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%%
%% This is file `l3tl.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% l3tl.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: l3tl.dtx Copyright (C) 1990-2013 The 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 "l3kernel 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 LaTeX3 Project.
%%
%% -----------------------------------------------------------------------
\RequirePackage{l3bootstrap}
\GetIdInfo$Id: l3tl.dtx 4415 2013-01-08 12:32:51Z bruno $
{L3 Token lists}
\ProvidesExplPackage
{\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
\__expl_package_check:
\cs_new_protected:Npn \tl_new:N #1
{
\__chk_if_free_cs:N #1
\cs_gset_eq:NN #1 \c_empty_tl
}
\cs_generate_variant:Nn \tl_new:N { c }
\cs_new_protected:Npn \tl_const:Nn #1#2
{
\__chk_if_free_cs:N #1
\cs_gset_nopar:Npx #1 { \exp_not:n {#2} }
}
\cs_new_protected:Npn \tl_const:Nx #1#2
{
\__chk_if_free_cs:N #1
\cs_gset_nopar:Npx #1 {#2}
}
\cs_generate_variant:Nn \tl_const:Nn { c }
\cs_generate_variant:Nn \tl_const:Nx { c }
\cs_new_protected:Npn \tl_clear:N #1
{ \tl_set_eq:NN #1 \c_empty_tl }
\cs_new_protected:Npn \tl_gclear:N #1
{ \tl_gset_eq:NN #1 \c_empty_tl }
\cs_generate_variant:Nn \tl_clear:N { c }
\cs_generate_variant:Nn \tl_gclear:N { c }
\cs_new_protected:Npn \tl_clear_new:N #1
{ \tl_if_exist:NTF #1 { \tl_clear:N #1 } { \tl_new:N #1 } }
\cs_new_protected:Npn \tl_gclear_new:N #1
{ \tl_if_exist:NTF #1 { \tl_gclear:N #1 } { \tl_new:N #1 } }
\cs_generate_variant:Nn \tl_clear_new:N { c }
\cs_generate_variant:Nn \tl_gclear_new:N { c }
\cs_new_eq:NN \tl_set_eq:NN \cs_set_eq:NN
\cs_new_eq:NN \tl_set_eq:cN \cs_set_eq:cN
\cs_new_eq:NN \tl_set_eq:Nc \cs_set_eq:Nc
\cs_new_eq:NN \tl_set_eq:cc \cs_set_eq:cc
\cs_new_eq:NN \tl_gset_eq:NN \cs_gset_eq:NN
\cs_new_eq:NN \tl_gset_eq:cN \cs_gset_eq:cN
\cs_new_eq:NN \tl_gset_eq:Nc \cs_gset_eq:Nc
\cs_new_eq:NN \tl_gset_eq:cc \cs_gset_eq:cc
\cs_new_protected:Npn \tl_concat:NNN #1#2#3
{ \tl_set:Nx #1 { \exp_not:o {#2} \exp_not:o {#3} } }
\cs_new_protected:Npn \tl_gconcat:NNN #1#2#3
{ \tl_gset:Nx #1 { \exp_not:o {#2} \exp_not:o {#3} } }
\cs_generate_variant:Nn \tl_concat:NNN { ccc }
\cs_generate_variant:Nn \tl_gconcat:NNN { ccc }
\prg_new_eq_conditional:NNn \tl_if_exist:N \cs_if_exist:N { TF , T , F , p }
\prg_new_eq_conditional:NNn \tl_if_exist:c \cs_if_exist:c { TF , T , F , p }
\tl_const:Nn \c_empty_tl { }
\tl_const:Nx \c_job_name_tl { \tex_jobname:D }
\tl_const:Nn \c_space_tl { ~ }
\cs_new_protected:Npn \tl_set:Nn #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:n {#2} } }
\cs_new_protected:Npn \tl_set:No #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o {#2} } }
\cs_new_protected:Npn \tl_set:Nx #1#2
{ \cs_set_nopar:Npx #1 {#2} }
\cs_new_protected:Npn \tl_gset:Nn #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:n {#2} } }
\cs_new_protected:Npn \tl_gset:No #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o {#2} } }
\cs_new_protected:Npn \tl_gset:Nx #1#2
{ \cs_gset_nopar:Npx #1 {#2} }
\cs_generate_variant:Nn \tl_set:Nn { NV , Nv , Nf }
\cs_generate_variant:Nn \tl_set:Nx { c }
\cs_generate_variant:Nn \tl_set:Nn { c, co , cV , cv , cf }
\cs_generate_variant:Nn \tl_gset:Nn { NV , Nv , Nf }
\cs_generate_variant:Nn \tl_gset:Nx { c }
\cs_generate_variant:Nn \tl_gset:Nn { c, co , cV , cv , cf }
\cs_new_protected:Npn \tl_put_left:Nn #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:n {#2} \exp_not:o #1 } }
\cs_new_protected:Npn \tl_put_left:NV #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:V #2 \exp_not:o #1 } }
\cs_new_protected:Npn \tl_put_left:No #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o {#2} \exp_not:o #1 } }
\cs_new_protected:Npn \tl_put_left:Nx #1#2
{ \cs_set_nopar:Npx #1 { #2 \exp_not:o #1 } }
\cs_new_protected:Npn \tl_gput_left:Nn #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:n {#2} \exp_not:o #1 } }
\cs_new_protected:Npn \tl_gput_left:NV #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:V #2 \exp_not:o #1 } }
\cs_new_protected:Npn \tl_gput_left:No #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o {#2} \exp_not:o #1 } }
\cs_new_protected:Npn \tl_gput_left:Nx #1#2
{ \cs_gset_nopar:Npx #1 { #2 \exp_not:o {#1} } }
\cs_generate_variant:Nn \tl_put_left:Nn { c }
\cs_generate_variant:Nn \tl_put_left:NV { c }
\cs_generate_variant:Nn \tl_put_left:No { c }
\cs_generate_variant:Nn \tl_put_left:Nx { c }
\cs_generate_variant:Nn \tl_gput_left:Nn { c }
\cs_generate_variant:Nn \tl_gput_left:NV { c }
\cs_generate_variant:Nn \tl_gput_left:No { c }
\cs_generate_variant:Nn \tl_gput_left:Nx { c }
\cs_new_protected:Npn \tl_put_right:Nn #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o #1 \exp_not:n {#2} } }
\cs_new_protected:Npn \tl_put_right:NV #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o #1 \exp_not:V #2 } }
\cs_new_protected:Npn \tl_put_right:No #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o #1 \exp_not:o {#2} } }
\cs_new_protected:Npn \tl_put_right:Nx #1#2
{ \cs_set_nopar:Npx #1 { \exp_not:o #1 #2 } }
\cs_new_protected:Npn \tl_gput_right:Nn #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o #1 \exp_not:n {#2} } }
\cs_new_protected:Npn \tl_gput_right:NV #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o #1 \exp_not:V #2 } }
\cs_new_protected:Npn \tl_gput_right:No #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o #1 \exp_not:o {#2} } }
\cs_new_protected:Npn \tl_gput_right:Nx #1#2
{ \cs_gset_nopar:Npx #1 { \exp_not:o {#1} #2 } }
\cs_generate_variant:Nn \tl_put_right:Nn { c }
\cs_generate_variant:Nn \tl_put_right:NV { c }
\cs_generate_variant:Nn \tl_put_right:No { c }
\cs_generate_variant:Nn \tl_put_right:Nx { c }
\cs_generate_variant:Nn \tl_gput_right:Nn { c }
\cs_generate_variant:Nn \tl_gput_right:NV { c }
\cs_generate_variant:Nn \tl_gput_right:No { c }
\cs_generate_variant:Nn \tl_gput_right:Nx { c }
\group_begin:
\tex_lccode:D `\A = `\@ \scan_stop:
\tex_lccode:D `\B = `\@ \scan_stop:
\tex_catcode:D `\A = 8 \scan_stop:
\tex_catcode:D `\B = 3 \scan_stop:
\tex_lowercase:D
{
\group_end:
\tl_const:Nn \c__tl_rescan_marker_tl { A B }
}
\cs_new_protected_nopar:Npn \tl_set_rescan:Nnn
{ \__tl_set_rescan:NNnn \tl_set:Nn }
\cs_new_protected_nopar:Npn \tl_gset_rescan:Nnn
{ \__tl_set_rescan:NNnn \tl_gset:Nn }
\cs_new_protected_nopar:Npn \tl_rescan:nn
{ \__tl_set_rescan:NNnn \prg_do_nothing: \use:n }
\cs_new_protected:Npn \__tl_set_rescan:NNnn #1#2#3#4
{
\group_begin:
\exp_args:No \etex_everyeof:D { \c__tl_rescan_marker_tl \exp_not:N }
\tex_endlinechar:D \c_minus_one
\tex_newlinechar:D \c_minus_one
#3
\use:x
{
\group_end:
#1 \exp_not:N #2
{
\exp_after:wN \__tl_rescan:w
\exp_after:wN \prg_do_nothing:
\etex_scantokens:D {#4}
}
}
}
\use:x
{
\cs_new:Npn \exp_not:N \__tl_rescan:w ##1
\c__tl_rescan_marker_tl
{ \exp_not:N \exp_not:o { ##1 } }
}
\cs_generate_variant:Nn \tl_set_rescan:Nnn { Nno , Nnx }
\cs_generate_variant:Nn \tl_set_rescan:Nnn { c , cno , cnx }
\cs_generate_variant:Nn \tl_gset_rescan:Nnn { Nno , Nnx }
\cs_generate_variant:Nn \tl_gset_rescan:Nnn { c , cno }
\cs_new_protected:Npn \tl_to_lowercase:n #1
{ \tex_lowercase:D {#1} }
\cs_new_protected:Npn \tl_to_uppercase:n #1
{ \tex_uppercase:D {#1} }
\cs_new_protected_nopar:Npn \tl_replace_once:Nnn
{ \__tl_replace:NNNnn \__tl_replace_once: \tl_set:Nx }
\cs_new_protected_nopar:Npn \tl_greplace_once:Nnn
{ \__tl_replace:NNNnn \__tl_replace_once: \tl_gset:Nx }
\cs_new_protected_nopar:Npn \tl_replace_all:Nnn
{ \__tl_replace:NNNnn \__tl_replace_all: \tl_set:Nx }
\cs_new_protected_nopar:Npn \tl_greplace_all:Nnn
{ \__tl_replace:NNNnn \__tl_replace_all: \tl_gset:Nx }
\cs_generate_variant:Nn \tl_replace_once:Nnn { c }
\cs_generate_variant:Nn \tl_greplace_once:Nnn { c }
\cs_generate_variant:Nn \tl_replace_all:Nnn { c }
\cs_generate_variant:Nn \tl_greplace_all:Nnn { c }
\cs_new_protected:Npn \__tl_replace:NNNnn #1#2#3#4#5
{
\tl_if_empty:nTF {#4}
{
\__msg_kernel_error:nnx { kernel } { empty-search-pattern }
{ \tl_to_str:n {#5} }
}
{
\group_align_safe_begin:
\cs_set:Npx \__tl_tmp:w ##1##2 #4
{
##2
\exp_not:N \q_mark
\exp_not:N \use_none_delimit_by_q_stop:w
\exp_not:n { \exp_not:n {#5} }
##1
}
\group_align_safe_end:
#2 #3
{
\exp_after:wN #1
#3 \q_mark #4 \q_stop
}
}
}
\cs_new:Npn \__tl_replace:w #1 \q_mark #2 { \exp_not:o {#1} }
\cs_new_nopar:Npn \__tl_replace_all:
{
\exp_after:wN \__tl_replace:w
\__tl_tmp:w \__tl_replace_all: \prg_do_nothing:
}
\cs_new_nopar:Npn \__tl_replace_once:
{
\exp_after:wN \__tl_replace:w
\__tl_tmp:w { \__tl_replace_once_end:w \prg_do_nothing: } \prg_do_nothing:
}
\cs_new:Npn \__tl_replace_once_end:w #1 \q_mark #2 \q_stop
{ \exp_not:o {#1} }
\cs_new_protected:Npn \tl_remove_once:Nn #1#2
{ \tl_replace_once:Nnn #1 {#2} { } }
\cs_new_protected:Npn \tl_gremove_once:Nn #1#2
{ \tl_greplace_once:Nnn #1 {#2} { } }
\cs_generate_variant:Nn \tl_remove_once:Nn { c }
\cs_generate_variant:Nn \tl_gremove_once:Nn { c }
\cs_new_protected:Npn \tl_remove_all:Nn #1#2
{ \tl_replace_all:Nnn #1 {#2} { } }
\cs_new_protected:Npn \tl_gremove_all:Nn #1#2
{ \tl_greplace_all:Nnn #1 {#2} { } }
\cs_generate_variant:Nn \tl_remove_all:Nn { c }
\cs_generate_variant:Nn \tl_gremove_all:Nn { c }
\prg_new_conditional:Npnn \tl_if_blank:n #1 { p , T , F , TF }
{ \__tl_if_empty_return:o { \use_none:n #1 ? } }
\cs_generate_variant:Nn \tl_if_blank_p:n { V }
\cs_generate_variant:Nn \tl_if_blank:nT { V }
\cs_generate_variant:Nn \tl_if_blank:nF { V }
\cs_generate_variant:Nn \tl_if_blank:nTF { V }
\cs_generate_variant:Nn \tl_if_blank_p:n { o }
\cs_generate_variant:Nn \tl_if_blank:nT { o }
\cs_generate_variant:Nn \tl_if_blank:nF { o }
\cs_generate_variant:Nn \tl_if_blank:nTF { o }
\prg_new_conditional:Npnn \tl_if_empty:N #1 { p , T , F , TF }
{
\if_meaning:w #1 \c_empty_tl
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\cs_generate_variant:Nn \tl_if_empty_p:N { c }
\cs_generate_variant:Nn \tl_if_empty:NT { c }
\cs_generate_variant:Nn \tl_if_empty:NF { c }
\cs_generate_variant:Nn \tl_if_empty:NTF { c }
\prg_new_conditional:Npnn \tl_if_empty:n #1 { p , TF , T , F }
{
\exp_after:wN \if_meaning:w \exp_after:wN \q_nil \tl_to_str:n {#1} \q_nil
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\cs_generate_variant:Nn \tl_if_empty_p:n { V }
\cs_generate_variant:Nn \tl_if_empty:nTF { V }
\cs_generate_variant:Nn \tl_if_empty:nT { V }
\cs_generate_variant:Nn \tl_if_empty:nF { V }
\cs_new:Npn \__tl_if_empty_return:o #1
{
\exp_after:wN \if_meaning:w \exp_after:wN \q_nil
\tl_to_str:n \exp_after:wN {#1} \q_nil
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\prg_new_conditional:Npnn \tl_if_empty:o #1 { p , TF , T , F }
{ \__tl_if_empty_return:o {#1} }
\prg_new_conditional:Npnn \tl_if_eq:NN #1#2 { p , T , F , TF }
{
\if_meaning:w #1 #2
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\cs_generate_variant:Nn \tl_if_eq_p:NN { Nc , c , cc }
\cs_generate_variant:Nn \tl_if_eq:NNTF { Nc , c , cc }
\cs_generate_variant:Nn \tl_if_eq:NNT { Nc , c , cc }
\cs_generate_variant:Nn \tl_if_eq:NNF { Nc , c , cc }
\prg_new_protected_conditional:Npnn \tl_if_eq:nn #1#2 { T , F , TF }
{
\group_begin:
\tl_set:Nn \l__tl_internal_a_tl {#1}
\tl_set:Nn \l__tl_internal_b_tl {#2}
\if_meaning:w \l__tl_internal_a_tl \l__tl_internal_b_tl
\group_end:
\prg_return_true:
\else:
\group_end:
\prg_return_false:
\fi:
}
\tl_new:N \l__tl_internal_a_tl
\tl_new:N \l__tl_internal_b_tl
\cs_new_protected_nopar:Npn \tl_if_in:NnT { \exp_args:No \tl_if_in:nnT }
\cs_new_protected_nopar:Npn \tl_if_in:NnF { \exp_args:No \tl_if_in:nnF }
\cs_new_protected_nopar:Npn \tl_if_in:NnTF { \exp_args:No \tl_if_in:nnTF }
\cs_generate_variant:Nn \tl_if_in:NnT { c }
\cs_generate_variant:Nn \tl_if_in:NnF { c }
\cs_generate_variant:Nn \tl_if_in:NnTF { c }
\prg_new_protected_conditional:Npnn \tl_if_in:nn #1#2 { T , F , TF }
{
\cs_set:Npn \__tl_tmp:w ##1 #2 { }
\tl_if_empty:oTF { \__tl_tmp:w #1 {} {} #2 }
{ \prg_return_false: } { \prg_return_true: }
}
\cs_generate_variant:Nn \tl_if_in:nnT { V , o , no }
\cs_generate_variant:Nn \tl_if_in:nnF { V , o , no }
\cs_generate_variant:Nn \tl_if_in:nnTF { V , o , no }
\cs_new:Npn \tl_if_single_p:N { \exp_args:No \tl_if_single_p:n }
\cs_new:Npn \tl_if_single:NT { \exp_args:No \tl_if_single:nT }
\cs_new:Npn \tl_if_single:NF { \exp_args:No \tl_if_single:nF }
\cs_new:Npn \tl_if_single:NTF { \exp_args:No \tl_if_single:nTF }
\prg_new_conditional:Npnn \tl_if_single:n #1 { p , T , F , TF }
{ \__str_if_eq_x_return:nn { \exp_not:o { \use_none:nn #1 ?? } } {?} }
\cs_new:Npn \tl_case:Nnn #1#2#3
{
\tex_romannumeral:D
\__tl_case:Nw #1 #2 #1 {#3} \q_recursion_stop
}
\cs_new:Npn \__tl_case:Nw #1#2#3
{
\tl_if_eq:NNTF #1 #2
{ \__tl_case_end:nw {#3} }
{ \__tl_case:Nw #1 }
}
\cs_generate_variant:Nn \tl_case:Nnn { c }
\cs_new_eq:NN \__tl_case_end:nw \__prg_case_end:nw
\cs_new:Npn \tl_map_function:nN #1#2
{
\__tl_map_function:Nn #2 #1
\q_recursion_tail
\__prg_break_point:Nn \tl_map_break: { }
}
\cs_new_nopar:Npn \tl_map_function:NN
{ \exp_args:No \tl_map_function:nN }
\cs_new:Npn \__tl_map_function:Nn #1#2
{
\__quark_if_recursion_tail_break:nN {#2} \tl_map_break:
#1 {#2} \__tl_map_function:Nn #1
}
\cs_generate_variant:Nn \tl_map_function:NN { c }
\cs_new_protected:Npn \tl_map_inline:nn #1#2
{
\int_gincr:N \g__prg_map_int
\cs_gset:cpn { __prg_map_ \int_use:N \g__prg_map_int :w } ##1 {#2}
\exp_args:Nc \__tl_map_function:Nn
{ __prg_map_ \int_use:N \g__prg_map_int :w }
#1 \q_recursion_tail
\__prg_break_point:Nn \tl_map_break: { \int_gdecr:N \g__prg_map_int }
}
\cs_new_protected:Npn \tl_map_inline:Nn
{ \exp_args:No \tl_map_inline:nn }
\cs_generate_variant:Nn \tl_map_inline:Nn { c }
\cs_new_protected:Npn \tl_map_variable:nNn #1#2#3
{
\__tl_map_variable:Nnn #2 {#3} #1
\q_recursion_tail
\__prg_break_point:Nn \tl_map_break: { }
}
\cs_new_protected_nopar:Npn \tl_map_variable:NNn
{ \exp_args:No \tl_map_variable:nNn }
\cs_new_protected:Npn \__tl_map_variable:Nnn #1#2#3
{
\tl_set:Nn #1 {#3}
\__quark_if_recursion_tail_break:NN #1 \tl_map_break:
\use:n {#2}
\__tl_map_variable:Nnn #1 {#2}
}
\cs_generate_variant:Nn \tl_map_variable:NNn { c }
\cs_new_nopar:Npn \tl_map_break:
{ \__prg_map_break:Nn \tl_map_break: { } }
\cs_new_nopar:Npn \tl_map_break:n
{ \__prg_map_break:Nn \tl_map_break: }
\cs_new_eq:NN \tl_to_str:n \etex_detokenize:D
\cs_new:Npn \tl_to_str:N #1 { \etex_detokenize:D \exp_after:wN {#1} }
\cs_generate_variant:Nn \tl_to_str:N { c }
\cs_new:Npn \tl_use:N #1
{
\tl_if_exist:NTF #1 {#1}
{ \__msg_kernel_expandable_error:nnn { kernel } { bad-variable } {#1} }
}
\cs_generate_variant:Nn \tl_use:N { c }
\cs_new:Npn \tl_count:n #1
{
\int_eval:n
{ 0 \tl_map_function:nN {#1} \__tl_count:n }
}
\cs_new:Npn \tl_count:N #1
{
\int_eval:n
{ 0 \tl_map_function:NN #1 \__tl_count:n }
}
\cs_new:Npn \__tl_count:n #1 { + \c_one }
\cs_generate_variant:Nn \tl_count:n { V , o }
\cs_generate_variant:Nn \tl_count:N { c }
\cs_new:Npn \tl_reverse_items:n #1
{
\__tl_reverse_items:nwNwn #1 ?
\q_mark \__tl_reverse_items:nwNwn
\q_mark \__tl_reverse_items:wn
\q_stop { }
}
\cs_new:Npn \__tl_reverse_items:nwNwn #1 #2 \q_mark #3 #4 \q_stop #5
{
#3 #2
\q_mark \__tl_reverse_items:nwNwn
\q_mark \__tl_reverse_items:wn
\q_stop { {#1} #5 }
}
\cs_new:Npn \__tl_reverse_items:wn #1 \q_stop #2
{ \exp_not:o { \use_none:nn #2 } }
\cs_new:Npn \tl_trim_spaces:n #1
{ \__tl_trim_spaces:nn { \q_mark #1 } \exp_not:o }
\cs_new_protected:Npn \tl_trim_spaces:N #1
{ \tl_set:Nx #1 { \exp_args:No \tl_trim_spaces:n {#1} } }
\cs_new_protected:Npn \tl_gtrim_spaces:N #1
{ \tl_gset:Nx #1 { \exp_args:No \tl_trim_spaces:n {#1} } }
\cs_generate_variant:Nn \tl_trim_spaces:N { c }
\cs_generate_variant:Nn \tl_gtrim_spaces:N { c }
\cs_set:Npn \__tl_tmp:w #1
{
\cs_new:Npn \__tl_trim_spaces:nn ##1
{
\__tl_trim_spaces_auxi:w
##1
\q_nil
\q_mark #1 { }
\q_mark \__tl_trim_spaces_auxii:w
\__tl_trim_spaces_auxiii:w
#1 \q_nil
\__tl_trim_spaces_auxiv:w
\q_stop
}
\cs_new:Npn \__tl_trim_spaces_auxi:w ##1 \q_mark #1 ##2 \q_mark ##3
{
##3
\__tl_trim_spaces_auxi:w
\q_mark
##2
\q_mark #1 {##1}
}
\cs_new:Npn \__tl_trim_spaces_auxii:w
\__tl_trim_spaces_auxi:w \q_mark \q_mark ##1
{
\__tl_trim_spaces_auxiii:w
##1
}
\cs_new:Npn \__tl_trim_spaces_auxiii:w ##1 #1 \q_nil ##2
{
##2
##1 \q_nil
\__tl_trim_spaces_auxiii:w
}
\cs_new:Npn \__tl_trim_spaces_auxiv:w ##1 \q_nil ##2 \q_stop ##3
{ ##3 { \use_none:n ##1 } }
}
\__tl_tmp:w { ~ }
\cs_new:Npn \__tl_act:NNNnn #1#2#3#4#5
{
\group_align_safe_begin:
\__tl_act_loop:w #5 \q__tl_act_mark \q__tl_act_stop
{#4} #1 #2 #3
\__tl_act_result:n { }
}
\cs_new:Npn \__tl_act_loop:w #1 \q__tl_act_stop
{
\tl_if_head_is_N_type:nTF {#1}
{ \__tl_act_normal:NwnNNN }
{
\tl_if_head_is_group:nTF {#1}
{ \__tl_act_group:nwnNNN }
{ \__tl_act_space:wwnNNN }
}
#1 \q__tl_act_stop
}
\cs_new:Npn \__tl_act_normal:NwnNNN #1 #2 \q__tl_act_stop #3#4
{
\if_meaning:w \q__tl_act_mark #1
\exp_after:wN \__tl_act_end:wn
\fi:
#4 {#3} #1
\__tl_act_loop:w #2 \q__tl_act_stop
{#3} #4
}
\cs_new:Npn \__tl_act_end:wn #1 \__tl_act_result:n #2
{ \group_align_safe_end: \c_zero #2 }
\cs_new:Npn \__tl_act_group:nwnNNN #1 #2 \q__tl_act_stop #3#4#5
{
#5 {#3} {#1}
\__tl_act_loop:w #2 \q__tl_act_stop
{#3} #4 #5
}
\exp_last_unbraced:NNo
\cs_new:Npn \__tl_act_space:wwnNNN \c_space_tl #1 \q__tl_act_stop #2#3#4#5
{
#5 {#2}
\__tl_act_loop:w #1 \q__tl_act_stop
{#2} #3 #4 #5
}
\cs_new:Npn \__tl_act_output:n #1 #2 \__tl_act_result:n #3
{ #2 \__tl_act_result:n { #3 #1 } }
\cs_new:Npn \__tl_act_reverse_output:n #1 #2 \__tl_act_result:n #3
{ #2 \__tl_act_result:n { #1 #3 } }
\cs_new:Npn \tl_reverse:n #1
{
\etex_unexpanded:D \exp_after:wN
{
\tex_romannumeral:D
\__tl_act:NNNnn
\__tl_reverse_normal:nN
\__tl_reverse_group_preserve:nn
\__tl_reverse_space:n
{ }
{#1}
}
}
\cs_generate_variant:Nn \tl_reverse:n { o , V }
\cs_new:Npn \__tl_reverse_normal:nN #1#2
{ \__tl_act_reverse_output:n {#2} }
\cs_new:Npn \__tl_reverse_group_preserve:nn #1#2
{ \__tl_act_reverse_output:n { {#2} } }
\cs_new:Npn \__tl_reverse_space:n #1
{ \__tl_act_reverse_output:n { ~ } }
\cs_new_protected:Npn \tl_reverse:N #1
{ \tl_set:Nx #1 { \exp_args:No \tl_reverse:n { #1 } } }
\cs_new_protected:Npn \tl_greverse:N #1
{ \tl_gset:Nx #1 { \exp_args:No \tl_reverse:n { #1 } } }
\cs_generate_variant:Nn \tl_reverse:N { c }
\cs_generate_variant:Nn \tl_greverse:N { c }
\cs_new:Npn \tl_head:n #1
{
\etex_unexpanded:D
\if_false: { \fi: \__tl_head_auxi:nw #1 { } \q_stop }
}
\cs_new:Npn \__tl_head_auxi:nw #1#2 \q_stop
{ \exp_after:wN \__tl_head_auxii:nw \exp_after:wN { \if_false: } \fi: {#1} }
\cs_new:Npn \__tl_head_auxii:nw #1
{
\exp_after:wN \if_meaning:w \exp_after:wN \q_nil
\tl_to_str:n \exp_after:wN { \use_none:n #1 } \q_nil
\exp_after:wN \use_i:nn
\else:
\exp_after:wN \use_ii:nn
\fi:
{#1}
{ \if_false: { \fi: \__tl_head_auxi:nw #1 } }
}
\cs_generate_variant:Nn \tl_head:n { V , v , f }
\cs_new:Npn \tl_head:w #1#2 \q_stop {#1}
\cs_new_nopar:Npn \tl_head:N { \exp_args:No \tl_head:n }
\cs_new:Npn \tl_tail:n #1
{
\etex_unexpanded:D
\tl_if_blank:nTF {#1}
{ { } }
{ \exp_after:wN { \use_none:n #1 } }
}
\cs_generate_variant:Nn \tl_tail:n { V , v , f }
\cs_new_nopar:Npn \tl_tail:N { \exp_args:No \tl_tail:n }
\cs_new:Npn \str_head:n #1
{
\exp_after:wN \__str_head:w
\tl_to_str:n {#1}
{ { } } ~ \q_stop
}
\cs_new:Npn \__str_head:w #1 ~ %
{ \tl_head:w #1 { ~ } }
\cs_new:Npn \str_tail:n #1
{
\exp_after:wN \__str_tail:w
\reverse_if:N \if_charcode:w
\scan_stop: \tl_to_str:n {#1} X X \q_stop
}
\cs_new:Npn \__str_tail:w #1 X #2 \q_stop { \fi: #1 }
\prg_new_conditional:Npnn \tl_if_head_eq_charcode:nN #1#2 { p , T , F , TF }
{
\if_charcode:w
\exp_not:N #2
\tl_if_head_is_N_type:nTF { #1 ? }
{
\exp_after:wN \exp_not:N
\tl_head:w #1 { ? \use_none:nn } \q_stop
}
{ \str_head:n {#1} }
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\cs_generate_variant:Nn \tl_if_head_eq_charcode_p:nN { f }
\cs_generate_variant:Nn \tl_if_head_eq_charcode:nNTF { f }
\cs_generate_variant:Nn \tl_if_head_eq_charcode:nNT { f }
\cs_generate_variant:Nn \tl_if_head_eq_charcode:nNF { f }
\prg_new_conditional:Npnn \tl_if_head_eq_catcode:nN #1 #2 { p , T , F , TF }
{
\if_catcode:w
\exp_not:N #2
\tl_if_head_is_N_type:nTF { #1 ? }
{
\exp_after:wN \exp_not:N
\tl_head:w #1 { ? \use_none:nn } \q_stop
}
{
\tl_if_head_is_group:nTF {#1}
{ \c_group_begin_token }
{ \c_space_token }
}
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\prg_new_conditional:Npnn \tl_if_head_eq_meaning:nN #1#2 { p , T , F , TF }
{
\tl_if_head_is_N_type:nTF { #1 ? }
{ \__tl_if_head_eq_meaning_normal:nN }
{ \__tl_if_head_eq_meaning_special:nN }
{#1} #2
}
\cs_new:Npn \__tl_if_head_eq_meaning_normal:nN #1 #2
{
\exp_after:wN \if_meaning:w
\tl_head:w #1 { ?? \use_none:nnn } \q_stop #2
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
\cs_new:Npn \__tl_if_head_eq_meaning_special:nN #1 #2
{
\if_charcode:w \str_head:n {#1} \exp_not:N #2
\exp_after:wN \use:n
\else:
\prg_return_false:
\exp_after:wN \use_none:n
\fi:
{
\if_catcode:w \exp_not:N #2
\tl_if_head_is_group:nTF {#1}
{ \c_group_begin_token }
{ \c_space_token }
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
}
\prg_new_conditional:Npnn \tl_if_head_is_N_type:n #1 { p , T , F , TF }
{
\__str_if_eq_x_return:nn
{ \exp_not:o { \use:n #1 { } } }
{ \exp_not:n { #1 { } } }
}
\prg_new_conditional:Npnn \tl_if_head_is_group:n #1 { p , T , F , TF }
{
\if_catcode:w *
\exp_after:wN \use_none:n
\exp_after:wN {
\exp_after:wN {
\token_to_str:N #1 ?
}
}
*
\prg_return_false:
\else:
\prg_return_true:
\fi:
}
\prg_new_conditional:Npnn \tl_if_head_is_space:n #1 { p , T , F , TF }
{
\tex_romannumeral:D \if_false: { \fi:
\__tl_if_head_is_space:w ? #1 ? ~ }
}
\cs_new:Npn \__tl_if_head_is_space:w #1 ~
{
\tl_if_empty:oTF { \use_none:n #1 }
{ \exp_after:wN \c_zero \exp_after:wN \prg_return_true: }
{ \exp_after:wN \c_zero \exp_after:wN \prg_return_false: }
\exp_after:wN \use_none:n \exp_after:wN { \if_false: } \fi:
}
\cs_new_protected:Npn \tl_show:N #1
{
\tl_if_exist:NTF #1
{ \cs_show:N #1 }
{
\__msg_kernel_error:nnx { kernel } { variable-not-defined }
{ \token_to_str:N #1 }
}
}
\cs_generate_variant:Nn \tl_show:N { c }
\cs_new_protected:Npn \tl_show:n #1
{ \__msg_show_variable:n { > ~ \tl_to_str:n {#1} } }
\tl_new:N \g_tmpa_tl
\tl_new:N \g_tmpb_tl
\tl_new:N \l_tmpa_tl
\tl_new:N \l_tmpb_tl
%%
%%
%% End of file `l3tl.sty'.
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