% ======================================================================
% scrsource.tex
% Copyright (c) Markus Kohm, 2002-2022
%
% This file is part of the LaTeX2e KOMA-Script bundle.
%
% This work may be distributed and/or modified under the conditions of
% the LaTeX Project Public License, version 1.3c of the license.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3c or later is part of all distributions of LaTeX 
% version 2005/12/01 or later and of this work.
%
% This work has the LPPL maintenance status "author-maintained".
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% The Current Maintainer and author of this work is Markus Kohm.
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% This work consists of all files listed in manifest.txt.
% ======================================================================
% $Id: scrsource.tex 3748 2022-03-09 10:02:51Z kohm $

% Try to get the version of KOMA-Script from scrkernel-version.dtx.
\begingroup
  \def\ProvidesFile#1[#2]{\csname endinput\endcsname}%
  \input scrkernel-version.dtx
  \newcommand*{\ParseKOMAScriptVersion}{}
  \def\ParseKOMAScriptVersion#1/#2/#3 v#4 #5\ParseKOMAScriptVersion{%
    \gdef\filedate{#1\kern1pt-\kern0pt#2\kern1pt-\kern0pt#3}%
    \gdef\fileversion{#4}%
  }
  \expandafter
  \ParseKOMAScriptVersion\KOMAScriptVersion\ParseKOMAScriptVersion
  \gdef\filename{\jobname.tex}
\endgroup

\edef\releaselink{https://sf.net/p/koma-script/code/HEAD/tree/tags/release-\fileversion}
\edef\releaseurl{\noexpand\url{\releaselink}}

\ProvidesFile{scrsource.tex}[\KOMAScriptVersion (source)]
\documentclass[USenglish]{koma-script-source-doc}
\usepackage{babel}
\usepackage{alltt}

\title{\KOMAScript\,---\,The Source}
\date{Version \fileversion{} of \filedate}
\author{Markus Kohm}

\begin{document}
\maketitle
\begin{abstract}
  Formerly this was the implementation documentation of the whole
  \KOMAScript. But currently it is a dummy only, that explains how to make the
  implementation documentation from \KOMAScript{} v3.36 or newer.
\end{abstract}

\addsec{How to Make the Implementation Documentation}

To make the implementation documentation you either can use \file{l3build} to
make all files at once or do all the work step by step manually.

To be able to use \file{l3build} you need the original sources from
SourceForge. Best is, to use \file{subversion} to check out the sources of the
release you are currently using. If you, e.g., use \KOMAScript{} v\fileversion
you can checkout \releaseurl{} using:
\begin{alltt}\small
svn co \releaseurl koma-script-\fileversion
\end{alltt}
within a terminal window. Note: You have to make sure, that the Subversion
command line client \file{svn} is installed before.

This will copy the whole source of the release to a new directory
\file{koma-script-\fileversion}. Change to the directory and run:
\begin{verbatim}
l3build doc
\end{verbatim}
This will make a lot of new PDF files with the implementation documentation of
all the source files of \KOMAScript.

If you cannot use \file{l3build}, e.g., because you cannot checkout the
sources from SourceForge, you can just use an already installed legal
distribution of \KOMAScript. In this case:
\begin{itemize}
\item Copy all \file{*.dtx} files from the source directory of the installed
  \KOMAScript{} to a new directory where you have the right to write to.
\item Open the first of these files, e.g., \file{koma-script-source-doc.dtx},
  into your preferred \LaTeX{} editor and \emph{compile} the file using
  \file{lualatex-dev}. If you have already installed \LaTeX{} 2022/06/01 you
  can also use \file{lualatex} instead of \file{lualatex-dev}.

  Instead of using your \LaTeX{} editor, you can also use
\begin{verbatim}
lualatex-dev koma-script-source-doc.dtx
\end{verbatim}
  from a terminal. If you get an error because of missing
  \file{koma-script-source-doc.cls}, you do not have a correctly installed
  \KOMAScript. However, you can generate the class using
\begin{verbatim}
tex koma-script-source-doc.dtx
\end{verbatim}
  Note: You really have to use either \file{tex}, \file{pdftex}, \file{luatex}
  or \file{xetex} for this step and not \file{latex}, \file{pdflatex},
  \file{lualatex} or \file{xelatex}!

  If you want the index and the changes, you also have to run
\begin{verbatim}
makeindex -s gind.ist koma-script-source-doc
makeindex -s gglo.ist -o koma-script-source-doc.gls koma-script-source.doc.glo
\end{verbatim}
  and also repeat the \file{lualatex-dev} and the two \file{makeindex} runs at
  least three or four times.
\item Repeat the last step for every \file{*.dtx} file replacing the
  \file{koma-script-source-doc} by the base name of the corresponding
  \file{*.dtx} file.
\end{itemize}

As you can see, using \file{l3build} is much easier.

\addsec{How to Make the Implementation Documentation \KOMAScript{} before 3.36}

In case of using an older \KOMAScript{} release, you have to check out the
older release (see above) and run:
\begin{verbatim}
make scrsource.pdf
\end{verbatim}
But this can be used with a Linux like build system using GNU make only. And
note: The implementation documentation of \KOMAScript{} up to version 3.35 was
generally in German.

\end{document}
% Local Variables:
% mode: latex
% ispell-local-dictionary: "en_US"
% eval: (flyspell-mode 1)
% TeX-master: t
% TeX-engine: luatex-dev
% eval: (setcar (or (cl-member "Index" (setq-local TeX-command-list (copy-alist TeX-command-list)) :key #'car :test #'string-equal) (setq-local TeX-command-list (cons nil TeX-command-list))) '("Index" "mkindex %s" TeX-run-index nil t :help "makeindex for dtx"))
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