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diff --git a/Master/texmf-dist/tex/latex/ctex/ctexhook.sty b/Master/texmf-dist/tex/latex/ctex/ctexhook.sty
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+%%
+%% This is file `ctexhook.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% ctex.dtx  (with options: `ctexhook')
+%% 
+%%     Copyright (C) 2003--2015
+%%     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.
+%% 
+%% ------------------------------------------------------------------------------
+%% 
+\NeedsTeXFormat{LaTeX2e}
+\RequirePackage{expl3}
+\GetIdInfo$Id: ctex.dtx 6255367 2015-07-01 01:15:24 +0800 Qing Lee <sobenlee@gmail.com> $
+  {Document and package hooks (CTEX)}
+\ProvidesExplPackage{ctexhook}
+  {\ExplFileDate}{2.2}{\ExplFileDescription}
+\cs_new_protected:Npn \ctex_at_end_preamble:n #1
+  { \tl_gput_right:Nn \g__ctex_end_preamble_hook_tl {#1} }
+\cs_new_protected:Npn \ctex_after_end_preamble:n #1
+  { \tl_gput_right:Nn \g__ctex_after_end_preamble_hook_tl {#1} }
+\cs_new_protected_nopar:Npn \CTEX@document@left@hook
+  { \group_end: \g__ctex_end_preamble_hook_tl \group_begin: }
+\cs_new_protected_nopar:Npn \CTEX@document@right@hook
+  { \scan_stop: \g__ctex_after_end_preamble_hook_tl \tex_ignorespaces:D }
+\cs_set_nopar:Npx \document
+  {
+    \CTEX@document@left@hook
+    \exp_not:o { \document }
+    \CTEX@document@right@hook
+  }
+\tl_new:N \g__ctex_end_preamble_hook_tl
+\tl_new:N \g__ctex_after_end_preamble_hook_tl
+\cs_new_protected:Npn \ctex_at_end_package:nn #1#2
+  {
+    \@ifpackageloaded {#1}
+      {#2}
+      { \ctex_gadd_hook:cn { g__ctex_at_end_ #1 _hook_tl } {#2} }
+  }
+\cs_new_protected:Npn \ctex_gadd_hook:Nn #1#2
+  {
+    \tl_if_exist:NF #1 { \tl_new:N #1 }
+    \tl_gput_right:Nn #1 {#2}
+  }
+\cs_generate_variant:Nn \ctex_gadd_hook:Nn { c }
+\cs_new_protected_nopar:Npn \ctex_package_end_hook:n #1
+  {
+    \cs_if_exist_use:cT { g__ctex_at_end_ #1 _hook_tl }
+      { \cs_undefine:c { g__ctex_at_end_ #1 _hook_tl } }
+  }
+\cs_generate_variant:Nn \ctex_package_end_hook:n { o }
+\tl_put_left:Nn \@popfilename
+  {
+    \cs_if_eq:NNT \@currext \@pkgextension
+      { \ctex_package_end_hook:o { \@currname } }
+  }
+%% 
+%%
+%% End of file `ctexhook.sty'.