Npn \__unravel_scan_expr_aux:NN #1#2 + { + \__unravel_get_x_non_blank: + \__unravel_scan_factor:N #1 + \__unravel_scan_expr_op:NN #1#2 + } +\cs_new_protected:Npn \__unravel_scan_expr_op:NN #1#2 + { + \__unravel_get_x_non_blank: + \tl_case:NnF \l__unravel_head_tl + { + \c__unravel_plus_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_expr_aux:NN #1#2 + } + \c__unravel_minus_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_expr_aux:NN #1#2 + } + \c__unravel_times_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_non_blank: + \__unravel_scan_factor:N \__unravel_scan_int: + \__unravel_scan_expr_op:NN #1#2 + } + \c__unravel_over_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_non_blank: + \__unravel_scan_factor:N \__unravel_scan_int: + \__unravel_scan_expr_op:NN #1#2 + } + \c__unravel_rp_tl + { + \bool_if:NTF #2 + { \__unravel_prev_input:V \l__unravel_head_tl } + { \__unravel_back_input: } + } + } + { + \bool_if:NTF #2 + { + \msg_error:nn { unravel } { missing-rparen } + \__unravel_back_input: + \__unravel_prev_input:V \c__unravel_rp_tl + } + { + \token_if_eq_meaning:NNF \l__unravel_head_token \scan_stop: + { \__unravel_back_input: } + } + } + } +\cs_new_protected:Npn \__unravel_scan_factor:N #1 + { + \tl_if_eq:NNTF \l__unravel_head_tl \c__unravel_lp_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_expr_aux:NN #1 \c_true_bool + } + { + \__unravel_back_input: + #1 + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_signs: + { + \__unravel_get_x_non_blank: + \tl_if_eq:NNTF \l__unravel_head_tl \c__unravel_plus_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_signs: + } + { + \tl_if_eq:NNT \l__unravel_head_tl \c__unravel_minus_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_signs: + } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_int: + { + \__unravel_scan_signs: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int < { \__unravel_tex_use:n { min_internal } } + { \__unravel_scan_int_char: } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_internal } } + { \__unravel_scan_int_char: } + { \__unravel_scan_something_internal:n { 0 } } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_int_char: + { + \tl_case:NnF \l__unravel_head_tl + { + \c__unravel_lq_tl { \__unravel_scan_int_lq: } + \c__unravel_rq_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_next: + \__unravel_scan_int_explicit:n { ' } + } + \c__unravel_dq_tl + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_next: + \__unravel_scan_int_explicit:n { " } + } + } + { \__unravel_scan_int_explicit:n { } } + } +\cs_new_protected_nopar:Npn \__unravel_scan_int_lq: + { + \__unravel_get_next: + \__unravel_gtl_if_head_is_definable:NF \l__unravel_head_gtl + { + \tl_set:Nx \l__unravel_head_tl + { \__unravel_token_to_char:N \l__unravel_head_token } + } + \tl_set:Nx \l__unravel_tmpa_tl + { \int_eval:n { \exp_after:wN ` \l__unravel_head_tl } } + \__unravel_prev_input_silent:V \l__unravel_tmpa_tl + \__unravel_print_action:x + { ` \gtl_to_str:N \l__unravel_head_gtl = \l__unravel_tmpa_tl } + \__unravel_skip_optional_space: + } +\cs_new_protected:Npn \__unravel_scan_int_explicit:n #1 + { + \if_int_compare:w \c_one + < #1 1 \exp_after:wN \exp_not:N \l__unravel_head_tl \exp_stop_f: + \exp_after:wN \use_i:nn + \else: + \exp_after:wN \use_ii:nn + \fi: + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_next: + \__unravel_scan_int_explicit:n {#1} + } + { + \token_if_eq_catcode:NNF \l__unravel_head_token \c_space_token + { \__unravel_back_input: } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_normal_dimen: + { \__unravel_scan_dimen:NN \c_false_bool \c_false_bool } +\cs_new_protected:Npn \__unravel_scan_dimen:NN #1#2 + { + \__unravel_scan_signs: + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int < { \__unravel_tex_use:n { min_internal } } + { \__unravel_scan_dimen_char:NN #1#2 } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_internal } } + { \__unravel_scan_dimen_char:NN #1#2 } + { + \bool_if:NTF #1 + { + \__unravel_scan_something_internal:n { 3 } + \int_case:nnF \g__unravel_val_level_int + { + { 0 } { \__unravel_scan_dim_unit:NN #1 #2 } + { 3 } { } + } + { + \msg_error:nn { unravel } { incompatible-units } + % ^^A todo: error recovery + } + } + { + \__unravel_scan_something_internal:n { 2 } + \int_case:nnF \g__unravel_val_level_int + { + { 0 } { \__unravel_scan_dim_unit:NN #1#2 } + { 3 } % ^^A todo: error recovery + { \msg_error:nn { unravel } { incompatible-units } } + } + { } + } + } + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_prev_input_silent:V \l__unravel_head_tl + } +\cs_new_protected:Npn \__unravel_scan_dimen_char:NN #1#2 + { + \tl_if_eq:NNT \l__unravel_head_tl \c__unravel_comma_tl + { \tl_set_eq:NN \l__unravel_head_tl \c__unravel_point_tl } + \tl_if_eq:NNTF \l__unravel_head_tl \c__unravel_point_tl + { + \__unravel_prev_input:n { . } + \__unravel_scan_decimal_loop: + } + { + \tl_if_in:nVTF { 0123456789 } \l__unravel_head_tl + { + \__unravel_back_input: + \__unravel_scan_int: + \tl_if_eq:NNT \l__unravel_head_tl \c__unravel_comma_tl + { \tl_set_eq:NN \l__unravel_head_tl \c__unravel_point_tl } + \tl_if_eq:NNT \l__unravel_head_tl \c__unravel_point_tl + { + \__unravel_input_gpop:N \l__unravel_tmpb_gtl + \__unravel_prev_input:n { . } + \__unravel_scan_decimal_loop: + } + } + { + \__unravel_back_input: + \__unravel_scan_int: + } + } + \__unravel_scan_dim_unit:NN #1#2 + } +\cs_new_protected:Npn \__unravel_scan_dim_unit:NN #1#2 + { + \bool_if:NT #2 + { + \__unravel_scan_keyword:nT { fF iI lL } + { + \__unravel_scan_inf_unit_loop: + \__unravel_break:w + } + } + \__unravel_get_x_non_blank: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int < { \__unravel_tex_use:n { min_internal } } + { \__unravel_back_input: } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_internal } } + { \__unravel_back_input: } + { + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \bool_if:NTF #1 + { \__unravel_scan_something_internal:n { 3 } } + { \__unravel_scan_something_internal:n { 2 } } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_set:Nx \l__unravel_tmpa_tl + { + \bool_if:NTF #1 \muskip_eval:n \skip_eval:n + { + \l__unravel_tmpa_tl + \bool_if:NTF #1 \etex_muexpr:D \etex_glueexpr:D + \l__unravel_head_tl + } + } + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_break:w + } + } + \bool_if:NT #1 + { + \__unravel_scan_keyword:nT { mM uU } { \__unravel_break:w } + \msg_error:nn { unravel } { missing-mudim } + \__unravel_break:w + } + \__unravel_scan_keyword:nT { eE mM } { \__unravel_break:w } + \__unravel_scan_keyword:nT { eE xX } { \__unravel_break:w } + \__unravel_scan_keyword:nT { pP xX } { \__unravel_break:w } + \__unravel_scan_keyword:n { tT rR uU eE } + \__unravel_scan_keyword:nT { pP tT } { \__unravel_break:w } + \__unravel_scan_keyword:nT { iI nN } { \__unravel_break:w } + \__unravel_scan_keyword:nT { pP cC } { \__unravel_break:w } + \__unravel_scan_keyword:nT { cC mM } { \__unravel_break:w } + \__unravel_scan_keyword:nT { mM mM } { \__unravel_break:w } + \__unravel_scan_keyword:nT { bB pP } { \__unravel_break:w } + \__unravel_scan_keyword:nT { dD dD } { \__unravel_break:w } + \__unravel_scan_keyword:nT { cC cC } { \__unravel_break:w } + \__unravel_scan_keyword:nT { nN dD } { \__unravel_break:w } + \__unravel_scan_keyword:nT { nN cC } { \__unravel_break:w } + \__unravel_scan_keyword:nT { sS pP } { \__unravel_break:w } + \__unravel_break_point: + } +\cs_new_protected_nopar:Npn \__unravel_scan_inf_unit_loop: + { \__unravel_scan_keyword:nT { lL } { \__unravel_scan_inf_unit_loop: } } +\cs_new_protected_nopar:Npn \__unravel_scan_decimal_loop: + { + \__unravel_get_x_next: + \tl_if_empty:NTF \l__unravel_head_tl + { \use_ii:nn } + { \tl_if_in:nVTF { 0123456789 } \l__unravel_head_tl } + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_decimal_loop: + } + { + \token_if_eq_catcode:NNF \l__unravel_head_token \c_space_token + { \__unravel_back_input: } + \__unravel_prev_input_silent:n { ~ } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_normal_glue: + { \__unravel_scan_glue:n { 2 } } +\cs_new_protected_nopar:Npn \__unravel_scan_mu_glue: + { \__unravel_scan_glue:n { 3 } } +\cs_new_protected:Npn \__unravel_scan_glue:n #1 + { + \int_compare:nNnTF {#1} = { 2 } + { \__unravel_scan_glue_aux:nN {#1} \c_false_bool } + { \__unravel_scan_glue_aux:nN {#1} \c_true_bool } + } +\cs_new_protected:Npn \__unravel_scan_glue_aux:nN #1#2 + { + \__unravel_scan_signs: + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int < { \__unravel_tex_use:n { min_internal } } + { \__unravel_back_input: \__unravel_scan_dimen:NN #2 \c_false_bool } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_internal } } + { + \__unravel_back_input: + \__unravel_scan_dimen:NN #2 \c_false_bool + } + { + \__unravel_scan_something_internal:n {#1} + \int_case:nnF \g__unravel_val_level_int + { + { 0 } { \__unravel_scan_dimen:NN #2 \c_false_bool } + { 1 } { \bool_if:NT #2 { \msg_error: } } % ^^A todo: ?? + } + { + \int_compare:nNnF \g__unravel_val_level_int = {#1} + { \msg_error:nn { unravel } { incompatible-units } } + \__unravel_break:w + } + } + } + \__unravel_scan_keyword:nT { pP lL uU sS } + { \__unravel_scan_dimen:NN #2 \c_true_bool } + \__unravel_scan_keyword:nT { mM iI nN uU sS } + { \__unravel_scan_dimen:NN #2 \c_true_bool } + \__unravel_break_point: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_prev_input_silent:V \l__unravel_head_tl + } +\cs_new_protected_nopar:Npn \__unravel_scan_file_name: + { + \bool_gset_true:N \g__unravel_name_in_progress_bool + \__unravel_get_x_non_blank: + \__unravel_scan_file_name_loop: + \bool_gset_false:N \g__unravel_name_in_progress_bool + \__unravel_prev_input_silent:n { ~ } + } +\cs_new_protected_nopar:Npn \__unravel_scan_file_name_loop: + { + \__unravel_gtl_if_head_is_definable:NTF \l__unravel_head_gtl + { \__unravel_back_input: } + { + \tl_set:Nx \l__unravel_tmpa_tl + { \__unravel_token_to_char:N \l__unravel_head_token } + \tl_if_eq:NNF \l__unravel_tmpa_tl \c_space_tl + { + \__unravel_prev_input_silent:V \l__unravel_tmpa_tl + \__unravel_get_x_next: + \__unravel_scan_file_name_loop: + } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_r_token: + { + \bool_do_while:nn + { \tl_if_eq_p:NN \l__unravel_head_tl \c_space_tl } + { \__unravel_get_next: } + \__unravel_gtl_if_head_is_definable:NF \l__unravel_head_gtl + { + \msg_error:nn { unravel } { missing-cs } + \__unravel_back_input: + \tl_set:Nn \l__unravel_head_tl { \__unravel_inaccessible:w } + } + \__unravel_prev_input_silent:V \l__unravel_head_tl + \tl_set_eq:NN \l__unravel_defined_tl \l__unravel_head_tl + } +\cs_new_protected:Npn \__unravel_scan_toks_to_str: + { + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_scan_toks:NN \c_false_bool \c_true_bool + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_prev_input_silent:x + { { \exp_after:wN \tl_to_str:n \l__unravel_tmpa_tl } } + } +\cs_new_protected:Npn \__unravel_scan_toks:NN #1#2 + { + \bool_if:NT #1 { \__unravel_scan_param: } + \__unravel_scan_left_brace: + \bool_if:NTF #2 + { \__unravel_scan_group_x:N #1 } + { \__unravel_scan_group_n:N #1 } + } +\cs_new_protected_nopar:Npn \__unravel_scan_param: + { + \tl_clear:N \l__unravel_tmpa_tl + \__unravel_scan_param_aux: + \tl_put_right:NV \l__unravel_defining_tl \l__unravel_tmpa_tl + \__unravel_prev_input_silent:V \l__unravel_tmpa_tl + } +\cs_new_protected_nopar:Npn \__unravel_scan_param_aux: + { + \__unravel_get_next: + \tl_concat:NNN \l__unravel_tmpa_tl + \l__unravel_tmpa_tl \l__unravel_head_tl + \tl_if_empty:NTF \l__unravel_head_tl + { \__unravel_back_input: } { \__unravel_scan_param_aux: } + } +\cs_new_protected:Npn \__unravel_scan_group_n:N #1 + { + \__unravel_back_input: + \__unravel_input_gpop_item:NF \l__unravel_head_tl + { + \msg_error:nn { unravel } { runaway-text } + \__unravel_exit:w + } + \tl_set:Nx \l__unravel_head_tl { { \exp_not:V \l__unravel_head_tl } } + \bool_if:NT #1 + { \tl_put_right:NV \l__unravel_defining_tl \l__unravel_head_tl } + \__unravel_prev_input_silent:V \l__unravel_head_tl + } +\cs_new_protected:Npn \__unravel_scan_group_x:N #1 + { + \__unravel_input_gpop_tl:N \l__unravel_head_tl + \__unravel_back_input:V \l__unravel_head_tl + \bool_if:NTF #1 + { + \__unravel_prev_input_silent:V \c_left_brace_str + \tl_put_right:Nn \l__unravel_defining_tl { { \if_false: } \fi: } + \__unravel_scan_group_xdef:n { 1 } + } + { + \seq_gput_right:NV \g__unravel_prev_input_seq \c_empty_gtl + \__unravel_prev_input_gtl:N \l__unravel_head_gtl + \__unravel_scan_group_x:n { 1 } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpb_gtl + \__unravel_prev_input_silent:x + { \gtl_left_tl:N \l__unravel_tmpb_gtl } + } + } +\cs_new_protected:Npn \__unravel_scan_group_xdef:n #1 + { + \__unravel_get_token_x:N \c_true_bool + \tl_if_empty:NTF \l__unravel_head_tl + { + \gtl_if_head_is_group_begin:NTF \l__unravel_head_gtl + { + \__unravel_prev_input_silent:V \c_left_brace_str + \tl_put_right:Nn \l__unravel_defining_tl { { \if_false: } \fi: } + \__unravel_scan_group_xdef:f { \int_eval:n { #1 + 1 } } + } + { + \__unravel_prev_input_silent:V \c_right_brace_str + \tl_put_right:Nn \l__unravel_defining_tl { \if_false: { \fi: } } + \int_compare:nNnF {#1} = \c_one + { \__unravel_scan_group_xdef:f { \int_eval:n { #1 - 1 } } } + } + } + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \tl_put_right:Nx \l__unravel_defining_tl + { \exp_not:N \exp_not:N \exp_not:V \l__unravel_head_tl } + \__unravel_scan_group_xdef:n {#1} + } + } +\cs_generate_variant:Nn \__unravel_scan_group_xdef:n { f } +\cs_new_protected:Npn \__unravel_scan_group_x:n #1 + { + \__unravel_get_token_x:N \c_false_bool + \__unravel_prev_input_gtl:N \l__unravel_head_gtl + \tl_if_empty:NTF \l__unravel_head_tl + { + \gtl_if_head_is_group_begin:NTF \l__unravel_head_gtl + { \__unravel_scan_group_x:f { \int_eval:n { #1 + 1 } } } + { + \int_compare:nNnF {#1} = \c_one + { \__unravel_scan_group_x:f { \int_eval:n { #1 - 1 } } } + } + } + { \__unravel_scan_group_x:n {#1} } + } +\cs_generate_variant:Nn \__unravel_scan_group_x:n { f } +\cs_new_protected:Npn \__unravel_get_token_x:N #1 + { + \__unravel_get_next: + \__unravel_token_if_protected:NF \l__unravel_head_token + { + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { the } } + { + \__unravel_get_the: + \bool_if:NTF #1 + { + \tl_put_right:NV \l__unravel_defining_tl \l__unravel_head_tl + \__unravel_prev_input:V \l__unravel_head_tl + } + { + \gtl_set:Nx \l__unravel_tmpb_gtl { \l__unravel_head_tl } + \__unravel_prev_input_gtl:N \l__unravel_tmpb_gtl + \__unravel_print_action: + } + } + { \__unravel_expand: } + \__unravel_get_token_x:N #1 + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_alt_rule: + { + \__unravel_scan_keyword:nTF { wWiIdDtThH } + { + \__unravel_scan_normal_dimen: + \__unravel_scan_alt_rule: + } + { + \__unravel_scan_keyword:nTF { hHeEiIgGhHtT } + { + \__unravel_scan_normal_dimen: + \__unravel_scan_alt_rule: + } + { + \__unravel_scan_keyword:nT { dDeEpPtThH } + { + \__unravel_scan_normal_dimen: + \__unravel_scan_alt_rule: + } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_spec: + { + \__unravel_scan_keyword:nTF { tT oO } { \__unravel_scan_normal_dimen: } + { + \__unravel_scan_keyword:nT { sS pP rR eE aA dD } + { \__unravel_scan_normal_dimen: } + } + \__unravel_scan_left_brace: + } +\cs_new_protected:Npn \__unravel_do_box:N #1 + { + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { make_box } } + { \__unravel_do_begin_box:N #1 } + { + \bool_if:NTF #1 + { + \__unravel_cs_case:NnF \l__unravel_head_token + { + \tex_hrule:D { \__unravel_do_leaders_rule: } + \tex_vrule:D { \__unravel_do_leaders_rule: } + } + { \__unravel_do_box_error: } + } + { \__unravel_do_box_error: } + } + } +\cs_new_protected_nopar:Npn \__unravel_do_box_error: + { + \__unravel_back_input: + \msg_error:nn { unravel } { missing-box } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\cs_new_protected:Npn \__unravel_do_begin_box:N #1 + { + \__unravel_prev_input:V \l__unravel_head_tl + \int_case:nnTF \l__unravel_head_char_int + { + { 0 } { \__unravel_scan_int: } % box + { 1 } { \__unravel_scan_int: } % copy + { 2 } { } % lastbox + { 3 } % vsplit + { + \__unravel_scan_int: + \__unravel_scan_keyword:nF { tT oO } + { + \msg_error:nn { unravel } { missing-to } + \__unravel_prev_input:n { to } + } + \__unravel_scan_normal_dimen: + } + } + { \__unravel_do_simple_box:N #1 } + { \__unravel_do_box_explicit:N #1 } + } +\cs_new_protected:Npn \__unravel_do_simple_box:N #1 + { + \bool_if:NTF #1 { \__unravel_do_leaders_fetch_skip: } + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \gtl_put_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } + } +\cs_new_protected_nopar:Npn \__unravel_do_leaders_fetch_skip: + { + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnTF \l__unravel_head_cmd_int + = { \__unravel_tex_use:n { \mode_if_vertical:TF { vskip } { hskip } } } + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_put_left:NV \l__unravel_head_tl \l__unravel_tmpa_tl + \__unravel_do_append_glue: + } + { + \__unravel_back_input: + \msg_error:nn { unravel } { improper-leaders } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } + } +\cs_new_protected:Npn \__unravel_do_box_explicit:N #1 + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_hbox:D + { \__unravel_box_hook:N \tex_everyhbox:D } + { \__unravel_box_hook:N \tex_everyvbox:D } + % ^^A todo: TeX calls |normal_paragraph| here. + \__unravel_scan_spec: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_set_action_text:x + { \tl_to_str:N \l__unravel_head_tl \iow_char:N \{ } + \seq_push:Nx \l__unravel_leaders_box_seq + { \bool_if:NTF #1 { \mode_if_vertical:TF { v } { h } } { Z } } + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \gtl_gconcat:NNN \g__unravel_output_gtl + \g__unravel_output_gtl \c_group_begin_gtl + \tl_use:N \l__unravel_head_tl + \c_group_begin_token \__unravel_box_hook_end: + } +\cs_new_protected:Npn \__unravel_box_hook:N #1 + { + \tl_set:NV \l__unravel_tmpa_tl #1 + \str_if_eq_x:nnF + { \tl_head:N \l__unravel_tmpa_tl } { \exp_not:N \__unravel_box_hook:w } + { + \exp_args:Nx #1 + { + \exp_not:n { \__unravel_box_hook:w \prg_do_nothing: } + \exp_not:V #1 + } + } + \cs_gset_protected:Npn \__unravel_box_hook:w ##1 \__unravel_box_hook_end: + { + \exp_args:No #1 {##1} + \cs_gset_eq:NN \__unravel_box_hook:w \prg_do_nothing: + \__unravel_print_action: + \__unravel_back_input:o {##1} + \__unravel_set_action_text:x + { \token_to_meaning:N #1 \tl_to_str:o {##1} } + \tl_if_empty:oF {##1} { \__unravel_print_action: } + } + } +\cs_new_eq:NN \__unravel_box_hook:w \prg_do_nothing: +\cs_new_eq:NN \__unravel_box_hook_end: \prg_do_nothing: +\cs_new_protected_nopar:Npn \__unravel_do_leaders_rule: + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_alt_rule: + \__unravel_do_leaders_fetch_skip: + } +\prg_new_protected_conditional:Npnn \__unravel_charcode_if_safe:n #1 { TF } + { + \bool_if:nTF + { + \int_compare_p:n { #1 = `! } + || \int_compare_p:n { `' <= #1 <= `[ } + || \int_compare_p:n { #1 = `] } + || \int_compare_p:n { ` ` <= #1 <= `z } + } + { \prg_return_true: } + { \prg_return_false: } + } +\group_begin: + \char_set_catcode_other:n { 0 } + \cs_new_protected:Npn \__unravel_char:n #1 + { + \tex_char:D #1 \scan_stop: + \__unravel_charcode_if_safe:nTF {#1} + { + \group_begin: + \char_set_lccode:nn { 0 } {#1} + \tex_lowercase:D + { \group_end: \tl_set:Nn \l__unravel_tmpa_tl { ^^@ } } + } + { + \tl_set:Nx \l__unravel_tmpa_tl + { \exp_not:N \char \int_eval:n {#1} ~ } + } + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_tmpa_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_tmpa_tl } + } +\group_end: +\cs_generate_variant:Nn \__unravel_char:n { V , x } +\group_begin: + \char_set_catcode_other:n { 0 } + \cs_new_protected:Npn \__unravel_char_in_mmode:n #1 + { + \int_compare:nNnTF { \tex_mathcode:D #1 } = { "8000 } + { % math active + \group_begin: + \char_set_lccode:nn { 0 } { \l__unravel_tmpa_tl } + \tex_lowercase:D + { \group_end: \gtl_set:Nn \l__unravel_head_gtl { ^^@ } } + \__unravel_back_input: + } + { \__unravel_char:n {#1} } + } +\group_end: +\cs_generate_variant:Nn \__unravel_char_in_mmode:n { V , x } +\cs_new_protected:Npn \__unravel_mathchar:n #1 + { + \tex_mathchar:D #1 \scan_stop: + \tl_set:Nx \l__unravel_tmpa_tl + { \exp_not:N \mathchar \int_eval:n {#1} ~ } + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_tmpa_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_tmpa_tl } + } +\cs_generate_variant:Nn \__unravel_mathchar:n { x } +\cs_new_protected:Npn \__unravel_new_graf:N #1 + { + \tl_set:NV \l__unravel_tmpa_tl \tex_everypar:D + \tex_everypar:D { } + \bool_if:NTF #1 { \tex_indent:D } { \tex_noindent:D } + \exp_args:NV \tex_everypar:D \l__unravel_tmpa_tl + \__unravel_back_input:V \l__unravel_tmpa_tl + \__unravel_print_action:x + { + \g__unravel_action_text_str \c_space_tl : ~ + \token_to_str:N \everypar = { \tl_to_str:N \l__unravel_tmpa_tl } + } + } +\cs_new_protected_nopar:Npn \__unravel_end_graf: + { \mode_if_horizontal:T { \__unravel_normal_paragraph: } } +\cs_new_protected_nopar:Npn \__unravel_normal_paragraph: + { + \tex_par:D + \gtl_gput_right:Nn \g__unravel_output_gtl { \par } + \__unravel_print_action:x { Paragraph~end. } + } +\cs_new_protected_nopar:Npn \__unravel_build_page: + { + } +\cs_new_protected_nopar:Npn \__unravel_handle_left_brace: + { + \int_case:nnF \etex_currentgrouptype:D + { + { 1 } { \__unravel_end_simple_group: } % simple + { 2 } { \__unravel_end_box_group: } % hbox + { 3 } { \__unravel_end_box_group: } % adjusted_hbox + { 4 } { \__unravel_end_graf: \__unravel_end_box_group: } % vbox + { 5 } { \__unravel_end_graf: \__unravel_end_box_group: } % vtop + { 6 } { \__unravel_end_align_group: } % align + { 7 } { \__unravel_end_no_align_group: } % no_align + { 8 } { \__unravel_end_output_group: } % output + { 9 } { \__unravel_end_math_group: } % math + { 10 } { \__unravel_end_disc_group: } % disc + { 11 } { \__unravel_end_graf: \__unravel_end_simple_group: } % insert + { 12 } { \__unravel_end_graf: \__unravel_end_simple_group: } % vcenter + { 13 } { \__unravel_end_math_choice_group: } % math_choice + } + { % bottom_level, semi_simple, math_shift, math_left + \__unravel_back_input: + \l__unravel_head_token + \__unravel_print_action: + } + } +\cs_new_protected_nopar:Npn \__unravel_end_simple_group: + { + \l__unravel_head_token + \gtl_gconcat:NNN \g__unravel_output_gtl + \g__unravel_output_gtl \c_group_end_gtl + \__unravel_print_action: + } +\cs_new_protected_nopar:Npn \__unravel_end_box_group: + { + \seq_pop:NN \l__unravel_leaders_box_seq \l__unravel_tmpa_tl + \str_if_eq_x:nnTF \l__unravel_tmpa_tl { Z } + { \__unravel_end_simple_group: } + { + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnTF \l__unravel_head_cmd_int + = { \__unravel_tex_use:n { \l__unravel_tmpa_tl skip } } + { + \tl_put_left:Nn \l__unravel_head_tl { \c_group_end_token } + \__unravel_do_append_glue: + } + { + \__unravel_back_input: + \c_group_end_token \group_begin: \group_end: + \__unravel_print_action: + } + } + } +\cs_new_protected_nopar:Npn \__unravel_off_save: + { + \int_compare:nNnTF \etex_currentgrouptype:D = { 0 } + { % bottom-level + \msg_error:nnx { unravel } { extra-close } + { \token_to_meaning:N \l__unravel_head_token } + } + { + \__unravel_back_input: + \int_case:nnF \etex_currentgrouptype:D + { + { 14 } % semi_simple_group + { \gtl_set:Nn \l__unravel_head_gtl { \group_end: } } + { 15 } % math_shift_group + { \gtl_set:Nn \l__unravel_head_gtl { $ } } % $ + { 16 } % math_left_group + { \gtl_set:Nn \l__unravel_head_gtl { \tex_right:D . } } + } + { \gtl_set_eq:NN \l__unravel_head_gtl \c_group_end_gtl } + \__unravel_back_input: + \msg_error:nnx { unravel } { off-save } + { \gtl_to_str:N \l__unravel_head_gtl } + } + } +\cs_new_protected:Npn \__unravel_mode_math:n #1 + { \mode_if_math:TF {#1} { \__unravel_insert_dollar_error: } } +\cs_new_protected:Npn \__unravel_mode_non_math:n #1 + { \mode_if_math:TF { \__unravel_insert_dollar_error: } {#1} } +\cs_new_protected:Npn \__unravel_mode_vertical:n #1 + { + \mode_if_math:TF + { \__unravel_insert_dollar_error: } + { \mode_if_horizontal:TF { \__unravel_head_for_vmode: } {#1} } + } +\cs_new_protected:Npn \__unravel_mode_non_vertical:n #1 + { + \mode_if_vertical:TF + { \__unravel_back_input: \__unravel_new_graf:N \c_true_bool } + {#1} + } +\cs_new_protected_nopar:Npn \__unravel_head_for_vmode: + { + \mode_if_inner:TF + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_hrule:D + { + \msg_error:nn { unravel } { hrule-bad-mode } + \__unravel_print_action: + } + { \__unravel_off_save: } + } + { + \__unravel_back_input: + \gtl_set:Nn \l__unravel_head_gtl { \par } + \__unravel_back_input: + } + } +\cs_new_protected_nopar:Npn \__unravel_do_step: + { + \__unravel_set_action_text: + \bool_if:NT \l__unravel_debug_bool + { \iow_term:x { Cmd:~\int_use:N \l__unravel_head_cmd_int } } + \cs_if_exist_use:cF + { __unravel_cmd_ \int_use:N \l__unravel_head_cmd_int : } + { \msg_error:nnx { unravel } { internal } { unknown-command } } + } +\__unravel_new_tex_cmd:nn { relax } % 0 + { \__unravel_print_action: } +\__unravel_new_tex_cmd:nn { begin-group_char } % 1 + { + \gtl_gconcat:NNN \g__unravel_output_gtl + \g__unravel_output_gtl \c_group_begin_gtl + \__unravel_print_action: + \l__unravel_head_token + } +\__unravel_new_tex_cmd:nn { end-group_char } % 2 + { \__unravel_handle_left_brace: } +\__unravel_new_tex_cmd:nn { math_char } % 3 + { + \__unravel_mode_non_vertical:n + { + \mode_if_math:TF + { + \int_compare:nNnTF + \etex_currentgrouplevel:D = { 15 } % math_shift_group + { \__unravel_after_math: } + { \__unravel_off_save: } + } + { + \__unravel_get_next: + \token_if_eq_catcode:NNTF + \l__unravel_head_token \c_math_toggle_token + { + \mode_if_inner:TF + { \__unravel_back_input: \__unravel_goto_inner_math: } + { \__unravel_goto_display_math: } + } + { \__unravel_back_input: \__unravel_goto_inner_math: } + } + } + } +\__unravel_new_tex_cmd:nn { alignment_char } % 4 + { \l__unravel_head_token \__unravel_print_action: } +\__unravel_new_tex_cmd:nn { car_ret } % 5 + { \l__unravel_head_token \__unravel_print_action: } +\__unravel_new_tex_cmd:nn { macro_char } % 6 + { \l__unravel_head_token \__unravel_print_action: } +\__unravel_new_tex_cmd:nn { superscript_char } % 7 + { \__unravel_mode_math:n { \__unravel_sub_sup: } } +\__unravel_new_tex_cmd:nn { subscript_char } % 8 + { \__unravel_mode_math:n { \__unravel_sub_sup: } } +\cs_new_protected_nopar:Npn \__unravel_sub_sup: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_math: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { endv } % 9 + { \msg_error:nn { unravel } { not-implemented } { alignments } } +\__unravel_new_tex_cmd:nn { blank_char } % 10 + { + \mode_if_horizontal:T + { + \gtl_gput_right:Nn \g__unravel_output_gtl { ~ } + \l__unravel_head_token + } + \__unravel_print_action: + } +\__unravel_new_tex_cmd:nn { the_char } % 11 + { + \__unravel_mode_non_vertical:n + { + \tl_set:Nx \l__unravel_tmpa_tl + { ` \__unravel_token_to_char:N \l__unravel_head_token } + \mode_if_math:TF + { \__unravel_char_in_mmode:V \l__unravel_tmpa_tl } + { \__unravel_char:V \l__unravel_tmpa_tl } + } + } +\__unravel_new_eq_tex_cmd:nn { other_char } { the_char } % 12 +\__unravel_new_tex_cmd:nn { par_end } % 13 + { + \__unravel_mode_non_math:n + { + \mode_if_vertical:TF + { \__unravel_normal_paragraph: } + { + % if align_state<0 then off_save; + \__unravel_end_graf: + \mode_if_vertical:T + { \mode_if_inner:F { \__unravel_build_page: } } + } + } + } +\__unravel_new_tex_cmd:nn { stop } % 14 + { + \__unravel_mode_vertical:n + { + \mode_if_inner:TF + { \__unravel_forbidden_case: } + { + % ^^A todo: unless its_all_over + \int_gdecr:N \g__unravel_ends_int + \int_compare:nNnTF \g__unravel_ends_int > \c_zero + { + \__unravel_back_input: + \__unravel_back_input:n + { + \tex_hbox:D to \tex_hsize:D { } + \tex_vfill:D + \tex_penalty:D - '10000000000 ~ + } + \__unravel_build_page: + \__unravel_print_action:x { End~everything! } + } + { + \__unravel_print_outcome: + \l__unravel_head_token + } + } + } + } +\__unravel_new_tex_cmd:nn { delim_num } % 15 + { + \__unravel_mode_math:n + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } + } +\__unravel_new_tex_cmd:nn { char_num } % 16 + { + \__unravel_mode_non_vertical:n + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \mode_if_math:TF + { \__unravel_char_in_mmode:x { \tl_tail:N \l__unravel_head_tl } } + { \__unravel_char:x { \tl_tail:N \l__unravel_head_tl } } + } + } +\__unravel_new_tex_cmd:nn { math_char_num } % 17 + { + \__unravel_mode_math:n + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_mathchar:x { \tl_tail:N \l__unravel_head_tl } + } + } +\__unravel_new_tex_cmd:nn { mark } % 18 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \int_compare:nNnF \l__unravel_head_char_int = \c_zero + { \__unravel_scan_int: } + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_scan_toks:NN \c_false_bool \c_true_bool + \seq_gpop_right:Nn \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x + { \tl_to_str:N \l__unravel_head_tl \tl_to_str:N \l__unravel_tmpa_tl } + \tl_put_right:Nx \l__unravel_head_tl + { { \exp_not:N \exp_not:n \exp_not:V \l__unravel_tmpa_tl } } + \tl_use:N \l__unravel_head_tl + } +\__unravel_new_tex_cmd:nn { xray } % 19 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \int_case:nnF \l__unravel_head_char_int + { + { 0 } + { % show + \__unravel_get_next: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \gtl_head_do:NN \l__unravel_head_gtl \l__unravel_tmpa_tl + } + { 2 } + { % showthe + \__unravel_get_x_next: + \__unravel_scan_something_internal:n { 5 } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \exp_args:Nx \etex_showtokens:D + { \tl_tail:N \l__unravel_head_tl } + } + } + { % no operand for showlists, showgroups, showifs + \int_compare:nNnT \l__unravel_head_char_int = \c_one % showbox + { \__unravel_scan_int: } + \int_compare:nNnT \l__unravel_head_char_int = \c_five % showtokens + { \__unravel_scan_toks:NN \c_false_bool \c_false_bool } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + } + } +\__unravel_new_tex_cmd:nn { make_box } % 20 + { + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_back_input: + \__unravel_do_box:N \c_false_bool + } +\cs_new_protected_nopar:Npn \__unravel_do_move: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_normal_dimen: + \__unravel_do_box:N \c_false_bool + } +\__unravel_new_tex_cmd:nn { hmove } % 21 + { + \mode_if_vertical:TF + { \__unravel_do_move: } { \__unravel_forbidden_case: } + } +\__unravel_new_tex_cmd:nn { vmove } % 22 + { + \mode_if_vertical:TF + { \__unravel_forbidden_case: } { \__unravel_do_move: } + } +\cs_new_protected_nopar:Npn \__unravel_do_unpackage: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { un_hbox } % 23 + { \__unravel_mode_non_vertical:n { \__unravel_do_unpackage: } } +\__unravel_new_tex_cmd:nn { un_vbox } % 24 + { + \__unravel_mode_vertical:n + { + \int_compare:nNnTF \l__unravel_head_char_int > { 1 } + { \l__unravel_head_token \__unravel_print_action: } + { \__unravel_do_unpackage: } + } + } +\__unravel_new_tex_cmd:nn { remove_item } % 25 + { \l__unravel_head_token \__unravel_print_action: } +\cs_new_protected_nopar:Npn \__unravel_do_append_glue: + { + \int_compare:nNnTF \l__unravel_head_char_int < { 4 } + { \tl_use:N \l__unravel_head_tl \__unravel_print_action: } + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \exp_args:Nf \__unravel_scan_glue:n + { \int_eval:n { \l__unravel_head_char_int - 2 } } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } + } +\__unravel_new_tex_cmd:nn { hskip } % 26 + { \__unravel_mode_non_vertical:n { \__unravel_do_append_glue: } } +\__unravel_new_tex_cmd:nn { vskip } % 27 + { \__unravel_mode_vertical:n { \__unravel_do_append_glue: } } +\__unravel_new_tex_cmd:nn { mskip } % 28 + { \__unravel_mode_math:n { \__unravel_do_append_glue: } } +\cs_new_protected_nopar:Npn \__unravel_do_append_kern: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_kern:D + { \__unravel_scan_dimen:NN \c_true_bool \c_false_bool } + { \__unravel_scan_dimen:NN \c_false_bool \c_false_bool } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { kern } % 29 + { \__unravel_do_append_kern: } +\__unravel_new_tex_cmd:nn { mkern } % 30 + { \__unravel_mode_math:n { \__unravel_do_append_kern: } } +\__unravel_new_tex_cmd:nn { leader_ship } % 31 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_do_box:N \c_true_bool + } +\__unravel_new_tex_cmd:nn { halign } % 32 + { \msg_fatal:nnx { unravel } { not-implemented } { halign } } +\__unravel_new_tex_cmd:nn { valign } % 33 + { \msg_fatal:nnx { unravel } { not-implemented } { valign } } +\__unravel_new_tex_cmd:nn { no_align } % 34 + { \msg_fatal:nnx { unravel } { not-implemented } { noalign } } +\__unravel_new_tex_cmd:nn { vrule } % 35 + { \__unravel_mode_non_vertical:n { \__unravel_do_rule: } } +\__unravel_new_tex_cmd:nn { hrule } % 36 + { \__unravel_mode_vertical:n { \__unravel_do_rule: } } +\cs_new_protected_nopar:Npn \__unravel_do_rule: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_alt_rule: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { insert } % 37 + { \__unravel_begin_insert_or_adjust: } +\__unravel_new_tex_cmd:nn { vadjust } % 38 + { + \mode_if_vertical:TF + { \__unravel_forbidden_case: } { \__unravel_begin_insert_or_adjust: } + } +\__unravel_new_tex_cmd:nn { ignore_spaces } % 39 + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_ignorespaces:D + { + \__unravel_get_x_non_blank: + \__unravel_set_cmd: + \__unravel_do_step: + } + { \msg_error:nn { unravel } { not-implemented } { pdfprimitive } } + } +\__unravel_new_tex_cmd:nn { after_assignment } % 40 + { + \tl_set_eq:NN \l__unravel_tmpa_tl \l__unravel_head_tl + \__unravel_get_next: + \gtl_gset_eq:NN \g__unravel_after_assignment_gtl \l__unravel_head_gtl + \__unravel_print_action:x + { + Afterassignment:~\tl_to_str:N \l__unravel_tmpa_tl + \gtl_to_str:N \l__unravel_head_gtl + } + } +\__unravel_new_tex_cmd:nn { after_group } % 41 + { \msg_error:nnx { unravel } { not-implemented } { aftergroup } } +\__unravel_new_tex_cmd:nn { break_penalty } % 42 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { start_par } % 43 + { + \mode_if_vertical:TF + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_noindent:D + { \__unravel_new_graf:N \c_false_bool } + { \__unravel_new_graf:N \c_true_bool } + } + { + \int_compare:nNnT \l__unravel_head_char_int = { 1 } % indent + { + \tex_hbox:D width \tex_parindent:D { } + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + } + \__unravel_print_action: + } + } +\__unravel_new_tex_cmd:nn { ital_corr } % 44 + { + \mode_if_vertical:TF { \__unravel_forbidden_case: } + { \l__unravel_head_token \__unravel_print_action: } + } +\cs_new_protected_nopar:Npn \__unravel_do_accent: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \__unravel_do_assignments: + \bool_if:nTF + { + \token_if_eq_catcode_p:NN + \l__unravel_head_token \c_catcode_letter_token + || + \token_if_eq_catcode_p:NN + \l__unravel_head_token \c_catcode_other_token + || + \int_compare_p:nNn + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { char_given } } + } + { \__unravel_prev_input:V \l__unravel_head_tl } + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_char:D + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_int: + } + { \__unravel_break:w } + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + \__unravel_break_point: + } +\cs_new_protected_nopar:Npn \__unravel_do_math_accent: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \__unravel_scan_math: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { accent } % 45 + { + \__unravel_mode_non_vertical:n + { + \mode_if_math:TF + { \__unravel_do_math_accent: } { \__unravel_do_accent: } + } + } +\__unravel_new_tex_cmd:nn { math_accent } % 46 + { \__unravel_mode_math:n { \__unravel_do_math_accent: } } +\__unravel_new_tex_cmd:nn { discretionary } % 47 + { \msg_error:nnx { unravel } { not-implemented } { discretionary } } +\__unravel_new_tex_cmd:nn { eq_no } % 48 + { \msg_error:nnx { unravel } { not-implemented } { eqno } } +\__unravel_new_tex_cmd:nn { left_right } % 49 + { \msg_error:nnx { unravel } { not-implemented } { left/right } } +\__unravel_new_tex_cmd:nn { math_comp } % 50 + { \msg_error:nnx { unravel } { not-implemented } { math~comp } } +\__unravel_new_tex_cmd:nn { limit_switch } % 51 + { \msg_error:nnx { unravel } { not-implemented } { limits } } +\__unravel_new_tex_cmd:nn { above } % 52 + { \msg_error:nnx { unravel } { not-implemented } { above } } +\__unravel_new_tex_cmd:nn { math_style } % 53 + { \msg_error:nnx { unravel } { not-implemented } { math~style } } +\__unravel_new_tex_cmd:nn { math_choice } % 54 + { \msg_error:nnx { unravel } { not-implemented } { math~choice } } +\__unravel_new_tex_cmd:nn { non_script } % 55 + { \msg_error:nnx { unravel } { not-implemented } { non~script } } +\__unravel_new_tex_cmd:nn { vcenter } % 56 + { \msg_error:nnx { unravel } { not-implemented } { vcenter } } +\__unravel_new_tex_cmd:nn { case_shift } % 57 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \exp_after:wN \__unravel_case_shift:Nn \l__unravel_tmpa_tl + } +\cs_new_protected:Npn \__unravel_case_shift:Nn #1#2 + { + #1 { \__unravel_back_input:n {#2} } + \__unravel_print_action:x + { \token_to_meaning:N #1 ~ \tl_to_str:n { {#2} } } + } +\__unravel_new_tex_cmd:nn { message } % 58 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_toks_to_str: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { extension } % 59 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_extension_operands: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { in_stream } % 60 + { + \seq_put_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_openin:D + { + \__unravel_scan_int: + \__unravel_scan_optional_equals: + \__unravel_scan_file_name: + } + { \__unravel_scan_int: } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_cmd:nn { begin_group } % 61 + { + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \__unravel_print_action: + \l__unravel_head_token + } +\__unravel_new_tex_cmd:nn { end_group } % 62 + { + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \__unravel_print_action: + \l__unravel_head_token + } +\__unravel_new_tex_cmd:nn { omit } % 63 + { \msg_error:nn { unravel } { not-implemented } { omit } } +\__unravel_new_tex_cmd:nn { ex_space } % 64 + { + \__unravel_mode_non_vertical:n + { \l__unravel_head_token \__unravel_print_action: } + } +\__unravel_new_tex_cmd:nn { no_boundary } % 65 + { + \__unravel_mode_non_vertical:n + { \l__unravel_head_token \__unravel_print_action: } + } +\__unravel_new_tex_cmd:nn { radical } % 66 + { + \__unravel_mode_math:n + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \__unravel_scan_math: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } + } +\__unravel_new_tex_cmd:nn { end_cs_name } % 67 + { \l__unravel_head_token \__unravel_print_action: } +\__unravel_new_tex_cmd:nn { char_given } % 68 + { + \__unravel_mode_non_vertical:n + { + \mode_if_math:TF + { \__unravel_char_in_mmode:V \l__unravel_head_char_int } + { \__unravel_char:V \l__unravel_head_char_int } + } + } +\__unravel_new_tex_cmd:nn { math_given } % 69 + { + \__unravel_mode_math:n + { \__unravel_mathchar:x { \int_use:N \l__unravel_head_char_int } } + } +\__unravel_new_tex_cmd:nn { last_item } % 70 + { \__unravel_forbidden_case: } +\cs_new_protected_nopar:Npn \__unravel_scan_extension_operands: + { + \int_case:nnF \l__unravel_head_char_int + { + { 0 } % openout + { + \__unravel_scan_int: + \__unravel_scan_optional_equals: + \__unravel_scan_file_name: + } + { 1 } % write + { + \__unravel_scan_int: + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + } + { 2 } % closeout + { \__unravel_scan_int: } + { 3 } % special + { \__unravel_scan_toks_to_str: } + { 4 } % immediate + { \__unravel_scan_immediate_operands: } + { 5 } % setlanguage + { + \mode_if_horizontal:TF + { \__unravel_scan_int: } + { \msg_error:nn { unravel } { invalid-mode } } + } + { 6 } % pdfliteral + { + \__unravel_scan_keyword:nF { dD iI rR eE cC tT } + { \__unravel_scan_keyword:n { pP aA gG eE } } + \__unravel_scan_pdf_ext_toks: + } + { 7 } % pdfobj + { + \__unravel_scan_keyword:nTF + { rR eE sS eE rR vV eE oO bB jJ nN uU mM } + { \__unravel_skip_optional_space: } + { + \__unravel_scan_keyword:nF { uU sS eE oO bB jJ nN uU mM } + { \__unravel_scan_int: } + \__unravel_scan_keyword:nT { sS tT rR eE aA mM } + { + \__unravel_scan_keyword:nT { aA tT tT rR } + { \__unravel_scan_pdf_ext_toks: } + } + \__unravel_scan_keyword:n { fF iI lL eE } + \__unravel_scan_pdf_ext_toks: + } + } + { 8 } % pdfrefobj + { \__unravel_scan_int: } + { 9 } % pdfxform + { + \__unravel_scan_keyword:nT { aA tT tT rR } + { \__unravel_scan_pdf_ext_toks: } + \__unravel_scan_keyword:nTF { rR eE sS oO uU rR cC eE sS } + { \__unravel_scan_pdf_ext_toks: } + \__unravel_scan_int: + } + { 10 } % pdfrefxform + { \__unravel_scan_int: } + { 11 } % pdfximage + { \__unravel_scan_image: } + { 12 } % pdfrefximage + { \__unravel_scan_int: } + { 13 } % pdfannot + { + \__unravel_scan_keyword:nTF + { rR eE sS eE rR vV eE oO bB jJ nN uU mM } + { \__unravel_scan_optional_space: } + { + \__unravel_scan_keyword:nT { uU sS eE oO bB jJ nN uU mM } + { \__unravel_scan_int: } + \__unravel_scan_alt_rule: + \__unravel_scan_pdf_ext_toks: + } + } + { 14 } % pdfstartlink + { + \mode_if_vertical:TF + { \msg_error:nn { unravel } { invalid-mode } } + { + \__unravel_scan_rule_attr: + \__unravel_scan_action: + } + } + { 15 } % pdfendlink + { + \mode_if_vertical:T + { \msg_error:nn { unravel } { invalid-mode } } + } + { 16 } % pdfoutline + { + \__unravel_scan_keyword:nT { aA tT tT rR } + { \__unravel_scan_pdf_ext_toks: } + \__unravel_scan_action: + \__unravel_scan_keyword:nT { cC oO uU nN tT } + { \__unravel_scan_int: } + \__unravel_scan_pdf_ext_toks: + } + { 17 } % pdfdest + { \__unravel_scan_pdfdest_operands: } + { 18 } % pdfthread + { \__unravel_scan_rule_attr: \__unravel_scan_thread_id: } + { 19 } % pdfstartthread + { \__unravel_scan_rule_attr: \__unravel_scan_thread_id: } + { 20 } % pdfendthread + { } + { 21 } % pdfsavepos + { } + { 22 } % pdfinfo + { \__unravel_scan_pdf_ext_toks: } + { 23 } % pdfcatalog + { + \__unravel_scan_pdf_ext_toks: + \__unravel_scan_keyword:n { oO pP eE nN aA cC tT iI oO nN } + { \__unravel_scan_action: } + } + { 24 } % pdfnames + { \__unravel_scan_pdf_ext_toks: } + { 25 } % pdffontattr + { + \__unravel_scan_font_ident: + \__unravel_scan_pdf_ext_toks: + } + { 26 } % pdfincludechars + { + \__unravel_scan_font_ident: + \__unravel_scan_pdf_ext_toks: + } + { 27 } % pdfmapfile + { \__unravel_scan_pdf_ext_toks: } + { 28 } % pdfmapline + { \__unravel_scan_pdf_ext_toks: } + { 29 } % pdftrailer + { \__unravel_scan_pdf_ext_toks: } + { 30 } % pdfresettimer + { } + { 31 } % pdffontexpand + { + \__unravel_scan_font_ident: + \__unravel_scan_optional_equals: + \__unravel_scan_int: + \__unravel_scan_int: + \__unravel_scan_int: + \__unravel_scan_keyword:nT { aAuUtToOeExXpPaAnNdD } + { \__unravel_skip_optional_space: } + } + { 32 } % pdfsetrandomseed + { \__unravel_scan_int: } + { 33 } % pdfsnaprefpoint + { } + { 34 } % pdfsnapy + { \__unravel_scan_normal_glue: } + { 35 } % pdfsnapycomp + { \__unravel_scan_int: } + { 36 } % pdfglyphtounicode + { + \__unravel_scan_pdf_ext_toks: + \__unravel_scan_pdf_ext_toks: + } + { 37 } % pdfcolorstack + { \__unravel_scan_pdfcolorstack_operands: } + { 38 } % pdfsetmatrix + { \__unravel_scan_pdf_ext_toks: } + { 39 } % pdfsave + { } + { 40 } % pdfrestore + { } + { 41 } % pdfnobuiltintounicode + { \__unravel_scan_font_ident: } + } + { } % no other cases. + } +\cs_new_protected_nopar:Npn \__unravel_scan_pdfcolorstack_operands: + { + \__unravel_scan_int: + \__unravel_scan_keyword:nF { sSeEtT } + { + \__unravel_scan_keyword:nF { pPuUsShH } + { + \__unravel_scan_keyword:nF { pPoOpP } + { + \__unravel_scan_keyword:nF { cCuUrRrReEnNtT } + { + \msg_error:nn { unravel } + { color-stack-action-missing } + } + } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_rule_attr: + { + \__unravel_scan_alt_rule: + \__unravel_scan_keyword:nT { aA tT tT rR } + { \__unravel_scan_pdf_ext_toks: } + } +\cs_new_protected_nopar:Npn \__unravel_scan_action: + { + \__unravel_scan_keyword:nTF { uUsSeErR } + { \__unravel_scan_pdf_ext_toks: } + { + \__unravel_scan_keyword:nF { gGoOtToO } + { + \__unravel_scan_keyword:nF { tThHrReEaAdD } + { \msg_error:nn { unravel } { action-type-missing } } + } + } + \__unravel_scan_keyword:nT { fFiIlLeE } + { \__unravel_scan_pdf_ext_toks: } + \__unravel_scan_keyword:nTF { pPaAgGeE } + { + \__unravel_scan_int: + \__unravel_scan_pdf_ext_toks: + } + { + \__unravel_scan_keyword:nTF { nNaAmMeE } + { \__unravel_scan_pdf_ext_toks: } + { + \__unravel_scan_keyword:nTF { nNuUmM } + { \__unravel_scan_int: } + { \msg_error:nn { unravel } { identifier-type-missing } } + } + } + \__unravel_scan_keyword:nTF { nNeEwWwWiInNdDoOwW } + { \__unravel_skip_optional_space: } + { + \__unravel_scan_keyword:nT { nNoOnNeEwWwWiInNdDoOwW } + { \__unravel_skip_optional_space: } + } + } +\cs_new_protected_nopar:Npn \__unravel_scan_image: + { + \__unravel_scan_rule_attr: + \__unravel_scan_keyword:nTF { nNaAmMeEdD } + { \__unravel_scan_pdf_ext_toks: } + { + \__unravel_scan_keyword:nT { pPaAgGeE } + { \__unravel_scan_int: } + } + \__unravel_scan_keyword:nT { cCoOlLoOrRsSpPaAcCeE } + { \__unravel_scan_int: } + \__unravel_scan_pdf_ext_toks: + } +\cs_new_protected_nopar:Npn \__unravel_scan_immediate_operands: + { + \__unravel_get_x_next: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { extension } } + { + \int_compare:nNnTF + \l__unravel_head_char_int < { 3 } % openout, write, closeout + { \__unravel_scan_immediate_operands_aux: } + { + \int_case:nnF \l__unravel_head_char_int + { + { 7 } { \__unravel_scan_extension_operands_aux: } % pdfobj + { 9 } { \__unravel_scan_extension_operands_aux: } % pdfxform + { 11 } { \__unravel_scan_extension_operands_aux: } %pdfximage + } + { \__unravel_scan_immediate_operands_bad: } + } + } + { \__unravel_scan_immediate_operands_bad: } + } +\cs_new_protected_nopar:Npn \__unravel_scan_immediate_operands_aux: + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_extension_operands: + } +\cs_new_protected_nopar:Npn \__unravel_scan_immediate_operands_bad: + { + \__unravel_back_input: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl ignored } + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + } + +\cs_new_protected_nopar:Npn \__unravel_scan_pdfdest_operands: + { + \__unravel_scan_keyword:nTF { nNuUmM } + { \__unravel_scan_int: } + { + \__unravel_scan_keyword:nTF { nNaAmMeE } + { \__unravel_scan_pdf_ext_toks: } + { \msg_error:nn { unravel } { identifier-type-missing } } + } + \__unravel_scan_keyword:nTF { xXyYzZ } + { + \__unravel_scan_keyword:nT { zZoOoOmM } + { \__unravel_scan_int: } + } + { + \__unravel_scan_keyword:nF { fFiItTbBhH } + { + \__unravel_scan_keyword:nF { fFiItTbBvV } + { + \__unravel_scan_keyword:nF { fFiItTbB } + { + \__unravel_scan_keyword:nF { fFiItThHhH } + { + \__unravel_scan_keyword:nF { fFiItTvV } + { + \__unravel_scan_keyword:nTF + { fFiItTrR } + { + \__unravel_skip_optional_space: + \__unravel_scan_alt_rule: + \use_none:n + } + { + \__unravel_scan_keyword:nF + { fFiItT } + { + \msg_error:nn { unravel } + { + destination-type-missing + } + } + } + } + } + } + } + } + } + \__unravel_skip_optional_space: + } +\cs_set_protected_nopar:Npn \__unravel_tmp:w + { + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_prefixed_command: + } +\int_step_inline:nnnn + { \__unravel_tex_use:n { max_non_prefixed_command } + 1 } + { 1 } + { \__unravel_tex_use:n { max_command } } + { \cs_new_eq:cN { __unravel_cmd_#1: } \__unravel_tmp:w } +\cs_new_protected_nopar:Npn \__unravel_prefixed_command: + { + \int_while_do:nNnn + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { prefix } } + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnF \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_non_prefixed_command } } + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \msg_error:nnxx { unravel } { erroneous-prefixes } + { \tl_to_str:N \l__unravel_tmpa_tl } + { \tl_to_str:N l__unravel_head_tl } + \__unravel_back_input: + \__unravel_omit_after_assignment:w + } + } + % ^^A todo: Discard non-\global prefixes if they are irrelevant + % ^^A todo: Adjust for the setting of \globaldefs + \cs_if_exist_use:cF + { __unravel_prefixed_ \int_use:N \l__unravel_head_cmd_int : } + { + \msg_error:nnx { unravel } { internal } { prefixed } + \__unravel_omit_after_assignment:w + } + \__unravel_after_assignment: + } +\cs_new_protected_nopar:Npn \__unravel_after_assignment: + { + \__unravel_back_input_gtl:N \g__unravel_after_assignment_gtl + \gtl_gclear:N \g__unravel_after_assignment_gtl + } +\cs_new_protected_nopar:Npn \__unravel_omit_after_assignment:w + #1 \__unravel_after_assignment: { } +\cs_new_protected:Npn \__unravel_prefixed_new:nn #1#2 + { + \cs_new_protected_nopar:cpn + { __unravel_prefixed_ \__unravel_tex_use:n {#1} : } {#2} + } +\cs_new_protected:Npn \__unravel_assign_token:n #1 + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + #1 + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_assigned_token: + } +\cs_new_protected_nopar:Npn \__unravel_assign_register: + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_assigned_register: + } +\cs_new_protected:Npn \__unravel_assign_value:nn #1#2 + { + \tl_if_empty:nF {#1} + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + #1 + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + } + \__unravel_prev_input:V \l__unravel_head_tl + \tl_set_eq:NN \l__unravel_defined_tl \l__unravel_head_tl + \__unravel_scan_optional_equals: + #2 + \__unravel_assign_register: + } +\__unravel_prefixed_new:nn { toks_register } % 71 + { + \int_compare:nNnT \l__unravel_head_char_int = \c_zero + { % \toks + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + } + \__unravel_assign_toks: + } +\__unravel_prefixed_new:nn { assign_toks } % 72 + { \__unravel_assign_toks: } +\cs_new_protected_nopar:Npn \__unravel_assign_toks: + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \__unravel_print_action: + \tl_set_eq:NN \l__unravel_defined_tl \l__unravel_head_tl + \__unravel_scan_optional_equals: + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { toks_register } } + { + \__unravel_prev_input:V \l__unravel_head_tl + \int_compare:nNnT \l__unravel_head_char_int = \c_zero + { \__unravel_scan_int: } + } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { assign_toks } } + { \__unravel_prev_input:V \l__unravel_head_tl } + { + \__unravel_back_input: + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + } + } + \__unravel_assign_register: + } +\__unravel_prefixed_new:nn { assign_int } % 73 + { \__unravel_assign_value:nn { } { \__unravel_scan_int: } } +\__unravel_prefixed_new:nn { assign_dimen } % 74 + { \__unravel_assign_value:nn { } { \__unravel_scan_normal_dimen: } } +\__unravel_prefixed_new:nn { assign_glue } % 75 + { \__unravel_assign_value:nn { } { \__unravel_scan_normal_glue: } } +\__unravel_prefixed_new:nn { assign_mu_glue } % 76 + { \__unravel_assign_value:nn { } { \__unravel_scan_mu_glue: } } +\__unravel_prefixed_new:nn { assign_font_dimen } % 77 + { + \__unravel_assign_value:nn + { \__unravel_scan_int: \__unravel_scan_font_ident: } + { \__unravel_scan_normal_dimen: } + } +\__unravel_prefixed_new:nn { assign_font_int } % 78 + { + \__unravel_assign_value:nn + { \__unravel_scan_font_int: } { \__unravel_scan_int: } + } +\__unravel_prefixed_new:nn { set_aux } % 79 + { % prevdepth = 1, spacefactor = 0 + \int_compare:nNnTF \l__unravel_head_char_int = \c_one + { \__unravel_assign_value:nn { } { \__unravel_scan_normal_dimen: } } + { \__unravel_assign_value:nn { } { \__unravel_scan_int: } } + } +\__unravel_prefixed_new:nn { set_prev_graf } % 80 + { \__unravel_assign_value:nn { } { \__unravel_scan_int: } } +\__unravel_prefixed_new:nn { set_page_dimen } % 81 + { \__unravel_assign_value:nn { } { \__unravel_scan_normal_dimen: } } +\__unravel_prefixed_new:nn { set_page_int } % 82 + { \__unravel_assign_value:nn { } { \__unravel_scan_int: } } +\__unravel_prefixed_new:nn { set_box_dimen } % 83 + { + \__unravel_assign_value:nn + { \__unravel_scan_int: } { \__unravel_scan_normal_dimen: } + } +\__unravel_prefixed_new:nn { set_shape } % 84 + { + \__unravel_assign_value:nn { \__unravel_scan_int: } + { + \prg_replicate:nn + { + \tl_if_head_eq_meaning:VNT + \l__unravel_defined_tl \tex_parshape:D { \c_two * } + \tl_tail:N \l__unravel_defined_tl + } + { \__unravel_scan_int: } + } + } +\__unravel_prefixed_new:nn { def_code } % 85 + { + \__unravel_assign_value:nn + { \__unravel_scan_int: } { \__unravel_scan_int: } + } +\__unravel_prefixed_new:nn { def_family } % 86 + { + \__unravel_assign_value:nn + { \__unravel_scan_int: } { \__unravel_scan_font_ident: } + } +\__unravel_prefixed_new:nn { set_font } % 87 + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_put_left:NV \l__unravel_head_tl \l__unravel_tmpa_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \gtl_gput_right:NV \g__unravel_output_gtl \l__unravel_head_tl + \__unravel_print_action: + } +\__unravel_prefixed_new:nn { def_font } % 88 + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \__unravel_set_action_text:x { \tl_to_str:N \l__unravel_head_tl } + \__unravel_scan_r_token: + \__unravel_print_action:x + { \g__unravel_action_text_str \tl_to_str:N \l__unravel_defined_tl } + \__unravel_scan_optional_equals: + \__unravel_scan_file_name: + \bool_gset_true:N \g__unravel_name_in_progress_bool + \__unravel_scan_keyword:nTF { aAtT } + { \__unravel_scan_normal_dimen: } + { + \__unravel_scan_keyword:nT { sS cC aA lL eE dD } + { \__unravel_scan_int: } + } + \bool_gset_false:N \g__unravel_name_in_progress_bool + \__unravel_assign_token:n { } + } +\__unravel_prefixed_new:nn { let } % 94 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_let:D + { % |let| + \__unravel_scan_r_token: + \seq_get_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_tmpa_tl } + \__unravel_get_next: + \bool_while_do:nn + { \token_if_eq_catcode_p:NN \l__unravel_head_token \c_space_token } + { \__unravel_get_next: } + \tl_if_eq:NNT \l__unravel_head_tl \c__unravel_eq_tl + { \__unravel_get_next: } + \token_if_eq_catcode:NNT \l__unravel_head_token \c_space_token + { \__unravel_get_next: } + } + { % |futurelet| + \__unravel_scan_r_token: + \seq_get_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_tmpa_tl } + \__unravel_get_next: + \gtl_set_eq:NN \l__unravel_tmpb_gtl \l__unravel_head_gtl + \__unravel_get_next: + \__unravel_back_input: + \gtl_set_eq:NN \l__unravel_head_gtl \l__unravel_tmpb_gtl + \__unravel_back_input: + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_put_right:Nn \l__unravel_tmpa_tl { = ~ \l__unravel_head_token } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \use:x + { + \exp_not:V \l__unravel_head_tl + \tex_let:D \tl_tail:N \l__unravel_tmpa_tl + } + \__unravel_print_assigned_token: + } +\__unravel_prefixed_new:nn { shorthand_def } % 95 + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \tl_set:Nx \l__unravel_prev_action_tl + { \tl_to_str:N \l__unravel_head_tl } + \__unravel_scan_r_token: + \__unravel_print_action:x + { \l__unravel_prev_action_tl \tl_to_str:N \l__unravel_defined_tl } + \exp_after:wN \cs_set_eq:NN \l__unravel_defined_tl \scan_stop: + \__unravel_scan_optional_equals: + \__unravel_scan_int: + \__unravel_assign_token:n { } + } +\__unravel_prefixed_new:nn { read_to_cs } % 96 + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + \__unravel_scan_int: + \__unravel_scan_keyword:nF { tToO } + { + \msg_error:nn { unravel } { missing-to } + \__unravel_prev_input:n { to } + } + \__unravel_scan_r_token: + \__unravel_assign_token:n { } + } +\__unravel_prefixed_new:nn { def } % 97 + { + \seq_get_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_set:NV \l__unravel_defining_tl \l__unravel_tmpa_tl + \tl_put_right:NV \l__unravel_defining_tl \l__unravel_head_tl + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \int_compare:nNnTF \l__unravel_head_char_int < \c_two + { % def/gdef + \__unravel_scan_r_token: + \tl_put_right:NV \l__unravel_defining_tl \l__unravel_defined_tl + \__unravel_scan_toks:NN \c_true_bool \c_false_bool + } + { % edef/xdef + \__unravel_scan_r_token: + \tl_put_right:NV \l__unravel_defining_tl \l__unravel_defined_tl + \__unravel_scan_toks:NN \c_true_bool \c_true_bool + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_assign_token:n + { \tl_set_eq:NN \l__unravel_head_tl \l__unravel_defining_tl } + } +\__unravel_prefixed_new:nn { set_box } % 98 + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_int: + \__unravel_scan_optional_equals: + \bool_if:NTF \g__unravel_set_box_allowed_bool + { \__unravel_do_box:N \c_false_bool } + { + \msg_error:nn { unravel } { improper-setbox } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_omit_after_assignment:w + } + } +\__unravel_prefixed_new:nn { hyph_data } % 99 + { + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + \__unravel_assign_token:n { } + } +\__unravel_prefixed_new:nn { set_interaction } % 100 + { + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_put_right:NV \l__unravel_head_tl \l__unravel_tmpa_tl + \tl_use:N \l__unravel_head_tl \scan_stop: + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_prefixed_new:nn { letterspace_font } % 101 + { + % ^^A todo... + % new_letterspaced_font(a); + \msg_error:nnx { unravel } { not-implemented } { letterspace-font } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_omit_after_assignment:w + } +\__unravel_prefixed_new:nn { pdf_copy_font } % 102 + { + % ^^A todo... + % make_font_copy(a); + \msg_error:nnx { unravel } { not-implemented } { pdf-copy-font } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_omit_after_assignment:w + } +\__unravel_prefixed_new:nn { register } % 89 + { \__unravel_do_register:N \c_zero } +\__unravel_prefixed_new:nn { advance } % 90 + { \__unravel_do_operation:N \c_one } +\__unravel_prefixed_new:nn { multiply } % 91 + { \__unravel_do_operation:N \c_two } +\__unravel_prefixed_new:nn { divide } % 92 + { \__unravel_do_operation:N \c_three } +\cs_new_protected:Npn \__unravel_do_operation:N #1 + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \__unravel_print_action: + \__unravel_get_x_next: + \__unravel_set_cmd: + \int_compare:nNnTF + \l__unravel_head_cmd_int > { \__unravel_tex_use:n { assign_mu_glue } } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { register } } + { \__unravel_do_register:N #1 } + { \__unravel_do_operation_fail:w } + } + { + \int_compare:nNnTF + \l__unravel_head_cmd_int < { \__unravel_tex_use:n { assign_int } } + { \__unravel_do_operation_fail:w } + { + \__unravel_prev_input:V \l__unravel_head_tl + \exp_args:NNf \__unravel_do_register_set:Nn #1 + { + \int_eval:n + { + \l__unravel_head_cmd_int + - \__unravel_tex_use:n { assign_toks } + } + } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_do_operation_fail:w + { + \msg_error:nn { unravel } { after-advance } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_omit_after_assignment:w + } +\cs_new_protected:Npn \__unravel_do_register:N #1 + { + \exp_args:NNV \__unravel_do_register_aux:Nn #1 + \l__unravel_head_char_int + } +\cs_new_protected:Npn \__unravel_do_register_aux:Nn #1#2 + { + \int_compare:nNnTF { \tl_tail:n {#2} } = \c_zero + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_scan_int: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_prev_input_silent:V \l__unravel_head_tl + } + { + \__unravel_prev_input_silent:V \l__unravel_head_tl + \__unravel_print_action: + } + \tl_set_eq:NN \l__unravel_defined_tl \l__unravel_head_tl + \exp_args:NNf \__unravel_do_register_set:Nn #1 + { \int_eval:n { #2 / 1 000 000 } } + } +\cs_new_protected:Npn \__unravel_do_register_set:Nn #1#2 + { + \int_compare:nNnTF {#1} = \c_zero + { % truly register command + \__unravel_scan_optional_equals: + } + { % \advance, \multiply, \divide + \__unravel_scan_keyword:nF { bByY } + { \__unravel_prev_input_silent:n { by } } + } + \int_compare:nNnTF {#1} < \c_two + { + \int_case:nnF {#2} + { + { 1 } { \__unravel_scan_int: } % count + { 2 } { \__unravel_scan_normal_dimen: } % dim + { 3 } { \__unravel_scan_normal_glue: } % glue + { 4 } { \__unravel_scan_mu_glue: } % muglue + } + { \msg_error:nnx { unravel } { internal } { do-reg=#2 } } + } + { \__unravel_scan_int: } + \__unravel_assign_register: + } +\cs_new_protected_nopar:Npn \__unravel_do_assignments: + { + \__unravel_get_x_non_relax: + \__unravel_set_cmd: + \int_compare:nNnT + \l__unravel_head_cmd_int + > { \__unravel_tex_use:n { max_non_prefixed_command } } + { + \bool_gset_false:N \g__unravel_set_box_allowed_bool + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_prefixed_command: + \bool_gset_true:N \g__unravel_set_box_allowed_bool + \__unravel_do_assignments: + } + } +\__unravel_new_tex_expandable:nn { undefined_cs } % 103 + { \tl_use:N \l__unravel_head_tl \__unravel_print_action: } +\__unravel_new_tex_expandable:nn { expand_after } % 104 + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_expandafter:D + { \__unravel_expandafter: } { \__unravel_unless: } + } +\cs_new_protected_nopar:Npn \__unravel_expandafter: + { + \gtl_set_eq:NN \l__unravel_tmpb_gtl \l__unravel_head_gtl + \__unravel_get_next: + \gtl_concat:NNN \l__unravel_head_gtl + \l__unravel_tmpb_gtl \l__unravel_head_gtl + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_gtl + \__unravel_print_action:x { \gtl_to_str:N \l__unravel_head_gtl } + \__unravel_get_next: + \__unravel_token_if_expandable:NTF \l__unravel_head_token + { \__unravel_expand: } + { \__unravel_back_input: } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_gtl + \__unravel_set_action_text:x + { back_input: ~ \gtl_to_str:N \l__unravel_head_gtl } + \gtl_pop_left:N \l__unravel_head_gtl + \__unravel_back_input: + \__unravel_print_action: + } +\cs_new_protected_nopar:Npn \__unravel_unless: + { + \__unravel_get_token: + \int_compare:nNnTF + \l__unravel_head_cmd_int = { \__unravel_tex_use:n { if_test } } + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_ifcase:D + { \__unravel_unless_bad: } + { + \tl_put_left:Nn \l__unravel_head_tl { \reverse_if:N } + % \int_add:Nn \l__unravel_head_char_int { 32 } + \__unravel_expand_nonmacro: + } + } + { \__unravel_unless_bad: } + } +\cs_new_protected_nopar:Npn \__unravel_unless_bad: + { + \msg_error:nn { unravel } { bad-unless } + \__unravel_back_input: + } +\__unravel_new_tex_expandable:nn { no_expand } % 105 + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \tex_noexpand:D + { \__unravel_noexpand: } + { \__unravel_pdfprimitive: } + } +\cs_new_protected_nopar:Npn \__unravel_noexpand: + { + \__unravel_get_token: + \__unravel_back_input: + \__unravel_token_if_expandable:NT \l__unravel_head_token + { + \cs_gset_protected_nopar:Npx \__unravel_get_next: + { + \cs_gset_protected_nopar:Npn \__unravel_get_next: + { \exp_not:o { \__unravel_get_next: } } + \exp_not:o { \__unravel_get_next: } + \exp_not:n { \cs_set_eq:NN \l__unravel_head_token \tex_relax:D } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_pdfprimitive: + { \msg_error:nnx { unravel } { not-implemented } { pdfprimitive } } +\__unravel_new_tex_expandable:nn { input } % 106 + { + \int_case:nnF \l__unravel_head_char_int + { + { 1 } { \__unravel_print_action: } % \endinput + { 2 } { \__unravel_scantokens: } % \scantokens + } + { % 0=\input + \bool_if:NTF \g__unravel_name_in_progress_bool + { \__unravel_insert_relax: } { \__unravel_input: } + } + } +\cs_new_protected_nopar:Npn \__unravel_scantokens: + { + \seq_gput_right:Nn \g__unravel_prev_input_seq { } + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \tl_set_rescan:Nno \l__unravel_head_tl { } \l__unravel_tmpa_tl + \__unravel_back_input:V \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_tmpa_tl } + } +\cs_new_protected_nopar:Npn \__unravel_input: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_scan_file_name: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_set:Nx \l__unravel_tmpa_tl { \tl_tail:N \l__unravel_head_tl } + \__unravel_tl_gset_input:Nno \g__unravel_tmpc_tl { } \l__unravel_tmpa_tl + \__unravel_back_input:V \g__unravel_tmpc_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\__unravel_new_tex_expandable:nn { cs_name } % 109 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_csname_loop: + \__unravel_prev_input:V \l__unravel_head_tl + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_back_input_tl_o: + } +\cs_new_protected_nopar:Npn \__unravel_csname_loop: + { + \__unravel_get_x_next: + \token_if_cs:NTF \l__unravel_head_token + { + \cs_if_eq:NNF \l__unravel_head_token \tex_endcsname:D + { + \msg_error:nn { unravel } { missing-endcsname } + \__unravel_back_input: + \tl_set:Nn \l__unravel_head_tl { \tex_endcsname:D } + } + } + { + \__unravel_prev_input_silent:x + { \__unravel_token_to_char:N \l__unravel_head_token } + \__unravel_csname_loop: + } + } +\__unravel_new_tex_expandable:nn { convert } % 110 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \int_case:nn \l__unravel_head_char_int + { + 0 \__unravel_scan_int: + 1 \__unravel_scan_int: + 2 { \__unravel_get_next: \__unravel_prev_input:V \l__unravel_head_tl } + 3 { \__unravel_get_next: \__unravel_prev_input:V \l__unravel_head_tl } + 4 \__unravel_scan_font_ident: + 8 \__unravel_scan_font_ident: + 9 \__unravel_scan_font_ident: + { 10 } \__unravel_scan_font_ident: + { 11 } \__unravel_scan_int: + { 12 } \__unravel_scan_int: + { 13 } \__unravel_scan_pdf_ext_toks: + { 14 } \__unravel_scan_pdf_ext_toks: + { 15 } \__unravel_scan_int: + { 16 } \__unravel_scan_int: + { 17 } \__unravel_scan_pdfstrcmp: + { 18 } \__unravel_scan_pdfcolorstackinit: + { 19 } \__unravel_scan_pdf_ext_toks: + { 20 } \__unravel_scan_pdf_ext_toks: + { 22 } \__unravel_scan_pdf_ext_toks: + { 23 } \__unravel_scan_pdf_ext_toks: + { 24 } + { + \__unravel_scan_keyword:n { fF iI lL eE } + \__unravel_scan_pdf_ext_toks: + } + { 25 } \__unravel_scan_pdffiledump: + { 26 } \__unravel_scan_pdfmatch: + { 27 } \__unravel_scan_int: + { 28 } \__unravel_scan_int: + { 30 } \__unravel_scan_int: + { 31 } \__unravel_scan_pdfximagebbox: + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_back_input_tl_o: + } +\cs_new_protected_nopar:Npn \__unravel_scan_pdfstrcmp: + { + \__unravel_scan_toks_to_str: + \__unravel_scan_toks_to_str: + } +\cs_new_protected_nopar:Npn \__unravel_scan_pdfximagebbox: + { \__unravel_scan_int: \__unravel_scan_int: } +\cs_new_protected_nopar:Npn \__unravel_scan_pdfcolorstackinit: + { + \__unravel_scan_keyword:nTF { pP aA gG eE } + { \bool_set_true:N \l__unravel_tmpa_bool } + { \bool_set_false:N \l__unravel_tmpb_bool } + \__unravel_scan_keyword:nF { dD iI rR eE cC tT } + { \__unravel_scan_keyword:n { pP aA gG eE } } + \__unravel_scan_toks_to_str: + } +\cs_new_protected_nopar:Npn \__unravel_scan_pdffiledump: + { + \__unravel_scan_keyword:nT { oO fF fF sS eE tT } \__unravel_scan_int: + \__unravel_scan_keyword:nT { lL eE nN gG tT hH } \__unravel_scan_int: + \__unravel_scan_pdf_ext_toks: + } +\cs_new_protected_nopar:Npn \__unravel_scan_pdfmatch: + { + \__unravel_scan_keyword:n { iI cC aA sS eE } + \__unravel_scan_keyword:nT { sS uU bB cC oO uU nN tT } + { \__unravel_scan_int: } + \__unravel_scan_pdf_ext_toks: + \__unravel_scan_pdf_ext_toks: + } +\__unravel_new_tex_expandable:nn { the } % 111 + { + \__unravel_get_the: + \tl_set:Nx \l__unravel_tmpa_tl { \exp_args:NV \exp_not:o \l__unravel_head_tl } + \__unravel_back_input:V \l__unravel_tmpa_tl + \__unravel_print_action: + } +\cs_new_protected_nopar:Npn \__unravel_get_the: + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \int_if_odd:nTF \l__unravel_head_char_int + { % \unexpanded, \detokenize + \__unravel_scan_toks:NN \c_false_bool \c_false_bool + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_set_action_text:x { \tl_to_str:N \l__unravel_head_tl } + } + { % \the + \__unravel_get_x_next: + \__unravel_scan_something_internal:n { 5 } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_set_action_text:x + { + \tl_head:N \l__unravel_head_tl + => \tl_tail:N \l__unravel_head_tl + } + \tl_set:Nx \l__unravel_head_tl + { \exp_not:N \exp_not:n { \tl_tail:N \l__unravel_head_tl } } + } + } +\__unravel_new_tex_expandable:nn { top_bot_mark } % 112 + { \__unravel_back_input_tl_o: } +\__unravel_new_tex_expandable:nn { end_template } % 117 + { + \msg_error:nn { unravel } { not-implemented } { end-template } + \__unravel_back_input_tl_o: + } +\cs_new_protected_nopar:Npn \__unravel_pass_text: + { + \__unravel_input_if_empty:TF + { \__unravel_pass_text_empty: } + { + \__unravel_input_get:N \l__unravel_tmpb_gtl + \if_true: + \if_case:w \gtl_head_do:NN \l__unravel_tmpb_gtl \c_one + \exp_after:wN \__unravel_pass_text_done:w + \fi: + \__unravel_input_gpop:N \l__unravel_tmpb_gtl + \exp_after:wN \__unravel_pass_text: + \else: + \use:c { fi: } + \int_set_eq:NN \l__unravel_if_nesting_int \c_one + \__unravel_input_gpop:N \l__unravel_tmpb_gtl + \exp_after:wN \__unravel_pass_text_nested: + \fi: + } + } +\cs_new_protected_nopar:Npn \__unravel_pass_text_done:w + { + \__unravel_get_next: + \token_if_eq_meaning:NNT \l__unravel_head_token \fi: { \if_true: } + \else: + } +\cs_new_protected_nopar:Npn \__unravel_pass_text_nested: + { + \__unravel_input_if_empty:TF + { \__unravel_pass_text_empty: } + { + \__unravel_input_get:N \l__unravel_tmpb_gtl + \if_true: + \if_true: + \gtl_head_do:NN \l__unravel_tmpb_gtl \else: + \int_decr:N \l__unravel_if_nesting_int + \use_none:nnnnn + \fi: + \use_none:nnn + \fi: + \int_incr:N \l__unravel_if_nesting_int + \fi: + \__unravel_input_gpop:N \l__unravel_tmpa_gtl + \int_compare:nNnTF \l__unravel_if_nesting_int = \c_zero + { \__unravel_pass_text: } + { \__unravel_pass_text_nested: } + } + } +\cs_new_protected_nopar:Npn \__unravel_pass_text_empty: + { + \msg_error:nn { unravel } { runaway-if } + \__unravel_exit:w + } +\cs_new_protected:Npn \__unravel_cond_push: + { + \tl_gput_left:Nx \g__unravel_if_limit_tl + { { \int_use:N \g__unravel_if_limit_int } } + \int_gincr:N \g__unravel_if_depth_int + \int_gzero:N \g__unravel_if_limit_int + } +\cs_new_protected_nopar:Npn \__unravel_cond_pop: + { + \int_gset:Nn \g__unravel_if_limit_int + { \tl_head:N \g__unravel_if_limit_tl } + \tl_gset:Nx \g__unravel_if_limit_tl + { \tl_tail:N \g__unravel_if_limit_tl } + \int_gdecr:N \g__unravel_if_depth_int + } +\cs_new_protected:Npn \__unravel_change_if_limit:nn #1#2 + { + \int_compare:nNnTF {#2} = \g__unravel_if_depth_int + { \int_gset:Nn \g__unravel_if_limit_int {#1} } + { + \tl_clear:N \l__unravel_tmpa_tl + \prg_replicate:nn { \g__unravel_if_depth_int - #2 - \c_one } + { + \tl_put_right:Nx \l__unravel_tmpa_tl + { { \tl_head:N \g__unravel_if_limit_tl } } + \tl_gset:Nx \g__unravel_if_limit_tl + { \tl_tail:N \g__unravel_if_limit_tl } + } + \tl_gset:Nx \g__unravel_if_limit_tl + { \l__unravel_tmpa_tl {#1} \tl_tail:N \g__unravel_if_limit_tl } + } + } +\__unravel_new_tex_expandable:nn { if_test } % 107 + { + \__unravel_cond_push: + \exp_args:NV \__unravel_cond_aux:n \g__unravel_if_depth_int + } +\cs_new_protected:Npn \__unravel_cond_aux:n #1 + { + \int_case:nnF \l__unravel_head_char_int + { + { 12 } { \__unravel_test_ifx:n {#1} } + { 16 } { \__unravel_test_case:n {#1} } + { 21 } { \__unravel_test_pdfprimitive:n {#1} } % ^^A todo and \unless + } + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \int_case:nn \l__unravel_head_char_int + { + { 0 } { \__unravel_test_two_chars: } % if + { 1 } { \__unravel_test_two_chars: } % ifcat + { 2 } % ifnum + { \__unravel_test_two_vals:N \__unravel_scan_int: } + { 3 } % ifdim + { \__unravel_test_two_vals:N \__unravel_scan_normal_dimen: } + { 4 } { \__unravel_scan_int: } % ifodd + % { 5 } { } % ifvmode + % { 6 } { } % ifhmode + % { 7 } { } % ifmmode + % { 8 } { } % ifinner + { 9 } { \__unravel_scan_int: } % ifvoid + { 10 } { \__unravel_scan_int: } % ifhbox + { 11 } { \__unravel_scan_int: } % ifvbox + { 13 } { \__unravel_scan_int: } % ifeof + % { 14 } { } % iftrue + % { 15 } { } % iffalse + { 17 } { \__unravel_test_ifdefined: } % ifdefined + { 18 } { \__unravel_test_ifcsname: } % ifcsname + { 19 } % iffontchar + { \__unravel_scan_font_ident: \__unravel_scan_int: } + % { 20 } { } % ifincsname % ^^A todo: something? + { 22 } % ifpdfabsnum + { \__unravel_test_two_vals:N \__unravel_scan_int: } + { 23 } % ifpdfabsdim + { \__unravel_test_two_vals:N \__unravel_scan_normal_dimen: } + } + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_set_action_text:x { \tl_to_str:N \l__unravel_head_tl } + \l__unravel_head_tl \scan_stop: + \exp_after:wN \__unravel_cond_true:n + \else: + \exp_after:wN \__unravel_cond_false:n + \fi: + {#1} + } + } +\cs_new_protected:Npn \__unravel_cond_true:n #1 + { + \__unravel_change_if_limit:nn { 3 } {#1} % wait for else/fi + \__unravel_print_action:x { \g__unravel_action_text_str = true } + } +\cs_new_protected:Npn \__unravel_cond_false:n #1 + { + \__unravel_cond_false_loop:n {#1} + \__unravel_cond_false_common: + \__unravel_print_action:x { \g__unravel_action_text_str = false } + } +\cs_new_protected:Npn \__unravel_cond_false_loop:n #1 + { + \__unravel_pass_text: + \int_compare:nNnTF \g__unravel_if_depth_int = {#1} + { + \token_if_eq_meaning:NNT \l__unravel_head_token \or: + { + \msg_error:nn { unravel } { extra-or } + \__unravel_cond_false_loop:n {#1} + } + } + { + \token_if_eq_meaning:NNT \l__unravel_head_token \fi: + { \__unravel_cond_pop: } + \__unravel_cond_false_loop:n {#1} + } + } +\cs_new_protected_nopar:Npn \__unravel_cond_false_common: + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \fi: + { \__unravel_cond_pop: } + { \int_gset:Nn \g__unravel_if_limit_int { 2 } } % wait for fi + } +\cs_new_protected:Npn \__unravel_test_two_vals:N #1 + { + #1 + \__unravel_get_x_non_blank: + \tl_if_in:nVF { < = > } \l__unravel_head_tl + { + \msg_error:nn { unravel } { missing-equals } + \__unravel_back_input: + \tl_set:Nn \l__unravel_head_tl { = } + } + \__unravel_prev_input:V \l__unravel_head_tl + #1 + } +\cs_new_protected_nopar:Npn \__unravel_test_two_chars: + { + \__unravel_test_two_chars_aux: + \__unravel_prev_input:V \l__unravel_head_tl + \__unravel_test_two_chars_aux: + \__unravel_prev_input:V \l__unravel_head_tl + } +\cs_new_protected_nopar:Npn \__unravel_test_two_chars_aux: + { + \__unravel_get_x_next: + \gtl_if_tl:NF \l__unravel_head_gtl + { + \tl_set:Nx \l__unravel_head_tl + { + \gtl_if_head_is_group_begin:NTF \l__unravel_head_gtl + { \c_group_begin_token } { \c_group_end_token } + } + } + \tl_put_left:Nn \l__unravel_head_tl { \exp_not:N } % ^^A todo: prettify. + } +\cs_new_protected:Npn \__unravel_test_ifx:n #1 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \__unravel_get_next: + \gtl_set_eq:NN \l__unravel_tmpb_gtl \l__unravel_head_gtl + \__unravel_get_next: + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_tmpa_tl + \__unravel_set_action_text:x + { + Compare:~ \tl_to_str:N \l__unravel_tmpa_tl + \gtl_to_str:N \l__unravel_tmpb_gtl + \gtl_to_str:N \l__unravel_head_gtl + } + \gtl_head_do:NN \l__unravel_tmpb_gtl \__unravel_test_ifx_aux:w + \exp_after:wN \__unravel_cond_true:n + \else: + \exp_after:wN \__unravel_cond_false:n + \fi: + {#1} + } +\cs_new_nopar:Npn \__unravel_test_ifx_aux:w + { \gtl_head_do:NN \l__unravel_head_gtl \l__unravel_tmpa_tl } +\cs_new_protected:Npn \__unravel_test_case:n #1 + { + \seq_gput_right:NV \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action: + \bool_if:NT \l__unravel_debug_bool { \iow_term:n { {\ifcase level~#1} } } + \__unravel_scan_int: + \seq_get_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \tl_set:Nx \l__unravel_head_tl { \tl_tail:N \l__unravel_head_tl } + % ^^A does text_case_aux use prev_input_seq? + \exp_args:No \__unravel_test_case_aux:nn { \l__unravel_head_tl } {#1} + \seq_gpop_right:NN \g__unravel_prev_input_seq \l__unravel_head_tl + \__unravel_print_action:x { \tl_to_str:N \l__unravel_head_tl } + } +\cs_new_protected:Npn \__unravel_test_case_aux:nn #1#2 + { + \int_compare:nNnTF {#1} = \c_zero + { \__unravel_change_if_limit:nn { 4 } {#2} } + { + \__unravel_pass_text: + \int_compare:nNnTF \g__unravel_if_depth_int = {#2} + { + \token_if_eq_meaning:NNTF \l__unravel_head_token \or: + { + \exp_args:Nf \__unravel_test_case_aux:nn + { \int_eval:n { #1 - 1 } } {#2} + } + { \__unravel_cond_false_common: } + } + { + \token_if_eq_meaning:NNT \l__unravel_head_token \fi: + { \__unravel_cond_pop: } + \__unravel_test_case_aux:nn {#1} {#2} + } + } + } +\cs_new_protected_nopar:Npn \__unravel_test_ifdefined: + { + \__unravel_input_if_empty:TF + { \__unravel_pass_text_empty: } + { + \__unravel_input_gpop:N \l__unravel_tmpb_gtl + \__unravel_set_action_text:x + { + Conditional:~ \tl_to_str:N \l__unravel_head_tl + \gtl_to_str:N \l__unravel_tmpb_gtl + } + \__unravel_prev_input:x + { + \gtl_if_tl:NTF \l__unravel_tmpb_gtl + { \gtl_head:N \l__unravel_tmpb_gtl } + { \gtl_to_str:N \l__unravel_tmpb_gtl } + } + } + } +\cs_new_protected_nopar:Npn \__unravel_test_ifcsname: + { + \__unravel_csname_loop: + \__unravel_prev_input:V \l__unravel_head_tl + } +\__unravel_new_tex_expandable:nn { fi_or_else } % 108 + { + \int_compare:nNnTF \l__unravel_head_char_int > \g__unravel_if_limit_int + { + \int_compare:nNnTF \g__unravel_if_limit_int = \c_zero + { + \int_compare:nNnTF \g__unravel_if_depth_int = \c_zero + { \msg_error:nn { unravel } { extra-fi-or-else } } + { \__unravel_insert_relax: } + } + { \msg_error:nn { unravel } { extra-fi-or-else } } + } + { + \__unravel_set_action_text: + \int_compare:nNnF \l__unravel_head_char_int = \c_two + { + \__unravel_fi_or_else_loop: + \__unravel_set_action_text:x + { + \g__unravel_action_text_str \c_space_tl + => ~ skipped ~ to ~ \tl_to_str:N \l__unravel_head_tl + } + } + % ^^A todo: in this print_action the token itself is missing. + \__unravel_print_action: + \__unravel_cond_pop: + } + } +\cs_new_protected_nopar:Npn \__unravel_fi_or_else_loop: + { + \int_compare:nNnF \l__unravel_head_char_int = \c_two + { + \__unravel_pass_text: + \__unravel_set_cmd: + \__unravel_fi_or_else_loop: + } + } +\cs_new_eq:NN \__unravel_print:n \iow_term:n +\cs_generate_variant:Nn \__unravel_print:n { x } +\cs_new_protected:Npn \__unravel_print_message:nn #1 #2 + { \iow_wrap:nnnN { #1 #2 } { #1 } { } \__unravel_print:n } +\cs_new_protected:Npn \__unravel_set_action_text:x #1 + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \str_gset:Nx \g__unravel_action_text_str {#1} + \group_end: + } +\cs_new_protected_nopar:Npn \__unravel_set_action_text: + { + \__unravel_set_action_text:x + { + \tl_to_str:N \l__unravel_head_tl + \tl_if_single_token:VT \l__unravel_head_tl + { = ~ \exp_after:wN \token_to_meaning:N \l__unravel_head_tl } + } + } +\cs_new_protected:Npn \__unravel_print_state: + { + \group_begin: + \int_set:Nn \tex_escapechar:D { 92 } + \int_compare:nNnT \g__unravel_noise_int > \c_zero + { + \exp_args:Nx \__unravel_print_state_output:n + { \gtl_to_str:N \g__unravel_output_gtl } + \seq_set_map:NNn \l__unravel_tmpa_seq \g__unravel_prev_input_seq + { \__unravel_to_str:n {##1} } + \seq_remove_all:Nn \l__unravel_tmpa_seq { } + \exp_args:Nx \__unravel_print_state_prev:n + { \seq_use:Nn \l__unravel_tmpa_seq { \\ } } + \exp_args:Nx \__unravel_print_state_input:n + { \__unravel_input_to_str: } + } + \group_end: + \__unravel_prompt: + } +\cs_new_protected:Npn \__unravel_print_state_output:n #1 + { + \tl_if_empty:nF {#1} + { + \int_set:Nn \l__unravel_print_int { \str_count:n {#1} } + \__unravel_print_message:nn { <| ~ } + { + \int_compare:nNnTF + \l__unravel_print_int > \g__unravel_max_output_int + { + ( + \int_eval:n + { + \l__unravel_print_int + - \g__unravel_max_output_int + 14 + } ~ + chars + )~ + ... + \str_substr:nnn {#1} + { \l__unravel_print_int - \g__unravel_max_output_int + 15 } + { \l__unravel_print_int } + } + {#1} + } + } + } +\cs_new_protected:Npn \__unravel_print_state_prev:n #1 + { + % \int_set:Nn \l__unravel_print_int { \str_count:n {#1} } + \__unravel_print_message:nn { || ~ } {#1} + % { + % \int_compare:nNnTF \l__unravel_print_int > \g__unravel_max_prev_int + % { + % ( + % \int_eval:n + % { \l__unravel_print_int - \g__unravel_max_prev_int + 14 } ~ + % chars + % )~ + % ... + % \str_substr:nnn {#1} + % { \l__unravel_print_int - \g__unravel_max_prev_int + 15 } + % { \l__unravel_print_int } + % } + % {#1} + % } + } +\cs_new_protected:Npn \__unravel_print_state_input:n #1 + { + \int_set:Nn \l__unravel_print_int { \str_count:n {#1} } + \__unravel_print_message:nn { |> ~ } + { + \int_compare:nNnTF \l__unravel_print_int > \g__unravel_max_input_int + { + \str_substr:nnn {#1} { 1 } { \g__unravel_max_input_int - 14 } + ...~ + ( + \int_eval:n + { \l__unravel_print_int - \g__unravel_max_input_int + 14 } ~ + chars + ) + } + {#1} + } + } +\cs_new_protected:Npn \__unravel_print_meaning: + { + \__unravel_input_if_empty:TF + { \__unravel_print_message:nn { } { Empty~input! } } + { + \__unravel_input_get:N \l__unravel_tmpb_gtl + \__unravel_print_message:nn { } + { + \gtl_head_do:NN \l__unravel_tmpb_gtl \token_to_str:N + = \gtl_head_do:NN \l__unravel_tmpb_gtl \token_to_meaning:N + } + } + } +\cs_new_protected:Npn \__unravel_print_action: + { + \int_gincr:N \g__unravel_step_int + \__unravel_print_message:nn { } + { + % \\ + [=====~ Step~ \int_use:N \g__unravel_step_int \ =====]~ + \int_compare:nNnTF + { \str_count:N \g__unravel_action_text_str } + > { \g__unravel_max_action_int } + { + \str_substr:Nnn \g__unravel_action_text_str + { 1 } { \g__unravel_max_action_int - 3 } ... + } + { \g__unravel_action_text_str } + % \\ + % \ \ < \int_use:N \g__unravel_input_int > % ^^A todo: remove + % \ < \seq_count:N \g__unravel_prev_input_seq > % ^^A todo: remove + } + \__unravel_print_state: + } +\cs_new_protected:Npn \__unravel_print_action:x #1 + { + \__unravel_set_action_text:x {#1} + \__unravel_print_action: + } +\cs_new_protected:Npn \__unravel_print_gtl_action:N #1 + { + \__unravel_print_action:x { \gtl_to_str:N #1 } + } +\cs_new_eq:NN \__unravel_print_done:x \__unravel_print_action:x +\cs_new_protected_nopar:Npn \__unravel_print_assigned_token: + { + \__unravel_after_assignment: % ^^A todo: simplify + \__unravel_print_action:x + { + Set~ \exp_after:wN \token_to_str:N \l__unravel_defined_tl + = \exp_after:wN \token_to_meaning:N \l__unravel_defined_tl + } + \__unravel_omit_after_assignment:w + } +\cs_new_protected_nopar:Npn \__unravel_print_assigned_register: + { + \__unravel_after_assignment: % ^^A todo: simplify + \__unravel_print_action:x + { + Set~ \exp_after:wN \token_to_str:N \l__unravel_defined_tl + \tl_if_single:NT \l__unravel_defined_tl + { ( \exp_after:wN \token_to_meaning:N \l__unravel_defined_tl ) } + = \exp_after:wN \tex_the:D \l__unravel_defined_tl + } + \__unravel_omit_after_assignment:w + } +\cs_new_protected_nopar:Npn \__unravel_print_welcome: + { + \__unravel_print_message:nn { } + { + \\ + ========~ Welcome~ to~ the~ unravel~ package~ ========\\ + \iow_indent:n + { + "<|"~ denotes~ the~ output~ to~ TeX's~ stomach. \\ + "||"~ denotes~ tokens~ waiting~ to~ be~ used. \\ + "|>"~ denotes~ tokens~ that~ we~ will~ act~ on. \\ + Press~<enter>~to~continue;~'h'~<enter>~for~help. \\ + } + } + \__unravel_print_state: + } +\cs_new_protected_nopar:Npn \__unravel_print_outcome: + { + % \int_gset_eq:NN \g__unravel_max_input_int \c_max_int + % \int_gset_eq:NN \g__unravel_max_prev_int \c_max_int + % \int_gset_eq:NN \g__unravel_max_output_int \c_max_int + % \__unravel_print_state: + \__unravel_print_message:nn { } { [=====~The~end!~=====] \\ } + } +\cs_new_protected_nopar:Npn \__unravel_prompt: + { + \int_gdecr:N \g__unravel_nonstop_int + \int_compare:nNnF \g__unravel_nonstop_int > \c_zero + { + \group_begin: + \int_set_eq:NN \tex_escapechar:D \c_minus_one + \int_set_eq:NN \tex_endlinechar:D \c_minus_one + \tl_use:N \g__unravel_prompt_before_tl + \tl_gclear:N \g__unravel_prompt_before_tl + \__unravel_prompt_aux: + \group_end: + } + } +\cs_new_protected_nopar:Npn \__unravel_prompt_aux: + { + \ior_get_str:Nc \g__unravel_prompt_ior { Your~input } + \exp_args:Nv \__unravel_prompt_treat:n { Your~input } + } +\cs_new_protected:Npn \__unravel_prompt_treat:n #1 + { + \tl_if_empty:nF {#1} + { + \exp_args:Nx \str_case:nnF { \tl_head:n {#1} } + { + { m } { \__unravel_print_meaning: \__unravel_prompt_aux: } + { q } + { + \int_gset_eq:NN \g__unravel_noise_int \c_minus_one + \int_gzero:N \g__unravel_nonstop_int + } + { x } + { + \group_end: + \exp_after:wN \__unravel_exit:w \__unravel_exit:w + } + { X } { \tex_batchmode:D \tex_end:D } + { s } { \__unravel_prompt_scan_int:nn {#1} + \__unravel_prompt_silent_steps:n } + { o } { \__unravel_prompt_scan_int:nn {#1} + { \int_gset:Nn \g__unravel_noise_int } } + { C } + { + \tl_gset_rescan:Nnx \g__unravel_tmpc_tl + { \ExplSyntaxOn } { \tl_tail:n {#1} } + \tl_gput_left:Nn \g__unravel_tmpc_tl + { \tl_gclear:N \g__unravel_tmpc_tl } + \group_insert_after:N \g__unravel_tmpc_tl + } + } + { \__unravel_prompt_help: } + } + } +\cs_new_protected:Npn \__unravel_prompt_scan_int:nn #1 + { + \tex_afterassignment:D \__unravel_prompt_scan_int_after:wn + \l__unravel_prompt_tmpa_int = 0 \use_none:n #1 \scan_stop: + } +\cs_new_protected:Npn \__unravel_prompt_scan_int_after:wn #1 \scan_stop: #2 + { + #2 \l__unravel_prompt_tmpa_int + \tl_if_blank:nF {#1} { \__unravel_prompt_treat:n {#1} } + } +\cs_new_protected:Npn \__unravel_prompt_help: + { + \__unravel_print:n { "m":~meaning~of~first~token } + \__unravel_print:n { "q":~semi-quiet } + \__unravel_print:n { "x":~exit~this~instance~of~unravel } + \__unravel_print:n { "X":~try~harder~to~exit } + \__unravel_print:n { "s<num>":~do~<num>~steps~silently } + \__unravel_print:n + { "o<num>":~0~=>~only~log~not~online,~1~=>~both,~-1~=>~neither.} + \__unravel_print:n { "C<code>":~run~some~code~immediately } + \__unravel_prompt_aux: + } +\cs_new_protected:Npn \__unravel_prompt_silent_steps:n #1 + { + \int_gset_eq:NN \g__unravel_noise_int \c_minus_one + \tl_gset:Nn \g__unravel_prompt_before_tl + { \int_gset_eq:NN \g__unravel_noise_int \c_one } + \int_gset:Nn \g__unravel_nonstop_int {#1} + } +\cs_new_protected:Npn \unravel #1 { \__unravel_unravel:n {#1} } +\cs_new_protected_nopar:Npn \UnravelDebug + { + \bool_set_true:N \l__unravel_debug_bool + } +\cs_new_protected:Npn \__unravel_unravel:n #1 + { + \int_gzero:N \g__unravel_step_int + \__unravel_input_gset:n {#1} + \seq_gclear:N \g__unravel_prev_input_seq + \gtl_gclear:N \g__unravel_output_gtl + \tl_gclear:N \g__unravel_if_limit_tl + \int_gzero:N \g__unravel_if_limit_int + \int_gzero:N \g__unravel_if_depth_int + \gtl_gclear:N \g__unravel_after_assignment_gtl + \bool_gset_true:N \g__unravel_set_box_allowed_bool + \bool_gset_false:N \g__unravel_name_in_progress_bool + \cs_gset_eq:NN \g__unravel_prompt_ior \c_minus_one % ^^A todo:? + \__unravel_print_welcome: + \__unravel_main_loop: + \__unravel_exit_point: + \__unravel_print_outcome: + \bool_if:nTF + { + \tl_if_empty_p:N \g__unravel_if_limit_tl + && \int_compare_p:nNn \g__unravel_if_limit_int = \c_zero + && \int_compare_p:nNn \g__unravel_if_depth_int = \c_zero + && \seq_if_empty_p:N \g__unravel_prev_input_seq + } + { \__unravel_input_if_empty:TF { } { \__unravel_bad_finish: } } + { \__unravel_bad_finish: } + \__unravel_exit_point: + } +\cs_new_protected_nopar:Npn \__unravel_bad_finish: + { + \msg_error:nnx { unravel } { internal } + { the-last-unravel-finished-badly } + } +\cs_new_protected_nopar:Npn \__unravel_main_loop: + { + \__unravel_get_x_next: + \__unravel_set_cmd: + \__unravel_do_step: + \__unravel_main_loop: + } +\msg_new:nnn { unravel } { unknown-primitive } + { Internal~error:~the~primitive~'#1'~is~not~known. } +\msg_new:nnn { unravel } { extra-fi-or-else } + { Extra~fi,~or,~or~else. } +\msg_new:nnn { unravel } { missing-lbrace } + { Missing~left~brace~inserted. } +\msg_new:nnn { unravel } { missing-dollar } + { Missing~dollar~inserted. } +\msg_new:nnn { unravel } { unknown-expandable } + { Internal~error:~the~expandable~command~'#1'~is~not~known. } +\msg_new:nnn { unravel } { missing-font-id } + { Missing~font~identifier.~\iow_char:N\\nullfont~inserted. } +\msg_new:nnn { unravel } { missing-rparen } + { Missing~right~parenthesis~inserted~for~expression. } +\msg_new:nnn { unravel } { incompatible-units } + { Mu~glue/dimen~used~as~a~normal~glue/dimen~or~vice-versa. } +\msg_new:nnn { unravel } { missing-mudim } + { Missing~mu~unit. } +\msg_new:nnn { unravel } { missing-cs } + { Missing~control~sequence.~\iow_char:N\\inaccessible~inserted. } +\msg_new:nnn { unravel } { missing-box } + { Missing~box~inserted. } +\msg_new:nnn { unravel } { missing-to } + { Missing~keyword~'to'~inserted. } +\msg_new:nnn { unravel } { improper-leaders } + { Leaders~not~followed~by~proper~glue. } +\msg_new:nnn { unravel } { extra-close } + { Extra~right~brace~or~\iow_char:N\\endgroup. } +\msg_new:nnn { unravel } { off-save } + { Something~is~wrong~with~groups. } +\msg_new:nnn { unravel } { hrule-bad-mode } + { \iow_char\\hrule~used~in~wrong~mode. } +\msg_new:nnn { unravel } { invalid-mode } + { Invalid~mode~for~this~command. } +\msg_new:nnn { unravel } { color-stack-action-missing } + { Missing~color~stack~action. } +\msg_new:nnn { unravel } { action-type-missing } + { Missing~action~type. } +\msg_new:nnn { unravel } { identifier-type-missing } + { Missing~identifier~type. } +\msg_new:nnn { unravel } { destination-type-missing } + { Missing~destination~type. } +\msg_new:nnn { unravel } { erroneous-prefixes } + { Prefixes~appplied~to~non-assignment~command. } +\msg_new:nnn { unravel } { improper-setbox } + { \iow_char:N\\setbox~while~fetching~base~of~an~accent. } +\msg_new:nnn { unravel } { after-advance } + { + Missing~register~after~\iow_char:N\\advance,~ + \iow_char:N\\multiply,~or~\iow_char:N\\divide. + } +\msg_new:nnn { unravel } { bad-unless } + { \iow_char:N\\unless~not~followed~by~conditional. } +\msg_new:nnn { unravel } { missing-endcsname } + { Missing~\iow_char:N\\endcsname~inserted. } +\msg_new:nnn { unravel } { runaway-if } + { Runaway~\iow_char:N\\if... } +\msg_new:nnn { unravel } { extra-or } + { Extra~\iow_char:N\\or. } +\msg_new:nnn { unravel } { missing-equals } + { Missing~equals~for~\iow_char:N\\ifnum~or~\iow_char:N\\ifdim. } +\msg_new:nnn { unravel } { internal } + { Internal~error:~'#1'.~\ Please report. } +\msg_new:nnn { unravel } { not-implemented } + { The~following~feature~is~not~implemented:~'#1'. } +%% +%% +%% End of file `unravel.sty'. diff --git a/Master/tlpkg/bin/tlpkg-ctan-check b/Master/tlpkg/bin/tlpkg-ctan-check index 957c6d904cd..e442464e1cf 100755 --- a/Master/tlpkg/bin/tlpkg-ctan-check +++ b/Master/tlpkg/bin/tlpkg-ctan-check @@ -485,7 +485,7 @@ my @TLP_working = qw( umthesis umtypewriter unamthesis underlin underoverlap underscore undolabl uni-wtal-ger uni-wtal-lin unicode-math unisugar units unitsdef universa - unswcover + unravel unswcover uothesis uowthesis uowthesistitlepage upca upmethodology upquote uri url urlbst urwchancal usebib ushort uspatent ut-thesis uwmslide uwthesis diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc index 32bff2e30ed..261b918f3a9 100644 --- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc +++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc @@ -851,6 +851,7 @@ depend underlin depend underoverlap depend undolabl depend units +depend unravel depend upmethodology depend upquote depend uri diff --git a/Master/tlpkg/tlpsrc/unravel.tlpsrc b/Master/tlpkg/tlpsrc/unravel.tlpsrc new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/Master/tlpkg/tlpsrc/unravel.tlpsrc |