%%
%% This is file `ctex-engine-luatex.def',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% ctex.dtx  (with options: `luatex')
%% 
%%     Copyright (C) 2003--2019
%%     CTEX.ORG and any individual authors listed in the documentation.
%% ------------------------------------------------------------------------------
%% 
%%     This work may be distributed and/or modified under the
%%     conditions of the LaTeX Project Public License, either
%%     version 1.3c of this license or (at your option) any later
%%     version. This version of this license is in
%%        http://www.latex-project.org/lppl/lppl-1-3c.txt
%%     and the latest version of this license is in
%%        http://www.latex-project.org/lppl.txt
%%     and version 1.3 or later is part of all distributions of
%%     LaTeX version 2005/12/01 or later.
%% 
%%     This work has the LPPL maintenance status `maintained'.
%% 
%%     The Current Maintainers of this work are Leo Liu, Qing Lee and Liam Huang.
%% 
%% ------------------------------------------------------------------------------
%% 
\GetIdInfo$Id: ctex.dtx 735dfe2 2019-05-29 21:42:29 +0800 Qing Lee <sobenlee@gmail.com> $
  {LuaLaTeX adapter (CTEX)}
\ProvidesExplFile{ctex-engine-luatex.def}
  {\ExplFileDate}{2.4.16}{\ExplFileDescription}
\msg_new:nnn { ctex } { luatexja-loaded }
  {
    Package~`luatexja'~can~not~be~loaded~before~`ctex'.\\
    Loading~file~`#1'~will~abort!
  }
\@ifpackageloaded { luatexja }
  { \msg_critical:nnx { ctex } { luatexja-loaded } { \g_file_curr_name_str } }
  { \tl_const:cn { ver@ltj-latex.\@pkgextension } { 9999/99/99 } }
\RequirePackage { luatexja }
\@ifpackagelater { luatexja } { 2015/09/21 } { }
  { \msg_error:nnn { ctex } { package-too-old } { luatexja } }
\RequirePackage { fontspec }
\@ifpackagelater { fontspec } { 2014/05/25 } { }
  { \msg_error:nnn { ctex } { package-too-old } { fontspec } }
\ExplSyntaxOff
\ltjdefcharrange{1}{"80-"36F, "1E00-"1EFF}
\ltjdefcharrange{2}{"370-"4FF, "1F00-"1FFF}
\ltjdefcharrange{3}{%
  "2000-"206F, "2070-"243F, "2460-"24FF, "2500-"27BF, "2900-"29FF,
  "2B00-"2BFF}
\ltjdefcharrange{4}{%
   "500-"10FF, "1200-"1DFF, "2440-"245F, "27C0-"28FF, "2A00-"2AFF,
  "2C00-"2E7F, "4DC0-"4DFF, "A4D0-"A82F, "A840-"ABFF, "FB00-"FE0F,
  "FE20-"FE2F, "FE70-"FEFF, "10000-"1FFFF, "E000-"F8FF} % non-Japanese
\ltjdefcharrange{5}{"D800-"DFFF, "E0000-"E00FF, "E01F0-"10FFFF}
\ltjdefcharrange{6}{%
  "2E80-"2EFF, "3000-"30FF, "3190-"319F, "31F0-"4DBF,
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\ltjdefcharrange{7}{%
  "1100-"11FF, "2F00-"2FFF, "3100-"31EF, "A000-"A4CF,
  "A830-"A83F, "AC00-"D7FF}
\ltjdefcharrange{8}{"A7, "A8, "B0, "B1, "B4, "B6, "D7, "F7}
\ltjdefcharrange{9}{%
  "2018, "2019, "201C, "201D, "2013, "2014, "2025, "2026, "2027, "2E3A}
\ltjsetparameter{jacharrange={-1, -2, -3, -4, -5, +6, +7, -8, +9}}
\directlua{for x=128,255 do luatexja.math.is_math_letters[x] = true end}
\directlua{
  local s = kpse.find_file('ltj-kinsoku.lua', 'tex')
  luatexja.stack.charprop_stack_table[0] = s and dofile(s) or {}
}
\ltjsetparameter{kanjiskip=\z@ plus .4pt minus .5pt,
  xkanjiskip=.25\zw plus 1pt minus 1pt,
  autospacing, autoxspacing, jacharrange={-1},
  yalbaselineshift=\z@, yjabaselineshift=\z@,
  jcharwidowpenalty=500, differentjfm=paverage
}
\ExplSyntaxOn
\RequirePackage { xunicode-addon }
\AtBeginUTFCommand
  {
    \group_begin:
    \lua_now:e { tex.globaldefs = 0 }
    \ltj@allalchar
  }
\AtEndUTFCommand { \group_end: }
\cs_set_protected:Npn \fontspec_visible_space:
  {
    \tex_iffontchar:D \tex_font:D "2423 \exp_stop_f:
      \ltjalchar "2423 \exp_stop_f:
    \else:
      \fontspec_visible_space_fallback:
    \fi:
  }
\ctex_at_end_package:nn { listings }
  {
    \use:x
      {
        \exp_not:N \RequirePackage { lltjp-listings }
        \tl_set:Nn \exp_not:N \lstlistingname
          { \exp_not:o { \lstlistingname } }
        \tl_set:Nn \exp_not:N \lstlistlistingname
          { \exp_not:o { \lstlistlistingname } }
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_select_font:
  {
    \cs_if_exist_use:cF { \l__ctex_ltj_current_font_tl }
      { \tl_if_empty:NF \CJK@family { \__ctex_ltj_select_font_aux: } }
  }
\tl_new:N \CJK@family
\tl_new:N \l__ctex_ltj_current_font_tl
\tl_set:Nn \l__ctex_ltj_current_font_tl
  { \CJK@encoding / \CJK@family / \f@series / \f@shape / \f@size }
\cs_new_protected_nopar:Npn \__ctex_ltj_select_font_aux:
  {
    \group_begin:
      \tl_set_eq:NN \f@encoding \CJK@encoding
      \tl_set_eq:NN \f@family \CJK@family
      \__ctex_ltj_push_fontname:n { \use:c { \curr@fontshape / \f@size } }
      \ctex_ltj_pickup_font:
    \group_end:
    \font@name
    \__ctex_ltj_pop_fontname:
    \cs_if_exist:cF { \l__ctex_ltj_current_font_tl }
      { \__ctex_ltj_select_font_aux: }
  }
\cs_new_protected_nopar:Npn \__ctex_ltj_push_fontname:n #1
  {
    \cs_gset_eq:NN \__ctex_ltj_save_fontname:w \font@name
    \cs_gset_nopar:Npx \font@name {#1}
  }
\cs_new_protected_nopar:Npn \__ctex_ltj_pop_fontname:
  { \cs_gset_eq:NN \font@name \__ctex_ltj_save_fontname:w }
\cs_new_protected_nopar:Npn \ctex_ltj_pickup_font:
  {
    \exp_after:wN \cs_if_exist:NF \font@name
      {
        \group_begin:
          \cs_set_eq:NN \extract@font \ctex_ltj_extract_font:
          \cs_set_eq:NN \do@subst@correction \ctex_ltj_subst_font:
          \define@newfont
        \group_end:
      }
  }
\cs_new_eq:NN \pickup@jfont \ctex_ltj_pickup_font:
\cs_new_protected_nopar:Npn \ctex_ltj_extract_font:
  {
    \get@external@font
    \ctex_ltj_if_alternate_shape_exist:nT { \curr@fontshape }
      {
        \tl_set:Nx \external@font
          { \exp_after:wN \__ctex_ltj_patch_external_font:w \external@font }
      }
    \exp_after:wN \globaljfont \font@name \external@font \scan_stop:
    \font@name
    \lua_now:e { font.current(tex.getattribute('ltj@curjfnt')) }
    \use:c { \f@encoding + \f@family }
    \use:c { \curr@fontshape }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_subst_font:
  {
    \ctex_ltj_if_alternate_shape_exist:nF { \curr@fontshape }
      {
        \group_begin:
        \tl_set_eq:NN \CJK@family \f@family
        \cs_if_exist:cF { \l__ctex_ltj_current_font_tl  }
          {
            \cs_gset_protected_nopar:Npx \subst@correction
              {
                \cs_new_eq:NN
                  \exp_not:c { \l__ctex_ltj_current_font_tl }
                  \font@name
              }
            \group_insert_after:N \group_insert_after:N
            \group_insert_after:N \subst@correction
          }
        \group_end:
      }
  }
\prg_new_conditional:Npnn \ctex_ltj_if_alternate_shape_exist:n #1 { T , F , TF }
  {
    \lua_now:e { luatexja.jfont.does_alt_set ('\lua_escape:e {#1}') }
      \prg_return_true: \else: \prg_return_false: \fi:
  }
\cs_new_nopar:Npn \__ctex_ltj_patch_external_font:w #1 ~ at
  { #1 \lua_now:e { luatexja.jfont.print_aftl_address() } ~ at }
\cs_new_protected_nopar:Npn \ctex_ltj_select_alternate_font:
  {
    \ctex_ltj_if_alternate_shape_exist:nT { \l__ctex_ltj_current_shape_tl }
      {
        \lua_now:e
          {
            luatexja.jfont.output_alt_font_cmd
              ('y', '\lua_escape:e { \l__ctex_ltj_current_shape_tl }')
          }
        \lua_now:e { luatexja.jfont.pickup_alt_font_a ('\f@size') }
      }
  }
\tl_new:N \l__ctex_ltj_current_shape_tl
\tl_set:Nn \l__ctex_ltj_current_shape_tl
  { \CJK@encoding / \CJK@family / \f@series / \f@shape }
\cs_new_protected_nopar:Npn \ltj@pickup@altfont@auxy #1
  {
    \cs_if_exist:cF { #1/\f@size }
      {
        \group_begin:
          \use:x { \exp_not:N \split@name #1 / \f@size } \@nil
          \__ctex_ltj_push_fontname:n { \use:c { \curr@fontshape / \f@size } }
          \ctex_ltj_pickup_font:
        \group_end:
        \__ctex_ltj_pop_fontname:
      }
  }
\cs_new_protected_nopar:Npn \ltj@pickup@altfont@copy #1#2
  {
    \ltj@@getjfontnumber #1
    \lua_now:e
      {
        luatexja.jfont.pickup_alt_font_b
          ( \int_use:N \ltj@tempcntc, '\lua_escape:e {#2}' )
      }
  }
\cs_new:Npn \ctex_ltj_if_jfont:nTF #1
  {
    \lua_now:e
      { luatexja.jfont.is_kenc( string.match('\lua_escape:e {#1}', '[^/]+') ) }
    \ifin@ \exp_after:wN \use_i:nn \else: \exp_after:wN \use_ii:nn \fi:
  }
\cs_new:Npn \ctex_ltj_if_jfont_math:NTF #1
  { \exp_after:wN \__ctex_ltj_if_jfont_math:w \token_to_str:N #1 \q_stop }
\group_begin:
  \char_set_catcode_other:N M
  \cs_new:Npn \__ctex_ltj_if_jfont_math:w #1 M #2#3 \q_stop
    { \ctex_ltj_if_jfont:nTF {#3} }
\group_end:
\cs_new_protected_nopar:Npn \ctex_ltj_get_and_define_fonts:nN #1#2
  {
    \ctex_ltj_if_jfont:nTF { \token_to_str:N #2 }
      { \ctex_ltj_get_and_define_fonts_ja:nN }
      { \ctex_ltj_get_and_define_fonts_al:nN }
      {#1} #2
  }
\cs_new_eq:NN \ctex_ltj_get_and_define_fonts_al:nN \getanddefine@fonts
\cs_set_eq:NN \getanddefine@fonts \ctex_ltj_get_and_define_fonts:nN
\cs_new_protected_nopar:Npn \ctex_ltj_get_and_define_fonts_ja:nN #1#2
  {
    \tl_gset:Nx \font@name { \use:c { \token_to_str:N #2 / \tf@size } }
    \ctex_ltj_pickup_font: \tl_set_eq:NN \textfont@name \font@name
    \tl_gset:Nx \font@name { \use:c { \token_to_str:N #2 / \sf@size } }
    \ctex_ltj_pickup_font: \tl_set_eq:NN \scriptfont@name \font@name
    \tl_gset:Nx \font@name { \use:c { \token_to_str:N #2 / \ssf@size } }
    \ctex_ltj_pickup_font:
    \tl_put_right:Nx \math@fonts
      {
        \ltj@setpar@global
        \ltj@@set@stackfont #1 , \textfont@name   \c_colon_str { MJT }
        \ltj@@set@stackfont #1 , \scriptfont@name \c_colon_str { MJS }
        \ltj@@set@stackfont #1 , \font@name       \c_colon_str { MJSS }
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_use_math_group:Nn #1#2
  {
    \mode_if_math:T
      {
        \math@bgroup
          \cs_if_eq:cNF { M@ \f@encoding } #1 {#1}
          \ctex_ltj_math_group_hook:
          \ctex_ltj_if_jfont_math:NTF #1
            { \jfam } { \mathgroup } #2 \scan_stop:
        \math@egroup
      }
  }
\cs_new_eq:NN \ctex_ltj_math_group_hook: \prg_do_nothing:
\cs_set_eq:NN \use@mathgroup \ctex_ltj_use_math_group:Nn
\cs_new_protected:Npn \ctex_ltj_set_math_letter:NN #1#2
  {
    \group_begin:
      \cs_set_protected:Npn #1 ##1##2##3
        { \ltjsetmathletter { ##1 } }
      #2
    \group_end:
  }
\ctex_at_end_package:nn { unicode-math }
  {
    \cs_if_exist:NTF \um_input_math_symbol_table:
      {
        \ctex_ltj_set_math_letter:NN
          \um_sym:nnn
          \um_input_math_symbol_table:
      }
      {
        \cs_set_eq:NN \use@mathgroup \ctex_ltj_use_math_group:Nn
        \cs_set_protected_nopar:Npn \ctex_ltj_math_group_hook:
          { \__um_switchto_literal: }
        \ctex_ltj_set_math_letter:NN
          \__um_sym:nnn
          \__um_input_math_symbol_table:
      }
  }
\cs_new_protected_nopar:Npn \ctex_mono_jfm:n #1
  {
    \str_if_eq:nnTF {#1} { plain }
      { \tl_set:Nn \l__ctex_ltj_jfm_tl { mono } }
      { \tl_set:Nn \l__ctex_ltj_jfm_tl {#1} }
  }
\tl_new:N \l__ctex_ltj_jfm_tl
\cs_generate_variant:Nn \ctex_mono_jfm:n { o }
\ctex_mono_jfm:o { \l__ctex_punct_tl }
\tl_const:Nn \CJK@encoding { LTJY3 }
\DeclareFontEncoding { \CJK@encoding } { } { }
\use:x
  {
    \exp_not:N \DeclareFontSubstitution
      { \CJK@encoding } { song } { \mddefault } { \updefault }
  }
\lua_now:e { luatexja.jfont.add_kyenc_list('\CJK@encoding') }
\cs_new_protected_nopar:Npn \__ctex_ltj_change_encoding:
  { \tl_set_eq:NN \g_fontspec_encoding_tl \CJK@encoding }
\DeclareFontFamily { \CJK@encoding } { song } { }
\DeclareFontShape { \CJK@encoding } { song } { \mddefault } { \updefault }
  { <-> psft:SimSun:cid=Adobe-GB1-5;jfm=\l__ctex_ltj_jfm_tl } { }
\DeclareFontShape { \CJK@encoding } { song } { \bfdefault } { \updefault }
  { <-> psft:SimHei:cid=Adobe-GB1-5;jfm=\l__ctex_ltj_jfm_tl } { }
\tl_const:Nn \c__ctex_ltj_math_tl { CJKmath }
\DeclareSymbolFont { \c__ctex_ltj_math_tl }
  { \CJK@encoding } { song } { \mddefault } { \updefault }
\SetSymbolFont { \c__ctex_ltj_math_tl } { bold }
  { \CJK@encoding } { song } { \bfdefault } { \updefault }
\int_const:Nn \c__ctex_ltj_math_fam_int { \use:c { sym \c__ctex_ltj_math_tl } }
\jfam \c__ctex_ltj_math_fam_int
\newfontfeature { CID }     {    cid = #1 }
\newfontfeature { JFM }     {    jfm = #1 }
\newfontfeature { JFM-var } { jfmvar = #1 }
\keys_define:nn { fontspec-preparse-external }
  {
    NoEmbed .code:n =
      { \cs_set_eq:NN \__fontspec_fontname_wrap:n \__ctex_ltj_noembed_wrap:n }
  }
\cs_new:Npn \__ctex_ltj_noembed_wrap:n #1 { psft: #1 }
\cs_new_protected:Npn \ctex_ltj_set_family:nnn #1#2#3
  {
    \group_begin:
    \clist_clear:N \l__ctex_ltj_char_range_clist
    \seq_clear:N \l__ctex_ltj_alternate_seq
    \tl_set:Nn \l__ctex_ltj_base_CJKfamily_tl {#1}
    \keys_set_known:nnN { ctex_ltj / fontspec } {#2} \l__ctex_ltj_tmp_tl
    \clist_set:No \l__ctex_ltj_font_options_clist { \l__ctex_ltj_tmp_tl }
    \ctex_ltj_set_alternate_family:nnF {#1} {#3}
      {
        \prop_gput:Nnn \g__ctex_ltj_family_font_name_prop {#1} {#3}
        \prop_gput:Nno \g__ctex_ltj_family_font_options_prop
          {#1} { \l__ctex_ltj_font_options_clist }
        \__ctex_ltj_update_family_uid:N \l__ctex_ltj_font_options_clist
        \__ctex_ltj_use_global_options:N \l__ctex_ltj_font_options_clist
        \__ctex_ltj_gset_family_cs:nn {#1} {#3}
      }
    \group_end:
  }
\tl_new:N \l__ctex_ltj_base_CJKfamily_tl
\clist_new:N \l__ctex_ltj_font_options_clist
\cs_new_protected_nopar:Npn \__ctex_ltj_use_global_options:N #1
  {
    \clist_concat:NNN #1 \g__ctex_ltj_default_features_clist #1
    \clist_put_left:Nx #1 { JFM = \l__ctex_ltj_jfm_tl }
  }
\prop_new:N \g__ctex_ltj_family_name_prop
\prop_new:N \g__ctex_ltj_family_font_name_prop
\prop_new:N \g__ctex_ltj_family_font_options_prop
\cs_new_protected_nopar:Npn \__ctex_ltj_check_family:n #1
  {
    \prop_gpop:NnNT \g__ctex_ltj_family_font_name_prop {#1} \l__ctex_ltj_tmp_tl
      {
        \cs_undefine:c { \__ctex_ltj_family_csname:n {#1} }
        \cs_undefine:c { \__ctex_ltj_alternate_cs:n {#1} }
        \prop_gpop:NnNT \g__ctex_ltj_family_name_prop {#1} \l__ctex_ltj_base_family_tl
          {
            \use:c { \__ctex_ltj_alternate_cs:n { clear / #1 } }
            \cs_undefine:c { \__ctex_ltj_alternate_cs:n { clear / #1 } }
            \cs_undefine:c { \__ctex_ltj_alternate_cs:n { reset / #1 } }
            \prop_gremove:Nn \g__ctex_ltj_reset_alternate_prop {#1}
          }
        \msg_warning:nnxx { ctex } { redefine-family } {#1} { \l__ctex_ltj_tmp_tl }
      }
  }
\tl_new:N \l__ctex_ltj_tmp_tl
\msg_new:nnn { ctex } { redefine-family }
  { Redefining~CJKfamily~`\__ctex_ltj_msg_family_map:n {#1}'~(#2). }
\cs_new_protected_nopar:Npn \__ctex_ltj_gset_family_cs:nn #1#2
  {
    \cs_gset_protected_nopar:cpx { \__ctex_ltj_family_csname:n {#1} }
      {
        \group_begin:
        \__ctex_ltj_change_encoding:
        \exp_not:n { \cs_set_eq:NN \CJKfamily \use_none:n }
        \exp_not:n { \cs_set_eq:NN \CTEX@fontfamily \use_none:n }
        \exp_not:n { \fontspec_set_family:Nnn \g__ctex_ltj_fontspec_family_tl }
          { \exp_not:o { \l__ctex_ltj_font_options_clist } } {#2}
        \prop_gput:Nno \exp_not:N \g__ctex_ltj_family_name_prop {#1}
          { \exp_not:N \g__ctex_ltj_fontspec_family_tl }
        \tl_gset_eq:NN \exp_not:N \g__ctex_ltj_fontspec_family_tl
          \exp_not:N \g__ctex_ltj_fontspec_family_tl
        \__ctex_ltj_set_alternate_family:n {#1}
        \group_end:
      }
  }
\tl_new:N \l__ctex_ltj_base_family_tl
\tl_new:N \g__ctex_ltj_fontspec_family_tl
\cs_new_nopar:Npn \__ctex_ltj_family_csname:n #1 { ctex_ltj/family/#1 }
\cs_new_protected_nopar:Npn \__ctex_ltj_set_alternate_family:n #1
  {
    \tl_set:Nn \l__ctex_ltj_base_CJKfamily_tl {#1}
    \tl_set_eq:NN \l__ctex_ltj_base_family_tl \g__ctex_ltj_fontspec_family_tl
    \cs_if_exist_use:c { \__ctex_ltj_alternate_cs:n { reset / #1 } }
    \cs_if_exist_use:c { \__ctex_ltj_alternate_cs:n {#1} }
  }
\cs_new:Npn \__ctex_ltj_alternate_cs:n #1 { ctex_ltj/alternate_family/#1 }
\NewDocumentCommand \CJKfamily { m }
  { \ctex_ltj_switch_family:x {#1} \tex_ignorespaces:D }
\cs_new_protected_nopar:Npn \ctex_ltj_switch_family:n #1
  {
    \ctex_ltj_family_if_exist:nNTF {#1} \CJK@family
      {
        \tl_set:Nn \l_ctex_ltj_family_tl {#1}
        \selectfont
      }
      { \__ctex_ltj_family_unknown_warning:n {#1} }
  }
\tl_new:N \l_ctex_ltj_family_tl
\cs_generate_variant:Nn \ctex_ltj_switch_family:n { x }
\prg_new_protected_conditional:Npnn \ctex_ltj_family_if_exist:nN #1#2 { T , F , TF }
  {
    \prop_get:NnNTF \g__ctex_ltj_family_name_prop {#1} #2
      { \prg_return_true: }
      {
        \cs_if_exist_use:cTF { \__ctex_ltj_family_csname:n {#1} }
          {
            \tl_set_eq:NN #2 \g__ctex_ltj_fontspec_family_tl
            \prg_return_true:
          }
          { \prg_return_false: }
      }
  }
\prg_generate_conditional_variant:Nnn \ctex_ltj_family_if_exist:nN { x } { T , F , TF }
\cs_new_protected_nopar:Npn \__ctex_ltj_family_unknown_warning:n #1
  {
    \prop_if_empty:NF \g__ctex_ltj_family_font_name_prop
      {
        \seq_if_in:NnF \g__ctex_ltj_unknown_family_seq {#1}
          {
            \seq_gput_right:Nn \g__ctex_ltj_unknown_family_seq {#1}
            \msg_warning:nnn { ctex } { family-unknown } {#1}
          }
      }
  }
\seq_new:N \g__ctex_ltj_unknown_family_seq
\msg_new:nnn { ctex } { family-unknown }
  {
    Unknown~CJK~family~`\__ctex_ltj_msg_family_map:n {#1}'~is~being~ignored.\\
    Try~to~use~`\__ctex_ltj_msg_def_family_map:n {#1}'~to~define~it.
  }
\cs_new_nopar:Npn \__ctex_ltj_msg_def_family_map:n #1
  {
    \str_case_e:nnF {#1}
      {
        \CJKrmdefault { \token_to_str:N \setCJKmainfont }
        \CJKsfdefault { \token_to_str:N \setCJKsansfont }
        \CJKttdefault { \token_to_str:N \setCJKmonofont }
      }
      { \token_to_str:N \setCJKfamilyfont \{ #1 \} }
    [...]\{...\}
  }
\cs_new_nopar:Npn \__ctex_ltj_msg_family_map:n #1
  {
    \str_case_e:nnF {#1}
      {
        \CJKrmdefault { \token_to_str:N \CJKrmdefault }
        \CJKsfdefault { \token_to_str:N \CJKsfdefault }
        \CJKttdefault { \token_to_str:N \CJKttdefault }
      }
      {#1}
  }
\cs_new_protected_nopar:Npn \ctex_ltj_fontspec:nn #1#2
  {
    \prop_get:NnNTF \g__ctex_ltj_fontspec_prop
      { CJKfontspec/#1/#2/id } \l_ctex_ltj_family_tl
      { \ctex_ltj_switch_family:x { \l_ctex_ltj_family_tl } }
      {
        \int_gincr:N \g__ctex_ltj_family_int
        \__ctex_ltj_fontspec:xnn
          { CJKfontspec ( \int_use:N \g__ctex_ltj_family_int ) }
          {#1} {#2}
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_fontspec:xx #1#2
  { \use:x { \ctex_ltj_fontspec:nn {#1} {#2} } }
\cs_new_protected_nopar:Npn \__ctex_ltj_fontspec:nnn #1#2#3
  {
    \bool_if:NT \l__ctex_ltj_add_alternate_bool
      {
        \cs_if_free:cF
          { \__ctex_ltj_alternate_cs:n { reset / \l_ctex_ltj_family_tl } }
          {
            \cs_gset_eq:cc
              { \__ctex_ltj_alternate_cs:n { reset / #1 } }
              { \__ctex_ltj_alternate_cs:n { reset / \l_ctex_ltj_family_tl } }
            \cs_gset_eq:cc
              { \__ctex_ltj_alternate_cs:n { clear / #1 } }
              { \__ctex_ltj_alternate_cs:n { clear / \l_ctex_ltj_family_tl } }
          }
        \bool_set_false:N \l__ctex_ltj_add_alternate_bool
      }
    \prop_gput:Nnn \g__ctex_ltj_fontspec_prop { CJKfontspec/#2/#3/id } {#1}
    \ctex_ltj_set_family:nnn {#1} {#2} {#3}
    \ctex_ltj_switch_family:n {#1}
  }
\cs_generate_variant:Nn \__ctex_ltj_fontspec:nnn { x }
\prop_new:N \g__ctex_ltj_fontspec_prop
\cs_new_protected_nopar:Npn \ctex_ltj_add_font_features:n #1
  { \ctex_ltj_add_font_features:xn { \l_ctex_ltj_family_tl } {#1} }
\cs_new_protected_nopar:Npn \ctex_ltj_add_font_features:nn #1#2
  {
    \prop_get:NnNTF \g__ctex_ltj_family_font_name_prop
      {#1} \l__ctex_ltj_tmp_tl
      {
        \prop_get:NnN \g__ctex_ltj_family_font_options_prop
          {#1} \l__ctex_ltj_font_options_clist
        \clist_put_right:Nn \l__ctex_ltj_font_options_clist {#2}
        \bool_set_true:N \l__ctex_ltj_add_alternate_bool
        \ctex_ltj_fontspec:xx
          { \exp_not:o { \l__ctex_ltj_font_options_clist } }
          { \exp_not:o { \l__ctex_ltj_tmp_tl } }
      }
      { \msg_warning:nn { ctex } { addCJKfontfeature-ignored } }
  }
\bool_new:N \l__ctex_ltj_add_alternate_bool
\cs_generate_variant:Nn \ctex_ltj_add_font_features:n  { x }
\cs_generate_variant:Nn \ctex_ltj_add_font_features:nn { x }
\msg_new:nnn { ctex } { addCJKfontfeature-ignored }
  {
    \token_to_str:N \addCJKfontfeature (s)~ignored.\\
    It~cannot~be~used~with~a~font~that~wasn't~selected~by~ctex.
  }
\cs_new_protected:Npn \__ctex_ltj_pass_args:nnnn #1#2#3#4
  {
    \IfNoValueTF {#2}
      { \__ctex_ltj_post_arg:w {#1} {#3} {#4} }
      {
        \use:x { #1 {#2} {#3} }
        #4
      }
  }
\NewDocumentCommand \__ctex_ltj_post_arg:w { m m m O { } }
  {
    \use:x { #1 {#4} {#2} }
    #3
  }
\NewDocumentCommand \setCJKfamilyfont { m o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn {#1} } {#2} {#3}
      { }
  }
\NewDocumentCommand \newCJKfontfamily { o m o m }
  {
    \tl_set:Nx \l__ctex_ltj_tmp_tl
      { \IfNoValueTF {#1} { \cs_to_str:N #2 } {#1} }
    \cs_new_protected_nopar:Npx #2
      { \ctex_ltj_switch_family:n { \l__ctex_ltj_tmp_tl } }
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn { \l__ctex_ltj_tmp_tl } } {#3} {#4}
      { }
  }
\NewDocumentCommand \CJKfontspec { o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_fontspec:nn } {#1} {#2}
      { \tex_ignorespaces:D }
  }
\NewDocumentCommand \addCJKfontfeatures { m }
  {
    \ctex_ltj_add_font_features:x {#1}
    \tex_ignorespaces:D
  }
\cs_new_eq:NN \addCJKfontfeature \addCJKfontfeatures
\NewDocumentCommand \setCJKmainfont { o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn { \CJKrmdefault } } {#1} {#2}
      { \normalfont }
  }
\cs_new_eq:NN \setCJKromanfont \setCJKmainfont
\NewDocumentCommand \setCJKsansfont { o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn { \CJKsfdefault } } {#1} {#2}
      { \normalfont }
  }
\NewDocumentCommand \setCJKmonofont { o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn { \CJKttdefault } } {#1} {#2}
      { \normalfont }
  }
\NewDocumentCommand \setCJKmathfont { o m }
  {
    \__ctex_ltj_pass_args:nnnn
      { \ctex_ltj_set_family:nnn { \c__ctex_ltj_math_tl } } {#1} {#2}
      { }
  }
\NewDocumentCommand \defaultCJKfontfeatures { m }
  { \clist_gset:Nn \g__ctex_ltj_default_features_clist {#1} }
\clist_new:N \g__ctex_ltj_default_features_clist
\@onlypreamble \setCJKmainfont
\@onlypreamble \setCJKsansfont
\@onlypreamble \setCJKmonofont
\@onlypreamble \setCJKmathfont
\@onlypreamble \setCJKromanfont
\@onlypreamble \defaultCJKfontfeatures
\tl_if_exist:NF \CJKfamilydefault
  { \tl_const:Nn \CJKfamilydefault { \CJKrmdefault } }
\tl_if_exist:NF \CJKrmdefault { \tl_const:Nn \CJKrmdefault { rm } }
\tl_if_exist:NF \CJKsfdefault { \tl_const:Nn \CJKsfdefault { sf } }
\tl_if_exist:NF \CJKttdefault { \tl_const:Nn \CJKttdefault { tt } }
\RenewDocumentCommand \fontfamily { m }
  {
    \tl_set:Nx \f@family {#1}
    \CTEX@fontfamily {#1}
  }
\cs_new_protected_nopar:Npn \CTEX@fontfamily #1
  {
    \str_if_eq:nnTF {#1} { \familydefault }
      { \CJKfamily { \CJKfamilydefault } }
      { \__ctex_ltj_update_family_aux: }
  }
\cs_new_protected_nopar:Npn \__ctex_ltj_update_family_aux:
  {
    \str_case_e:nn { \f@family }
      {
        { \rmdefault }     { \CJKfamily { \CJKrmdefault } }
        { \sfdefault }     { \CJKfamily { \CJKsfdefault } }
        { \ttdefault }     { \CJKfamily { \CJKttdefault } }
        { \familydefault } { \CJKfamily { \CJKfamilydefault } }
      }
  }
\ctex_at_end_preamble:n { \ctex_update_default_family: }
\cs_new_protected_nopar:Npn \ctex_ltj_ensure_default_family:
  {
    \prop_if_empty:NF \g__ctex_ltj_family_font_name_prop
      {
        \ctex_ltj_family_if_exist:xNF { \CJKfamilydefault } \l__ctex_ltj_tmp_tl
          {
            \str_if_eq:eeTF { \CJKfamilydefault } { \CJKrmdefault }
              { \use:n }
              {
                \ctex_ltj_family_if_exist:xNTF { \CJKrmdefault } \l__ctex_ltj_tmp_tl
                  { \tl_gset:Nn \CJKfamilydefault { \CJKrmdefault } \use_none:n }
                  { \use:n }
              }
              {
                \prop_map_inline:Nn \g__ctex_ltj_family_font_name_prop
                  {
                    \prop_map_break:n
                      { \tl_gset_rescan:Nnn \CJKfamilydefault { } { ##1 } }
                  }
              }
          }
        \normalfont
        \ctex_ltj_update_mathfont:
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_update_mathfont:
  {
    \ctex_ltj_family_if_exist:xNTF { \c__ctex_ltj_math_tl } \l__ctex_ltj_tmp_tl
      { \ctex_ltj_update_mathfont:n { \l__ctex_ltj_tmp_tl } }
      {
        \ctex_ltj_family_if_exist:xNT { \CJKfamilydefault } \l__ctex_ltj_tmp_tl
          { \ctex_ltj_update_mathfont:n { \l__ctex_ltj_tmp_tl } }
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_update_mathfont:n #1
  {
    \tl_const:Nx \c__ctex_ltj_math_family_tl {#1}
    \DeclareSymbolFont { \c__ctex_ltj_math_tl } { \CJK@encoding }
      { \c__ctex_ltj_math_family_tl } { \mddefault } { \updefault }
    \cs_if_free:cTF
      { \CJK@encoding/\c__ctex_ltj_math_family_tl/\bfdefault/\updefault }
      {
        \SetSymbolFont { \c__ctex_ltj_math_tl } { bold } { \CJK@encoding }
          { \c__ctex_ltj_math_family_tl } { \mddefault } { \updefault }
      }
      {
        \SetSymbolFont { \c__ctex_ltj_math_tl } { bold } { \CJK@encoding }
          { \c__ctex_ltj_math_family_tl } { \bfdefault } { \updefault }
      }
  }
\keys_define:nn { ctex_ltj / fontspec }
  {
    AlternateFont  .code:n = \ctex_ltj_set_alternate_seq:n {#1} ,
    AlternateFont  .value_required:n = true ,
    CharRange .clist_set:N = \l__ctex_ltj_char_range_clist ,
    CharRange .value_required:n = true
  }
\group_begin:
  \char_set_catcode_other:N \|
  \cs_set:Npn \__ctex_ltj_tmp:w #1
    {
      \cs_new_protected:Npn \ctex_ltj_set_alternate_seq:n ##1
        {
          \clist_if_empty:NT \l__ctex_ltj_char_range_clist
            {
              \tl_set:Nn \l__ctex_ltj_tmp_tl { ##1 }
              \tl_replace_all:Nnn \l__ctex_ltj_tmp_tl {#1} { || }
              \seq_set_split:NnV \l__ctex_ltj_tmp_seq { || } \l__ctex_ltj_tmp_tl
              \seq_set_filter:NNn \l__ctex_ltj_tmp_seq \l__ctex_ltj_tmp_seq
                { ! \tl_if_blank_p:n { ####1 } }
              \seq_concat:NNN \l__ctex_ltj_alternate_seq
                \l__ctex_ltj_alternate_seq \l__ctex_ltj_tmp_seq
            }
        }
    }
  \char_set_catcode_active:N \|
  \__ctex_ltj_tmp:w { || }
\group_end:
\seq_new:N \l__ctex_ltj_tmp_seq
\seq_new:N \l__ctex_ltj_alternate_seq
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_family:nnF #1#2#3
  {
    \clist_if_empty:NTF \l__ctex_ltj_char_range_clist
      {
        \__ctex_ltj_check_family:n {#1}
        \seq_if_empty:NF \l__ctex_ltj_alternate_seq
          { \ctex_ltj_save_alternate_seq:cn { \__ctex_ltj_alternate_cs:n {#1} } {#2} }
        #3
      }
      { \ctex_ltj_set_alternate_family:nn {#1} {#2} }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_save_alternate_seq:Nn #1#2
  {
    \seq_map_inline:Nn \l__ctex_ltj_alternate_seq
      { \ctex_ltj_save_alternate_seq:Nnnwnw #1 {#2} ##1 { } \q_stop }
  }
\cs_generate_variant:Nn \ctex_ltj_save_alternate_seq:Nn { c }
\NewDocumentCommand \ctex_ltj_save_alternate_seq:Nnnwnw
  { m m m +O{ } m u{ \q_stop } }
  {
    \clist_set:Nn \l__ctex_ltj_char_range_clist {#3}
    \clist_set:Nn \l__ctex_ltj_alternate_options_clist {#4}
    \__ctex_ltj_use_global_options:N \l__ctex_ltj_alternate_options_clist
    \tl_if_blank:nTF {#5}
      { \tl_set:Nn \l__ctex_ltj_tmp_tl {#2} }
      {
        \tl_set:Nn \l__ctex_ltj_tmp_tl {#5}
        \tl_replace_all:Nnn \l__ctex_ltj_tmp_tl { * } {#2}
      }
    \use:x
      {
        \ctex_ltj_save_alternate_family:Nnnn \exp_not:N #1
          { \exp_not:o { \l__ctex_ltj_char_range_clist } }
          { \exp_not:o { \l__ctex_ltj_alternate_options_clist } }
          { \exp_not:o { \l__ctex_ltj_tmp_tl } }
      }
  }
\clist_new:N \l__ctex_ltj_alternate_options_clist
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_family:nn #1#2
  {
    \__ctex_ltj_update_family_uid:N \l__ctex_ltj_font_options_clist
    \__ctex_ltj_use_global_options:N \l__ctex_ltj_font_options_clist
    \ctex_ltj_set_alternate_family:coonn
      { \__ctex_ltj_alternate_cs:n {#1} }
      { \l__ctex_ltj_char_range_clist }
      { \l__ctex_ltj_font_options_clist } {#2} {#1}
  }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_family:Nnnnn #1#2#3#4#5
  {
    \prop_get:NnNT \g__ctex_ltj_family_name_prop {#5} \l__ctex_ltj_base_family_tl
      { \ctex_ltj_set_alternate_family:nnn {#2} {#3} {#4} }
    \ctex_ltj_save_alternate_family:Nnnn #1 {#2} {#3} {#4}
  }
\cs_generate_variant:Nn \ctex_ltj_set_alternate_family:Nnnnn { coo }
\cs_new_protected_nopar:Npn \ctex_ltj_save_alternate_family:Nnnn #1#2#3#4
  {
    \cs_if_exist:NF #1 { \cs_set_eq:NN #1 \prg_do_nothing: }
    \cs_gset_protected_nopar:Npx #1
      { \exp_not:o { #1 \ctex_ltj_set_alternate_family:nnn {#2} {#3} {#4} } }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_family:nnn #1#2#3
  {
    \group_begin:
    \__ctex_ltj_change_encoding:
    \cs_set_eq:NN \CJKfamily \use_none:n
    \ctex_ltj_swap_cs:NN
      \DeclareFontShape@ \ctex_ltj_declare_alternate_shape:nnnnnn
    \tl_set:Nn \l__ctex_ltj_char_range_clist {#1}
    \fontspec_set_family:Nnn \l__ctex_ltj_alternate_family_tl {#2} {#3}
    \group_end:
  }
\tl_new:N \l__ctex_ltj_alternate_family_tl
\cs_new_protected:Npn \ctex_ltj_swap_cs:NN #1#2
  {
    \cs_set_eq:NN \__ctex_ltj_tmp:w #1
    \cs_set_eq:NN #1 #2
    \cs_set_eq:NN #2 \__ctex_ltj_tmp:w
    \cs_undefine:N \__ctex_ltj_tmp:w
  }
\keys_define:nn { fontspec } { LTJFONTUID .code:n = }
\cs_new_protected_nopar:Npn \__ctex_ltj_update_family_uid:N #1
  {
    \int_gincr:N \g__ctex_ltj_family_int
    \clist_put_right:Nx #1 { LTJFONTUID = \int_use:N \g__ctex_ltj_family_int }
  }
\int_new:N \g__ctex_ltj_family_int
\cs_new_protected:Npn \ctex_ltj_declare_alternate_shape:nnnnnn #1#2#3#4#5#6
  {
    \ctex_ltj_declare_alternate_shape:nnnnnn {#1} {#2} {#3} {#4} {#5} {#6}
    \ctex_ltj_set_alternate_shape:Nnnnnnn \l__ctex_ltj_char_range_clist
      { \l__ctex_ltj_base_family_tl } {#3} {#4}
      { \l_fontspec_family_tl } {#3} {#4}
  }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_shape:Nnnnnnn #1#2#3#4#5#6#7
  {
    \clist_map_inline:Nn #1
      {
        \prop_get:NnNTF \g__ctex_ltj_char_range_prop { ##1 } \l__ctex_ltj_char_range_tl
          {
            \ctex_ltj_set_alternate_shape:nnN { #2/#3/#4 } { #5/#6/#7 }
              \l__ctex_ltj_char_range_tl
          }
          { \ctex_ltj_set_alternate_shape:nnn { #2/#3/#4 } { #5/#6/#7 } { ##1 } }
      }
    \__ctex_ltj_save_alternate_shape:cnn
      { \__ctex_ltj_alternate_cs:n { clear / \l__ctex_ltj_base_CJKfamily_tl } }
      { luatexja.jfont.clear_alt_font_latex }
      { '\lua_escape:e { \CJK@encoding/#2/#3/#4 }' }
  }
\NewDocumentCommand \ctex_ltj_set_alternate_shape:nnn
  { m m > { \SplitArgument { 1 } { -> } } m }
  { \ctex_ltj_set_alternate_shape:nnnn {#1} {#2} #3 }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_shape:nnnn #1#2#3#4
  {
    \ctex_ltj_set_alternate_shape:n
      {
        \IfNoValueTF {#4}
          { \int_eval:n {#3} , \int_eval:n {#3} , }
          {
            \int_eval:n { \tl_if_blank:nTF {#3} { "80 } {#3} } ,
            \int_eval:n { \tl_if_blank:nTF {#4} { "10FFFF } {#4} } ,
          }
        '\lua_escape:e { \CJK@encoding/#2 }' ,
        '\lua_escape:e { \CJK@encoding/#1 }'
      }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_shape:n #1
  {
    \lua_now:e { luatexja.jfont.set_alt_font_latex ( #1 ) }
    \__ctex_ltj_save_alternate_shape:cnn
      { \__ctex_ltj_alternate_cs:n { reset / \l__ctex_ltj_base_CJKfamily_tl } }
      { luatexja.jfont.set_alt_font_latex } {#1}
  }
\cs_new_protected_nopar:Npn \ctex_ltj_set_alternate_shape:nnN #1#2#3
  {
    \tl_map_inline:Nn #3
      {
        \ctex_ltj_set_alternate_shape:n
          {
            ##1 ,
            '\lua_escape:e { \CJK@encoding/#2 }' ,
            '\lua_escape:e { \CJK@encoding/#1 }'
          }
      }
  }
\cs_new_protected_nopar:Npn \__ctex_ltj_save_alternate_shape:Nnn #1#2#3
  {
    \group_begin:
    \cs_if_exist:NF #1 { \cs_set_eq:NN #1 \prg_do_nothing: }
    \cs_set_eq:NN \l__ctex_ltj_base_family_tl \scan_stop:
    \cs_set_eq:NN \lua_escape:e \scan_stop:
    \cs_gset_protected_nopar:Npx #1
      { \exp_not:o {#1} \exp_not:N \lua_now:e { #2 ( #3 ) } }
    \group_end:
  }
\cs_generate_variant:Nn \__ctex_ltj_save_alternate_shape:Nnn { c }
\keys_define:nn { ctex }
  {
    clearalternatefont    .code:n =
      { \clist_map_function:xN {#1} \ctex_ltj_clear_alternate_font:n } ,
    resetalternatefont    .code:n =
      { \clist_map_function:xN {#1} \ctex_ltj_reset_alternate_font:n } ,
    clearalternatefont .default:n = \l_ctex_ltj_family_tl ,
    resetalternatefont .default:n = \l_ctex_ltj_family_tl
  }
\cs_new_protected_nopar:Npn \ctex_ltj_clear_alternate_font:n #1
  {
    \group_begin:
      \ctex_ltj_family_if_exist:xNTF {#1} \l__ctex_ltj_base_family_tl
        {
          \cs_if_exist_use:cT { \__ctex_ltj_alternate_cs:n { clear / #1 } }
            {
              \prop_gput:Nno \g__ctex_ltj_reset_alternate_prop
                {#1} { \l__ctex_ltj_base_family_tl }
              \tl_set_eq:NN \CJK@family \l__ctex_ltj_base_family_tl
              \selectfont
            }
        }
        { \__ctex_ltj_family_unknown_warning:n {#1} }
    \group_end:
  }
\cs_new_protected_nopar:Npn \ctex_ltj_reset_alternate_font:n #1
  {
    \group_begin:
      \prop_gpop:NnNT \g__ctex_ltj_reset_alternate_prop {#1} \CJK@family
        {
          \tl_set_eq:NN \l__ctex_ltj_base_family_tl \CJK@family
          \use:c { \__ctex_ltj_alternate_cs:n { reset / #1 } }
          \selectfont
        }
    \group_end:
  }
\prop_new:N \g__ctex_ltj_reset_alternate_prop
\cs_generate_variant:Nn \clist_map_function:nN { x }
\keys_define:nn { ctex }
  {
    declarecharrange .code:n = \ctex_ltj_declare_char_range:x {#1} ,
    declarecharrange .value_required:n = true
  }
\cs_new_protected_nopar:Npn \ctex_ltj_declare_char_range:n #1
  { \clist_map_inline:nn {#1} { \__ctex_ltj_declare_char_range:nn ##1 } }
\cs_generate_variant:Nn \ctex_ltj_declare_char_range:n { x }
\cs_new_protected_nopar:Npn \__ctex_ltj_declare_char_range:nn #1#2
  { \use:x { \ctex_ltj_declare_char_range:nn { \tl_trim_spaces:n {#1} } } {#2} }
\cs_new_protected_nopar:Npn \ctex_ltj_declare_char_range:nn #1#2
  {
    \tl_clear:N \l__ctex_ltj_char_range_tl
    \clist_map_function:nN {#2} \ctex_ltj_save_char_range:n
    \prop_gput:Nno \g__ctex_ltj_char_range_prop {#1} { \l__ctex_ltj_char_range_tl }
    \ctex_ltj_def_char_range_key:n {#1}
    \tl_clear:N \l__ctex_ltj_char_range_tl
  }
\tl_new:N \l__ctex_ltj_char_range_tl
\prop_new:N \g__ctex_ltj_char_range_prop
\NewDocumentCommand \ctex_ltj_save_char_range:n
  { > { \SplitArgument { 1 } { -> } } m }
  { \ctex_ltj_save_char_range:nn #1 }
\cs_new_protected_nopar:Npn \ctex_ltj_save_char_range:nn #1#2
  {
    \tl_put_right:Nx \l__ctex_ltj_char_range_tl
      { {
          \IfNoValueTF {#2}
            { \int_eval:n {#1} , \int_eval:n {#1} }
            {
              \int_eval:n { \tl_if_blank:nTF {#1} { "80 } {#1} } ,
              \int_eval:n { \tl_if_blank:nTF {#2} { "10FFFF } {#2} }
            }
      } }
  }
\cs_new_protected_nopar:Npn \ctex_ltj_def_char_range_key:n #1
  {
    \keys_if_exist:nnF { ctex_ltj / fontspec } {#1}
      {
        \keys_define:nn { ctex_ltj / fontspec }
          { #1 .code:n = \ctex_ltj_char_range_key:nn {#1} { ##1 } }
      }
  }
\cs_new_protected:Npn \ctex_ltj_char_range_key:nn #1#2
  {
    \tl_if_blank:nTF {#2}
      { \tl_set:Nn \l__ctex_ltj_char_range_clist {#1} }
      {
        \clist_if_empty:NT \l__ctex_ltj_char_range_clist
          {
            \tl_set:Nn \l__ctex_ltj_tmp_tl { {#1} }
            \__ctex_ltj_char_range_parse_feature:w #2 \q_stop
          }
      }
  }
\NewDocumentCommand \__ctex_ltj_char_range_parse_feature:w
  { +o o u { \q_stop } }
  {
    \exp_args:NNf \tl_put_right:Nn \l__ctex_ltj_tmp_tl
      {
        \IfNoValueTF {#1} { {#3} }
          {
            \IfNoValueTF {#2}
              { \tl_if_blank:nTF {#3} { { [#1] } } { [ {#1} ] {#3} } }
              { [ {#1} ] { [#2] } }
          }
      }
    \seq_put_right:No \l__ctex_ltj_alternate_seq { \l__ctex_ltj_tmp_tl }
  }
\AtBeginDocument
  {
    \ctex_appto_cmd:NnnTF \verbatim@font
      { \char_set_catcode_letter:n { 64 } }
      { \CTEX@verbatim@font@hook }
      { }
      { \ctex_patch_failure:N \verbatim@font }
  }
\cs_new_protected_nopar:Npn \CTEX@verbatim@font@hook
  { \ltjsetparameter { autospacing = false , autoxspacing = false } }
\cs_set_eq:NN \@@italiccorr \/
\cs_new_protected_nopar:Npn \ctex_ltj_set_kanjiskip:N
  { \ltj@setpar@global \ltjsetkanjiskip }
\cs_new_protected_nopar:Npn \ctex_ltj_set_xkanjiskip:N
  { \ltj@setpar@global \ltjsetxkanjiskip }
\cs_new_protected_nopar:Npn \ctex_update_default_family:
  {
    \tl_if_eq:NNT \CJKfamilydefault \l__ctex_family_default_init_tl
      {
        \group_begin:
          \cs_set_eq:NN \__ctex_family_default_wrap:n \exp_not:n
          \tl_gset:Nx \CJKfamilydefault
            {
              \str_case:onF { \familydefault }
                {
                  { \rmdefault } { \exp_not:N \CJKrmdefault }
                  { \sfdefault } { \exp_not:N \CJKsfdefault }
                  { \ttdefault } { \exp_not:N \CJKttdefault }
                }
                { \CJKfamilydefault }
            }
        \group_end:
      }
    \ctex_ltj_ensure_default_family:
  }
\tl_new:N \l__ctex_family_default_init_tl
\cs_new_eq:NN \__ctex_family_default_wrap:n \use:n
\tl_set:Nx \l__ctex_family_default_init_tl
  {
    \exp_not:N \__ctex_family_default_wrap:n
      { \exp_not:o { \CJKfamilydefault } }
  }
\tl_gset_eq:NN \CJKfamilydefault \l__ctex_family_default_init_tl
\cs_new_protected_nopar:Npn \ctex_detected_platform:
  {
    \tl_gset:Nx \g__ctex_fontset_tl
      {
        \lua_now:e
          {
            if ~ os.name == 'windows' then ~
              tex.sprint ( 'windows' )
            elseif ~ os.name == 'macosx' then ~
              tex.sprint ( 'mac' )
            else ~
              tex.sprint ( 'fandol' )
            end
          }
      }
  }
\ctex_hypersetup:n { pdfencoding = unicode }
\msg_new:nnn { ctex } { fntef-not-available }
  { Functions~ of~ `CJKfntef'~ is~ not~ available~ in~ LuaLaTeX. }
\msg_warning:nn { ctex } { fntef-not-available }
\clist_map_inline:nn
  { underdot , underline , underdblline , underwave , sout , xout }
  { \cs_new_eq:cN { CTEX#1 } \use:n }
\cs_new_eq:NN \CTEXfilltwosides \use_none:n
\cs_new_eq:NN \endCTEXfilltwosides \prg_do_nothing:
\cs_new_protected_nopar:Npn \ctex_update_ccwd:
  { \skip_set:Nn \ccwd { \ltjgetparameter { kanjiskip } + \zw } }
\dim_new:N \ccwd
\cs_new_protected_nopar:Npn \ctex_update_ccglue:
  { \ctex_ltj_set_kanjiskip:N \l__ctex_ccglue_skip }
\skip_new:N \l__ctex_ccglue_skip
\prg_new_conditional:Npnn \ctex_if_ccglue_touched: { TF }
  {
    \skip_if_eq:nnTF { \l__ctex_ccglue_skip } { \ltjgetparameter { kanjiskip } }
      { \prg_return_false: } { \prg_return_true: }
  }
\cs_new_protected_nopar:Npn \ctex_update_em_unit:
  { \dim_set:Nn \ccwd { \zw } }
\cs_new_protected:Npn \ctex_add_to_selectfont:n #1
  {
    \cs_set_protected_nopar:Npx \CTEX@selectfont@hook
      { \exp_not:o { \CTEX@selectfont@hook #1 } }
  }
\cs_new_eq:NN \CTEX@selectfont@hook \prg_do_nothing:
\if_cs_exist:N \@EverySelectfont@Init
  \group_begin:
    \cs_set:Npn \__ctex_tmp:N #1
      {
        \tl_set:Nn \l__ctex_tmp_tl {#1}
        \cs_new_eq:NN \CTEX@selectfont@save #1
        \cs_new_protected_nopar:Npn \__ctex_restore_selectfont:
          {
            \tl_put_left:Nn \@EverySelectfont@Init
              { \let #1 \CTEX@selectfont@save }
            \cs_undefine:N \__ctex_restore_selectfont:
          }
      }
    \ctex_parse_name:NN \__ctex_tmp:N \selectfont
  \exp_last_unbraced:NNo \group_end:
  \ctex_patch_cmd_once:NnnnTF { \l__ctex_tmp_tl }
    { \ExplSyntaxOff }
    { \size@update }
    { \CTEX@selectfont@hook \size@update }
    { \__ctex_restore_selectfont: }
    { \ctex_patch_failure:N \selectfont }
\fi:
\EverySelectfont { \CTEX@selectfont@hook }
\ctex_add_to_selectfont:n
  {
    \ctex_ltj_select_font:
    \ctex_ltj_select_alternate_font:
  }
\tl_set:Nn \CJK@family { song } \selectfont
\tl_clear:N \CJK@family
\cs_new_protected_nopar:Npn \ctex_update_xkanjiskip:
  {
    \skip_if_eq:nnT
      { \ltjgetparameter { xkanjiskip } } { \l__ctex_xkanjiskip_skip }
      {
        \skip_set:Nn \l__ctex_xkanjiskip_skip { \l__ctex_xkanjiskip_tl }
        \ctex_ltj_set_xkanjiskip:N \l__ctex_xkanjiskip_skip
      }
  }
\tl_new:N \l__ctex_xkanjiskip_tl
\tl_set:Nn \l__ctex_xkanjiskip_tl
  { .25\zw plus 1pt minus 1pt }
\skip_new:N \l__ctex_xkanjiskip_skip
\skip_set:Nn \l__ctex_xkanjiskip_skip
  { \ltjgetparameter { xkanjiskip } }
\ctex_add_to_selectfont:n { \ctex_update_xkanjiskip: }
\dim_new:N \cht
\dim_new:N \cdp
\dim_new:N \cwd
\newluafunction \g__ctex_kanjisize_func
\group_begin:
\char_set_catcode_space:n { 32 }
\lua_now:e
  {
    local nulltable = { }
    local t = lua.get_functions_table()
    local fmt = luatexja.jfont.font_metric_table
    local getattribute = tex.getattribute
    local setdimen = tex.setdimen
    t[\int_use:N \g__ctex_kanjisize_func] = function ()
      local ft = fmt[getattribute('ltj@curjfnt')] or nulltable
      local ft = ft and ft.char_type or nulltable
      local fk = ft and ft[0] or nulltable
      setdimen('cht', fk.height or 0)
      setdimen('cdp', fk.depth or 0)
      setdimen('cwd', fk.width or ft.zw or 0)
    end
  }
\group_end:
\cs_new_protected_nopar:Npn \ctex_update_kanjisize:
 { \tex_luafunction:D \g__ctex_kanjisize_func }
\ctex_add_to_selectfont:n { \ctex_update_kanjisize: }
\keys_define:nn { ctex }
  {
    space .code:n =
      { \msg_warning:nn { ctex } { invalid-option } }
  }
\keys_define:nn { ctex }
  {
    punct .code:n =
      {
        \tl_set:Nx \l__ctex_punct_tl { #1 }
        \ctex_mono_jfm:o { \l__ctex_punct_tl }
      } ,
    punct .default:n = { quanjiao } ,
  }
\tl_set:Nn \l__ctex_encoding_tl { UTF8 }
%% 
%%
%% End of file `ctex-engine-luatex.def'.
