%%
%% This is file `l3quark.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% l3quark.dtx  (with options: `package,trace')
%% 
%% 
%% 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: l3quark.dtx Copyright (C) 1990-2006 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/cgi-bin/cvsweb.cgi/
%%
%% 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: l3quark.dtx 761 2008-08-04 21:35:13Z morten $
          {L3 Experimental Quark Commands}
\ProvidesExplPackage
  {\filename}{\filedate}{\fileversion}{\filedescription}
\RequirePackage{l3expan}\par
\def_new:Npn \quark_new:N #1{\tlp_new:Nn #1{#1}}
\quark_new:N \q_stop
\quark_new:N \q_no_value
\quark_new:N \q_nil
\quark_new:N\q_error
\quark_new:N\q_mark
\quark_new:N\q_recursion_tail
\quark_new:N\q_recursion_stop
\def_long_new:Npn \quark_if_recursion_tail_stop:n #1 {
  \exp_after:NN\if_meaning:NN
    \quark_if_recursion_tail_aux:w #1?\q_nil\q_recursion_tail\q_recursion_tail
    \exp_after:NN \use_none_delimit_by_q_recursion_stop:w
  \fi:
}
\def_long_new:Npn \quark_if_recursion_tail_stop:N #1 {
  \if_meaning:NN#1\q_recursion_tail
    \exp_after:NN \use_none_delimit_by_q_recursion_stop:w
  \fi:
}
\def_new:Npn \quark_if_recursion_tail_stop:o{
  \exp_args:No\quark_if_recursion_tail_stop:n
}
\def_long_new:Npn \quark_if_recursion_tail_stop_do:nn #1#2 {
  \exp_after:NN\if_meaning:NN
    \quark_if_recursion_tail_aux:w #1?\q_nil\q_recursion_tail\q_recursion_tail
    \exp_after:NN \use_arg_i_delimit_by_q_recursion_stop:nw
  \else:
    \exp_after:NN\use_none:n
  \fi:
  {#2}
}
\def_long_new:Npn \quark_if_recursion_tail_stop_do:Nn #1#2 {
  \if_meaning:NN #1\q_recursion_tail
    \exp_after:NN \use_arg_i_delimit_by_q_recursion_stop:nw
  \else:
    \exp_after:NN\use_none:n
  \fi:
  {#2}
}
\def_new:Npn \quark_if_recursion_tail_stop_do:on{
  \exp_args:No\quark_if_recursion_tail_stop_do:nn
}
\def_long_new:Npn \quark_if_recursion_tail_aux:w
  #1#2\q_nil\q_recursion_tail{#1}
\def_long_new:Npn\use_none_delimit_by_q_recursion_stop:w
  #1\q_recursion_stop {}
\def_long_new:Npn\use_arg_i_delimit_by_q_recursion_stop:nw
  #1#2\q_recursion_stop {#1}
\def_long_test_function_new:npn {quark_if_no_value:N} #1 {
     \if_meaning:NN\q_no_value#1}
\def_long_new:Npn \quark_if_no_value_p:N #1{
  \if_meaning:NN \q_no_value #1 \c_true
  \else: \c_false \fi:
}
\cs_if_really_free:cTF{pdf_strcmp:D}{
  \def_long_new:Npn \quark_if_no_value_p:n #1{
    \if:w \exp_args:No \str_if_eq_var_p:nf
      {\token_to_string:N\q_no_value\space}
      {\tlist_to_str:n{#1}}
      \c_true
    \else:
      \c_false
    \fi:
  }
}
{
  \def_long_new:Npn \quark_if_no_value_p:n #1{
    \if_num:w
    \pdf_strcmp:D {\exp_not:N \q_no_value}{\exp_not:n{#1}}=\c_zero
    \c_true \else: \c_false \fi:
  }
}
\def_long_test_function_new:npn {quark_if_no_value:n} #1 {
  \if:w \quark_if_no_value_p:n{#1}}
\def_long:Npn \quark_if_no_value:nFT #1{
  \if:w \quark_if_no_value_p:n{#1}
      \exp_after:NN\use_arg_ii:nn
    \else:
      \exp_after:NN\use_arg_i:nn
    \fi:
}
\def_long_new:Npn \quark_if_nil_p:N #1{
  \if_meaning:NN \q_nil #1 \c_true
  \else: \c_false \fi:
}
\def_long_test_function_new:npn {quark_if_nil:N}#1{
  \if_meaning:NN\q_nil#1}
\cs_if_really_free:cTF{pdf_strcmp:D}{
  \def_long_new:Npn \quark_if_nil_p:n #1{
    \if:w \exp_args:No \str_if_eq_var_p:nf
      {\token_to_string:N\q_nil\space}
      {\tlist_to_str:n{#1}}
      \c_true
    \else:
      \c_false
    \fi:
  }
}
{
  \def_long_new:Npn \quark_if_nil_p:n #1{
    \if_num:w
    \pdf_strcmp:D {\exp_not:N \q_nil}{\exp_not:n{#1}}=\c_zero
    \c_true \else: \c_false \fi:
  }
}
\def_long_test_function_new:npn {quark_if_nil:n} #1 {
  \if:w \quark_if_nil_p:n{#1}}
\def_new:Npn \quark_if_nil_p:o{\exp_args:No\quark_if_nil_p:n}
\def_new:Npn \quark_if_nil:oTF{\exp_args:No\quark_if_nil:nTF}
\def_new:Npn \quark_if_nil:oT {\exp_args:No\quark_if_nil:nT}
\def_new:Npn \quark_if_nil:oF {\exp_args:No\quark_if_nil:nF}
%% 
%%
%% End of file `l3quark.sty'.
