new generic package catcodes (21sep12)

git-svn-id: svn://tug.org/texlive/trunk@27763 c570f23f-e606-0410-a88d-b1316a301751

9 files changed, 591 insertions, 0 deletions

diff --git a/Master/texmf-dist/doc/generic/catcodes/README b/Master/texmf-dist/doc/generic/catcodes/README
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index 00000000000..18ac9ae658e
--- /dev/null
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@@ -0,0 +1,54 @@
+
+               README for the `catcodes' bundle
+                   (C) Uwe Lueck 2012/09/20
+
+The `catcodes' bundle deals with category code switching. 
+The contained packages should work with LaTeX as well as without 
+(based on the `plainpkg' package). The important cases of category 
+codes are 
+(a) "private letters" for internal package commands and 
+(b) active characters. 
+`stacklet.sty' deals with (a), `actcodes.sty' with (b). 
+There also is 
+(c) `catchdq.sty', an application of (b), 
+for automatic insertion of typographical double quotes 
+when the user only enters ASCII double quotes. What is 
+"typographical" differs between languages, the new `langcode' 
+package completes `catchdq''s functionality in this respect.
+
+The documentation for the three package files is contained 
+in the file `catcodes.pdf'.
+
+REQUIRED PACKAGES: plainpkg, stacklet
+
+RELATED PACKAGES: catoptions, pcatcode (amsrefs), texapi, csquotes
+
+KEYWORDs: macro programming, category codes, private letters, 
+    active characters, double quotes
+
+The package files `actcodes.sty', `catchdq.sty', and 
+`stacklet.sty', together with the documentation files
+`catcodes.pdf' and `catcodes.tex', can be redistributed and/or
+modified under the terms of the LaTeX Project Public License;
+either version 1.3c of the License, or any later version, see
+
+    http://www.latex-project.org/lppl.txt
+
+There is NO WARRANTY, actually all of this still is a little 
+experimental.
+
+The `catcodes' bundle is author-maintained in the sense of
+the license.
+
+The latest public version of the bundle is available at
+
+    http://mirror.ctan.org/macros/generic/catcodes/
+
+A TDS version of the package is available as
+
+    http://mirror.ctan.org/install/macros/generic/catcodes.tds.zip
+
+Please report bugs, problems, and suggestions via
+
+    http://www.contact-ednotes.sty.de.vu
+ 
diff --git a/Master/texmf-dist/doc/generic/catcodes/SrcFILEs.txt b/Master/texmf-dist/doc/generic/catcodes/SrcFILEs.txt
new file mode 100644
index 00000000000..d10662cdb6b
--- /dev/null
+++ b/Master/texmf-dist/doc/generic/catcodes/SrcFILEs.txt
@@ -0,0 +1,12 @@
+
+ *File List*
+actcodes.sty  2012/09/19  v0.2   active characters (UL)
+stacklet.sty  2012/08/27  v0.3   private letters (UL)
+ catchdq.sty  2012/09/20  v0.2   simple typographic dqs (UL)
+catcodes.tex  2012/09/20   --    documenting catcodes files
+catcodes.RLS  2012/09/20  r0.1   initial release
+ ***********
+
+ List made at 2012/09/20, 13:00
+ from script file srcfiles.tex
+
diff --git a/Master/texmf-dist/doc/generic/catcodes/catcodes.pdf b/Master/texmf-dist/doc/generic/catcodes/catcodes.pdf
new file mode 100644
index 00000000000..8ac97a2df83
--- /dev/null
+++ b/Master/texmf-dist/doc/generic/catcodes/catcodes.pdf
diff --git a/Master/texmf-dist/source/generic/catcodes/catcodes.tex b/Master/texmf-dist/source/generic/catcodes/catcodes.tex
new file mode 100644
index 00000000000..8f38766e4b3
--- /dev/null
+++ b/Master/texmf-dist/source/generic/catcodes/catcodes.tex
@@ -0,0 +1,109 @@
+\ProvidesFile{catcodes.tex}[2012/09/20 documenting catcodes files]
+\title{\pkg{catcodes}\\---\\``Generic" Switching of Category Codes}
+% \listfiles
+{ \RequirePackage{makedoc} \ProcessLineMessage{}
+  \renewcommand\mdSectionLevelOne  {\string\subsection}
+  \renewcommand\mdSectionLevelTwo  {\string\subsubsection}
+  \MainDocParser{\SectionLevelTwoParseInput}
+  \HeaderLines{18}              %% 18 2012/08/26
+  \MakeSingleDoc{stacklet.sty}
+  \MakeSingleDoc{actcodes.sty}  %% 2012/08/26
+  \MakeSingleDoc{catchdq.sty}   %% 2012/09/16
+}
+\documentclass[fleqn]{article}%% TODO paper dimensions!?
+\input{makedoc.cfg} %% shared formatting settings
+% \ReadPackageInfos{stacklet}
+\MDkeywords{Macro programming, category codes, private letters, 
+            active characters, double quotes}
+\newcommand*{\headersec}{%
+    \subsection{Package File Header---\pkg{plainpkg} and Legalese}}
+\usepackage{ngerman} \originalTeX
+\usepackage{catchdq}
+\sloppy
+\begin{document}
+\maketitle
+\begin{MDabstract}
+The 'catcodes' bundle provides small packages for switching
+category codes, usable both with \LaTeX\ and without. \ 
+(i)\enspace \pkg{stacklet.sty} maintains stacks for ``private letters," 
+needed for 'plainpkg.tex''s minimal framework for ``generic" 
+packages. \ 
+(ii)\enspace \pkg{actcodes.sty} deals with ``active characters," 
+switching their category codes and assigning meanings to 
+``active-character tokens." \ 
+(iii)\enspace
+%% 2012/09/16:
+\pkg{catchdq.sty} uses the ``double quote" as an active character 
+for simplified access to typographical double quotes.---These 
+packages are ``generic" in the sense that they should 
+be usable at least both with \LaTeX\ and Plain \TeX, 
+based on 'plainpkg.tex'.
+
+\MDaddtoabstract{Required Packages}
+\ctanpkgref{plainpkg}, 'stacklet'
+\MDaddtoabstract{Related Packages} 
+\ctanpkgref{catoptions}, 'pcatcode' from \ctanpkgref{amsrefs}, 
+\ctanpkgref{texapi}, 
+\ctanpkgref{csquotes}.  %% 2012/09/16
+\end{MDabstract}
+\tableofcontents
+
+\section{Shared Features of Usage}
+%%% rm. 2012/09/17:
+% \section{General Background---Usage, Required}
+% The packages of this bundle are part of a certain family of 
+% ``generic" packages: They should work \emph{with} \LaTeX\ 
+% as well as \emph{without} \LaTeX, aiming at 
+% ``independency of format"---actully too much now~...
+% most importantly, they require \ctanpkgref{plainpkg}. 
+%%% rm 2012/09/16:
+% , 
+% and the latter's documentation should tell you about 
+% how to use the present packages.
+%
+All the packages of the bundle are ``\pkg{plainpkg} packages" 
+in the sense of the 
+\ctanpkgref{plainpkg}\foothttpurlref{ctan.org/pkg/plainpkg}
+documentation that exhibits details of what is summarized here. 
+Therefore:
+\begin{itemize}
+  \item All of them require that \TeX\ finds `plainpkg.tex' 
+        as well as `stackrel.sty'.
+  \item In order to load `<catcodes>.sty'
+        (where <catcodes> is `stacklet', `actcodes', or `catchdq'), 
+        type \ |\usepackage{<catcodes>}| \ within a \LaTeX\ document 
+        preamble, \ |\RequirePackage{<catcodes>}| \ in a 
+        ``\pkg{plainpkg} package", or \ |\input <catcodes>.sty| \
+        $\dots$ \ or perhaps `\input{<catcodes>.sty}'? 
+\end{itemize}
+
+\pagebreak
+\section{'stacklet.sty'---Private Letters}
+See Section~\ref{sec:stacklet-cmds} for the commands provided.
+\headersec
+\input{stacklet.doc}
+
+\pagebreak
+\section{'actcodes.sty'---Active Characters}
+See Section~\ref{sec:actcodes-cmds} for the commands provided.
+\headersec
+\input{actcodes.doc}
+
+\section{'catchdq.sty'---Proper Double Quotes by Toggling}
+See Section~\ref{sec:catchdq-cmds} for the commands provided.
+Note that the \ctanpkgref{csquotes} provides more comprehensive 
+functionality.
+\headersec
+\input{catchdq.doc}
+
+\end{document}
+
+VERSION HISTORY
+
+2012/08/24   for stacklet v0.1  very first
+2012/08/26   for stacklet v0.2   increased \HeaderLines, abstract; 
+             for actcodes v0.1  added ...
+2012/09/16f. for catchdq  v0.2  added ...
+2012/09/19                      "plainpkg packages", \pagebreaks, 
+                                Roman numbers in abstract, \headersec
+2012/09/19                      trying ngerman.sty
diff --git a/Master/texmf-dist/source/generic/catcodes/srcfiles.tex b/Master/texmf-dist/source/generic/catcodes/srcfiles.tex
new file mode 100644
index 00000000000..22951400e16
--- /dev/null
+++ b/Master/texmf-dist/source/generic/catcodes/srcfiles.tex
@@ -0,0 +1,16 @@
+\ProvidesFile{srcfiles.tex}[2012/09/20 file infos -> SrcFILEs.txt]
+\RequirePackage[r]{nicefilelist}
+\MFfieldtemplate{f-base}{catcodes}
+\RequirePackage{myfilist}
+\EmptyFileList %%% [readprov.sty,myfilist.sty]
+%% packages:
+\ReadPackageInfos{actcodes,catchdq,stacklet}
+%% documentation:
+\ReadFileInfos{catcodes}
+%% documentation settings and auxiliaries:
+% \ReadPackageInfos{fifinddo,makedoc,niceverb}
+% \ReadFileInfos{makedoc.cfg,mdoccorr.cfg,srcfiles}
+% \ReadFileInfos{srcfiles}
+\ReadFileInfos{catcodes.RLS}
+\ListInfos[SrcFILEs.txt]
+
diff --git a/Master/texmf-dist/tex/generic/catcodes/actcodes.sty b/Master/texmf-dist/tex/generic/catcodes/actcodes.sty
new file mode 100644
index 00000000000..3e6f516592f
--- /dev/null
+++ b/Master/texmf-dist/tex/generic/catcodes/actcodes.sty
@@ -0,0 +1,146 @@
+                                                 \input plainpkg
+\ProvidesPackage{actcodes}[2012/09/19 v0.2 active characters (UL)]
+%%
+%% Copyright (C) 2012 Uwe Lueck,
+%% http://www.contact-ednotes.sty.de.vu
+%% -- author-maintained in the sense of LPPL below --
+%%
+%% This file can be redistributed and/or modified under
+%% the terms of the LaTeX Project Public License; either
+%% version 1.3c of the License, or any later version.
+%% The latest version of this license is in
+%%     http://www.latex-project.org/lppl.txt
+%% There is NO WARRANTY (actually somewhat experimental).
+%%
+%% Please report bugs, problems, and suggestions via
+%%
+%%   http://www.contact-ednotes.sty.de.vu
+%%
+%%  == Purpose and Usage            ==
+%% The package derives from switching category codes 
+%% in the 'nicetext' and 'morehype' bundles and should 
+%% improve them. 
+%% 
+%% === Installing and Calling       ===
+%% The file `actcodes.sty' is provided ready, 
+%% installation only requires
+%% putting it somewhere where \TeX\ finds it
+%% (which may need updating the filename data
+%%  base).\urlfoot{ukfaqref}{inst-wlcf} 
+%% However, the files `plainpkg.tex' and `stacklet.sty' %% stacklet 2012/09/19
+%% must be installed likewise.
+%% 
+%% \emph{With} \LaTeX, the file should be loaded by `\RequirePackage{actcodes}'
+%% or `\usepackage{actcodes}'. 
+%% 
+%% \emph{Without} \LaTeX, load it by `\input actcodes.sty'.
+%%
+%% As explained in `plainpgk-doc.pdf', however, ``generic" 
+%% packages based on 'plainpkg' should load 'actcodes' by 
+%% `\RequirePackage{actcodes}'.
+%%
+%% === Commands and Syntax          ===
+%% \label{sec:actcodes-cmds}
+%% 'actcodes.sty' provides \ |\MakeActive|, |\MakeActiveAss|, 
+%% |\MakeActiveDef|, |\MakeActiveLet|, 
+%% |\MakeOther|, |\MakeActiveOther| \ with rather obvious 
+%% syntax---you find more detailed descriptions 
+%% mixed with implementation below ... TODO
+%% ---Without \LaTeX, the latter's internal |\@gobble<arg>|
+%% is provided as well.
+%% 
+%%  == The Code                     ==
+%% === Our Private Letters          ===
+\PushCatMakeLetterAt
+%%
+%% === The Core                     ===
+%% |\MakeActiveAss<ass-fun>\<char><ass-args>| ``activates" <char> 
+%% and then applies assignment function <ass-fun> with arguments 
+%% <ass-args> to it. The code derives from \LaTeX's
+%% `\@sverb' and `\do@noligs' and was also discussed 
+%% on the \acro{LATEX-L} mailing list September 2010
+%% (Will Robertson; Heiko Oberdiek). 
+%% The present definition generalizes 
+%% `\MakeActiveDef' and `\MakeActiveLet' of my earlier packages.
+\gdef\MakeActiveAss#1#2{%
+  \MakeActive#2%
+  \begingroup \lccode`\~`#2\relax \lowercase{\endgroup #1~}} 
+%% I was reluctant to provide |\MakeActive\<char>|, 
+%% but with 'catchdq.sty', it would be better ...   %% 2012/09/16
+\gdef\MakeActive#1{\catcode`#1\active}
+%% ... it just ``revives" the meaning that the corresponding 
+%% active-character token last time ...
+%%
+%% === \cs{def} and \cs{let}        ===
+%% |\MakeActiveDef\<char><parameters>{<replace>}| 
+%% has been employed in 'fifinddo' and 'blog' 
+%% (which is based on 'fifinddo') so far. 
+\gdef\MakeActiveDef{\MakeActiveAss\def}
+%% W.r.t.\ the definition of this `\MakeActiveDef', 
+%% Heiko Oberdiek remarked that it allows \emph{macro parameters}, 
+%% as opposed to my earlier definition in 'fifinddo'. 
+%% Without parameters, this kind of macro has been used for 
+%% conversion of text encodings ('atari.fdf', 
+%% and I thought this was the idea of \ctanpkgref{stringenc} ...).
+%% 
+%% |\MakeActiveLet\<char><cmd>| has been provided in 'niceverb' so far. 
+%% The present package has been made in order to have 
+%% `\MakeActiveLet' with 'blog.sty' as well, it was too annoying 
+%% to use `\MakeActiveDef' there so often.
+\gdef\MakeActiveLet{\MakeActiveAss\let}
+%% 
+%% === Switching Back \textellipsis ===
+%% Sometimes, the ``active" behaviour of <char> is too difficult, 
+%% and you may want to switch bach to its ``simple" way ... 
+%% This may work by |\MakeOther\<char>| ... 
+%% with \LaTeX, `\MakeOther' just is `\@makeother' ...
+\ifltx \global\let\MakeOther\@makeother
+\else  \gdef\MakeOther#1{\catcode`#112\relax}
+\fi
+%% But within a macro (or other) argument, you can't change the `\catcode'. 
+%% (I~lost some time by not realizing that it was within a large argument 
+%%  where I tried to switch the `\catcode'.)
+%% Anyway or in certain cases, it may be better to keep a character 
+%% ``active" throughout a document and just to change the \emph{expansion}
+%% of the ``active-character token." This can be done with 
+%% `\MakeActiveLet' and `\MakeActiveDef' in certain cases already. 
+%% E.g., when the \emph{``blank space"} has been ``activated" by 
+%% `\obeylines', `\MakeActiveLet\ \space' ``undoes" this half-way, 
+%% while it does not restore ``argument skipping" and 
+%% ``compressing blank spaces."
+%% 
+%% When character <char> should be ``active" for some time, 
+%% but for certain moments you prefer that it behaves like an 
+%% ``other character", you can switch to its ``other" expansion by 
+%% |\MakeActiveOther\<char>|:
+\gdef\MakeActiveOther#1{%
+    \MakeActiveAss\edef#1{\expandafter\@gobble\string#1}}
+%% `\MakeActiveOther' uses \LaTeX's |\@gobble<arg>|, 
+%% \emph{without} \LaTeX, 'actcodes' provides it:
+\ifltx\else \long\gdef\@gobble#1{} \fi
+% \show_ \MakeActiveOther\_ \show_ \expandafter\show_
+%% I am \emph{not} providing a version \emph{without}
+%% the `\catcode' change, although the latter is superfluous here
+%% TODO ...
+%% 
+%% `niceverb' also provides `\MakeNormal\<char>', it may migrate 
+%% to here in the future, and there may be |\MakeActiveNormal\<char>|
+%% extending the above `\MakeActiveOther' TODO ...
+%% 
+%% Also, a \emph{stack} might be used as in 'stacklet', 
+%% even to switch \emph{meanings} of active-character tokens ... 
+%% not sure TODO ...
+%% 
+%% \ctanpkgref{babel} does similar things, but I never have ... TODO
+%%
+%% === Leaving and Version History  ===
+\PopLetterCatAt
+\endinput
+%%
+%% VERSION HISTORY
+
+v0.1   2012/08/26   started, almost completed 
+       2012/08/27   completed; realizing \Push...At ..., bug fixes
+v0.2   2012/08/28   \global\let, \def -> \gdef
+       2012/09/16   \MakeActive
+       2012/09/19   doc: stacklet
diff --git a/Master/texmf-dist/tex/generic/catcodes/catchdq.sty b/Master/texmf-dist/tex/generic/catcodes/catchdq.sty
new file mode 100644
index 00000000000..f98ddf717f9
--- /dev/null
+++ b/Master/texmf-dist/tex/generic/catcodes/catchdq.sty
@@ -0,0 +1,133 @@
+                                                 \input plainpkg
+\ProvidesPackage{catchdq}[2012/09/20 v0.2 simple typographic dqs (UL)]
+%%
+%% Copyright (C) 2012 Uwe Lueck,
+%% http://www.contact-ednotes.sty.de.vu
+%% -- author-maintained in the sense of LPPL below --
+%%
+%% This file can be redistributed and/or modified under
+%% the terms of the LaTeX Project Public License; either
+%% version 1.3c of the License, or any later version.
+%% The latest version of this license is in
+%%     http://www.latex-project.org/lppl.txt
+%% There is NO WARRANTY (actually somewhat experimental).
+%%
+%% Please report bugs, problems, and suggestions via
+%%
+%%   http://www.contact-ednotes.sty.de.vu
+%%
+%%  == Purpose and Usage            ==
+%% 
+%% === Installing and Calling       ===
+%% The file `catchdq.sty' is provided ready, 
+%% installation only requires
+%% putting it somewhere where \TeX\ finds it
+%% (which may need updating the filename data
+%%  base).\urlfoot{ukfaqref}{inst-wlcf} 
+%% However, the files `plainpkg.tex' and `stacklet.sty' %% stacklet 2012/09/19
+%% must be installed likewise.
+%% 
+%% \emph{With} \LaTeX, the file should be loaded by `\RequirePackage{catchdq}'
+%% or `\usepackage{catchdq}'. 
+%% 
+%% \emph{Without} \LaTeX, load it by `\input catchdq.sty'.
+%%
+%% As explained in `plainpgk-doc.pdf', however, ``generic" 
+%% packages based on 'plainpkg' should load 'catchdq' by 
+%% `\RequirePackage{catchdq}'.
+%%
+%% === Commands and Syntax          ===
+%% \label{sec:catchdq-cmds}
+%% 'catchdq.sty' (indirectly) allows using |"<no-dqs>"|
+%% for surrounding <no-dqs> with typographical quotation marks, 
+%% using that double quote |"| as an active character. 
+%% As rendering that `"' active during defining macros can 
+%% corrupt the latter, the user (or package writer) must 
+%% activate that `"' explicitly by |\catchdqs|. 
+%%
+%% Further difficulties may arise after `\catchdqs', 
+%% various ways to get around them are described in the remaing sections.
+%% 
+%%  == The Code                     ==
+%% === Required ===
+%% The package is an application (of ideas of) 'actcodes.sty':
+\RequirePackage{actcodes}
+%%
+%% === The Core: \cs{catchdq} ===
+%% % \label{sec:catchdq-core}
+%% |\catchdq<no-dqs>"| will expand to |\dqtd{<no-dqs>}|, 
+%% provided the \acro{ASCII} double quote is an active character: 
+{\MakeActive\"\gdef\catchdq#1"{\dqtd{#1}}}
+%% 
+%% === What Double Quotes Actually Are ===
+%% |\dqtd| in turn is a kind of ``variable." 'blog.sty' offered 
+%% |\endqtd| for English typographical double quotes, 
+%% |\dedqtd| for German ones, and |\asciidqtd| for ``non-typographical" 
+%% double quotes (as needed for \acro{XML} attributes).
+%% |\asciidq| accesses a single \acro{ASCII} double quote, 
+%% |\enldq| a single English typographical left one, 
+%% |\enrdq| a single English typographical right one. 
+%% (It may be useful to access them indepentently of each other, 
+%%  in certain complex situations ...)
+%% 'blog.sty', dealing with \acro{HTML}, of course has different ideas 
+%% about them TODO.
+\gdef\asciidq{"}
+\gdef\asciidqtd#1{"#1"}
+%% We allow loading 'catchdq' \emph{after} another package 
+%% (such as 'blog.sty') has chosen meanings for `\endqtd' and the 
+%% like (difficult TODO)
+\ifx\enldq \undefined \gdef\enldq{``}                \fi
+\ifx\enrdq \undefined \global\let\enrdq\asciidq      \fi
+\ifx\endqtd\undefined \gdef\endqtd#1{\enldq#1\enrdq} \fi
+%% Typographical alternatives to `\endqtd' may be obtained 
+%% from \CtanPkgRef{ngerman}{ngerman.sty} or so, if you are smart ...
+%% %% <- 2012/09/20 ->
+%% (see Section~\ref{sec:sw} for how it works):
+\ifx\dedqtd\undefined \gdef\dedqtd#1{\glqq#1\grqq}   \fi
+%% 'blog.sty', dealing with \acro{HTML}, had a different idea 
+%% about `\endqtd' of course. It has also used the mechanism of 
+%% the \ctanpkgref{langcode} package that allows using `\dqtd' and other 
+%% language-depended constructs with an ``implicit" choice according 
+%% to the ``current language code," which should appear soon.
+%% 
+%% === Switching ===
+%% \label{sec:sw}
+%% 'blog.sty' usually does a single switch which gets a new name now:
+%% |\catchdqs|.
+\gdef\catchdqs{\MakeActiveLet\"\catchdq}
+%% After this, |"<no-dqs>"| will expand to `\dqtd{#1}'.
+%% The default expansion for |\dqtd| will be |\endqtd|:
+\ifx\dqtd\undefined \global\let\dqtd\endqtd \fi
+%% Might be done by |\endqs|---when there are alternatives, 
+%% but 'blog.sty' and 'langcode.sty' do this in a different way ... TODO 
+% \gdef\endqs{\let\dqtd\endqtd}
+% \ifx\dqtd\undefined \global\endqs \fi
+%% \catchdqs Actually, here is a little "Tessst"~...
+%% \let\dqtd\dedqtd \ and here with "doytshe doppleta anf..." $\dots$ \ 
+%% This has been achieved by 
+%% \[`\usepackage{ngerman} \originalTeX'\]
+%% \MakeOther\"
+%% 
+%% |\MakeOther\"| may switch off catching mode (---done just before, 
+%%  as \ctanpkgref{niceverb} at present doesn't render it verbatim). 
+%%                                  'actcodes' suggests 
+%% a different way to return from the `\catchdqs' state: 
+%% Let the character active and change its meaning only, let it 
+%% \emph{expand} to its ``other" version---by |\activeasciidqs|?
+%% |\MakeActiveOther\"| and \catchdqs 
+%% \let"\asciidq 
+%% |\let"\asciidq| (it works!) or |\MakeActiveLet\"\asciidq|
+%% (abbreviate as `\activeasciidqs'?) ... In 'blog.sty', there never 
+%% was a need for switching back. We must rework interaction with 
+%% 'niceverb' and can perhaps simplify the latter, ... TODO
+%%
+%% === Leaving and Version History  ===
+\endinput
+%%
+%% VERSION HISTORY
+ 
+v0.1   2010/11/13   in texblog.fdf
+v0.2   2012/09/17   own file, new ideas ... 
+       2012/09/19   doc: stacklet
+       2012/09/20   \dedqtd conditionally; reworked doc., 
+                    tested ngerman.sty
diff --git a/Master/texmf-dist/tex/generic/catcodes/catcodes.RLS b/Master/texmf-dist/tex/generic/catcodes/catcodes.RLS
new file mode 100644
index 00000000000..7a74abb475a
--- /dev/null
+++ b/Master/texmf-dist/tex/generic/catcodes/catcodes.RLS
@@ -0,0 +1,2 @@
+\ProvidesFile{catcodes.RLS}     %% RELEASE INFO
+    [2012/09/20 r0.1 initial release]
diff --git a/Master/texmf-dist/tex/generic/catcodes/stacklet.sty b/Master/texmf-dist/tex/generic/catcodes/stacklet.sty
new file mode 100644
index 00000000000..3324a8391e3
--- /dev/null
+++ b/Master/texmf-dist/tex/generic/catcodes/stacklet.sty
@@ -0,0 +1,119 @@
+                                                 \input plainpkg
+\ProvidesPackage{stacklet}[2012/08/27 v0.3 private letters (UL)]
+%%
+%% Copyright (C) 2012 Uwe Lueck,
+%% http://www.contact-ednotes.sty.de.vu
+%% -- author-maintained in the sense of LPPL below --
+%%
+%% This file can be redistributed and/or modified under
+%% the terms of the LaTeX Project Public License; either
+%% version 1.3c of the License, or any later version.
+%% The latest version of this license is in
+%%     http://www.latex-project.org/lppl.txt
+%% There is NO WARRANTY (actually somewhat experimental).
+%%
+%% Please report bugs, problems, and suggestions via
+%%
+%%   http://www.contact-ednotes.sty.de.vu
+%%
+%%  == Usage                    ==
+%% === Installing and Calling   ===
+%% The file `stacklet.sty' is provided ready, 
+%% installation only requires
+%% putting it somewhere where \TeX\ finds it
+%% (which may need updating the filename data
+%%  base).\urlfoot{ukfaqref}{inst-wlcf} 
+%% However, the file `plainpkg.tex' must be installed likewise.
+%% 
+%% \emph{With} \LaTeX, the file should be loaded by `\RequirePackage{stacklet}'
+%% or `\usepackage{stacklet}'. 
+%% 
+%% \emph{Without} \LaTeX, both `\input stacklet.sty' and 
+%% `\input plainpkg' load `stacklet.sty'.
+%%
+%% === Commands and Syntax      ===
+%% \label{sec:stacklet-cmds}
+%% 'stacklet.sty' provides 
+%% \[|\PushCatMakeLetter\<char>|
+%%   \quad \textit{and}\quad 
+%%   |\PopLetterCat\<char>|\]
+%% for getting ``private letters" and giving them back
+%% their previous category code
+%% in package files with or without \LaTeX.
+%% As \LaTeX\ has its own stack for `@', there are also 
+%% \[|\PushCatMakeLetterAt|
+%%   \quad \textit{and}\quad 
+%%   |\PopLetterCatAt|\]
+%% that care for `@''s category code \emph{without} \LaTeX\ only.
+%% 
+%%  == The Code                 ==
+%% === Name Space               ===
+%% Each ``private letter" <char> gets its own stack, 
+%% in some name space, determined by |\cat_stack|
+%% (`\withcsname' is from 'plainpkg.tex'):
+\withcsname\xdef cat_stack\endcsname{%
+    \noexpand\string \withcsname\noexpand cat_stack\endcsname
+        \noexpand\string}
+%% I.e., ?`cat_stack' will expand to 
+%% \[?`string'\,?`cat_stack'\,?`string'\]
+%% in the notation of the \ctanpkgref{dowith} package.
+% \withcsname\show cat_stack\endcsname
+%% 
+%% === Pushing                  ===
+%% |\PushCatMakeLetter\<char>| ...
+\xdef\PushCatMakeLetter#1{%
+  \noexpand\withcsname
+    \withcsname\noexpand pushcat_makeletter\endcsname
+      \withcsname\noexpand cat_stack\endcsname#1\endcsname#1}
+% \show\PushCatMakeLetter
+\withcsname\gdef pushcat_makeletter\endcsname#1#2{%
+%% #1 is the stack token, #2 is the ``quoted" character. Pushing~...
+    \xdef#1{\the\catcode`#2\relax%
+%% ... the new entry. `\relax' separates entries, 
+%% braces instead tend to get lost in popping ...
+%% If the stack has existed before, 
+%% its previous content is appended:
+            \ifx#1\relax \else #1\fi}%
+%% I thought of storing `\catcode's hexadecimally (without braces) 
+%% using \LaTeX's `\hexnumber', but the latter has so many tokens~...
+%% Finally rendering <char> a ``letter":
+    \catcode`#211\relax}
+%% Now we can use a ``private letter stack" for our own package:
+\PushCatMakeLetter\_
+%%
+%% === Popping                  ===
+%% |\PopLetterCat\<char>| passes `\<char>', the corresponding 
+%% stack token, and the latter's expansion to `\popcat_'. 
+%% `\end' serves as argument delimiter for the end of the stack only:
+\gdef\PopLetterCat#1{%
+  \expandafter\expandafter\expandafter
+    \popcat_\csname\cat_stack#1\expandafter\endcsname
+      \expandafter \end \csname\cat_stack#1\endcsname#1}
+%% `\popcat_' parses the expansion, assigns the old 
+%% category code and and stores the reduced stack:
+\gdef\popcat_#1\relax#2\end#3#4{\catcode`#4#1\gdef#3{#2}}
+%% ... check existence? TODO
+%%
+%% === No `@' Stack with \LaTeX ===
+%% |\PushCatMakeLetterAt| is like `\PushCatMakeLetter\@'
+%% except that it has no effect under \LaTeX:
+\gdef\PushCatMakeLetterAt{\ifltx\else\PushCatMakeLetter\@\fi}
+%% |\PopLetterCatAt| by analogy ...
+\gdef\PopLetterCatAt{\ifltx\else\PopLetterCat\@\fi}
+%% 
+%% === Leaving the Package File ===
+%% ... in our new way:
+\PopLetterCat\_
+\endinput
+%%
+%% === VERSION HISTORY ===
+
+v0.1   2012/08/24   started
+       2012/08/25   completed
+       2012/08/26   extending doc.; \def\withcsname removed
+v0.2   2012/08/26   \with_catstack containing \endcsname and with
+                    three popping macros replaced by \csname 
+                    content \cat_stack, cf. memory.tex; 
+                    restructured
+       2012/08/27   \PushCatMakeLetterAt fixed
+v0.3   2012/08/27   def.s global