%% %% This is file `l3token.sty', %% generated with the docstrip utility. %% %% The original source files were: %% %% l3token.dtx (with options: `package') %% %% %% EXPERIMENTAL CODE %% %% Do not distribute this file without also distributing the %% source files specified above. %% %% Do not distribute a modified version of this file. %% %% %% File: l3token.dtx Copyright (C) 2005-2009 LaTeX3 project %% %% 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 %% %% This file is part of the ``expl3 bundle'' (The Work in LPPL) %% and all files in that bundle must be distributed together. %% %% The released version of this bundle is available from CTAN. %% %% ----------------------------------------------------------------------- %% %% The development version of the bundle can be found at %% %% http://www.latex-project.org/svnroot/experimental/trunk/ %% %% for those people who are interested. %% %%%%%%%%%%% %% NOTE: %% %%%%%%%%%%% %% %% Snapshots taken from the repository represent work in progress and may %% not work or may contain conflicting material! We therefore ask %% people _not_ to put them into distributions, archives, etc. without %% prior consultation with the LaTeX Project Team. %% %% ----------------------------------------------------------------------- \RequirePackage{l3names} \GetIdInfo$Id: l3token.dtx 1550 2009-09-22 06:06:25Z joseph $ {L3 Experimental token investigation and manipulation} \ProvidesExplPackage {\filename}{\filedate}{\fileversion}{\filedescription} \package_check_loaded_expl: \cs_new_eq:NN \char_set_catcode:w \tex_catcode:D \cs_new_nopar:Npn \char_set_catcode:nn #1#2 { \char_set_catcode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_nopar:Npn \char_value_catcode:w { \int_use:N \tex_catcode:D } \cs_new_nopar:Npn \char_value_catcode:n #1 { \char_value_catcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_nopar:Npn \char_show_value_catcode:w { \tex_showthe:D \tex_catcode:D } \cs_new_nopar:Npn \char_show_value_catcode:n #1 { \char_show_value_catcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_nopar:Npn \char_make_escape:N #1 { \char_set_catcode:nn {`#1} {\c_zero} } \cs_new_nopar:Npn \char_make_begin_group:N #1 { \char_set_catcode:nn {`#1} {\c_one} } \cs_new_nopar:Npn \char_make_end_group:N #1 { \char_set_catcode:nn {`#1} {\c_two} } \cs_new_nopar:Npn \char_make_math_shift:N #1 { \char_set_catcode:nn {`#1} {\c_three} } \cs_new_nopar:Npn \char_make_alignment:N #1 { \char_set_catcode:nn {`#1} {\c_four} } \cs_new_nopar:Npn \char_make_end_line:N #1 { \char_set_catcode:nn {`#1} {\c_five} } \cs_new_nopar:Npn \char_make_parameter:N #1 { \char_set_catcode:nn {`#1} {\c_six} } \cs_new_nopar:Npn \char_make_math_superscript:N #1 { \char_set_catcode:nn {`#1} {\c_seven} } \cs_new_nopar:Npn \char_make_math_subscript:N #1 { \char_set_catcode:nn {`#1} {\c_eight} } \cs_new_nopar:Npn \char_make_ignore:N #1 { \char_set_catcode:nn {`#1} {\c_nine} } \cs_new_nopar:Npn \char_make_space:N #1 { \char_set_catcode:nn {`#1} {\c_ten} } \cs_new_nopar:Npn \char_make_letter:N #1 { \char_set_catcode:nn {`#1} {\c_eleven} } \cs_new_nopar:Npn \char_make_other:N #1 { \char_set_catcode:nn {`#1} {\c_twelve} } \cs_new_nopar:Npn \char_make_active:N #1 { \char_set_catcode:nn {`#1} {\c_thirteen} } \cs_new_nopar:Npn \char_make_comment:N #1 { \char_set_catcode:nn {`#1} {\c_fourteen} } \cs_new_nopar:Npn \char_make_invalid:N #1 { \char_set_catcode:nn {`#1} {\c_fifteen} } \cs_new_nopar:Npn \char_make_escape:n #1 { \char_set_catcode:nn {#1} {\c_zero} } \cs_new_nopar:Npn \char_make_begin_group:n #1 { \char_set_catcode:nn {#1} {\c_one} } \cs_new_nopar:Npn \char_make_end_group:n #1 { \char_set_catcode:nn {#1} {\c_two} } \cs_new_nopar:Npn \char_make_math_shift:n #1 { \char_set_catcode:nn {#1} {\c_three} } \cs_new_nopar:Npn \char_make_alignment:n #1 { \char_set_catcode:nn {#1} {\c_four} } \cs_new_nopar:Npn \char_make_end_line:n #1 { \char_set_catcode:nn {#1} {\c_five} } \cs_new_nopar:Npn \char_make_parameter:n #1 { \char_set_catcode:nn {#1} {\c_six} } \cs_new_nopar:Npn \char_make_math_superscript:n #1 { \char_set_catcode:nn {#1} {\c_seven} } \cs_new_nopar:Npn \char_make_math_subscript:n #1 { \char_set_catcode:nn {#1} {\c_eight} } \cs_new_nopar:Npn \char_make_ignore:n #1 { \char_set_catcode:nn {#1} {\c_nine} } \cs_new_nopar:Npn \char_make_space:n #1 { \char_set_catcode:nn {#1} {\c_ten} } \cs_new_nopar:Npn \char_make_letter:n #1 { \char_set_catcode:nn {#1} {\c_eleven} } \cs_new_nopar:Npn \char_make_other:n #1 { \char_set_catcode:nn {#1} {\c_twelve} } \cs_new_nopar:Npn \char_make_active:n #1 { \char_set_catcode:nn {#1} {\c_thirteen} } \cs_new_nopar:Npn \char_make_comment:n #1 { \char_set_catcode:nn {#1} {\c_fourteen} } \cs_new_nopar:Npn \char_make_invalid:n #1 { \char_set_catcode:nn {#1} {\c_fifteen} } \cs_new_eq:NN \char_set_mathcode:w \tex_mathcode:D \cs_new_nopar:Npn \char_set_mathcode:nn #1#2 { \char_set_mathcode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_protected_nopar:Npn \char_gset_mathcode:w { \pref_global:D \tex_mathcode:D } \cs_new_nopar:Npn \char_gset_mathcode:nn #1#2 { \char_gset_mathcode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_nopar:Npn \char_value_mathcode:w { \int_use:N \tex_mathcode:D } \cs_new_nopar:Npn \char_value_mathcode:n #1 { \char_value_mathcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_nopar:Npn \char_show_value_mathcode:w { \tex_showthe:D \tex_mathcode:D } \cs_new_nopar:Npn \char_show_value_mathcode:n #1 { \char_show_value_mathcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_eq:NN \char_set_lccode:w \tex_lccode:D \cs_new_nopar:Npn \char_set_lccode:nn #1#2{ \char_set_lccode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_nopar:Npn \char_value_lccode:w {\int_use:N\tex_lccode:D} \cs_new_nopar:Npn \char_value_lccode:n #1{\char_value_lccode:w \intexpr_eval:w #1\intexpr_eval_end:} \cs_new_nopar:Npn \char_show_value_lccode:w {\tex_showthe:D\tex_lccode:D} \cs_new_nopar:Npn \char_show_value_lccode:n #1{ \char_show_value_lccode:w \intexpr_eval:w #1\intexpr_eval_end:} \cs_new_eq:NN \char_set_uccode:w \tex_uccode:D \cs_new_nopar:Npn \char_set_uccode:nn #1#2{ \char_set_uccode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_nopar:Npn \char_value_uccode:w {\int_use:N\tex_uccode:D} \cs_new_nopar:Npn \char_value_uccode:n #1{\char_value_uccode:w \intexpr_eval:w #1\intexpr_eval_end:} \cs_new_nopar:Npn \char_show_value_uccode:w {\tex_showthe:D\tex_uccode:D} \cs_new_nopar:Npn \char_show_value_uccode:n #1{ \char_show_value_uccode:w \intexpr_eval:w #1\intexpr_eval_end:} \cs_new_eq:NN \char_set_sfcode:w \tex_sfcode:D \cs_new_nopar:Npn \char_set_sfcode:nn #1#2 { \char_set_sfcode:w #1 = \intexpr_eval:w #2\intexpr_eval_end: } \cs_new_nopar:Npn \char_value_sfcode:w { \int_use:N \tex_sfcode:D } \cs_new_nopar:Npn \char_value_sfcode:n #1 { \char_value_sfcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_nopar:Npn \char_show_value_sfcode:w { \tex_showthe:D \tex_sfcode:D } \cs_new_nopar:Npn \char_show_value_sfcode:n #1 { \char_show_value_sfcode:w \intexpr_eval:w #1\intexpr_eval_end: } \cs_new_nopar:Npn \token_new:Nn #1#2 {\cs_gnew_eq:NN #1#2} \cs_new_eq:NN \c_group_begin_token { \cs_new_eq:NN \c_group_end_token } \group_begin: \char_set_catcode:nn{`\*}{3} \token_new:Nn \c_math_shift_token {*} \char_set_catcode:nn{`\*}{4} \token_new:Nn \c_alignment_tab_token {*} \token_new:Nn \c_parameter_token {#} \token_new:Nn \c_math_superscript_token {^} \char_set_catcode:nn{`\*}{8} \token_new:Nn \c_math_subscript_token {*} \token_new:Nn \c_space_token {~} \token_new:Nn \c_letter_token {a} \token_new:Nn \c_other_char_token {1} \char_set_catcode:nn{`\*}{13} \cs_gset_nopar:Npn \c_active_char_token {\exp_not:N*} \group_end: \prg_new_conditional:Nnn \token_if_group_begin:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_group_begin_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_group_end:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_group_end_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_math_shift:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_math_shift_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_alignment_tab:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_alignment_tab_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_parameter:N {p,TF,T,F} { \exp_after:wN\if_catcode:w \cs:w c_parameter_token\cs_end:\exp_not:N #1 \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_math_superscript:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_math_superscript_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_math_subscript:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_math_subscript_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_space:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_space_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_letter:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_letter_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_other_char:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_other_char_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_active_char:N {p,TF,T,F} { \if_catcode:w \exp_not:N #1\c_active_char_token \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_eq_meaning:NN {p,TF,T,F} { \if_meaning:w #1 #2 \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_eq_catcode:NN {p,TF,T,F} { \if_catcode:w \exp_not:N #1 \exp_not:N #2 \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_eq_charcode:NN {p,TF,T,F} { \if_charcode:w \exp_not:N #1 \exp_not:N #2 \prg_return_true: \else: \prg_return_false: \fi: } \prg_new_conditional:Nnn \token_if_macro:N {p,TF,T,F} { \exp_after:wN \token_if_macro_p_aux:w \token_to_meaning:N #1 -> \q_nil } \cs_new_nopar:Npn \token_if_macro_p_aux:w #1 -> #2 \q_nil{ \if_predicate:w \tl_if_empty_p:n{#2} \prg_return_false: \else: \prg_return_true: \fi: } \prg_new_conditional:Nnn \token_if_cs:N {p,TF,T,F} { \if_predicate:w \token_if_eq_catcode_p:NN \scan_stop: #1 \prg_return_true: \else: \prg_return_false: \fi:} \prg_new_conditional:Nnn \token_if_expandable:N {p,TF,T,F} { \cs_if_exist:NTF #1 { \exp_after:wN \if_meaning:w \exp_not:N #1 #1 \prg_return_false: \else: \prg_return_true: \fi: } { \prg_return_false: } } \group_begin: \char_set_lccode:nn {`\T}{`\T} \char_set_lccode:nn {`\F}{`\F} \char_set_lccode:nn {`\X}{`\n} \char_set_lccode:nn {`\Y}{`\t} \char_set_lccode:nn {`\Z}{`\d} \char_set_lccode:nn {`\?}{`\\} \tl_map_inline:nn{\X\Y\Z\M\C\H\A\R\O\U\S\K\I\P\L\G\P\E} {\char_set_catcode:nn {`#1}{12}} \tl_to_lowercase:n{ \group_end: \prg_new_conditional:Nnn \token_if_chardef:N {p,TF,T,F} { \exp_after:wN \token_if_chardef_aux:w \token_to_meaning:N #1?CHAR"\q_nil } \cs_new_nopar:Npn \token_if_chardef_aux:w #1?CHAR"#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_mathchardef:N {p,TF,T,F} { \exp_after:wN \token_if_mathchardef_aux:w \token_to_meaning:N #1?MAYHCHAR"\q_nil } \cs_new_nopar:Npn \token_if_mathchardef_aux:w #1?MAYHCHAR"#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_int_register:N {p,TF,T,F} { \if_meaning:w \tex_countdef:D #1 \prg_return_false: \else: \exp_after:wN \token_if_int_register_aux:w \token_to_meaning:N #1?COUXY\q_nil \fi: } \cs_new_nopar:Npn \token_if_int_register_aux:w #1?COUXY#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_skip_register:N {p,TF,T,F} { \if_meaning:w \tex_skipdef:D #1 \prg_return_false: \else: \exp_after:wN \token_if_skip_register_aux:w \token_to_meaning:N #1?SKIP\q_nil \fi: } \cs_new_nopar:Npn \token_if_skip_register_aux:w #1?SKIP#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_dim_register:N {p,TF,T,F} { \if_meaning:w \tex_dimendef:D #1 \c_false_bool \else: \exp_after:wN \token_if_dim_register_aux:w \token_to_meaning:N #1?ZIMEX\q_nil \fi: } \cs_new_nopar:Npn \token_if_dim_register_aux:w #1?ZIMEX#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_toks_register:N {p,TF,T,F} { \if_meaning:w \tex_toksdef:D #1 \prg_return_false: \else: \exp_after:wN \token_if_toks_register_aux:w \token_to_meaning:N #1?YOKS\q_nil \fi: } \cs_new_nopar:Npn \token_if_toks_register_aux:w #1?YOKS#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_protected_macro:N {p,TF,T,F} { \exp_after:wN \token_if_protected_macro_aux:w \token_to_meaning:N #1?PROYECYEZ~MACRO\q_nil } \cs_new_nopar:Npn \token_if_protected_macro_aux:w #1?PROYECYEZ~MACRO#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_long_macro:N {p,TF,T,F} { \exp_after:wN \token_if_long_macro_aux:w \token_to_meaning:N #1?LOXG~MACRO\q_nil } \cs_new_nopar:Npn \token_if_long_macro_aux:w #1?LOXG~MACRO#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } \prg_new_conditional:Nnn \token_if_protected_long_macro:N {p,TF,T,F} { \exp_after:wN \token_if_protected_long_macro_aux:w \token_to_meaning:N #1?PROYECYEZ?LOXG~MACRO\q_nil } \cs_new_nopar:Npn \token_if_protected_long_macro_aux:w #1 ?PROYECYEZ?LOXG~MACRO#2\q_nil{ \tl_if_empty:nTF {#1} {\prg_return_true:} {\prg_return_false:} } } \group_begin: \char_set_lccode:nn {`\?}{`\:} \char_set_catcode:nn{`\M}{12} \char_set_catcode:nn{`\A}{12} \char_set_catcode:nn{`\C}{12} \char_set_catcode:nn{`\R}{12} \char_set_catcode:nn{`\O}{12} \tl_to_lowercase:n{ \group_end: \cs_new_nopar:Npn \token_get_prefix_arg_replacement_aux:w #1MACRO?#2->#3\q_nil#4{ #4{#1}{#2}{#3} } \cs_new_nopar:Npn\token_get_prefix_spec:N #1{ \token_if_macro:NTF #1{ \exp_after:wN \token_get_prefix_arg_replacement_aux:w \token_to_meaning:N #1\q_nil\use_i:nnn }{\scan_stop:} } \cs_new_nopar:Npn\token_get_arg_spec:N #1{ \token_if_macro:NTF #1{ \exp_after:wN \token_get_prefix_arg_replacement_aux:w \token_to_meaning:N #1\q_nil\use_ii:nnn }{\scan_stop:} } \cs_new_nopar:Npn\token_get_replacement_spec:N #1{ \token_if_macro:NTF #1{ \exp_after:wN \token_get_prefix_arg_replacement_aux:w \token_to_meaning:N #1\q_nil\use_iii:nnn }{\scan_stop:} } } \prg_new_conditional:Nnn \token_if_primitive:N {p,TF,T,F} { \if_predicate:w \token_if_cs_p:N #1 \if_predicate:w \token_if_macro_p:N #1 \prg_return_false: \else: \token_if_primitive_p_aux:N #1 \fi: \else: \if_predicate:w \token_if_active_char_p:N #1 \if_predicate:w \token_if_macro_p:N #1 \prg_return_false: \else: \token_if_primitive_p_aux:N #1 \fi: \else: \prg_return_false: \fi: \fi: } \cs_new_nopar:Npn \token_if_primitive_p_aux:N #1{ \if_predicate:w \token_if_chardef_p:N #1 \c_false_bool \else: \if_predicate:w \token_if_mathchardef_p:N #1 \prg_return_false: \else: \if_predicate:w \token_if_int_register_p:N #1 \prg_return_false: \else: \if_predicate:w \token_if_skip_register_p:N #1 \prg_return_false: \else: \if_predicate:w \token_if_dim_register_p:N #1 \prg_return_false: \else: \if_predicate:w \token_if_toks_register_p:N #1 \prg_return_false: \else: \prg_return_true: \fi: \fi: \fi: \fi: \fi: \fi: } \token_new:Nn \l_peek_token {?} \token_new:Nn \g_peek_token {?} \token_new:Nn \l_peek_search_token {?} \cs_new_nopar:Npn \peek_after:NN {\tex_futurelet:D \l_peek_token } \cs_new_nopar:Npn \peek_gafter:NN { \pref_global:D \tex_futurelet:D \g_peek_token } \tl_new:Nn \l_peek_true_tl {} \tl_new:Nn \l_peek_false_tl {} \cs_new_nopar:Npn \peek_tmp:w {} \tl_new:Nn \l_peek_search_tl {} \cs_new:Npn \peek_token_generic:NNTF #1#2#3#4 { \cs_set_eq:NN \l_peek_search_token #2 \tl_set:Nn \l_peek_search_tl {#2} \tl_set:Nx \l_peek_true_tl {\exp_not:n{\group_align_safe_end: #3}} \tl_set:Nx \l_peek_false_tl {\exp_not:n{\group_align_safe_end: #4}} \group_align_safe_begin: \peek_after:NN #1 } \cs_new:Npn \peek_token_generic:NNT #1#2#3 { \peek_token_generic:NNTF #1#2 {#3} {} } \cs_new:Npn \peek_token_generic:NNF #1#2#3 { \peek_token_generic:NNTF #1#2 {} {#3} } \cs_new:Npn \peek_token_remove_generic:NNTF #1#2#3#4 { \cs_set_eq:NN \l_peek_search_token #2 \tl_set:Nn \l_peek_search_tl {#2} \tl_set:Nx \l_peek_true_aux_tl { \exp_not:n{ #3 } } \tl_set_eq:NN \l_peek_true_tl \c_peek_true_remove_next_tl \tl_set:Nx \l_peek_false_tl {\exp_not:n{\group_align_safe_end: #4}} \group_align_safe_begin: \peek_after:NN #1 } \cs_new:Npn \peek_token_remove_generic:NNT #1#2#3 { \peek_token_remove_generic:NNTF #1#2 {#3} {} } \cs_new:Npn \peek_token_remove_generic:NNF #1#2#3 { \peek_token_remove_generic:NNTF #1#2 {} {#3} } \tl_new:Nn \l_peek_true_aux_tl {} \tl_new:Nn \c_peek_true_remove_next_tl {\group_align_safe_end: \tex_afterassignment:D \l_peek_true_aux_tl \cs_set_eq:NN \peek_tmp:w } \cs_new_nopar:Npn \peek_execute_branches_meaning: { \if_meaning:w \l_peek_token \l_peek_search_token \exp_after:wN \l_peek_true_tl \else: \exp_after:wN \l_peek_false_tl \fi: } \cs_new_nopar:Npn \peek_execute_branches_catcode: { \if_catcode:w \exp_not:N\l_peek_token \exp_not:N\l_peek_search_token \exp_after:wN \l_peek_true_tl \else: \exp_after:wN \l_peek_false_tl \fi: } \cs_new_nopar:Npn \peek_execute_branches_charcode: { \bool_if:nTF { \token_if_eq_catcode_p:NN \l_peek_token \c_group_begin_token || \token_if_eq_catcode_p:NN \l_peek_token \c_group_end_token || \token_if_eq_meaning_p:NN \l_peek_token \c_space_token } { \l_peek_false_tl } { \exp_after:wN \peek_execute_branches_charcode_aux:NN \l_peek_search_tl } } \cs_new:Npn \peek_execute_branches_charcode_aux:NN #1#2{ \if_charcode:w \exp_not:N #1\exp_not:N#2 \exp_after:wN \l_peek_true_tl \else: \exp_after:wN \l_peek_false_tl \fi: #2 } \cs_new_nopar:Npn \peek_def_aux:nnnn #1#2#3#4 { \peek_def_aux_ii:nnnnn {#1} {#2} {#3} {#4} { TF } \peek_def_aux_ii:nnnnn {#1} {#2} {#3} {#4} { T } \peek_def_aux_ii:nnnnn {#1} {#2} {#3} {#4} { F } } \cs_new_nopar:Npn \peek_def_aux_ii:nnnnn #1#2#3#4#5 { \cs_new_nopar:cpx { #1 #5 } { \tl_if_empty:nF {#2} { \exp_not:n { \cs_set_eq:NN \peek_execute_branches: #2 } } \exp_not:c { #3 #5 } \exp_not:n { #4 } } } \peek_def_aux:nnnn { peek_meaning:N } {} { peek_token_generic:NN } { \peek_execute_branches_meaning: } \peek_def_aux:nnnn { peek_meaning_ignore_spaces:N } { \peek_execute_branches_meaning: } { peek_token_generic:NN } { \peek_ignore_spaces_execute_branches: } \peek_def_aux:nnnn { peek_meaning_remove:N } {} { peek_token_remove_generic:NN } { \peek_execute_branches_meaning: } \peek_def_aux:nnnn { peek_meaning_remove_ignore_spaces:N } { \peek_execute_branches_meaning: } { peek_token_remove_generic:NN } { \peek_ignore_spaces_execute_branches: } \peek_def_aux:nnnn { peek_catcode:N } {} { peek_token_generic:NN } { \peek_execute_branches_catcode: } \peek_def_aux:nnnn { peek_catcode_ignore_spaces:N } { \peek_execute_branches_catcode: } { peek_token_generic:NN } { \peek_ignore_spaces_execute_branches: } \peek_def_aux:nnnn { peek_catcode_remove:N } {} { peek_token_remove_generic:NN } { \peek_execute_branches_catcode: } \peek_def_aux:nnnn { peek_catcode_remove_ignore_spaces:N } { \peek_execute_branches_catcode: } { peek_token_remove_generic:NN } { \peek_ignore_spaces_execute_branches: } \peek_def_aux:nnnn { peek_charcode:N } {} { peek_token_generic:NN } { \peek_execute_branches_charcode: } \peek_def_aux:nnnn { peek_charcode_ignore_spaces:N } { \peek_execute_branches_charcode: } { peek_token_generic:NN } { \peek_ignore_spaces_execute_branches: } \peek_def_aux:nnnn { peek_charcode_remove:N } {} { peek_token_remove_generic:NN } { \peek_execute_branches_charcode: } \peek_def_aux:nnnn { peek_charcode_remove_ignore_spaces:N } { \peek_execute_branches_charcode: } { peek_token_remove_generic:NN } { \peek_ignore_spaces_execute_branches:} \cs_new_nopar:Npn \peek_ignore_spaces_aux: { \peek_after:NN \peek_ignore_spaces_execute_branches: } \cs_new_nopar:Npn \peek_ignore_spaces_execute_branches: { \token_if_eq_meaning:NNTF \l_peek_token \c_space_token { \tex_afterassignment:D \peek_ignore_spaces_aux: \cs_set_eq:NN \peek_tmp:w } \peek_execute_branches: } %% %% %% End of file `l3token.sty'.