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Diffstat (limited to 'Master/texmf-dist/source/latex')
-rw-r--r-- | Master/texmf-dist/source/latex/gtl/gtl.dtx | 1839 | ||||
-rw-r--r-- | Master/texmf-dist/source/latex/gtl/gtl.ins | 23 |
2 files changed, 0 insertions, 1862 deletions
diff --git a/Master/texmf-dist/source/latex/gtl/gtl.dtx b/Master/texmf-dist/source/latex/gtl/gtl.dtx deleted file mode 100644 index b4f622066bf..00000000000 --- a/Master/texmf-dist/source/latex/gtl/gtl.dtx +++ /dev/null @@ -1,1839 +0,0 @@ -% \iffalse -%% File: gtl.dtx Copyright (C) 2013,2015 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{gtl} -\begin{document} - \DocInput{gtl.dtx} -\end{document} -%</driver> -% \fi -% -% \title{The \textsf{gtl} package: \\ -% manipulate unbalanced lists of tokens\thanks{This -% file has version number 0.1, last revised 2015/09/21.}} -% \author{Bruno Le Floch} -% \date{2015/09/21} -% -% \maketitle -% \tableofcontents -% -% \begin{documentation} -% -% \section{\pkg{gtl} documentation} -% -% The \texttt{expl3} programming language provides various tools to -% manipulate lists of tokens (package \pkg{l3tl}). However, those token -% lists must have balanced braces, or more precisely balanced -% begin-group and end-group characters. The \pkg{gtl} package -% manipulates instead lists of tokens which may be unbalanced, with more -% begin-group or more end-group characters. -% -% A technical comment: currently, all begin-group characters are -% assumed to have the character code of ``|{|'' and all end-group -% characters that of~``|}|''. -% -% Please report bugs (or suggestions) on the issue tracker -% (\url{https://github.com/blefloch/latex-gtl/issues}). -% -% ^^A The following code checks the test coverage -% \begingroup\ExplSyntaxOn -% \msg_new:nnn { gtldoc } { discarded } { Discarded~some~material~after~closing~brace~of~{function}~or~TEST~or~TESTEXP~argument:~``#1'' } -% \msg_new:nnn { gtldoc } { bad-test } { TEST~or~TESTEXP~followed~by~unexpected~character~``#1'' } -% \msg_new:nnn { gtldoc } { multi-function } { Some~functions~are~defined~twice } -% \msg_new:nnn { gtldoc } { doc-no-test } { ``#1''~is~documented~but~has~no~test } -% \msg_new:nnn { gtldoc } { test-no-doc } { ``#1''~is~tested~but~not~documented } -% \msg_new:nnn { gtldoc } { junk } { There~is~some~unexpected~junk.~Giving~up~on~this~line. } -% \tl_new:N \l__gtldoc_arg_tl -% \seq_new:N \l__gtldoc_internal_seq -% \cs_generate_variant:Nn \use:nn { no } -% \cs_generate_variant:Nn \tl_if_in:nnTF { no } -% \cs_generate_variant:Nn \tl_if_in:nnT { no } -% \cs_generate_variant:Nn \tl_remove_all:Nn { Nx } -% \cs_generate_variant:Nn \seq_set_filter:NNn { NNx } -% \group_begin: -% \seq_new:N \l__gtldoc_fn_seq -% \iow_new:N \g__gtldoc_ior -% \tl_new:N \l__gtldoc_internal_tl -% \str_new:N \l__gtldoc_TF_str -% \seq_new:N \l__gtldoc_arg_seq -% \seq_new:N \l__gtldoc_arg_TF_seq -% \cs_new:Npn \__gtldoc_remove_backslash:N #1 -% { \exp_after:wN \token_if_eq_charcode:NNF \c_backslash_str #1 {#1} } -% \cs_new_protected:Npn \gtldoc_get_fn:n #1 -% { -% \seq_clear:N \l__gtldoc_fn_seq -% \clist_map_inline:nn {#1} -% { -% \__gtldoc_get_fn:nn { function } {#1} ^^A todo: this is wasteful, going through the file twice! -% \__gtldoc_get_fn:nn { variable } {#1} -% } -% } -% \cs_new_protected:Npn \__gtldoc_get_fn:nn #1 -% { -% \exp_args:Noo \__gtldoc_get_fn_aux:nnn -% { \tl_to_str:n { begin } } { \tl_to_str:n { {#1} } } -% } -% \cs_new_eq:NN \__gtldoc_test:w ? -% \cs_new_eq:NN \__gtldoc_skip:w ? -% \cs_new_protected:Npn \__gtldoc_get_fn_aux:nnn #1#2#3 -% { -% \cs_gset_protected:Npn \__gtldoc_test:w ##1 #1 ##2 #2 { } -% \cs_gset_protected_nopar:Npn \__gtldoc_skip:w ##1 #1 ##2 #2 -% { -% \tl_clear:N \l__gtldoc_arg_tl -% \str_clear:N \l__gtldoc_TF_str -% \tl_if_blank:nF {##2} -% { -% \msg_error:nn { gtldoc } { junk } -% \use_none_delimit_by_q_recursion_stop:w -% } -% \__gtldoc_aux:N -% } -% \ior_open:Nn \g__gtldoc_ior {#3} -% \ior_str_map_inline:Nn \g__gtldoc_ior -% { -% \tl_if_in:noT {##1} { \tl_to_str:n { end { documentation } } } ^^A careful if you remove spaces! -% { \ior_map_break: } -% \tl_if_empty:oF { \__gtldoc_test:w ##1 #1 #2 } -% { \__gtldoc_skip:w ##1 \q_recursion_tail \q_recursion_stop } -% } -% \ior_close:N \g__gtldoc_ior -% } -% \cs_new_protected:Npn \__gtldoc_aux:N #1 -% { -% \token_if_eq_meaning:NNT #1 \q_recursion_tail -% { \__gtldoc_more:Nw \__gtldoc_aux:N } -% \str_case_x:nnF {#1} -% { -% \c_percent_str { \__gtldoc_aux:N } ^^A ignore percent -% ^ { \__gtldoc_hat:N } ^^A check for "^^A" -% [ { \__gtldoc_opt:w } -% \c_left_brace_str { \__gtldoc_arg:w } -% } -% { \__gtldoc_varg:N #1 } -% } -% \cs_new_protected:Npn \__gtldoc_more:Nw #1 #2 \q_recursion_stop -% { ^^A grab one more line and restart the loop -% \ior_get_str:NN \g__gtldoc_ior \l__gtldoc_internal_tl -% \exp_after:wN #1 \l__gtldoc_internal_tl -% \q_recursion_tail \q_recursion_stop -% } -% \cs_new_protected:Npn \__gtldoc_hat:N #1 -% { -% \token_if_eq_charcode:NNTF #1 ^ -% { \__gtldoc_hat_hat:N } -% { \__gtldoc_varg:N ^ #1 } -% } -% \cs_new_protected:Npn \__gtldoc_hat_hat:N #1 ^^A in principle we should worry about crazy people doing ^^01 or ^^5b etc -% { -% \token_if_eq_charcode:NNTF #1 A -% { \__gtldoc_more:Nw \__gtldoc_aux:N } ^^A we found a comment -% { \__gtldoc_varg:N ^ ^ #1 } -% } -% \cs_new_protected:Npn \__gtldoc_opt:w #1 \q_recursion_tail -% { -% \tl_if_in:nnTF {#1} { ] } -% { \__gtldoc_opt_aux:w #1 \q_recursion_tail } -% { \__gtldoc_more:Nw \__gtldoc_opt:w } -% } -% \cs_new_protected:Npn \__gtldoc_opt_aux:w #1 ] -% { -% \tl_if_in:noTF {#1} { \tl_to_str:n { pTF } } -% { \str_set:Nn \l__gtldoc_TF_str { pTF } } -% { -% \tl_if_in:noT {#1} { \tl_to_str:n { TF } } -% { \str_set:Nn \l__gtldoc_TF_str { TF } } -% } -% \__gtldoc_aux:N -% } -% \cs_new_protected_nopar:Npn \__gtldoc_arg:w -% { \exp_after:wN \__gtldoc_varg:N \c_right_brace_str } -% \cs_new_protected:Npn \__gtldoc_varg:N #1 -% { \exp_args:No \__gtldoc_varg_aux:n { \token_to_str:N #1 } } -% \cs_new_protected:Npn \__gtldoc_varg_aux:n #1 -% { -% \cs_gset_protected:Npn \__gtldoc_varg_aux:w ##1 #1 { {##1} } -% \cs_gset_protected:Npn \__gtldoc_varg_loop:w ##1 \q_recursion_tail -% { -% \tl_if_in:noTF {##1} {#1} -% { -% \exp_after:wN \__gtldoc_varg_last:nw -% \__gtldoc_varg_aux:w ##1 \q_recursion_tail -% } -% { -% \tl_put_right:Nx \l__gtldoc_arg_tl { ##1 \iow_char:N \^^M } -% \__gtldoc_more:Nw \__gtldoc_varg_loop:w -% } -% } -% \__gtldoc_varg_loop:w -% } -% \cs_new_eq:NN \__gtldoc_varg_aux:w ? -% \cs_new_eq:NN \__gtldoc_varg_loop:w ? -% \cs_new_protected:Npn \__gtldoc_varg_last:nw -% #1#2 \q_recursion_tail \q_recursion_stop -% { -% \tl_if_blank:nF {#2} -% { \msg_warning:nnn { gtldoc } { discarded } {#2} } -% \tl_put_right:Nn \l__gtldoc_arg_tl {#1} -% \tl_remove_all:Nx \l__gtldoc_arg_tl { \iow_char:N \^^M \iow_char:N \% } ^^A from l3doc -% \tl_remove_all:Nx \l__gtldoc_arg_tl { \tl_to_str:n { ^ ^ A } } ^^A from l3doc -% \tl_remove_all:Nx \l__gtldoc_arg_tl { \iow_char:N \^^I } ^^A from l3doc -% \tl_remove_all:Nx \l__gtldoc_arg_tl { \iow_char:N \^^M } ^^A from l3doc -% ^^A \@@_replace_at_at:N \l_@@_tmpa_tl ^^A from l3doc but not done here -% \exp_args:NNx \seq_set_from_clist:Nn \l__gtldoc_arg_seq -% { \tl_to_str:N \l__gtldoc_arg_tl } -% \str_if_empty:NF \l__gtldoc_TF_str -% { -% \seq_clear:N \l__gtldoc_arg_TF_seq -% \seq_map_inline:Nn \l__gtldoc_arg_seq -% { -% \seq_put_right:Nx \l__gtldoc_arg_TF_seq { ##1 TF } -% \seq_put_right:Nx \l__gtldoc_arg_TF_seq { ##1 T } -% \seq_put_right:Nx \l__gtldoc_arg_TF_seq { ##1 F } -% \str_if_eq_x:nnT { \l__gtldoc_TF_str } { pTF } -% { \seq_put_right:Nx \l__gtldoc_arg_TF_seq { \__gtldoc_pred:w ##1 } } -% } -% \seq_set_map:NNn \l__gtldoc_arg_seq -% \l__gtldoc_arg_TF_seq { \tl_to_str:n {##1} } -% } -% \seq_concat:NNN \l__gtldoc_fn_seq \l__gtldoc_fn_seq \l__gtldoc_arg_seq -% } -% \use:no { \cs_new:Npn \__gtldoc_pred:w #1 } { \token_to_str:N : } { #1 _p: } -% \group_end: -% \group_begin: -% \seq_new:N \l__gtldoc_tested_fn_seq -% \cs_new_protected:Npn \gtldoc_get_tests:n #1 -% { -% \seq_clear:N \l__gtldoc_tested_fn_seq -% \clist_map_function:nN {#1} \__gtldoc_get_test:n -% } -% \cs_new_protected:Npn \__gtldoc_get_test:n #1 -% { -% \ior_open:Nn \g__gtldoc_ior {#1} -% \ior_str_map_inline:Nn \g__gtldoc_ior -% { \__gtldoc_test_aux:n {##1} } -% \ior_close:N \g__gtldoc_ior -% } -% \cs_gset_protected:Npn \__gtldoc_tmp:nn #1#2 -% { -% \cs_new_protected:Npn \__gtldoc_test_skipi:w ##1 #1 { } -% \cs_new_protected:Npn \__gtldoc_test_skipii:w ##1 #2 { } -% \cs_new_protected:Npn \__gtldoc_test_aux:n ##1 -% { -% \tl_if_empty:oF { \__gtldoc_test_skipi:w ##1 #1 } -% { -% \tl_if_empty:oTF { \__gtldoc_test_skipii:w ##1 #2 } -% { \__gtldoc_test_auxi:w } { \__gtldoc_test_auxii:w } -% ##1 \q_recursion_tail \q_recursion_stop -% } -% } -% \cs_new_protected:Npn \__gtldoc_test_auxi:w ##1 #1 -% { \__gtldoc_test_auxiii:N } -% \cs_new_protected:Npn \__gtldoc_test_auxii:w ##1 #2 -% { \__gtldoc_test_auxiii:N } -% } -% \exp_args:Noo \__gtldoc_tmp:nn -% { \token_to_str:N \TEST } -% { \token_to_str:N \TESTEXP } -% \cs_new_protected:Npn \__gtldoc_test_auxiii:N #1 -% { -% \token_if_eq_meaning:NNT \q_recursion_tail #1 -% { \__gtldoc_more:Nw \__gtldoc_test_auxiii:N } -% \exp_after:wN \token_if_eq_charcode:NNTF \c_left_brace_str #1 -% { \__gtldoc_test_arg:w } -% { -% \msg_error:nnn { gtldoc } { bad-test } {#1} -% \use_none_delimit_by_q_recursion_stop:w -% } -% } -% \cs_new_protected_nopar:Npn \__gtldoc_test_arg:w -% { -% \tl_clear:N \l__gtldoc_arg_tl -% \exp_args:No \__gtldoc_test_arg_aux:N \c_right_brace_str -% } -% \cs_new_protected:Npn \__gtldoc_test_arg_aux:N #1 -% { -% \cs_gset_protected:Npn \__gtldoc_test_arg_aux:w ##1 #1 { {##1} } -% \cs_gset_protected:Npn \__gtldoc_test_arg_loop:w ##1 \q_recursion_tail -% { -% \tl_if_in:noTF {##1} {#1} -% { -% \exp_after:wN \__gtldoc_test_arg_last:nw -% \__gtldoc_test_arg_aux:w ##1 \q_recursion_tail -% } -% { -% \tl_put_right:Nn \l__gtldoc_arg_tl {##1} -% \__gtldoc_more:Nw \__gtldoc_test_arg_loop:w -% } -% } -% \__gtldoc_test_arg_loop:w -% } -% \cs_new_eq:NN \__gtldoc_test_arg_aux:w ? -% \cs_new_eq:NN \__gtldoc_test_arg_loop:w ? -% \cs_new_protected:Npn \__gtldoc_test_arg_last:nw -% #1#2 \q_recursion_tail \q_recursion_stop -% { -% \tl_if_blank:nF {#2} -% { \msg_warning:nnn { gtldoc } { discarded } {#2} } -% \tl_put_right:Nn \l__gtldoc_arg_tl {#1} -% \exp_args:NNx \seq_set_from_clist:Nn \l__gtldoc_arg_seq -% { \tl_to_str:N \l__gtldoc_arg_tl } -% \seq_set_filter:NNx \l__gtldoc_arg_seq \l__gtldoc_arg_seq -% { \exp_not:N \tl_if_head_eq_charcode_p:nN {####1} \c_backslash_str } -% \seq_concat:NNN \l__gtldoc_tested_fn_seq \l__gtldoc_tested_fn_seq \l__gtldoc_arg_seq -% } -% \group_end: -% \gtldoc_get_fn:n { gtl.dtx } -% \gtldoc_get_tests:n -% { -% ../../testfiles/gtl000.lvt , -% ../../testfiles/gtl001.lvt , -% ../../testfiles/gtl002.lvt , -% ../../testfiles/gtl003.lvt , -% ../../testfiles/gtl004.lvt , -% ../../testfiles/gtl005.lvt , -% ../../testfiles/gtl006.lvt -% } -% \group_begin: -% \seq_set_eq:NN \l__gtldoc_internal_seq \l__gtldoc_fn_seq -% \seq_remove_duplicates:N \l__gtldoc_internal_seq -% \int_compare:nF -% { \seq_count:N \l__gtldoc_internal_seq = \seq_count:N \l__gtldoc_fn_seq } -% { -% \msg_error:nn { gtldoc } { multi-function } -% \seq_set_eq:NN \l__gtldoc_fn_seq \l__gtldoc_internal_seq -% } -% \seq_remove_duplicates:N \l__gtldoc_tested_fn_seq -% \seq_map_inline:Nn \l__gtldoc_fn_seq -% { -% \seq_if_in:NnTF \l__gtldoc_tested_fn_seq {#1} -% { \seq_remove_all:Nn \l__gtldoc_tested_fn_seq {#1} } -% { \msg_error:nnn { gtldoc } { doc-no-test } {#1} } -% } -% \seq_map_inline:Nn \l__gtldoc_tested_fn_seq -% { \msg_error:nnn { gtldoc } { test-no-doc } {#1} } -% \group_end: -% \endgroup -% -% \subsection{Creating and initialising extended token lists} -% -% \begin{function}{\gtl_new:N} -% \begin{syntax} -% \cs{gtl_new:N} \meta{gtl~var} -% \end{syntax} -% Creates a new \meta{gtl~var} or raises an error if the name is -% already taken. The declaration is global. The \meta{gtl~var} will -% initially be empty. -% \end{function} -% -% \begin{function}{\gtl_const:Nn, \gtl_const:Nx} -% \begin{syntax} -% \cs{gtl_const:Nn} \meta{gtl~var} \Arg{token list} -% \end{syntax} -% Creates a new constant \meta{gtl~var} or raises an error if the name -% is already taken. The value of the \meta{gtl~var} will be set -% globally to the balanced \meta{token list}. -% \end{function} -% -% \begin{function}{\gtl_clear:N, \gtl_gclear:N} -% \begin{syntax} -% \cs{gtl_clear:N} \meta{gtl~var} -% \end{syntax} -% Empties the \meta{gtl~var}, locally or globally. -% \end{function} -% -% \begin{function}{\gtl_clear_new:N, \gtl_gclear_new:N} -% \begin{syntax} -% \cs{gtl_clear_new:N} \meta{gtl~var} -% \end{syntax} -% Ensures that the \meta{gtl~var} exists globally by applying -% \cs{gtl_new:N} if necessary, then applies \cs{gtl_(g)clear:N} to -% leave the \meta{gtl~var} empty. -% \end{function} -% -% \begin{function}{\gtl_set_eq:NN, \gtl_gset_eq:NN} -% \begin{syntax} -% \cs{gtl_set_eq:NN} \meta{gtl~var_1} \meta{gtl~var_2} -% \end{syntax} -% Sets the content of \meta{gtl~var_1} equal to that of -% \meta{gtl~var_2}. -% \end{function} -% -% \begin{function}{\gtl_concat:NNN, \gtl_gconcat:NNN} -% \begin{syntax} -% \cs{gtl_concat:NNN} \meta{gtl~var_1} \meta{gtl~var_2} \meta{gtl~var_3} -% \end{syntax} -% Concatenates the content of \meta{gtl~var_2} and \meta{gtl~var_3} -% together and saves the result in \meta{gtl~var_1}. The -% \meta{gtl~var_2} will be placed at the left side of the new extended -% token list. -% \end{function} -% -% \begin{function}[EXP, pTF]{\gtl_if_exist:N} -% \begin{syntax} -% \cs{gtl_if_exist_p:N} \meta{gtl~var} -% \cs{gtl_if_exist:NTF} \meta{gtl~var} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests whether the \meta{gtl~var} is currently defined. This does -% not check that the \meta{gtl~var} really is an extended token list -% variable. -% \end{function} -% -% \subsection{Adding data to token list variables} -% -% \begin{function}{\gtl_set:Nn, \gtl_set:Nx, \gtl_gset:Nn, \gtl_gset:Nx} -% \begin{syntax} -% \cs{gtl_set:Nn} \meta{gtl~var} \Arg{token list} -% \end{syntax} -% Sets \meta{gtl~var} to contain the balanced \meta{token list}, -% removing any previous content from the variable. -% \end{function} -% -% \begin{function}{\gtl_put_left:Nn, \gtl_gput_left:Nn} -% \begin{syntax} -% \cs{gtl_put_left:Nn} \meta{gtl~var} \Arg{token list} -% \end{syntax} -% Appends the balanced \meta{token list} to the left side of the -% current content of \meta{gtl~var}. -% \end{function} -% -% \begin{function}{\gtl_put_right:Nn, \gtl_gput_right:Nn} -% \begin{syntax} -% \cs{gtl_put_right:Nn} \meta{gtl~var} \Arg{token list} -% \end{syntax} -% Appends the balanced \meta{token list} to the right side of the -% current content of \meta{gtl~var}. -% \end{function} -% -% \subsection{Extended token list conditionals} -% -% \begin{function}[EXP, pTF]{\gtl_if_blank:N} -% \begin{syntax} -% \cs{gtl_if_blank_p:N} \Arg{gtl~var} -% \cs{gtl_if_blank:NTF} \Arg{gtl~var} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the \meta{gtl~var} consists only of blank spaces. The test -% is \texttt{true} if \meta{gtl~var} consists of zero or more explicit -% space characters (explicit tokens with character code~$32$ and -% category code~$10$), and is \texttt{false} otherwise. -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_empty:N} -% \begin{syntax} -% \cs{gtl_if_empty_p:N} \meta{gtl~var} -% \cs{gtl_if_empty:NTF} \meta{gtl~var} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the \meta{gtl~var} is entirely empty (\emph{i.e.}~contains -% no tokens at all). -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_eq:NN} -% \begin{syntax} -% \cs{gtl_if_eq_p:NN} \Arg{gtl~var_1} \Arg{gtl~var_2} -% \cs{gtl_if_eq:NNTF} \Arg{gtl~var_1} \Arg{gtl~var_2} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if \meta{gtl~var_1} and \meta{gtl~var_2} have the same -% content. The test is \texttt{true} if the two contain the same list -% of tokens (identical in both character code and category code). -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_single_token:N} -% \begin{syntax} -% \cs{gtl_if_single_token_p:N} \meta{gtl~var} -% \cs{gtl_if_single_token:NTF} \meta{gtl~var} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the content of the \meta{gtl~var} consists of a single -% token. Such a token list has token count $1$ according to -% \cs{gtl_count_tokens:N}. -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_tl:N} -% \begin{syntax} -% \cs{gtl_if_tl_p:N} \meta{gtl~var} -% \cs{gtl_if_tl:NTF} \meta{gtl~var} \Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the \meta{gtl~var} is balanced. -% \end{function} -% -% \subsection{The first token from an extended token list} -% -% \begin{function}[EXP]{\gtl_head:N} -% \begin{syntax} -% \cs{gtl_head:N} \meta{gtl~var} -% \end{syntax} -% Leaves in the input stream the first token in the \meta{gtl~var}. -% If the \meta{gtl~var} is empty, nothing is left in the input stream. -% \end{function} -% -% \begin{function}[EXP]{\gtl_head_do:NN} -% \begin{syntax} -% \cs{gtl_head_do:NN} \meta{gtl~var} \meta{cs} -% \end{syntax} -% Leaves in the input stream the \meta{control sequence} followed by -% the first token in \meta{gtl~var}. If the \meta{gtl~var} is empty, -% the \meta{cs} is followed by \cs{q_no_value}. -% \end{function} -% -% \begin{function}{\gtl_get_left:NN} -% \begin{syntax} -% \cs{gtl_get_left:NN} \meta{gtl~var_1} \meta{gtl~var_2} -% \end{syntax} -% Stores the first token from \meta{gtl~var_1} in \meta{gtl~var_2} as -% an single-token extended token list, without removing it from -% \meta{gtl~var_1}. -% \end{function} -% -% \begin{function}{\gtl_pop_left:N, \gtl_gpop_left:N} -% \begin{syntax} -% \cs{gtl_pop_left:N} \meta{gtl~var} -% \end{syntax} -% Remove the first token from \meta{gtl~var_1}. -% If the \meta{gtl~var_1} is empty nothing happens. -% \end{function} -% -% \begin{function}{\gtl_pop_left:NN, \gtl_gpop_left:NN} -% \begin{syntax} -% \cs{gtl_pop_left:NN} \meta{gtl~var_1} \meta{gtl~var_2} -% \end{syntax} -% Stores the first token from \meta{gtl~var_1} in \meta{gtl~var_2} as -% an single-token extended token list, and remove it from -% \meta{gtl~var_1}. If the \meta{gtl~var_1} is empty it remains so, -% and \meta{gtl~var_2} is set to contain \cs{q_no_value}. -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_head_eq_catcode:NN} -% \begin{syntax} -% \cs{gtl_if_head_eq_catcode_p:NN} \Arg{gtl~var} \meta{test token} -% \cs{gtl_if_head_eq_catcode:NNTF} \Arg{gtl~var} \meta{test token} -% ~~\Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the first token in \meta{gtl~var} has the same category -% code as the \meta{test token}. In the case where \meta{gtl~var} is -% empty, the test will always be \texttt{false}. -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_head_eq_charcode:NN} -% \begin{syntax} -% \cs{gtl_if_head_eq_charcode_p:NN} \Arg{gtl~var} \meta{test token} -% \cs{gtl_if_head_eq_charcode:NNTF} \Arg{gtl~var} \meta{test token} -% ~~\Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the first token in \meta{gtl~var} has the same character -% code as the \meta{test token}. In the case where \meta{gtl~var} is -% empty, the test will always be \texttt{false}. -% \end{function} -% -% \begin{function}[EXP,pTF]{\gtl_if_head_eq_meaning:NN} -% \begin{syntax} -% \cs{gtl_if_head_eq_meaning_p:NN} \Arg{gtl~var} \meta{test token} -% \cs{gtl_if_head_eq_meaning:NNTF} \Arg{gtl~var} \meta{test token} -% ~~\Arg{true code} \Arg{false code} -% \end{syntax} -% Tests if the first token in \meta{gtl~var} has the same meaning as -% the \meta{test token}. In the case where \meta{gtl~var} is empty, -% the test will always be \texttt{false}. -% \end{function} -% -% \begin{function}[EXP,pTF] -% { -% \gtl_if_head_is_group_begin:N, -% \gtl_if_head_is_group_end:N, -% \gtl_if_head_is_N_type:N, -% \gtl_if_head_is_space:N, -% } -% \begin{syntax} -% \cs{gtl_if_head_is_group_begin_p:N} \Arg{gtl~var} -% \cs{gtl_if_head_is_group_begin:NTF} \Arg{gtl~var} -% ~~\Arg{true code} \Arg{false code} -% \end{syntax} -% Tests whether the first token in \meta{gtl~var} is an explicit -% begin-group character, an explicit end-group character, an |N|-type -% token, or a space. In the case where \meta{gtl~var} is empty, the -% test will always be \texttt{false}. -% \end{function} -% -% \subsection{The first few tokens from an extended token list} -% -% \begin{function}[EXP]{\gtl_left_tl:N} -% \begin{syntax} -% \cs{gtl_left_tl:N} \meta{gtl~var} -% \end{syntax} -% Leaves in the input stream all tokens in \meta{gtl~var} until the -% first extra begin-group or extra end-group character, within -% \cs{exp_not:n}. This is the longest balanced token list starting -% from the left of \meta{gtl~var}. -% \end{function} -% -% \begin{function}{\gtl_pop_left_tl:N, \gtl_gpop_left_tl:N} -% \begin{syntax} -% \cs{gtl_pop_left_tl:N} \meta{gtl~var} -% \end{syntax} -% Remove from the \meta{gtl~var} all tokens before the first extra -% begin-group or extra end-group character. The tokens that are -% removed form the longest balanced token list starting from the left -% of \meta{gtl~var}. -% \end{function} -% -% \begin{function}[EXP]{\gtl_left_item:NF} -% \begin{syntax} -% \cs{gtl_left_item:NF} \meta{gtl~var} \Arg{false code} -% \end{syntax} -% Leaves in the input stream the first \meta{item} of the -% \meta{gtl~var}: this is identical to \cs{tl_head:n} applied to the -% result of \cs{gtl_left_tl:N}. If there is no such item, the -% \meta{false code} is left in the input stream. -% \end{function} -% -% \begin{function}[TF]{\gtl_pop_left_item:NN, \gtl_gpop_left_item:NN} -% \begin{syntax} -% \cs{gtl_pop_left_item:NNTF} \meta{gtl~var} \meta{tl~var} -% \Arg{true~code} \Arg{false~code} -% \end{syntax} -% Stores the first item of \meta{gtl~var} in \meta{tl~var}, locally, -% and removes it from \meta{gtl~var}, together with any space before -% it. If there is no such item, the \meta{gtl~var} is not affected, -% and the meta{tl~var} may or may not be affected. -% \end{function} -% -% \begin{function}[EXP]{\gtl_left_text:NF} -% \begin{syntax} -% \cs{gtl_left_text:NF} \meta{gtl~var} \Arg{false code} -% \end{syntax} -% Starting from the first token in \meta{gtl~var}, this function finds -% a pattern of the form \meta{tokens_1} \Arg{tokens_2}, where the -% \meta{tokens_1} contain no begin-group nor end-group characters, -% then leaves \meta{tokens_1} \Arg{tokens_2} in the input stream, -% within \cs{exp_not:n}. If no such pattern exists (this happens if -% the result of \cs{gtl_left_tl:N} contains no brace group), the -% \meta{false code} is run instead. -% \end{function} -% -% \begin{function}{\gtl_pop_left_text:N, \gtl_gpop_left_text:N} -% \begin{syntax} -% \cs{gtl_pop_left_text:N} \meta{gtl~var} -% \end{syntax} -% Starting from the first token in \meta{gtl~var}, this function finds -% a pattern of the form \meta{tokens_1} \Arg{tokens_2}, where the -% \meta{tokens_1} contain no begin-group nor end-group characters, -% then removes \meta{tokens_1} \Arg{tokens_2} from \meta{gtl~var}. If -% no such pattern exists (this happens if the result of -% \cs{gtl_left_tl:N} contains no brace group), the \meta{gtl~var} is -% not modified instead. -% \end{function} -% -% \subsection{Working with the contents of extended token lists} -% -% \begin{function}[EXP]{\gtl_count_tokens:N} -% \begin{syntax} -% \cs{gtl_count_tokens:N} \meta{gtl~var} -% \end{syntax} -% Counts the number of tokens in the \meta{gtl~var} and leaves this -% information in the input stream. -% \end{function} -% -% \begin{function}[EXP]{\gtl_extra_begin:N, \gtl_extra_end:N} -% \begin{syntax} -% \cs{gtl_extra_begin:N} \meta{gtl~var} -% \end{syntax} -% Counts the number of explicit extra begin-group (or end-group) -% characters in the \meta{gtl~var} and leaves this information in the -% input stream. -% \end{function} -% -% \begin{function}{\gtl_show:N, \gtl_log:N} -% \begin{syntax} -% \cs{gtl_show:N} \meta{gtl~var} -% \end{syntax} -% Displays the content of the \meta{gtl~var} on the terminal or in -% the log file. -% \end{function} -% -% \begin{function}[EXP]{\gtl_to_str:N} -% \begin{syntax} -% \cs{gtl_to_str:N} \meta{gtl~var} -% \end{syntax} -% Converts the content of the \meta{gtl~var} into a series of -% characters with category code $12$ (other) with the exception of -% spaces, which retain category code $10$ (space). This string is -% then left in the input stream. -% \end{function} -% -% \subsection{Constant extended token lists} -% -% \begin{variable}{\c_empty_gtl} -% Constant that is always empty. -% \end{variable} -% -% \begin{variable}{\c_group_begin_gtl} -% An explicit begin-group character contained in an extended token -% list. -% \end{variable} -% -% \begin{variable}{\c_group_end_gtl} -% An explicit end-group character contained in an extended token list. -% \end{variable} -% -% \subsection{Future perhaps} -% -% \begin{itemize} -% \item Test if a token appears in an extended token list. -% \item Test if an extended token list appears in another. -% \item Remove an extended token list from another, once or every time -% it appears. -% \item Replace an extended token list by another in a third: once, or -% every time it appears. -% \item Case statement. -% \item Mapping? -% \item Inserting an extended token list into the input stream, with all -% its glorious unbalanced braces. -% \item Convert in various ways to a token list. -% \item Reverse the order of tokens. -% \item Extract a token given its position. -% \item Extract a range of tokens given their position. -% \item Trim spaces. -% \item Crazy idea below. -% \end{itemize} -% -% We could add (with lots of work) the expandable function -% \begin{quote}\ttfamily\obeylines\obeyspaces -% \cs{gtl_concat:nF} -% \{ -% \Arg{tl_1} \Arg{start_1} \Arg{stop_1} -% \Arg{tl_2} \Arg{start_2} \Arg{stop_2} -% \ldots{} -% \Arg{tl_n} \Arg{start_n} \Arg{stop_n} -% \} -% \Arg{false code} -% \end{quote} -% For each triplet, this function builds the sub-token list of \meta{tl_i} -% corresponding to the tokens ranging from position \meta{start_i} to -% position \meta{stop_i} of \meta{tl_i}. The results obtained for each triplet -% are then concatenated. If nothing bad happens (see below), the -% concatenation is left in the input stream, and the \meta{false code} is -% removed. Two cases can lead to running the \meta{false code} (and dropping -% the first argument altogether). The first case is when the number of -% brace groups in \cs{gtl_concat:nF} is not a multiple of 3. The second -% case is when the concatenation gives rise to an unbalanced token list: -% then the result is not a valid token list. Note that each part is -% allowed to be unbalanced: only the full result must be balanced. -% -% \end{documentation} -% -% \begin{implementation} -% -% \section{\pkg{gtl} 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}[2015/09/11] -\ProvidesExplPackage - {gtl} {2015/09/21} {0.1} {Manipulate unbalanced lists of tokens} -% \end{macrocode} -% -% \begin{macrocode} -%<@@=gtl> -% \end{macrocode} -% -% \subsection{Helpers} -% -% \begin{macrocode} -\cs_generate_variant:Nn \use:nn { no } -% \end{macrocode} -% -% \begin{macro}[EXP, int]{\@@_exp_not_n:N} -% Used in one case where we need to prevent expansion of a token -% within an |x|-expanding definition. Using \cs{exp_not:N} there -% would fail when the argument is a macro parameter character. -% \begin{macrocode} -\cs_new:Npn \@@_exp_not_n:N #1 { \exp_not:n {#1} } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP, int]{\@@_brace:nn, \@@_brace_swap:nn} -% Those functions are used to add some tokens, |#1|, to an item |#2| -% in an extended token list: \cs{@@_brace:nn} adds tokens on the left, -% while \cs{@@_brace_swap:nn} adds them on the right. -% \begin{macrocode} -\cs_new:Npn \@@_brace:nn #1#2 { { #1 #2 } } -\cs_new:Npn \@@_brace_swap:nn #1#2 { { #2 #1 } } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP,aux]{\@@_strip_nil_mark:w,} -% \begin{macro}[EXP,aux]{\@@_strip_nil_mark_aux:w} -% Removes the following \cs{q_nil} \cs{q_mark} without losing any -% braces, and places the result into \cs{exp_not:n}. -% \begin{macrocode} -\cs_new_nopar:Npn \@@_strip_nil_mark:w - { \@@_strip_nil_mark_aux:w \prg_do_nothing: } -\cs_new:Npn \@@_strip_nil_mark_aux:w #1 \q_nil \q_mark - { \exp_not:o {#1} } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{Structure of extended token lists} -% -% Token lists must have balanced braces (or rather, begin-group and -% end-group characters). Extended token lists lift this requirement, -% and can represent arbitrary lists of tokens. A list of tokens can -% fail to be balanced in two ways: one may encounter too many end-group -% characters near the beginning of the list, or too many begin-group -% characters near the end of the list. In fact, a list of tokens always -% has the form -% \begin{quote}\ttfamily -% \meta{b_1} \} \ldots{} \meta{b_n} \} -% \meta{c} -% \{ \meta{e_1} \ldots{} \{ \meta{e_p} -% \end{quote} -% where the \meta{b_i}, \meta{c}, and \meta{e_i} are all balanced token -% lists. This can be seen by listing the tokens, and keeping track of a -% counter, which starts at~$0$, and is incremented at each begin-group -% character, and decremented at each end-group character: then the -% \meta{b_i} are delimited by positions where the counter reaches a new -% minimum, whereas the \meta{e_i} are delimited by positions where the -% counter last takes a given negative value. Such a token list is -% stored as -% \begin{quote}\ttfamily -% \cs{s_@@} -% \{ \Arg{b_1} \ldots{} \Arg{b_n} \} -% \Arg{c} -% \{ \Arg{e_p} \ldots{} \Arg{e_1} \} -% \end{quote} -% Note that the \meta{e_i} are in a reversed order, as this makes the -% ends of extended token lists more accessible. Balanced token lists -% have $n = p = 0$: the first and third parts are empty, while the -% second contains the tokens. -% -% In the following code comments, the balanced token lists \meta{b_i} -% are called ``leading chunks'', \meta{c} is called ``middle chunk'', -% and \meta{e_i} are called ``trailing chunks''. It is important to -% note that a balanced sub-list of a gtl must be entirely contained in -% one of the chunk. -% -% \begin{variable}{\s_@@} -% This marker appears at the start of extended token lists. -% \begin{macrocode} -\cs_new_eq:NN \s_@@ \scan_stop: -% \end{macrocode} -% \end{variable} -% -% \begin{macro} -% { -% \gtl_set:Nn, \gtl_gset:Nn, \gtl_const:Nn, -% \gtl_set:Nx, \gtl_gset:Nx, \gtl_const:Nx -% } -% Storing a balanced token list into an extended token list variable -% simply means adding \cs{s_@@} and two empty brace -% groups: there are no leading nor trailing chunks. -% \begin{macrocode} -\cs_new_protected_nopar:Npn \gtl_set:Nn { \@@_set:NNn \tl_set:Nn } -\cs_new_protected_nopar:Npn \gtl_gset:Nn { \@@_set:NNn \tl_gset:Nn } -\cs_new_protected_nopar:Npn \gtl_const:Nn { \@@_set:NNn \tl_const:Nn } -\cs_new_protected_nopar:Npn \gtl_set:Nx { \@@_set:NNn \tl_set:Nx } -\cs_new_protected_nopar:Npn \gtl_gset:Nx { \@@_set:NNn \tl_gset:Nx } -\cs_new_protected_nopar:Npn \gtl_const:Nx { \@@_set:NNn \tl_const:Nx } -\cs_new_protected:Npn \@@_set:NNn #1#2#3 - { #1 #2 { \s_@@ { } {#3} { } } } -% \end{macrocode} -% \end{macro} -% -% \begin{variable}{\c_empty_gtl} -% An empty extended token list, obtained thanks to the -% \cs{gtl_const:Nn} function just defined. -% \begin{macrocode} -\gtl_const:Nn \c_empty_gtl { } -% \end{macrocode} -% \end{variable} -% -% \begin{variable}{\c_group_begin_gtl, \c_group_end_gtl} -% Extended token lists with exactly one begin-group/end-group -% character are built by including a single (empty) leading or -% trailing chunk. -% \begin{macrocode} -\tl_const:Nn \c_group_end_gtl { \s_@@ { { } } { } { } } -\tl_const:Nn \c_group_begin_gtl { \s_@@ { } { } { { } } } -% \end{macrocode} -% \end{variable} -% -% \subsection{Creating extended token list variables} -% -% \begin{macro}{\gtl_new:N} -% A new extended token list is created empty. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_new:N #1 - { \cs_new_eq:NN #1 \c_empty_gtl } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}{\gtl_set_eq:NN, \gtl_gset_eq:NN} -% All the data about an extended token list is stored as a single -% token list, so copying is easy. -% \begin{macrocode} -\cs_new_eq:NN \gtl_set_eq:NN \tl_set_eq:NN -\cs_new_eq:NN \gtl_gset_eq:NN \tl_gset_eq:NN -% \end{macrocode} -% \end{macro} -% -% \begin{macro}{\gtl_clear:N, \gtl_gclear:N} -% Clearing an extended token list by setting it to the empty one. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_clear:N #1 - { \gtl_set_eq:NN #1 \c_empty_gtl } -\cs_new_protected:Npn \gtl_gclear:N #1 - { \gtl_gset_eq:NN #1 \c_empty_gtl } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}{\gtl_clear_new:N, \gtl_gclear_new:N} -% If the variable exists, clear it. Otherwise declare it. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_clear_new:N #1 - { \gtl_if_exist:NTF #1 { \gtl_clear:N #1 } { \gtl_new:N #1 } } -\cs_new_protected:Npn \gtl_gclear_new:N #1 - { \gtl_if_exist:NTF #1 { \gtl_gclear:N #1 } { \gtl_new:N #1 } } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_exist:N} -% Again a copy of token list functions. -% \begin{macrocode} -\prg_new_eq_conditional:NNn \gtl_if_exist:N \tl_if_exist:N - { p , T , F , TF } -% \end{macrocode} -% \end{macro} -% -% \subsection{Adding data to extended token list variables} -% -% \begin{macro}{\gtl_put_left:Nn, \gtl_gput_left:Nn} -% \begin{macro}[aux, rEXP]{\@@_put_left:wn} -% If there is no leading chunk in the gtl variable, then add the new -% material to the middle chunk. Otherwise add it to the first -% leading chunk, namely the first brace group in the first argument -% of \cs{@@_put_left:wn}. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_put_left:Nn #1#2 - { \tl_set:Nx #1 { \exp_after:wN \@@_put_left:wn #1 {#2} } } -\cs_new_protected:Npn \gtl_gput_left:Nn #1#2 - { \tl_gset:Nx #1 { \exp_after:wN \@@_put_left:wn #1 {#2} } } -\cs_new:Npn \@@_put_left:wn \s_@@ #1#2#3 #4 - { - \tl_if_empty:nTF {#1} - { \exp_not:n { \s_@@ { } { #4 #2 } {#3} } } - { - \s_@@ - { \exp_not:o { \@@_brace:nn {#4} #1 } } - { \exp_not:n {#2} } - { \exp_not:n {#3} } - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_put_right:Nn, \gtl_gput_right:Nn} -% \begin{macro}[aux, rEXP]{\@@_put_right:wn} -% Symmetric of \cs{gtl_put_left:Nn}. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_put_right:Nn #1#2 - { \tl_set:Nx #1 { \exp_after:wN \@@_put_right:wn #1 {#2} } } -\cs_new_protected:Npn \gtl_gput_right:Nn #1#2 - { \tl_gset:Nx #1 { \exp_after:wN \@@_put_right:wn #1 {#2} } } -\cs_new:Npn \@@_put_right:wn \s_@@ #1#2#3 #4 - { - \tl_if_empty:nTF {#3} - { \exp_not:n { \s_@@ {#1} { #2 #4 } { } } } - { - \s_@@ - { \exp_not:n {#1} } - { \exp_not:n {#2} } - { \exp_not:o { \@@_brace_swap:nn {#4} #3 } } - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_concat:NNN, \gtl_gconcat:NNN} -% \begin{macro}[rEXP, aux] -% { -% \@@_concat:ww, -% \@@_concat_aux:nnnnnn, -% \@@_concat_auxi:nnnnnn, -% \@@_concat_auxii:nnnnnn, -% \@@_concat_auxiii:w, -% \@@_concat_auxiv:nnnn, -% \@@_concat_auxv:wnwnn, -% \@@_concat_auxvi:nnwnwnn -% } -% Concatenating two lists of tokens of the form -% \begin{quote}\ttfamily -% \cs{s_@@} -% \{ \Arg{b_1} \ldots{} \Arg{b_n} \} -% \Arg{c} -% \{ \Arg{e_p} \ldots{} \Arg{e_1} \} -% \end{quote} -% is not an easy task. The \meta{e} parts of the first join with the -% \meta{b} parts of the second to make balanced pairs, and the -% follow-up depends on whether there were more \meta{e} parts or more -% \meta{b} parts. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_concat:NNN #1#2#3 - { \tl_set:Nx #1 { \exp_last_two_unbraced:Noo \@@_concat:ww #2 #3 } } -\cs_new_protected:Npn \gtl_gconcat:NNN #1#2#3 - { \tl_gset:Nx #1 { \exp_last_two_unbraced:Noo \@@_concat:ww #2 #3 } } -\cs_new:Npn \@@_concat:ww \s_@@ #1#2#3 \s_@@ #4#5#6 - { - \tl_if_blank:nTF {#3} - { - \tl_if_blank:nTF {#4} - { \@@_concat_aux:nnnnnn } - { \@@_concat_auxi:nnnnnn } - } - { - \tl_if_blank:nTF {#4} - { \@@_concat_auxii:nnnnnn } - { \@@_concat_auxiv:nnnn } - } - {#1} {#2} {#3} {#4} {#5} {#6} - } -\cs_new:Npn \@@_concat_aux:nnnnnn #1#2#3#4#5#6 - { \exp_not:n { \s_@@ {#1} { #2 #5 } {#6} } } -\cs_new:Npn \@@_concat_auxi:nnnnnn #1#2#3#4#5#6 - { - \s_@@ - { - \exp_not:n {#1} - \exp_not:f - { \@@_concat_auxiii:w \@@_brace:nn {#2} #4 ~ \q_stop } - } - { \exp_not:n {#5} } - { \exp_not:n {#6} } - } -\cs_new:Npn \@@_concat_auxii:nnnnnn #1#2#3#4#5#6 - { - \s_@@ - { \exp_not:n {#1} } - { \exp_not:n {#2} } - { - \exp_not:n {#6} - \exp_not:f - { \@@_concat_auxiii:w \@@_brace_swap:nn {#5} #3 ~ \q_stop } - } - } -\cs_new:Npn \@@_concat_auxiii:w #1 ~ #2 \q_stop {#1} -\cs_new:Npn \@@_concat_auxiv:nnnn #1#2#3#4 - { - \tl_if_single:nTF {#3} - { \@@_concat_auxv:wnwnn } - { \@@_concat_auxvi:nnwnwnn } - #3 ~ \q_mark #4 ~ \q_mark {#1} {#2} - } -\cs_new:Npn \@@_concat_auxv:wnwnn - #1#2 \q_mark #3#4 \q_mark #5#6 - { - \@@_concat:ww - \s_@@ {#5} { #6 { #1 #3 } } { } - \s_@@ {#4} - } -\cs_new:Npn \@@_concat_auxvi:nnwnwnn - #1#2#3 \q_mark #4#5 \q_mark #6#7 - { - \@@_concat:ww - \s_@@ {#6} {#7} { { #2 { #1 #4 } } #3 } - \s_@@ {#5} - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{Showing extended token lists} -% -% \begin{macro}[EXP]{\gtl_to_str:N} -% \begin{macro}[EXP, aux] -% { -% \@@_to_str:w, -% \@@_to_str_loopi:nnw, -% \@@_to_str_testi:nnw, -% \@@_to_str_endi:nnn, -% \@@_to_str_loopii:nnw, -% \@@_to_str_endii:nnw -% } -% \begin{macrocode} -\cs_new:Npn \gtl_to_str:N #1 { \exp_after:wN \@@_to_str:w #1 } -\cs_new:Npn \@@_to_str:w \s_@@ #1#2#3 - { \@@_to_str_loopi:nnw { } #1 \q_nil \q_mark {#2} {#3} } -\cs_new:Npx \@@_to_str_loopi:nnw #1#2 - { - \exp_not:N \quark_if_nil:nTF {#2} - { \exp_not:N \@@_to_str_testi:nnw {#1} {#2} } - { \exp_not:N \@@_to_str_loopi:nnw { #1 #2 \iow_char:N \} } } - } -\cs_new:Npx \@@_to_str_testi:nnw #1#2#3 \q_mark - { - \exp_not:N \tl_if_empty:nTF {#3} - { \exp_not:N \@@_to_str_endi:nnn {#1} } - { - \exp_not:N \@@_to_str_loopi:nnw - { #1 #2 \iow_char:N \} } #3 \exp_not:N \q_mark - } - } -\cs_new:Npn \@@_to_str_endi:nnn #1#2#3 - { \@@_to_str_loopii:nnw #3 { #1 #2 } \q_nil \q_stop } -\cs_new:Npx \@@_to_str_loopii:nnw #1#2 - { - \exp_not:N \quark_if_nil:nTF {#2} - { \exp_not:N \@@_to_str_testii:nnw {#1} {#2} } - { \exp_not:N \@@_to_str_loopii:nnw { #2 \iow_char:N \{ #1 } } - } -\cs_new:Npx \@@_to_str_testii:nnw #1#2#3 \q_stop - { - \exp_not:N \tl_if_empty:nTF {#3} - { \exp_not:N \tl_to_str:n {#1} } - { - \exp_not:N \@@_to_str_loopii:nnw - { #2 \iow_char:N \{ #1 } #3 \exp_not:N \q_stop - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_show:N, \gtl_log:N} -% \begin{macro}[aux]{\@@_show:NNN} -% Display the variable name, then its string representation. Before -% that, test that the variable indeed exists, and if appropriate -% throw an error message by sending the undefined variable to -% \cs{tl_show:N} or \cs{tl_log:N}. -% \begin{macrocode} -\cs_new_protected_nopar:Npn \gtl_show:N - { \@@_show:NNN \tl_show:n \tl_show:N } -\cs_new_protected_nopar:Npn \gtl_log:N - { \@@_show:NNN \tl_log:n \tl_log:N } -\cs_new_protected:Npn \@@_show:NNN #1#2#3 - { - \gtl_if_exist:NTF #3 - { \exp_args:Nx #1 { \token_to_str:N #3 = \gtl_to_str:N #3 } } - { #2 #3 } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{Extended token list conditionals} -% -% \begin{macro}[EXP, pTF]{\gtl_if_eq:NN} -% Two extended token lists are equal if the underlying token lists -% are the same. -% \begin{macrocode} -\prg_new_eq_conditional:NNn \gtl_if_eq:NN \tl_if_eq:NN - { p , T , F , TF } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_empty:N} -% An extended token list is empty if it is equal to the empty gtl. -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_empty:N #1 { p , T , F , TF } - { - \tl_if_eq:NNTF #1 \c_empty_gtl - { \prg_return_true: } { \prg_return_false: } - } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_tl:N} -% \begin{macro}[EXP,aux]{\@@_if_tl_return:w} -% A gtl is balanced if it has neither leading nor trailing chunk. -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_tl:N #1 { p , T , F , TF } - { \exp_after:wN \@@_if_tl_return:w #1 } -\cs_new:Npn \@@_if_tl_return:w \s_@@ #1#2#3 - { - \tl_if_empty:nTF { #1 #3 } - { \prg_return_true: } { \prg_return_false: } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_single_token:N} -% \begin{macro}[EXP,aux]{\@@_if_single_token_return:w} -% If there are neither leading nor trailing chunks then the gtl is a -% single token if and only if the middle chunk is a single token. -% Otherwise the gtl is a single token only if it is exactly a -% begin-group or an end-group token. -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_single_token:N #1 { p , T , F , TF } - { \exp_after:wN \@@_if_single_token_return:w #1 #1 } -\cs_new:Npn \@@_if_single_token_return:w \s_@@ #1#2#3 #4 - { - \tl_if_empty:nTF { #1 #3 } - { - \tl_if_single_token:nTF {#2} - { \prg_return_true: } - { \prg_return_false: } - } - { - \gtl_if_eq:NNTF #4 \c_group_begin_gtl - { \prg_return_true: } - { - \gtl_if_eq:NNTF #4 \c_group_end_gtl - { \prg_return_true: } - { \prg_return_false: } - } - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP,pTF]{\gtl_if_blank:N} -% \begin{macro}[EXP,aux]{\@@_if_blank_return:w} -% A gtl is blank if its middle chunk is blank and it has no leading -% nor trailing chunk (those would lead to |#1| or |#3| containing -% brace groups). -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_blank:N #1 { p , T , F , TF } - { \exp_after:wN \@@_if_blank_return:w #1 } -\cs_new:Npn \@@_if_blank_return:w \s_@@ #1#2#3 - { - \tl_if_blank:nTF { #1 #2 #3 } - { \prg_return_true: } - { \prg_return_false: } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP,pTF] -% { -% \gtl_if_head_is_group_begin:N, -% \gtl_if_head_is_group_end:N, -% \gtl_if_head_is_space:N, -% \gtl_if_head_is_N_type:N, -% } -% Based on a five-way test \cs{@@_head:wnnnnn} defined later. The -% five cases are: the gtl is empty, it starts with a begin-group, -% with an end-group, with a space, or with an N-type token. In the -% last case, the token is left in the input stream after the brace -% group, hence the need for \cs{use_none:n} here. -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_head_is_group_begin:N #1 - { p , T , F , TF } - { - \exp_after:wN \@@_head:wnnnnn #1 - { \prg_return_false: } - { \prg_return_true: } - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_false: \use_none:n } - } -\prg_new_conditional:Npnn \gtl_if_head_is_group_end:N #1 - { p , T , F , TF } - { - \exp_after:wN \@@_head:wnnnnn #1 - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_true: } - { \prg_return_false: } - { \prg_return_false: \use_none:n } - } -\prg_new_conditional:Npnn \gtl_if_head_is_space:N #1 - { p , T , F , TF } - { - \exp_after:wN \@@_head:wnnnnn #1 - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_true: } - { \prg_return_false: \use_none:n } - } -\prg_new_conditional:Npnn \gtl_if_head_is_N_type:N #1 - { p , T , F , TF } - { - \exp_after:wN \@@_head:wnnnnn #1 - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_false: } - { \prg_return_true: \use_none:n } - } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_head_eq_catcode:NN} -% \begin{macro}[EXP, pTF]{\gtl_if_head_eq_charcode:NN} -% \begin{macro}[EXP, aux]{\@@_if_head_eq_code_return:NNN} -% In the empty case, |?| can match with |#2|, but then -% \cs{use_none:nn} gets rid of \cs{prg_return_true:} and \cs{else:}, -% to correctly leave \cs{prg_return_false:}. We could not simplify -% this by placing the \cs{exp_not:N} |#2| after the construction -% involving~|#1|, because |#2|~must be taken into the \TeX{} primitive -% test, in case |#2|~itself is a primitive \TeX{} conditional, which -% would mess up conditional nesting. -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_head_eq_catcode:NN #1#2 - { p , T , F , TF } - { \@@_if_head_eq_code_return:NNN \if_catcode:w #1#2 } -\prg_new_conditional:Npnn \gtl_if_head_eq_charcode:NN #1#2 - { p , T , F , TF } - { \@@_if_head_eq_code_return:NNN \if_charcode:w #1#2 } -\cs_new:Npn \@@_if_head_eq_code_return:NNN #1#2#3 - { - #1 - \exp_not:N #3 - \exp_after:wN \@@_head:wnnnnn #2 - { ? \use_none:nn } - { \c_group_begin_token } - { \c_group_end_token } - { \c_space_token } - { \exp_not:N } - \prg_return_true: - \else: - \prg_return_false: - \fi: - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP, pTF]{\gtl_if_head_eq_meaning:NN} -% \begin{macro}[EXP, aux]{\@@_if_head_eq_meaning_return:NN} -% \begin{macrocode} -\prg_new_conditional:Npnn \gtl_if_head_eq_meaning:NN #1#2 - { p , T , F , TF } - { \@@_if_head_eq_meaning_return:NN #1#2 } -\cs_new:Npn \@@_if_head_eq_meaning_return:NN #1#2 - { - \exp_after:wN \@@_head:wnnnnn #1 - { \if_false: } - { \if_meaning:w #2 \c_group_begin_token } - { \if_meaning:w #2 \c_group_end_token } - { \if_meaning:w #2 \c_space_token } - { \if_meaning:w #2 } - \prg_return_true: - \else: - \prg_return_false: - \fi: - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{First token of an extended token list} -% -% \begin{macro}[EXP, int]{\@@_head:wnnnnn} -% \begin{macro}[EXP, aux]{\@@_head_aux:nwnnnn} -% \begin{macro}[EXP, aux]{\@@_head_auxii:N, \@@_head_auxiii:Nnn} -% This function performs |#4|~if the \texttt{gtl} is empty, |#5|~if it -% starts with a begin-group character, |#6|~if it starts with an -% end-group character, |#7|~if it starts with a space, and in other -% cases (when the first token is |N|-type), it performs |#8|~followed -% by the first token. -% \begin{macrocode} -\cs_new:Npn \@@_head:wnnnnn \s_@@ #1#2#3 #4#5#6#7#8 - { - \tl_if_empty:nTF {#1} - { - \tl_if_empty:nTF {#2} - { \tl_if_empty:nTF {#3} {#4} {#5} } - { \@@_head_aux:nwnnnn {#2} \q_stop {#5} {#6} {#7} {#8} } - } - { \@@_head_aux:nwnnnn #1 \q_stop {#5} {#6} {#7} {#8} } - } -\cs_new:Npn \@@_head_aux:nwnnnn #1#2 \q_stop #3#4#5#6 - { - \tl_if_head_is_group:nTF {#1} {#3} - { - \tl_if_empty:nTF {#1} {#4} - { - \tl_if_head_is_space:nTF {#1} {#5} - { \if_false: { \fi: \@@_head_auxii:N #1 } {#6} } - } - } - } -\cs_new:Npn \@@_head_auxii:N #1 - { - \exp_after:wN \@@_head_auxiii:Nnn - \exp_after:wN #1 - \exp_after:wN { \if_false: } \fi: - } -\cs_new:Npn \@@_head_auxiii:Nnn #1#2#3 { #3 #1 } -% \end{macrocode} -% \end{macro} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP]{\gtl_head:N} -% If |#1| is empty, do nothing. If it starts with a begin-group -% character or an end-group character leave the appropriate brace -% (thanks to \cs{if_false:} tricks). If it starts with a space, leave -% that, and finally if it starts with a normal token, leave it, within -% \cs{exp_not:n}. -% \begin{macrocode} -\cs_new:Npn \gtl_head:N #1 - { - \exp_after:wN \@@_head:wnnnnn #1 - { } - { \exp_after:wN { \if_false: } \fi: } - { \if_false: { \fi: } } - { ~ } - { \@@_exp_not_n:N } - } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}[EXP]{\gtl_head_do:NN} -% Similar to \cs{gtl_head:N}, but inserting |#2| before the resulting token. -% \begin{macrocode} -\cs_new:Npn \gtl_head_do:NN #1#2 - { - \exp_after:wN \@@_head:wnnnnn #1 - { #2 \q_no_value } - { \exp_after:wN #2 \exp_after:wN { \if_false: } \fi: } - { \if_false: { \fi: #2 } } - { #2 ~ } - { #2 } - } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}{\gtl_get_left:NN} -% \begin{macrocode} -\cs_new_protected:Npn \gtl_get_left:NN #1#2 - { - \exp_after:wN \@@_head:wnnnnn #1 - { \gtl_set:Nn #2 { \q_no_value } } - { \gtl_set_eq:NN #2 \c_group_begin_gtl } - { \gtl_set_eq:NN #2 \c_group_end_gtl } - { \gtl_set:Nn #2 { ~ } } - { \gtl_set:Nn #2 } - } -% \end{macrocode} -% \end{macro} -% -% \begin{macro}{\gtl_pop_left:N, \gtl_gpop_left:N} -% \begin{macro}[aux, rEXP] -% { -% \@@_pop_left:w, -% \@@_pop_left_auxi:n, -% \@@_pop_left_auxii:nnnw, -% \@@_pop_left_auxiii:nnnw, -% \@@_pop_left_auxiv:nn, -% \@@_pop_left_auxv:nnn, -% \@@_pop_left_auxvi:n -% } -% \begin{macrocode} -\cs_new_protected:Npn \gtl_pop_left:N #1 - { - \gtl_if_empty:NF #1 - { \tl_set:Nx #1 { \exp_after:wN \@@_pop_left:w #1 } } - } -\cs_new_protected:Npn \gtl_gpop_left:N #1 - { - \gtl_if_empty:NF #1 - { \tl_gset:Nx #1 { \exp_after:wN \@@_pop_left:w #1 } } - } -\cs_new:Npn \@@_pop_left:w \s_@@ #1#2#3 - { - \tl_if_empty:nTF {#1} - { - \tl_if_empty:nTF {#2} - { \@@_pop_left_auxi:n {#3} } - { \@@_pop_left_auxiv:nn {#2} {#3} } - } - { \@@_pop_left_auxv:nnn {#1} {#2} {#3} } - } -\cs_new:Npn \@@_pop_left_auxi:n #1 - { - \s_@@ - { } - \@@_pop_left_auxii:nnnw { } { } #1 \q_nil \q_stop - } -\cs_new:Npn \@@_pop_left_auxii:nnnw #1#2#3 - { - \quark_if_nil:nTF {#3} - { \@@_pop_left_auxiii:nnnw {#1} {#2} {#3} } - { \@@_pop_left_auxii:nnnw { #1 #2 } { {#3} } } - } -\cs_new:Npn \@@_pop_left_auxiii:nnnw #1#2#3#4 \q_stop - { - \tl_if_empty:nTF {#4} - { \exp_not:n { #2 {#1} } } - { \@@_pop_left_auxii:nnnw { #1 #2 } { {#3} } } - } -\cs_new:Npn \@@_pop_left_auxiv:nn #1#2 - { - \s_@@ - { \tl_if_head_is_group:nT {#1} { { \tl_head:n {#1} } } } - { \tl_if_head_is_space:nTF {#1} { \exp_not:f } { \tl_tail:n } {#1} } - { \exp_not:n {#2} } - } -\cs_new:Npn \@@_pop_left_auxv:nnn #1#2#3 - { - \s_@@ - { \if_false: { \fi: \@@_pop_left_auxvi:n #1 } } - { \exp_not:n {#2} } - { \exp_not:n {#3} } - } -\cs_new:Npn \@@_pop_left_auxvi:n #1 - { - \tl_if_empty:nF {#1} - { - \tl_if_head_is_group:nT {#1} { { \tl_head:n {#1} } } - { - \tl_if_head_is_space:nTF {#1} - { \exp_not:f } { \tl_tail:n } {#1} - } - } - \exp_after:wN \exp_not:n \exp_after:wN { \if_false: } \fi: - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_pop_left:NN, \gtl_gpop_left:NN} -% Getting the first token and removing it from the extended token list -% is done in two steps. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_pop_left:NN #1#2 - { - \gtl_get_left:NN #1 #2 - \gtl_pop_left:N #1 - } -\cs_new_protected:Npn \gtl_gpop_left:NN #1#2 - { - \gtl_get_left:NN #1 #2 - \gtl_gpop_left:N #1 - } -% \end{macrocode} -% \end{macro} -% -% \subsection{Longest token list starting an extended token list} -% -% \begin{macro}[EXP]{\gtl_left_tl:N} -% \begin{macro}[EXP,aux]{\@@_left_tl:w} -% If there is no leading chunk, return the middle chunk, otherwise -% the first leading chunk. -% \begin{macrocode} -\cs_new:Npn \gtl_left_tl:N #1 - { \exp_after:wN \@@_left_tl:w #1 } -\cs_new:Npn \@@_left_tl:w \s_@@ #1#2#3 - { \tl_if_empty:nTF {#1} { \exp_not:n {#2} } { \tl_head:n {#1} } } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_pop_left_tl:N, \gtl_gpop_left_tl:N} -% If there is no left chunk, remove the middle chunk, hence the -% resulting gtl will start with two empty brace groups (one for the -% absence of leading chunk, and one for the emptyness of the middle -% chunk). If there are left chunks replace the first one by an empty -% chunk. -% \begin{macrocode} -\cs_new_protected:Npn \gtl_pop_left_tl:N #1 - { \tl_set:Nx #1 { \exp_after:wN \@@_pop_left_tl:w #1 } } -\cs_new_protected:Npn \gtl_gpop_left_tl:N #1 - { \tl_gset:Nx #1 { \exp_after:wN \@@_pop_left_tl:w #1 } } -\cs_new:Npn \@@_pop_left_tl:w \s_@@ #1#2#3 - { - \s_@@ - \tl_if_empty:nTF {#1} - { { } { } } - { - { { } \tl_tail:n {#1} } - { \exp_not:n {#2} } - } - { \exp_not:n {#3} } - } -% \end{macrocode} -% \end{macro} -% -% \subsection{First item of an extended token list} -% -% \begin{macro}[EXP]{\gtl_left_item:NF} -% \begin{macro}[aux, EXP]{\@@_left_item:wF, \@@_left_item_auxi:nwF} -% The left-most item of an extended token list is the head of its left -% token list. The code thus starts like \cs{gtl_left_tl:N}. It ends -% with a check to test if we should use the head, or issue the false -% code. -% \begin{macrocode} -\cs_new:Npn \gtl_left_item:NF #1 - { \exp_after:wN \@@_left_item:wF #1 } -\cs_new:Npn \@@_left_item:wF \s_@@ #1#2#3 - { \@@_left_item_auxi:nwF #1 {#2} \q_stop } -\cs_new:Npn \@@_left_item_auxi:nwF #1#2 \q_stop #3 - { \tl_if_blank:nTF {#1} {#3} { \tl_head:n {#1} } } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[TF]{\gtl_pop_left_item:NN, \gtl_gpop_left_item:NN} -% \begin{macro}[aux] -% {\@@_pop_left_item:wNNN, \@@_pop_left_item_aux:nwnnNNN} -% If there is no extra end-group characters, and if the balanced part -% is blank, we cannot extract an item: return \texttt{false}. If the -% balanced part is not blank, store its first item into |#4|, and -% store the altered generalized token list into~|#6|, locally or -% globally. Otherwise, pick out the part before the first extra -% end-group character as |#1| of the second auxiliary, and do -% essentially the same: if it is blank, there is no item, and if it is -% not blank, pop its first item. -% \begin{macrocode} -\prg_new_protected_conditional:Npnn \gtl_pop_left_item:NN #1#2 { TF , T , F } - { \exp_after:wN \@@_pop_left_item:wNNN #1#2 \tl_set:Nx #1 } -\prg_new_protected_conditional:Npnn \gtl_gpop_left_item:NN #1#2 { TF , T , F } - { \exp_after:wN \@@_pop_left_item:wNNN #1#2 \tl_gset:Nx #1 } -\cs_new_protected:Npn \@@_pop_left_item:wNNN - \s_@@ #1#2#3 #4#5#6 - { - \tl_if_empty:nTF {#1} - { - \tl_if_blank:nTF {#2} { \prg_return_false: } - { - \tl_set:Nx #4 { \tl_head:n {#2} } - #5 #6 - { - \s_@@ { } { \tl_tail:n {#2} } - { \exp_not:n {#3} } - } - \prg_return_true: - } - } - { - \@@_pop_left_item_aux:nwnnNNN #1 \q_nil \q_stop - {#2} {#3} #4 #5 #6 - } - } -\cs_new_protected:Npn \@@_pop_left_item_aux:nwnnNNN - #1#2 \q_stop #3#4#5#6#7 - { - \tl_if_blank:nTF {#1} { \prg_return_false: } - { - \tl_set:Nx #5 { \tl_head:n {#1} } - #6 #7 - { - \s_@@ - { { \tl_tail:n {#1} } \@@_strip_nil_mark:w #2 \q_mark } - { \exp_not:n {#3} } - { \exp_not:n {#4} } - } - \prg_return_true: - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{First group in an extended token list} -% -% The functions of this section extract from an extended token list the -% tokens that would be absorbed after |\def\foo|, namely tokens with no -% begin-group nor end-group characters, followed by one group. Those -% tokens are either left in the input stream or stored in a token list -% variable, and the |pop| functions also remove those tokens from the -% extended token list variable. -% -% \begin{macro}[EXP]{\gtl_left_text:NF} -% \begin{macro}[aux, EXP] -% { -% \@@_left_text:wF, -% \@@_left_text_auxi:nwF, -% \@@_left_text_auxii:wnwF, -% \@@_left_text_auxiii:nnwF, -% } -% \begin{macrocode} -\cs_new:Npn \gtl_left_text:NF #1 - { \exp_after:wN \@@_left_text:wF #1 } -\cs_new:Npn \@@_left_text:wF \s_@@ #1#2#3 - { - \tl_if_empty:nTF {#1} - { \@@_left_text_auxi:nwF {#2} \q_stop } - { \@@_left_text_auxi:nwF #1 \q_stop } - } -\cs_new:Npn \@@_left_text_auxi:nwF #1#2 \q_stop - { \@@_left_text_auxii:wnwF #1 \q_mark { } \q_mark \q_stop } -\cs_new:Npn \@@_left_text_auxii:wnwF #1 # - { \@@_left_text_auxiii:nnwF {#1} } -\cs_new:Npn \@@_left_text_auxiii:nnwF #1#2 #3 \q_mark #4 \q_stop #5 - { \tl_if_empty:nTF {#4} {#5} { \exp_not:n { #1 {#2} } } } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}{\gtl_pop_left_text:N, \gtl_gpop_left_text:N} -% \begin{macro}[aux, rEXP] -% { -% \@@_pop_left_text:w, -% \@@_pop_left_text_auxi:n, -% \@@_pop_left_text_auxii:wnw, -% \@@_pop_left_text_auxiii:nnw, -% \@@_pop_left_text_auxiv:nw, -% } -% \begin{macrocode} -\cs_new_protected:Npn \gtl_pop_left_text:N #1 - { \tl_set:Nx #1 { \exp_after:wN \@@_pop_left_text:w #1 } } -\cs_new_protected:Npn \gtl_gpop_left_text:N #1 - { \tl_gset:Nx #1 { \exp_after:wN \@@_pop_left_text:w #1 } } -\cs_new:Npn \@@_pop_left_text:w \s_@@ #1#2#3 - { - \s_@@ - \tl_if_empty:nTF {#1} - { - { } - { \@@_pop_left_text_auxi:n {#2} } - } - { - { \@@_pop_left_text_auxiv:nw #1 \q_nil \q_mark } - { \exp_not:n {#2} } - } - { \exp_not:n {#3} } - } -\cs_new:Npn \@@_pop_left_text_auxi:n #1 - { - \@@_pop_left_text_auxii:wnw #1 - \q_nil \q_mark { } \q_mark \q_stop - } -\cs_new:Npn \@@_pop_left_text_auxii:wnw #1 # - { \@@_pop_left_text_auxiii:nnw {#1} } -\cs_new:Npn \@@_pop_left_text_auxiii:nnw #1#2#3 \q_mark #4 \q_stop - { - \tl_if_empty:nTF {#4} - { \@@_strip_nil_mark:w #1 } - { \@@_strip_nil_mark:w #3 \q_mark } - } -\cs_new:Npn \@@_pop_left_text_auxiv:nw #1 - { - { \@@_pop_left_text_auxi:n {#1} } - \@@_strip_nil_mark:w - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \subsection{Counting tokens} -% -% \begin{macro}[EXP, int]{\@@_tl_count:n} -% \begin{macro}[EXP, aux]{\@@_tl_count_loop:n, \@@_tl_count_test:w} -% A more robust version of \cs{tl_count:n}, which will however break -% if the token list contains \cs{q_stop} at the outer brace level. -% This cannot happen when \cs{@@_tl_count:n} is called with lists of -% braced items. The technique is to loop, and when seeing -% \cs{q_mark}, make sure that this is really the end of the list. -% \begin{macrocode} -\cs_new:Npn \@@_tl_count:n #1 - { \int_eval:n { \c_zero \@@_tl_count_loop:n #1 \q_nil \q_stop } } -\cs_new:Npn \@@_tl_count_loop:n #1 - { - \quark_if_nil:nTF {#1} - { \@@_tl_count_test:w } - { + \c_one \@@_tl_count_loop:n } - } -\cs_new:Npn \@@_tl_count_test:w #1 \q_stop - { \tl_if_empty:nF {#1} { + \c_one \@@_tl_count_loop:n #1 \q_stop } } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP]{\gtl_extra_begin:N, \gtl_extra_end:N} -% \begin{macro}[EXP, aux]{\@@_extra_begin:w, \@@_extra_end:w} -% Count the number of extra end-group or of extra begin-group -% characters in an extended token list. This is the number of items -% in the first or third brace groups. We cannot use \cs{tl_count:n}, -% as \pkg{gtl} is meant to be robust against inclusion of quarks. -% \begin{macrocode} -\cs_new:Npn \gtl_extra_end:N #1 - { \exp_after:wN \@@_extra_end:w #1 } -\cs_new:Npn \@@_extra_end:w \s_@@ #1#2#3 - { \@@_tl_count:n {#1} } -\cs_new:Npn \gtl_extra_begin:N #1 - { \exp_after:wN \@@_extra_begin:w #1 } -\cs_new:Npn \@@_extra_begin:w \s_@@ #1#2#3 - { \@@_tl_count:n {#3} } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macro}[EXP]{\gtl_count_tokens:N} -% \begin{macro}[aux, rEXP] -% { -% \@@_count_tokens:w, -% \@@_count_auxi:nw, -% \@@_count_auxii:w, -% \@@_count_auxiii:n -% } -% \begin{macrocode} -\cs_new:Npn \gtl_count_tokens:N #1 - { \exp_after:wN \@@_count_tokens:w #1 } -\cs_new:Npn \@@_count_tokens:w \s_@@ #1#2#3 - { - \int_eval:n - { \c_minus_one \@@_count_auxi:nw #1 {#2} #3 \q_nil \q_stop } - } -\cs_new:Npn \@@_count_auxi:nw #1 - { - \quark_if_nil:nTF {#1} - { \@@_count_auxii:w } - { - + \c_one - \@@_count_auxiii:n {#1} - \@@_count_auxi:nw - } - } -\cs_new:Npn \@@_count_auxii:w #1 \q_stop - { - \tl_if_empty:nF {#1} - { - + \c_two - \@@_count_auxi:nw #1 \q_stop - } - } -\cs_new:Npn \@@_count_auxiii:n #1 - { - \tl_if_empty:nF {#1} - { - \tl_if_head_is_group:nTF {#1} - { - + \c_two - \exp_args:No \@@_count_auxiii:n { \use:n #1 } - } - { - + \c_one - \tl_if_head_is_N_type:nTF {#1} - { \exp_args:No \@@_count_auxiii:n { \use_none:n #1 } } - { \exp_args:Nf \@@_count_auxiii:n {#1} } - } - } - } -% \end{macrocode} -% \end{macro} -% \end{macro} -% -% \begin{macrocode} -%</package> -% \end{macrocode} -% -% \end{implementation} -% -% \endinput diff --git a/Master/texmf-dist/source/latex/gtl/gtl.ins b/Master/texmf-dist/source/latex/gtl/gtl.ins deleted file mode 100644 index 0f77d88503a..00000000000 --- a/Master/texmf-dist/source/latex/gtl/gtl.ins +++ /dev/null @@ -1,23 +0,0 @@ -\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{gtl.sty} {\from{gtl.dtx} {package}}% -} - -\endbatchfile |