secnum (1jan20)

git-svn-id: svn://tug.org/texlive/trunk@53294 c570f23f-e606-0410-a88d-b1316a301751

8 files changed, 644 insertions, 1 deletions

diff --git a/Master/texmf-dist/doc/latex/secnum/README.md b/Master/texmf-dist/doc/latex/secnum/README.md
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+
+# secnum
+
+This package provides a macro \setsecnum to format section numbering intuitively.
+
+## Installation
+
+The installation is the same as usual Tex packages.
+
+0. Put the source file `secnum.dtx` in a empty folder and go to there.
+
+1. Run the following to create the package file `secnum.sty` (as well as this file `README.md`)
+
+       XeTeX secnum.dtx
+
+2. Move the following file into proper directories searched by TeX.
+   The recommended directory is
+
+       tex/latex/secnum
+
+3. To produce the documentation run the following
+
+       XeLaTeX secnum.dtx
+
+4. The recommended directory for the documentation is
+
+       doc/latex/secnum
+
+## Download
+
+One can also download the generated files from the [github release](https://github.com/GauSyu/secnum/releases).
+
diff --git a/Master/texmf-dist/doc/latex/secnum/secnum.pdf b/Master/texmf-dist/doc/latex/secnum/secnum.pdf
new file mode 100644
index 00000000000..e26107701c5
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/secnum/secnum.pdf
diff --git a/Master/texmf-dist/source/latex/secnum/secnum.dtx b/Master/texmf-dist/source/latex/secnum/secnum.dtx
new file mode 100644
index 00000000000..5d2fe91f37b
--- /dev/null
+++ b/Master/texmf-dist/source/latex/secnum/secnum.dtx
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+% \iffalse meta-comment
+%
+% Copyright (C) 2019 
+% Gau, Syu ( GauSyu@Gmail.com )
+%
+% ----------------------------------------------------------------------
+%
+% 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 Maintainer of this work is 
+%    Gau, Syu ( GauSyu@Gmail.com ).
+%
+% ----------------------------------------------------------------------
+%
+%<*internal>
+\iffalse
+%</internal>
+%<*readme>
+
+# secnum
+
+This package provides a macro \setsecnum to format section numbering intuitively.
+
+## Installation
+
+The installation is the same as usual Tex packages.
+
+0. Put the source file `secnum.dtx` in a empty folder and go to there.
+
+1. Run the following to create the package file `secnum.sty` (as well as this file `README.md`)
+
+       XeTeX secnum.dtx
+
+2. Move the following file into proper directories searched by TeX.
+   The recommended directory is
+
+       tex/latex/secnum
+
+3. To produce the documentation run the following
+
+       XeLaTeX secnum.dtx
+
+4. The recommended directory for the documentation is
+
+       doc/latex/secnum
+
+## Download
+
+One can also download the generated files from the [github release](https://github.com/GauSyu/secnum/releases).
+
+%</readme>
+%<*internal>
+\fi
+\begingroup
+  \def\nameoflatexe{LaTeX2e}
+\expandafter\endgroup\ifx\nameoflatexe\fmtname\else
+\csname fi\endcsname
+%</internal>
+%<*install>
+
+\input docstrip.tex
+
+\preamble
+
+Copyright (C) 2019 
+Gau, Syu ( GauSyu@Gmail.com )
+ 
+----------------------------------------------------------------------
+ 
+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 Maintainer of this work is 
+  Gau, Syu ( GauSyu@Gmail.com ).
+ 
+----------------------------------------------------------------------
+
+\endpreamble
+
+\keepsilent
+
+\generate{
+  \usedir{tex/latex/secnum}
+  \file{\jobname.sty}{\from{\jobname.dtx}{package}}
+  \nopreamble\nopostamble
+  \file{README.md}{\from{\jobname.dtx}{readme}}
+}
+\Msg{*************************************************************}
+\Msg{*                                                           *}
+\Msg{* To finish the installation you have to move the following *}
+\Msg{* file into proper directories searched by TeX:             *}
+\Msg{*                                                           *}
+\Msg{* The recommended directory is TDS:tex/latex/secnum         *}
+\Msg{*                                                           *}
+\Msg{*     secnum.sty                                            *}
+\Msg{*                                                           *}
+\Msg{* To produce the documentation run the file secnum.dtx      *}
+\Msg{* through XeLaTeX.                                          *}
+\Msg{*                                                           *}
+\Msg{* Happy TeXing!                                             *}
+\Msg{*                                                           *}
+\Msg{*************************************************************}
+\endbatchfile
+%</install>
+%<*internal>
+\fi
+%</internal>
+%<*driver>
+\ProvidesFile{secnum.dtx}
+\documentclass{l3doc}
+\usepackage{indentfirst}
+\usepackage{booktabs}
+\usepackage{xcolor}
+\usepackage{secnum}
+\setsecnum{A}
+\ExplSyntaxOn
+\cs_set_eq:NN \__codedoc_macro_end_style:n \use_none:n
+\ExplSyntaxOff
+\DeclareRobustCommand \opt {\texttt}
+\EnableCrossrefs
+\CodelineIndex
+\RecordChanges
+\begin{document}
+  \DocInput{\jobname.dtx}
+\end{document}
+%</driver>
+% \fi
+% \GetFileInfo{\jobname.sty}
+% \DoNotIndex{\cs}
+%
+% \title{ The \pkg{\jobname} package }
+% \author{ Gau, Syu }
+% \date{ \textit{Last Update:} \filedate }
+%
+% \maketitle
+%
+% \begin{abstract}
+%   The package \pkg{\jobname} provides a marco \cs{setsecnum} 
+%   which allows user to format section numbering intuitively.
+% \end{abstract}
+%
+% \tableofcontents
+% \begin{documentation}
+% \section{Usage}
+%   Before using the macro, load the package in preamble.
+%  \begin{verbatim}
+%  \usepackage{secnum}
+%  \end{verbatim}
+%   Then, one can format the section numbering by using the 
+%   marco \cs{setsecnum} in preamble.
+%  \begin{function}{\setsecnum}
+%  \begin{syntax}
+%    \cs{setsecnum} \meta{num format}
+%  \end{syntax}
+%    A typical \meta{num format} is like this:
+%  \begin{center}
+%    \verb|1.1.1|
+%  \end{center}
+%    It consists of some syntax abbrs of numbering formats, 
+%    reffering the follows,
+%  \begin{center}
+%   \begin{tabular}{ccccc}
+%    \toprule
+%     A & a & I & i & 1 \\
+%    \midrule
+%     \cs{Alph} & \cs{alph} & \cs{Roman} & \cs{roman} & \cs{arabic} \\
+%    \bottomrule
+%   \end{tabular}
+%  \end{center}
+%   and some separators, which can be any character except 
+%   the abbrs and special characters such as barces ``\verb|{}|'', 
+%   comma ``\verb|,|'', space ``\verb*| |'', etc.
+%  \end{function}
+%
+% \section{Process}
+%   The process of the macro \cs{setsecnum} can be 
+%   explained as follows.
+% \begin{enumerate}[label=Step \arabic*.]
+%   \item The main function eats the input, saying \opt{I.1.a}, 
+%         and stores it in a token list.
+%   \item Replace abbrs by macros.
+%         In our example, it results 
+%         ``\cs{Roman}\opt{.}\cs{arabic}\opt{.}\cs{alph}''
+%   \item Split this token list into a sequence by macros. 
+%         In our example, it results ``\cs{Roman}'', 
+%         ``\opt{.}\cs{arabic}'' and ``\opt{.}\cs{alph}''.
+%   \item Store those codes in indivial containers.
+%   \item Use them to renew \cs{thesection}, \cs{thesubsection}, 
+%         \cs{thesubsubsection} etc. 
+%         provided there is no \cs{chapter}.
+% \end{enumerate}
+%   
+% \end{documentation}
+%
+% \StopEventually{}
+% 
+% \begin{implementation}
+% \section{Implementation}
+%   The following is the implementation. 
+%   Users can ignore.
+% \subsection{Preparations}
+%   This document class uses \LaTeX3. 
+%   Therefore, the packages \pkg{expl3}, \pkg{xparse} 
+%   and \pkg{l3keys2e} are needed and should use 
+%   \cs{ProvidesExplClass} rather than \cs{ProvidesClass}.
+%
+%    \begin{macrocode}
+%<*package>
+%<@@=syu>
+\NeedsTeXFormat{LaTeX2e}
+\RequirePackage{expl3}
+\ProvidesExplPackage{secnum}{2020/01/01}{}
+  { An intuitive way to format section numbering }
+\RequirePackage{xparse}
+%    \end{macrocode}
+%
+%  \begin{variable}{ \l__syu_secnum_tl, \l__syu_secnum_seq }
+%   The two variables are used to store the formatting information.
+%    \begin{macrocode}
+\tl_new:N \l__syu_secnum_tl
+\seq_new:N \l__syu_secnum_seq
+%    \end{macrocode}
+%  \end{variable}
+%
+%  \begin{variable}{ 
+%    \g__syu_chapter_tl, 
+%    \g__syu_section_tl,
+%    \g__syu_subsection_tl,
+%    \g__syu_subsubsection_tl,
+%    \g__syu_paragraph_tl,
+%    \g__syu_subparagraph_tl
+%   }
+%   The following variables are used to store 
+%   the individal formatting codes.
+%    \begin{macrocode}
+\tl_new:N \g__syu_chapter_tl
+\tl_new:N \g__syu_section_tl
+\tl_new:N \g__syu_subsection_tl
+\tl_new:N \g__syu_subsubsection_tl
+\tl_new:N \g__syu_paragraph_tl
+\tl_new:N \g__syu_subparagraph_tl
+%    \end{macrocode}
+%  \end{variable}
+%
+%  \begin{variable}{ \g__syu_if_thechapter_int }
+%   This \meta{integer} encodes if \cs{thechapter} is defined.
+%    \begin{macrocode}
+\int_new:N \g__syu_if_thechapter_int
+%    \end{macrocode}
+%   If \cs{thechapter} is defined, it is $1$.
+%    \begin{macrocode}
+\if_cs_exist:N \thechapter
+  \int_gset:Nn \g__syu_if_thechapter_int 1
+%    \end{macrocode}
+%   Otherwise, it is $0$.
+%    \begin{macrocode}
+\else:
+  \int_gset:Nn \g__syu_if_thechapter_int 0
+\fi:
+%    \end{macrocode}
+%  \end{variable}
+%
+% \subsection{Main function}
+% 
+%  \begin{macro}{\setsecnum}
+%   Here is the definition of the main function \cs{setsecnum}.
+%    \begin{macrocode}
+\DeclareDocumentCommand{\setsecnum}{m}
+  {
+%    \end{macrocode}
+%   Store the input in.
+%    \begin{macrocode}
+    \tl_set:Nn \l__syu_secnum_tl {#1}
+%    \end{macrocode}
+%   Replace syntax abbrs by corresponding macros.
+%    \begin{macrocode}
+    \syu_secnum_unabbr:N \l__syu_secnum_tl
+%    \end{macrocode}
+%   Split into a sequence by macros.
+%    \begin{macrocode}
+    \syu_split_by_macros:NN \l__syu_secnum_tl \l__syu_secnum_seq
+%    \end{macrocode}
+%   Read formatting information.
+%    \begin{macrocode}
+    \syu_secnum_from_seq:N \l__syu_secnum_seq
+%    \end{macrocode}
+%   Set the \opt{secnumdepth}.
+%    \begin{macrocode}
+    \setcounter{secnumdepth}{ \seq_count:N \l__syu_secnum_seq }
+%    \end{macrocode}
+%   Format numberings.
+%    \begin{macrocode}
+    \syu_secnum:
+  }
+%    \end{macrocode}
+%  \end{macro}
+%
+% \subsection{Unabbravation}
+%  \begin{variable}{ \syu_secnum_unabbr:N }
+%   This function replace the abbrs in a \meta{tl var}  
+%   by expansions.
+%    \begin{macrocode}
+\cs_new_protected:Npn \syu_secnum_unabbr:N #1
+  {
+    \regex_replace_all:nnN {A} {\c{Alph}} #1
+    \regex_replace_all:nnN {a} {\c{alph}} #1
+    \regex_replace_all:nnN {I} {\c{Roman}} #1
+    \regex_replace_all:nnN {i} {\c{roman}} #1
+    \regex_replace_all:nnN {1} {\c{arabic}} #1
+  }
+%    \end{macrocode}
+%  \end{variable}
+%
+% \subsection{Split to sequence}
+%  \begin{variable}{ \syu_split_by_macros:NN }
+%   This function split a \meta{tl var} into a \meta{sequence} 
+%   by macros.
+%    \begin{macrocode}
+\cs_new_protected:Npn \syu_split_by_macros:NN #1 #2
+  {
+    \tl_clear:N \l_tmpa_tl
+    \seq_clear:N #2
+    \tl_map_inline:Nn #1 
+      {
+        \tl_put_right:Nn \l_tmpa_tl ##1
+        \__syu_if_macro:nT ##1 
+          {
+            \seq_put_right:NV #2 \l_tmpa_tl 
+            \tl_clear:N \l_tmpa_tl
+          }
+      }
+  }
+%    \end{macrocode}
+%  \end{variable}
+%   But how to see if an \meta{item} in the token list is a macro?
+%  \begin{variable}{ \g__syu_macro_tl }
+%   This \meta{tl var} stores the first five characters 
+%   of the meaning of any macro, 
+%   i.e. \opt{macro} (watch out its catcode). 
+%   The idea is to creat a \meta{tl var} and then set 
+%   its value to be the first five characters of its meaning.
+%    \begin{macrocode}
+\tl_new:N \g__syu_macro_tl
+\tl_set:Nx \g__syu_macro_tl { \meaning \g__syu_macro_tl }
+\tl_gset:Nx \g__syu_macro_tl { \tl_range:Nnn \g__syu_macro_tl {1}{5} }
+%    \end{macrocode}
+%  \end{variable}
+%  \begin{variable}{ \__syu_if_macro:nT, 
+%  \__syu_if_macro:nF, \__syu_if_macro:nTF, }
+%   Then, define a conditional testing if the input is a macro. 
+%   Note that I use \cs{if_meaning} rather than \cs{tl_if_eq:NNTF}.
+%    \begin{macrocode}
+\prg_new_protected_conditional:Npnn \__syu_if_macro:n #1 { T , F , TF }
+  {
+    \group_begin:
+      \tl_set:Nx \l_tmpa_tl {\meaning #1}
+      \tl_set:Nx \l_tmpa_tl {\tl_range:Nnn \l_tmpa_tl {1} {5}}
+%    \end{macrocode}
+%   This is a trick to keep \cs{l_tmpa_tl} in the current local group
+%    \begin{macrocode}
+    \exp_after:wN
+    \group_end:
+%    \end{macrocode}
+%   while throwing the comparison result out.
+%    \begin{macrocode}
+      \if_meaning:w \l_tmpa_tl \g__syu_macro_tl
+        \prg_return_true:
+      \else:
+        \prg_return_false:
+      \fi:
+  }
+%    \end{macrocode}
+%  \end{variable}
+%
+% \subsection{Read formatting info}
+%  \begin{variable}{ \syu_secnum_from_seq:N  }
+%   Read the formatting info from given \meta{sequence}.
+%    \begin{macrocode}
+\cs_new_protected:Npn \syu_secnum_from_seq:N #1
+  {
+%    \end{macrocode}
+%   Use \cs{tl_gset:Nx} since: 1, these data are global and 
+%   2: I need them eating the fully expanded results.
+%    \begin{macrocode}
+    \tl_gset:Nx \g__syu_chapter_tl 
+      { \seq_item:Nn #1 { \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_section_tl 
+      { \seq_item:Nn #1 { 1 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subsection_tl
+      { \seq_item:Nn #1 { 2 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subsubsection_tl
+      { \seq_item:Nn #1 { 3 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_paragraph_tl
+      { \seq_item:Nn #1 { 4 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subparagraph_tl
+      { \seq_item:Nn #1 { 5 + \g__syu_if_thechapter_int } }
+  }
+%    \end{macrocode}
+%  \end{variable}
+%
+% \subsection{Formatting}
+%  \begin{variable}{ \syu_secnum:  }
+%   Formatting section numbering.
+%    \begin{macrocode}
+\cs_new:Nn \syu_secnum: 
+  {
+%    \end{macrocode}
+%   When \cs{thechapter} is defined, start from it.
+%    \begin{macrocode}
+    \if_cs_exist:N \thechapter
+      \renewcommand*{\thechapter}
+        { \g__syu_chapter_tl {chapter} }
+      \renewcommand*{\thesection}
+        { \thechapter
+          \g__syu_section_tl {section} }
+%    \end{macrocode}
+%   Otherwise start from \cs{thesection}.
+%    \begin{macrocode}
+    \else:
+      \renewcommand*{\thesection}
+        { \g__syu_section_tl {section} }
+    \fi:
+%    \end{macrocode}
+%   The rest levels.
+%    \begin{macrocode}
+      \renewcommand*{\thesubsection}
+        { \thesection
+          \g__syu_subsection_tl {subsection} }
+      \renewcommand*{\thesubsubsection}
+        { \thesubsection
+          \g__syu_subsubsection_tl {subsubsection} }
+      \renewcommand*{\theparagraph}
+        { \thesubsubsection
+          \g__syu_paragraph_tl {paragraph} }
+      \renewcommand*{\thesubparagraph}
+        { \theparagraph
+          \g__syu_subparagraph_tl {subparagraph} }
+  }
+%    \end{macrocode}
+%  \end{variable}
+%
+%    \begin{macrocode}
+%</package>
+%    \end{macrocode}
+%\end{implementation}
+%
+%
+% \changes{}{2020/01/01}{Correct the package name.}
+%
+% \Finale
+\endinput
\ No newline at end of file
diff --git a/Master/texmf-dist/tex/latex/secnum/secnum.sty b/Master/texmf-dist/tex/latex/secnum/secnum.sty
new file mode 100644
index 00000000000..c3e85d464d1
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/secnum/secnum.sty
@@ -0,0 +1,139 @@
+%%
+%% This is file `secnum.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% secnum.dtx  (with options: `package')
+%% 
+%% Copyright (C) 2019
+%% Gau, Syu ( GauSyu@Gmail.com )
+%% 
+%% ----------------------------------------------------------------------
+%% 
+%% 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 Maintainer of this work is
+%%   Gau, Syu ( GauSyu@Gmail.com ).
+%% 
+%% ----------------------------------------------------------------------
+%% 
+\NeedsTeXFormat{LaTeX2e}
+\RequirePackage{expl3}
+\ProvidesExplPackage{secnum}{2020/01/01}{}
+  { An intuitive way to format section numbering }
+\RequirePackage{xparse}
+\tl_new:N \l__syu_secnum_tl
+\seq_new:N \l__syu_secnum_seq
+\tl_new:N \g__syu_chapter_tl
+\tl_new:N \g__syu_section_tl
+\tl_new:N \g__syu_subsection_tl
+\tl_new:N \g__syu_subsubsection_tl
+\tl_new:N \g__syu_paragraph_tl
+\tl_new:N \g__syu_subparagraph_tl
+\int_new:N \g__syu_if_thechapter_int
+\if_cs_exist:N \thechapter
+  \int_gset:Nn \g__syu_if_thechapter_int 1
+\else:
+  \int_gset:Nn \g__syu_if_thechapter_int 0
+\fi:
+\DeclareDocumentCommand{\setsecnum}{m}
+  {
+    \tl_set:Nn \l__syu_secnum_tl {#1}
+    \syu_secnum_unabbr:N \l__syu_secnum_tl
+    \syu_split_by_macros:NN \l__syu_secnum_tl \l__syu_secnum_seq
+    \syu_secnum_from_seq:N \l__syu_secnum_seq
+    \setcounter{secnumdepth}{ \seq_count:N \l__syu_secnum_seq }
+    \syu_secnum:
+  }
+\cs_new_protected:Npn \syu_secnum_unabbr:N #1
+  {
+    \regex_replace_all:nnN {A} {\c{Alph}} #1
+    \regex_replace_all:nnN {a} {\c{alph}} #1
+    \regex_replace_all:nnN {I} {\c{Roman}} #1
+    \regex_replace_all:nnN {i} {\c{roman}} #1
+    \regex_replace_all:nnN {1} {\c{arabic}} #1
+  }
+\cs_new_protected:Npn \syu_split_by_macros:NN #1 #2
+  {
+    \tl_clear:N \l_tmpa_tl
+    \seq_clear:N #2
+    \tl_map_inline:Nn #1
+      {
+        \tl_put_right:Nn \l_tmpa_tl ##1
+        \__syu_if_macro:nT ##1
+          {
+            \seq_put_right:NV #2 \l_tmpa_tl
+            \tl_clear:N \l_tmpa_tl
+          }
+      }
+  }
+\tl_new:N \g__syu_macro_tl
+\tl_set:Nx \g__syu_macro_tl { \meaning \g__syu_macro_tl }
+\tl_gset:Nx \g__syu_macro_tl { \tl_range:Nnn \g__syu_macro_tl {1}{5} }
+\prg_new_protected_conditional:Npnn \__syu_if_macro:n #1 { T , F , TF }
+  {
+    \group_begin:
+      \tl_set:Nx \l_tmpa_tl {\meaning #1}
+      \tl_set:Nx \l_tmpa_tl {\tl_range:Nnn \l_tmpa_tl {1} {5}}
+    \exp_after:wN
+    \group_end:
+      \if_meaning:w \l_tmpa_tl \g__syu_macro_tl
+        \prg_return_true:
+      \else:
+        \prg_return_false:
+      \fi:
+  }
+\cs_new_protected:Npn \syu_secnum_from_seq:N #1
+  {
+    \tl_gset:Nx \g__syu_chapter_tl
+      { \seq_item:Nn #1 { \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_section_tl
+      { \seq_item:Nn #1 { 1 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subsection_tl
+      { \seq_item:Nn #1 { 2 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subsubsection_tl
+      { \seq_item:Nn #1 { 3 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_paragraph_tl
+      { \seq_item:Nn #1 { 4 + \g__syu_if_thechapter_int } }
+    \tl_gset:Nx \g__syu_subparagraph_tl
+      { \seq_item:Nn #1 { 5 + \g__syu_if_thechapter_int } }
+  }
+\cs_new:Nn \syu_secnum:
+  {
+    \if_cs_exist:N \thechapter
+      \renewcommand*{\thechapter}
+        { \g__syu_chapter_tl {chapter} }
+      \renewcommand*{\thesection}
+        { \thechapter
+          \g__syu_section_tl {section} }
+    \else:
+      \renewcommand*{\thesection}
+        { \g__syu_section_tl {section} }
+    \fi:
+      \renewcommand*{\thesubsection}
+        { \thesection
+          \g__syu_subsection_tl {subsection} }
+      \renewcommand*{\thesubsubsection}
+        { \thesubsection
+          \g__syu_subsubsection_tl {subsubsection} }
+      \renewcommand*{\theparagraph}
+        { \thesubsubsection
+          \g__syu_paragraph_tl {paragraph} }
+      \renewcommand*{\thesubparagraph}
+        { \theparagraph
+          \g__syu_subparagraph_tl {subparagraph} }
+  }
+\endinput
+%%
+%% End of file `secnum.sty'.
diff --git a/Master/tlpkg/bin/tlpkg-ctan-check b/Master/tlpkg/bin/tlpkg-ctan-check
index 8423b54ad13..8e827159a91 100755
--- a/Master/tlpkg/bin/tlpkg-ctan-check
+++ b/Master/tlpkg/bin/tlpkg-ctan-check
@@ -630,7 +630,7 @@ my @TLP_working = qw(
     scratch scratch3 scratchx screenplay screenplay-pkg
     scrjrnl scrlttr2copy scsnowman
     sdaps sdrt sduthesis
-    secdot section sectionbox sectionbreak sectsty seealso
+    secdot secnum section sectionbox sectionbreak sectsty seealso
     selectp selinput selnolig semantic semantic-markup semaphor
     seminar semioneside semproc sepfootnotes sepnum seqsplit
     serbian-apostrophe serbian-date-lat serbian-def-cyr serbian-lig
diff --git a/Master/tlpkg/libexec/ctan2tds b/Master/tlpkg/libexec/ctan2tds
index 3e261341125..cc3869e3627 100755
--- a/Master/tlpkg/libexec/ctan2tds
+++ b/Master/tlpkg/libexec/ctan2tds
@@ -2766,6 +2766,7 @@ my $core_latex = "$Master/texmf-dist/tex/latex";
  'pxrubrica'    => 'platex',
  'schedule'     => 'latex',  # requires interaction
  'scontents'	=> 'etex',
+ 'secnum'	=> 'tex',
  'silence'      => 'latex -translate-file=empty.tcx',   # no 8-bit
  'skdoc'        => 'tex',
  'svg'		=> 'etex -interaction=nonstopmode',
diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
index 2ab5c93f0c7..8d78bf802db 100644
--- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
@@ -1018,6 +1018,7 @@ depend scrlttr2copy
 depend sdaps
 depend sdrt
 depend secdot
+depend secnum
 depend sectionbox
 depend sectionbreak
 depend sectsty
diff --git a/Master/tlpkg/tlpsrc/secnum.tlpsrc b/Master/tlpkg/tlpsrc/secnum.tlpsrc
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/Master/tlpkg/tlpsrc/secnum.tlpsrc