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authorKarl Berry <karl@freefriends.org>2007-12-14 01:45:54 +0000
committerKarl Berry <karl@freefriends.org>2007-12-14 01:45:54 +0000
commitfc77b8d3f3622ede43e4c3277b3fbab79fb8d19c (patch)
tree5b178626d2021fb7ecaead7949df9b86b5fa0591
parenteb1442008618eb247e459e968cfb19e013fa7d02 (diff)
new latex package ted (12dec07)
git-svn-id: svn://tug.org/texlive/trunk@5772 c570f23f-e606-0410-a88d-b1316a301751
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-rw-r--r--Master/texmf-dist/source/latex/ted/ted.dtx1246
-rw-r--r--Master/texmf-dist/tex/latex/ted/ted.sty345
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+
+ The ted package
+
+ A (primitive) token list editor
+
+ Manuel P\'egouri\'e-Gonnard <mpg@math.jussieu.fr>
+
+Presentation
+------------
+
+Just like sed is a stream editor, ted is a token list editor. Actually, it is
+not as powerfull as sed, but its main feature is that it really works with
+tokens, not only characters.
+
+The ted package provides two user macros: \Substitute and \ShowTokens. The first
+one is maybe the most useful: it performs substitutions in token lists (even
+inside braces). The second displays each token of the list (one per line) with
+its catcode (in the list, not just the current one), and can be useful for
+debugging or for TeX learners.
+
+The ted package is designed to work well even if strange tokens (that is,
+unusual (charcode, catcode) pairs or tokens with a confusing meaning) occur in
+the list.
+
+Contents
+--------
+
+ted.sty: the package itself
+ted.pdf: the (english) documentation and commented code
+ted-fr.pdf: the french documentation
+
+ted.dtx: single source for both documentations and package
+
+Version info
+------------
+
+2007-12-09 v1.0 first release
+2007-12-12 v1.01 trivial bug fix
+
+License
+-------
+
+This material is subject to the LaTeX Project Public License. See
+http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html for the
+details of that license.
+
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+%
+% \iffalse /!\ utf-8 encoded file /!\
+%
+% ted package by Manuel P\'egouri\'e-Gonnard <mpg@math.jussieu.fr>
+% ----------------------------------------------------------------
+%
+% 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. 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
+% 2006/05/20 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The current maintainer of this work is Manuel P\'egouri\'e-Gonnard.
+%
+% This work consists of the file ted.dtx and the derived files ted.sty,
+% ted.pdf and ted-fr.pdf.
+%
+%
+%<*gobble>
+\ProvidesFile{ted.dtx}
+%</gobble>
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\ProvidesPackage{ted}
+%<*package>
+% \fi
+% \ProvidesFile{ted.dtx}
+ [2007/12/12 v1.01 \space token list editor \space (mpg)]
+% \iffalse
+%</package>
+% \fi
+% \CheckSum{774}
+% \CharacterTable
+% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+% Digits \0\1\2\3\4\5\6\7\8\9
+% Exclamation \! Double quote \" Hash (number) \#
+% Dollar \$ Percent \% Ampersand \&
+% Acute accent \' Left paren \( Right paren \)
+% Asterisk \* Plus \+ Comma \,
+% Minus \- Point \. Solidus \/
+% Colon \: Semicolon \; Less than \<
+% Equals \= Greater than \> Question mark \?
+% Commercial at \@ Left bracket \[ Backslash \\
+% Right bracket \] Circumflex \^ Underscore \_
+% Grave accent \` Left brace \{ Vertical bar \|
+% Right brace \} Tilde \~}
+% \iffalse
+%<*gobble>
+\begingroup
+%</gobble>
+%<*batchfile>
+\input docstrip
+\keepsilent
+\preamble
+
+ted package by Manuel P\string\'egouri\string\'e-Gonnard %
+<mpg@math.jussieu.fr>
+This is a generated file. See ted.dtx for license information.
+
+\endpreamble
+\askforoverwritefalse
+%\generate{\file{ted.ins}{\from{ted.dtx}{batchfile}}}
+%\generate{\file{ted.drv}{\from{ted.dtx}{driver}}}
+\generate{\file{ted.sty}{\from{ted.dtx}{package}}}
+\generate{\file{ted-fr.drv}{\from{ted.dtx}{pilote}}}
+%</batchfile>
+%<*gobble>
+\endgroup
+%</gobble>
+%<*driver|pilote>
+\documentclass[oneside, a4paper]{ltxdoc}
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{lmodern}
+\usepackage[babel=true, expansion=false]{microtype}
+\usepackage[bookmarks=false, colorlinks=true,
+ linkcolor=black, urlcolor=black]{hyperref}
+\usepackage{fixltx2e}
+\expandafter\newif\csname iffrenchdoc\endcsname % just hiding this if
+%<pilote>\frenchdoctrue
+%</driver|pilote>
+%<*gobble>
+\iffrenchdoc
+%</gobble>
+%<*pilote>
+\usepackage[lmargin=4.5cm, rmargin=3cm]{geometry}
+\OnlyDescription
+\usepackage[english, french]{babel}
+\FrenchFootnotes
+\newcommand*\eng[1]{\emph{\foreignlanguage{english}{#1}}}
+%</pilote>
+%<*gobble>
+\else
+%</gobble>
+%<*driver>
+\AlsoImplementation
+\usepackage[english]{babel}
+%</driver>
+%<*gobble>
+\fi
+%</gobble>
+%<*driver|pilote>
+\newcommand\pf{\textsf}
+\setcounter{tocdepth}{1}
+\renewcommand\thesubsubsection{\alph{subsubsection}}
+\settowidth\MacroIndent{\rmfamily\scriptsize 000\ }
+\setlength\MacroTopsep{0pt}
+\begin{document}
+ \DocInput{ted.dtx}
+\end{document}
+%</driver|pilote>
+%<*package>
+% \fi
+%
+% \GetFileInfo{ted.dtx}
+%
+% \title{\iffrenchdoc L'extension \pf{ted}\else The \pf{ted} package\fi}
+% \author{Manuel Pégourié-Gonnard\\
+% \href{mailto:mpg@math.jussieu.fr}{mpg@math.jussieu.fr}}
+% \date{\fileversion\ (\filedate)}
+%
+% \maketitle
+% \tracingmacros1
+% \iffrenchdoc\else \tableofcontents \fi
+% \tracingmacros0
+%
+% \section{Introduction}
+%
+% \iffrenchdoc
+%
+% Le nom de l'extension \pf{ted} signifie \eng{token list editor}, soit en
+% français \og éditeur de listes de lexèmes \fg{}. Comparé à \texttt{sed} dont
+% son nom s'inspire, il n'est pas très puissant : il ne sait faire
+% actuellement que deux choses avec les listes de lexèmes, à savoir les
+% afficher en détail, et y opérer des substitutions. Toutefois, sa
+% caractéristique principale est de travailler vraiment au niveau des lexèmes,
+% et non des simples caractères.
+%
+% L'extension \pf{ted} est capable de faire des substitutions même à
+% l'intérieur d'une paire d'accolades, et n'a pas de problèmes avec des
+% lexèmes particuliers. En fait, elle est conçue pour fonctionner même avec
+% des listes comportant des lexèmes très exotiques.
+%
+% \else
+%
+% Just like \texttt{sed} is a stream editor, \pf{ted} is a token list editor.
+% Actually, it is not as powerfull as \texttt{sed}, but its main feature is
+% that it really works with tokens, not only characters. At the moment, it can
+% do only two things with token lists: display it with full information on
+% each token, and perform substitutions (that is, replacing every occurence of
+% a sublist with another token list).
+%
+% The \pf{ted} package can perform substitutions inside groups, and don't
+% forbid any token in the lists. Actually, \pf{ted} is designed to work well
+% even if strange tokens (that is, unusual (charcode, \cs{catcode}) pairs or
+% tokens with a confusing \cs{meaning}) occur in the list.
+%
+% \fi
+%
+% \section{Usage}
+%
+% \iffrenchdoc
+%
+% L'extension \pf{ted} définit essentiellement deux macros publiques :
+% \cs{Substitute} et \cs{ShowTokens}. La première est la raison d'être de
+% \pf{ted}, mais au cours du développement de l'extension, la partie la plus
+% difficile et intéressante a été d'être capable d'écrire la deuxième. J'ai
+% donc décidé de la proposer à l'utilisateur, car je pense qu'elle peut être
+% utile, soit pour déboguer du code, soit pour apprendre \TeX.
+%
+% \medskip
+% \DescribeMacro{\Substitute}
+% La syntaxe de \cs{Substitute} est la suivante.
+% \begin{quote}
+% \cs{Substitute}\meta{*}\oarg{sortie}\marg{entrée}\marg{de}\marg{vers}
+% \end{quote}
+% Commençons par l'usage le plus simple : sans étoile ni argument optionel.
+% Sous cette forme, \cs{Substitute} remplace chaque occurence de la sous-liste
+% \meta{de} par \meta{vers} dans l'\meta{entrée}, et place le résultat dans le
+% registre à lexèmes \cs{ted@toks}. Comme \cs{Substitute} est sans doute
+% destiné à être utilisé par des auteurs de classe ou d'extensions, le |@|
+% dans le nom de ce registre ne devrait pas poser de problèmes la plupart du
+% temps.
+%
+% Quoi qu'il en soit, vous pouvez changer facilement le nom du registre
+% utilisé pour la sortie avec l'argument optionel en spécifiant le nom d'un
+% registre à lexèmes dans \meta{sortie}. En fait, vous voulez peut-être que la
+% sortie soit placée dans une macro et non un registre : dans ce cas, vous
+% pouvez spécifier par exemple \cs{def}\cs{macro} (ou
+% \cs{long}\cs{def}\cs{macro} etc.) comme argument optionel. Dans tous les
+% cas, \meta{sortie}|{trucs}| doit être une syntaxe légale d'affectation de
+% |truc| dans la sortie. Bien sûr, si vous demandez à ce que la sortie soit
+% placée dans une macro, vous devez veiller à ce qu'elle ne contienne pas de
+% dièses (caractère de paramètre) mal placés.
+%
+% La version étoilée de \cs{Substitute} a pour but de vous simplifier la vie
+% quand vous ne voulez pas spécifier explicitement une liste de lexèmes en
+% entrée, mais plutôt utiliser le contenu d'une macro ou d'un registre, en
+% développant une fois son premeir argument obligatoire avant de commancer à
+% travailler dessus. Ceci vous évite d'avoir à placer vous-même des
+% \cs{expandafter}, surtout dans le cas ou vous souhaitez utiliser l'argument
+% optionel. Cette fois, l'usage est inversé par rapport à l'argument optionel
+% : c'est la cas d'une macro qui est le plus naturel. Pour un registre de
+% lexèmes, vous devez écrire le \cs{the} vous même : ainsi, votre \meta{entrée}
+% pourra être de la forme \cs{macro}, ou \cs{the}\cs{toksreg}, ou toute autre
+% chose dont le 1-développement donne ce que vous voulez.
+%
+% La version avec deux étoiles a aussi pour but de vous épargner la peine
+% de contrôler vous-même le développement des arguments. Elle fonctionne comme
+% la version étoilée simple, mais développe cette fois ses trois arguments
+% obligatoires une fois avant de commencer à travailler. La même remarque que
+% pour la version étoilée simple s'applique concernant les macros et les
+% registres à lexèmes. J'espère que ces trois cas (de zéro à deux étoiles)
+% couvriront la plupart des usage courants. Pour une gestion plus souple du
+% développement des arguments, attendez \LaTeX$3$ !
+%
+% Le comportement de \cs{Substitute} devrait être évident la pluart du temps.
+% seul un cas particulier mérite sans doute une patite remarque : dans le cas
+% ou la liste \meta{de} est vide, la liste \meta{vers} est insérée entre
+% chaque paire de lexèmes de l'\meta{entrée} : en particulier elle n'est pas
+% insérée au début ni à la fin. Par exemple, |\Substitute{abc}{}{1}| placera
+% |a1b1c| dans \cs{ted@toks}.
+%
+% \medskip
+% \DescribeMacro{\ShowTokens}
+% La syntaxe de \cs{ShowTokens} est la suivante.
+% \begin{quote}
+% \cs{ShowTokens}\meta{*}\marg{liste}
+% \end{quote}
+% Dans sa forme simple, \cs{ShowTokens} se contente d'afficher la liste de
+% lexème, un par ligne. Pour les lexèmes de type caractère, l'affichage
+% comprte le caractère lui-même, suivi de l'indication de son code de
+% catégorie sous forme parlante (comme |blank space|, |letter|, etc.). Pour
+% les séquence de contrôles et les carctères actifs, le (début du)
+% \cs{meaning} est également affiché, sans dépasser les 80 colonnes de large
+% afin de ne pas perturber l'affichage par ligne.
+%
+% \DescribeMacro{\ShowTokensLogonly}
+% \DescribeMacro{\ShowTokensOnline}
+% Le comportement par défaut est d'afficher ces listes à la fois sur le
+% terminal et dans le fichier log. Si vous préférez que l'affichage n'ait lieu
+% que dans le fichier log, vous n'avez qu'à dire \cs{ShowTokensLogonly}. Si
+% vous souhaitez ensuite revenir au comportement par défaut, dites seulement
+% \cs{ShowTokensOnline}.
+%
+% La version étoilée de \cs{ShowTokens} fonctionne de la même façon que dans
+% le cas de \cs{Substitute} en développant son argument une fois avant d'en
+% commencer l'analyse. La même remarque que précédemment s'applique concernant
+% les macros et les registres.
+%
+% \medskip
+% J'aimerais conclure par la remarque suivante : au cours de la conception de
+% \pf{ted}, j'ai vraiment essayé de ne faire aucune hypothèse sur les lexèmes
+% présents dans la liste. Ainsi, vous pouvez utiliser librement des accolades,
+% des dièses, des espaces, des \cs{par}, des \cs{if}s, des \cs{bgroup} ou
+% \cs{egroup} dans toutes les listes de lexèmes. À ma connaissance à ce jour,
+% la seule limitation est que les séquences de contrôle qui apparaissent ne
+% doivent pas être (ou être \cs{let}-égales à) certaines des macros intimes de
+% \pf{ted}, commençant par \cs{ted@@}.
+%
+% \begin{quote}
+% Vous savez maintenant tout ce qu'il y a à savoir sur l'utilisation de
+% \pf{ted}. Si vous souhaitez vous pencher sur son implémentation, il vous
+% faudra lire les commentaires en anglais car je n'ai pas eu le courage de
+% documenter mon code en deux langues.
+% \end{quote}
+%
+% \begin{center}\large
+% C'est tout pour cette fois ! \\
+% Amusez-vous bien avec \LaTeX{} !
+% \end{center}
+%
+% \else
+%
+% The \pf{ted} package provides two user macros: \cs{Substitute} and
+% \cs{ShowTokens}. The first one is the primary goal of the package, but to be
+% able to do the second was the more difficult and interesting part while
+% writing the package. I made it into a user macro since I believe it can be
+% useful for debugging things, or for learning \TeX.
+%
+% \medskip
+% \DescribeMacro{\Substitute}
+% The syntax of \cs{Substitute} is as follows.
+% \begin{quote}
+% \cs{Substitute}\meta{*}\oarg{output}\marg{input}\marg{from}\marg{to}
+% \end{quote}
+% Let's begin with the basics. Without star or optional argument, the
+% \cs{Substitute} macro will replace each occurence of the \meta{from} token
+% list with \marg{to} in the \meta{input}, and put the result in the
+% \cs{toks} register \cs{ted@toks}. This macro has a |@| in its name, but
+% since I think the \cs{Substitute} macro will be essentially be used by class
+% or package writers, this should be ok.
+%
+% Anyway, if you don't like this name, you can specify another one as
+% \meta{output} using the optional argument. Your \meta{output} should be the
+% name of a \cs{toks} register. If you want the output to be put in a macro,
+% use \cs{def}\cs{macro} (or \cs{long}\cs{def}\cs{macro} or\ldots) as the
+% optional argument. Anyway, \meta{output}\marg{stuff} must be a legal syntax
+% for an assignment: using \cs{macro} as optional argument will not work (and
+% may actually result in chaos). Of course, if you want your output to be
+% placed in a macro, it should not contain unproperly placed hash signs
+% (that is, macro parameter tokens).
+%
+% The one-starred form of \cs{Substitute} is meant to help you when your
+% \meta{input} is not an explicit token list, but the contents of either a
+% macro or a \cs{toks} register, by expanding once its first mandatory
+% argument before proceeding. It spares you the pain of
+% using \cs{expandafter}s, especially in case you want to use the optional
+% argument too. This time, things are reversed compared to the optional
+% argument : using a macro instead of a toks register is easier. Actually,
+% with the starred form, the first argument can be \cs{macro} or
+% \cs{the}\cs{toksreg}, or anything whose one-time expansion is the token list
+% you want \cs{Substitute} to act upon.
+%
+% The two-starred form is also meant to avoid you trouble with development. It
+% expands its three mandatory arguments once before executiing. The remark
+% about macros and \cs{toks} register still holds. I hope this three cases
+% (from zero to two stars) will suffice for most purpose. For a better
+% handling of arguments expansion, wait for \LaTeX$3$!
+%
+% The action of \cs{Substitute} is pretty obvious most of the time. Maybe a
+% particular case needs some precision: when \meta{from} is empty, then the
+% \meta{to} list gets inserted between each two tokens of the \cs{input}, but
+% not before the first one. For example, \cs{Substitute}|{abc}{}{1}| puts
+% |a1b1c| in \cs{ted@toks}.
+%
+% \medskip
+% \DescribeMacro{\ShowTokens}
+% The syntax of \cs{ShowTokens} is as follows.
+% \begin{quote}
+% \cs{ShowTokens}\meta{*}\marg{list}
+% \end{quote}
+% In its simple form, \cs{ShowTokens} just shows the list, one token per line.
+% For characters tokens, its prints the character, and its category code in
+% human-friedly form (such as ``blank space'', ``letter'', etc.). For control
+% sequences and active characters, it also prints (the beginning of) their
+% current \cs{meaning} as a bonus.
+%
+% \DescribeMacro{\ShowTokensLogonly}
+% \DescribeMacro{\ShowTokensOnline}
+% The default is to show this list both in the terminal and in the log file.
+% If you don't want it to be printed on the terminal, just say
+% \cs{ShowTokensLogonly}. If you change your mind latter, you can restore the
+% default behaviour with \cs{ShowTokensOnline}.
+%
+% The starred form of \cs{ShowTokens} works the same as for \cs{Substitute}:
+% it expands its argument once before analysing and displaying it. The same
+% remarks hold: use \cs{macro} or \cs{the}\cs{toksreg} in the argument.
+%
+% \medskip
+% I would like to conclude with the following remark: I have really tried to
+% make sure \pf{ted}'s macros will work fine even with the wierdest token list.
+% In particular, you can freely use begin-group and end-group characters, hash
+% signs, spaces, \cs{bgroup} and \cs{egroup}, \cs{par}, \cs{if}s, as well as
+% exotic charcode-\cs{catcode} pairs in every argument of the macros. As far
+% as I am aware, the only restriction is you should not use
+% some\footnote{Precisely, none of the control sequence in the token lists
+% should be \cs{let}-equal to \cs{ted@@end}, \cs{ted@@special},
+% \cs{ted@@active} as defined below.} of the very private macros of \pf{ted}
+% (those beginning with \cs{ted@@}) in your token lists.
+%
+% \fi
+%
+% \StopEventually{}
+%
+% \section{Implementation}
+%
+% A important problem, when trying to substitute things in token lists, is to
+% handle begin-group and end-group tokens, since prevent us from to reading
+% the tokens one by one, and tend to be difficult to handle individually. Two
+% more kinds of tokens are special: the space tokens, since
+% they\footnote{Actually, only tokens with charcode $32$ and \cs{catcode}~$10$
+% (i.e. $32_{10}$ tokens) are concerned. However, we will process all
+% \cs{catcode}-$10$ tokens the same way.} cannot be grabbed as the undelimited
+% argument of a macro, and the parameter tokens (hash signs), since they
+% cannot be part of the delimiters in the parameter text of a macro. From now
+% on, ``special tokens'' thus denotes tokens with \cs{catcode} $1$, $2$, $6$
+% or $10$.
+%
+% To get rid of these problems, the \cs{Substitute} command procedes in three
+% steps. First, encode the input, replacing all special tokens with nice
+% control sequences representing them, then do the actual substitution, and
+% finally decode the output, replacing the special control sequences with the
+% initial special tokens.
+%
+% Encoding is the hard part. The idea is to try reading the tokens one by one;
+% for this we have two means: using a macro with one undelimited argument, or
+% something like \cs{let}. The former doesn't work well with \cs{catcode}~$1$,
+% $2$ or $10$ tokens, and the later do not see the name of the token (its
+% character code, or its name for a CS). So we need to use both
+% \cs{futurelet}, a ``grabbing'' macro with argument, and \cs{string} in order
+% to scan the tokens. Actually, the encoding procedes in two passes: in the
+% first, we try and detect the special tokens, storing their character codes
+% for later use, then do the the actual encoding in the last pass.
+%
+% Decoding also processes the tokens one by one, and is simpler, since special
+% cases are allready detected. There is, however, a trick with groups since,
+% when we encouter a begin-group character, we have to wait for the
+% corresponding end-group before adding the whole thing to the output. There
+% is also a simpler version of decoding, for \cs{ShowTokens}, for screen/log
+% output, with no need to use this trick, since it only outputs
+% \cs{catcode}-$12$ charachters. Finally, the substitution part uses a macro
+% with delimited argument, defined on the fly, using an idea of Jean-Côme
+% Charpentier.
+%
+% The code is divided as follows.
+% \begin{enumerate} \setlength\itemsep{0pt}%
+% \item Encoding -- (a) pre-scan (b) encode
+% \item Decoding
+% \item Substitution
+% \item Screen display for \cs{ShowTokens}
+% \item Definition of the user commands
+% \end{enumerate}
+%
+% \begin{macro}{\ted@toks}
+% \begin{macro}{\ted@list}
+% \begin{macro}{\ted@code}
+% Before we begin, just allocate (or give a nice name to) a few registers.
+% \begin{macrocode}
+\@ifdefinable\ted@toks{\newtoks\ted@toks}
+\@ifdefinable\ted@list{\let\ted@list\toks@}
+\@ifdefinable\ted@code{\let\ted@code\count@}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Encoding}
+%
+% \begin{macro}{\ted@encloop}
+% \begin{macro}{\ted@encloop@}
+% The two passes use the same loop for reading the input allmost token by
+% token. This loop grabs the next token through a \cs{futurelet}\ldots
+% \begin{macrocode}
+\newcommand\ted@encloop{%
+ \futurelet\@let@token
+ \ted@encloop@}
+% \end{macrocode}
+% \ldots then looks at it with some \cs{ifx} and \cs{ifcat} (non nested, since
+% the token could be an \cs{if} itself), in order to distinguish between
+% three cases: normal token, end reached, or special token. In the later case,
+% remember wich kind of special token it is, using a numeric code.
+% \begin{macrocode}
+\newcommand\ted@encloop@{%
+ \let\next\ted@do@normal
+ \ifx\@let@token\ted@@end
+ \let\next\ted@gobble@end
+ \fi
+ \ifcat\noexpand\@let@token##%
+ \ted@code0
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\@sptoken
+ \ted@code1
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\bgroup
+ \ted@code2
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\egroup
+ \ted@code3
+ \let\next\ted@do@special
+ \fi
+ \next}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@@end}
+% \begin{macro}{\ted@gobble@end}
+% Here we used the following to detect the end, then gobble it when reached.
+% \begin{macrocode}
+\newcommand\ted@@end{\ted@@end@}
+% \end{macrocode}
+% \begin{macrocode}
+\@ifdefinable\ted@gobble@end{%
+ \def\ted@gobble@end\ted@@end{}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\ted@sanitize}
+% \begin{macro}{\ted@@active}
+% Now, this detection method, with \cs{futurelet} and \cs{ifcat}, is unable to
+% distinguish the following three cases for potential special tokens: (i) a
+% ``true'' (explicit) special token, (ii) a CS \cs{let}-equal to a special
+% token, (iii) an active character \cs{let}-equal to a special token. While
+% this is pre-scanning's job to detect the (ii) case, the (iii) can be easily
+% got rid of by redefining locally all active characters.
+% \begin{macrocode}
+\count@\catcode\z@ \catcode\z@\active
+\newcommand\ted@sanitize{%
+ \count@\z@ \@whilenum\count@<\@cclvi \do{%
+ \uccode\z@\count@
+ \uppercase{\let^^00\ted@@active}%
+ \advance\count@\@ne}}
+\catcode\z@\count@
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@@active{\ted@@active@}
+% \end{macrocode}
+% This sanitizing macro also mark active characters by \cs{let}-ing them equal
+% to \cs{ted@@active} in ordrer to detect them easily later, for exemple while
+% displaying on-screen token analysis.
+% All operations (scanning, replacing, display and decoding) are going to
+% happen inside a group where \cs{ted@sanitize} has been executed, so that
+% active characters are no longer an issue.
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\ted@encode}
+% \begin{macro}{\ted@do@normal}
+% \begin{macro}{\ted@do@special}
+% The \cs{ted@encode} macro is the master macro for encoding. It only
+% initialise a few things and launches the two loops. We select one of the
+% tree stpes by \cs{let}-ing \cs{ted@do@normal} and \cs{ted@do@special} to
+% the appropriate action.
+% \begin{macrocode}
+\newcommand\ted@encode[1]{%
+ \ted@list{}%
+ \let\ted@do@normal\ted@gobble@encloop
+ \let\ted@do@special\ted@scan@special
+ \ted@encloop#1\ted@@end
+ \ted@toks{}%
+ \let\ted@do@normal\ted@addtoks@encloop
+ \let\ted@do@special\ted@special@out
+ \ted@encloop#1\ted@@end
+ \ted@assert@listempty}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@assert@listempty}
+% After the last loop, \cs{ted@list} should be empty. If it's not, it means
+% something very weird happened during the encoding procedure. I hope the code
+% below will never be executed :)
+% \begin{macrocode}
+\newcommand\ted@assert@listempty{%
+ \edef\next{\the\ted@list}%
+ \ifx\next\@empty \else
+ \PackageError{ted}{%
+ Assertion `\string\ted@list\space is empty' failed}{%
+ This should not happen. Please report this bug to the author.
+ \MessageBreak By the way, you're in trouble there... I'm sorry.}%
+ \fi}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Pre-scanning}
+%
+% \begin{macro}{\ted@gobble@encloop}
+% For normal tokens, things are pretty easy: just gobble them!
+% \begin{macrocode}
+\newcommand\ted@gobble@encloop{%
+ \afterassignment\ted@encloop
+ \let\@let@token= }
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@scan@special}
+% For special tokens, it's harder. We must distinguish explicit
+% character tokens from control sequences \cs{let}-equal to special tokens.
+% For this, we use \cs{string}, then grab the next character to see wether its
+% code is \cs{escapechar} or not. Actually, things are not this easy, for two
+% reasons. First, we have to make sure the next character's code is not
+% allready \cs{escapechar} before the \cs{string}, by accident. For this
+% purpose, we set \cs{escapechar} to~$0$ except if next character's code is
+% also~$0$, in which case we prefer~$1$.
+% \begin{macrocode}
+\count@\catcode\z@ \catcode\z@ 12
+\newcommand\ted@scan@special{%
+ \begingroup
+ \escapechar\if\@let@token^^00 \@ne \else \z@ \fi
+ \expandafter\ted@check@space\string}
+\catcode\z@\count@
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@check@space}
+% \begin{macro}{\ted@check@space@}
+% Second, we have to handle carefully the case of the next token being the
+% $32_{10}$ token, since we cannot grab this one with a macro. We are in this
+% case if and only if the token we just \cs{string}ed was a character token
+% with code $32$, and it is enough to check if next token's \cs{catcode} is
+% $10$ in order to detect it, since it will be $12$ otherwise. In order to
+% check this, we use \cs{futurelet} again for pre-scanning.
+% \begin{macrocode}
+\newcommand\ted@check@space{%
+ \futurelet\@let@token
+ \ted@check@space@}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@check@space@{%
+ \ifcat\@let@token\@sptoken
+ \endgroup
+ \ted@addlist{32}%
+ \expandafter\ted@gobble@encloop
+ \else
+ \expandafter\ted@list@special
+ \fi}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@list@special}
+% Now that we got rid of this nasty space problem, we know for sure that the
+% next token has \cs{catcode} $12$, so we can easily grab it as an argument,
+% find its charcode, and decide wether the original token was a control
+% sequence or not. Note the \cs{expandafter} over \cs{endgroup} trick, since
+% we need to add the charcode to the list outside the group (opened for the
+% modified \cs{escapechar}) though it was set inside.
+% \begin{macrocode}
+\newcommand*\ted@list@special[1]{%
+ \ted@code`#1\relax
+ \expandafter\expandafter\expandafter
+ \endgroup
+ \ifnum\ted@code=\escapechar
+ \ted@addlist{\m@ne}%
+ \else
+ \expandafter\ted@addlist\expandafter{\the\ted@code}%
+ \fi
+ \ted@encloop}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@addlist}
+% Here we used the following macro to add an element to the list, which is
+% space-separated.
+% \begin{macrocode}
+\newcommand*\ted@addlist[1]{%
+ \ted@list\expandafter{\the\ted@list#1 }}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Actually encoding}
+%
+% Remember that, before this last encoding pass, \cs{ted@encode} did the
+% following:
+% \begin{quote}
+% \cs{let}\cs{ted@do@normal}\cs{ted@addtoks@encloop}\\
+% \cs{let}\cs{ted@do@special}\cs{ted@special@out}
+% \end{quote}
+% \begin{macro}{\ted@addtoks@encloop}
+% The first one is very easy : normal tokens are just grabbed as arguments and
+% appended to the output, then the loop continues.
+% \begin{macrocode}
+\newcommand\ted@addtoks@encloop[1]{%
+ \ted@toks\expandafter{\the\ted@toks#1}%
+ \ted@encloop}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@special@out}
+% Special tokens need to be encoded, but before, just check if they are really
+% special: they aren't if the corresponding code is $-1$.
+% \begin{macrocode}
+\newcommand\ted@special@out{%
+ \ifnum\ted@list@read=\m@ne
+ \ted@list@advance
+ \expandafter\ted@cs@clean
+ \else
+ \expandafter\ted@special@encode
+ \fi}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@cs@clean}
+% Even if the potentially special token was not a real one, we have work to
+% do. Indeed, in the first pass we did break it using a \cs{string}, and thus
+% we introduced some foreign tokens in the stream. Most of them are not
+% important since they have \cs{catcode}~$12$. Anyway, some of them may be
+% space tokens : in this case we have extra $32$'s in our list. So, we need to
+% check this before going any further.
+% \begin{macrocode}
+\newcommand\ted@cs@clean[1]{%
+ \expandafter\ted@add@toks{#1}%
+ \expandafter\ted@cscl@loop\string#1 \@nil}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@cscl@loop}
+% We first add the CS to the output, then break it with a \cs{string} in order
+% to look at its name with the folowing loop. It first grabs everything to the
+% first space\ldots
+% \begin{macrocode}
+\@ifdefinable\ted@cscl@loop{%
+ \def\ted@cscl@loop#1 {%
+ \futurelet\@let@token
+ \ted@cscl@loop@}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@cscl@loop@}
+% \ldots and carefully look at the next token in order to know if we are
+% finished or not.
+% \begin{macrocode}
+\newcommand\ted@cscl@loop@{%
+ \ifx\@let@token\@nil
+ \expandafter\ted@gobble@encloop
+ \else
+ \ted@list@advance
+ \expandafter\ted@cscl@loop
+ \fi}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\ted@special@encode}
+% Now, let's come back to the special tokens. As we don't need the token to
+% encode it (we allready know its \cs{catcode} from \cs{ted@code}, and its
+% charcode is stored in the list), we first gobble it in order to prepare for
+% next iteration.
+% \begin{macrocode}
+\newcommand\ted@special@encode{%
+ \afterassignment\ted@special@encode@
+ \let\@let@token= }
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@special@encode@}
+% Then we encode it in two steps : first, create a control sequence with name
+% \cs{ted@@}\meta{code}\meta{charcode}, where code is a digit
+% denoting\footnote{I don't store the \cs{catcode} for two reasons : first,
+% having a single digit is easier; second, having the true catcode would be
+% useless (though it could maybe make the code more readable).} the
+% \cs{catcode} of the special token, \ldots
+% \begin{macrocode}
+\newcommand\ted@special@encode@{%
+ \expandafter\ted@special@encode@@\expandafter{%
+ \csname ted@@\the\ted@code\ted@list@read\endcsname}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@special@encode@@}
+% \begin{macro}{\ted@@special}
+% \ldots then, mark this CS as a special token encoding, in order to make it
+% easier to detect later, add it to the output and loop again.
+% \begin{macrocode}
+\newcommand*\ted@special@encode@@[1]{%
+ \ted@list@advance
+ \let#1\ted@@special
+ \ted@addtoks@encloop{#1}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@@special{\ted@@special@}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\ted@list@read}
+% \begin{macro}{\ted@list@read@}
+% Here we used the folowing macros in order to manage our charcode list. The
+% reading one is fully expandable.
+% \begin{macrocode}
+\newcommand\ted@list@read{%
+ \expandafter\ted@list@read@\the\ted@list\@nil}
+% \end{macrocode}
+% \begin{macrocode}
+\@ifdefinable\ted@list@read@{%
+ \def\ted@list@read@#1 #2\@nil{%
+ #1}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@list@advance}
+% \begin{macro}{\ted@list@advance@}
+% Since it's expandable, it cannot change the list, so we need a separate
+% macro to remove the first element from the list, once read.
+% \begin{macrocode}
+\newcommand\ted@list@advance{%
+ \expandafter\ted@list@advance@\the\ted@list\@nil}
+% \end{macrocode}
+% \begin{macrocode}
+\@ifdefinable\ted@list@advance@{
+ \def\ted@list@advance@#1 #2\@nil{%
+ \ted@list{#2}}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Decoding}
+%
+% \begin{macro}{\ted@add@toks}
+% Main decoding macro is \cs{ted@decode}. It is again a loop, processing the
+% token list one by one. For normal tokens, things are easy as allways: just
+% add them to the output, via
+% \begin{macrocode}
+\newcommand\ted@add@toks[1]{%
+ \ted@toks\expandafter{\the\ted@toks#1}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@decode}
+% Encoded special tokens are easily recognized, since they were \cs{let} equal
+% to \cs{ted@@special}. In order to decode it, we use the name of the CS. The
+% following macro uses \LaTeX-style \cs{if} in order to avoid potential
+% nesting problems when \cs{ifs} are present in the token list being
+% processed.
+% \begin{macrocode}
+\newcommand\ted@decode[1]{%
+ \ifx#1\ted@@end \expandafter\@gobble\else\expandafter\@firstofone\fi{%
+ \ifx#1\ted@@special
+ \expandafter\@firstoftwo
+ \else
+ \expandafter\@secondoftwo
+ \fi{%
+ \begingroup \escapechar\m@ne \expandafter\endgroup
+ \expandafter\ted@decode@special\string#1\@nil
+ }{%
+ \ted@add@toks{#1}}%
+ \ted@decode}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@decode@special}
+% The next macro should then gobble the |ted@@| part of the CS name, and use
+% the last part as two numeric codes (here we use the fact that the first one
+% is only a digit).
+% \begin{macrocode}
+\@ifdefinable\ted@decode@special{%
+ \begingroup\escapechar\m@ne \expandafter\endgroup\expandafter
+ \def\expandafter\ted@decode@special\string\ted@@#1#2\@nil{%
+% \end{macrocode}
+% It then prodeces according to the first code, building back the original
+% token and adding it to the output. The first two kinds of tokens (macro
+% parameter characters and blank spaces) are easily dealt with.
+% \begin{macrocode}
+ \ifcase#1
+ \begingroup \uccode`##=#2 \uppercase{\endgroup
+ \ted@add@toks{##}}%
+ \or
+ \begingroup \uccode32=#2 \uppercase{\endgroup
+ \ted@add@toks{ }}%
+ \or
+% \end{macrocode}
+% For begin-group and end-group characters, we have a problem, since they are
+% impossible to handle individually: we can only add a \meta{balanced text} to
+% the output. So, when we find a begin-group character, we just open a group
+% (a real one), and start decoding again inside the group, until we find the
+% correponding end-group character. Then, we enclose the local decoded list
+% of tokens into the correct begin-group/end-group pair, and then add it to
+% the output one group level below, using the
+% \cs{expandafter}-over-\cs{endgroup} trick (essential here).
+% \begin{macrocode}
+ \begingroup \ted@toks{}%
+ \uccode`{=#2
+ \or
+ \uccode`}=#2
+ \uppercase{\ted@toks\expandafter{\expandafter{\the\ted@toks}}}
+ \expandafter\endgroup
+ \expandafter\ted@add@toks\expandafter{\the\ted@toks}%
+ \fi}}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Substitution}
+%
+% For this part, the idea\footnote{for which I am grateful to Jean-Côme
+% Charpentier, who first taught me the clever use delimited arguments (and lots
+% of other wonderful things) in \nolinkurl{fr.comp.text.tex}} is to use a macro
+% whose first argument is delimited with the \meta{from} string, wich outputs
+% the first argument followed by the \meta{to} string, and loops. Obviously
+% this macro has to be defined on the fly. All tokens lists need to be encoded
+% first, and the output decoded at end. Since all this needs to happens inside
+% a group (for \cs{ted@sanitize} and the marking up of special-charaters
+% control sequences), remember to ``export'' \cs{ted@toks} when done.
+%
+% \begin{macro}{\ted@Substitude}
+% The main substitution macro is as follows. Arguments are \meta{input},
+% \meta{from}, \meta{to}. \cs{ted@output} will be discussed later.
+% \begin{macrocode}
+\newcommand\ted@Substitute[3]{%
+ \begingroup \ted@sanitize
+ \ted@encode{#3}%
+ \expandafter\ted@def@subsmac\expandafter{\the\ted@toks}{#2}%
+ \ted@encode{#1}%
+ \ted@subsmac
+ \ted@toks\expandafter{\expandafter}%
+ \expandafter\ted@decode\the\ted@toks\ted@@end
+ \expandafter\endgroup
+ \expandafter\ted@output\expandafter{\the\ted@toks}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@def@subsmac}
+% The actual iterative substitution macro is defined by the folowing macro,
+% whose arguments are the \meta{to} string, encoded, and the plain \meta{from}
+% string.
+% \begin{macrocode}
+\newcommand\ted@def@subsmac[2]{%
+ \ted@encode{#2}%
+ \long\expandafter\def\expandafter\ted@subsmac@loop
+ \expandafter##\expandafter1\the\ted@toks##2{%
+ \ted@add@toks{##1}%
+ \ifx##2\ted@@end
+ \expandafter\@gobble
+ \else
+ \expandafter\@firstofone
+ \fi{%
+ \ted@add@toks{#1}\ted@subsmac@loop##2}}%
+ \expandafter\ted@def@subsmac@\expandafter{\the\ted@toks}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@def@subsmac@}
+% While we have the encoded \meta{from} string at hand, define the start-loop
+% macro.
+% \begin{macrocode}
+\newcommand\ted@def@subsmac@[1]{%
+ \def\ted@subsmac{%
+ \ted@toks\expandafter{\expandafter}%
+ \expandafter\ted@subsmac@loop\the\ted@toks#1\ted@@end}}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Display}
+%
+% \begin{macro}{\ted@ShowTokens}
+% In order to display the tokens one by one, we first encode the string
+% \begin{macrocode}
+\newcommand\ted@ShowTokens[1]{%
+ \begingroup \ted@sanitize
+ \ted@toks{#1}%
+ \ted@typeout{--- Begin token decompositon of:}%
+ \ted@typeout{\@spaces \the\ted@toks}%
+ \ted@encode{#1}%
+ \expandafter\ted@show@toks\the\ted@toks\ted@@end
+ \endgroup
+ \ted@typeout{--- End token decomposition.}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@show@toks}
+% Then we proceed, allmost like decoding, iteratively, processing the encoded
+% tokens one by one. We detect control sequences the same way as in
+% pre-scanning.
+% \begin{macrocode}
+\count@\catcode\z@ \catcode\z@ 12
+\newcommand\ted@show@toks[1]{%
+ \ifx#1\ted@@end \expandafter\@gobble\else\expandafter\@firstofone\fi{%
+ \ted@toks{#1}%
+ \begingroup
+ \escapechar\if\noexpand#1^^00 \@ne \else \z@ \fi
+ \expandafter\ted@show@toks@\string#1\@nil
+ \ted@show@toks}}
+\catcode\z@\count@
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@show@toks@}
+% We stored the current token so that it can be used in the next macro, though
+% previously broken by the \cs{string}, and moreover we can nest the \cs{if}s
+% freely since it is hidden in a register (in case it would be a \cs{if}
+% itself). The four cases are : CS representing a special token, normal CS,
+% active character (since we cannot show its category with \cs{meaning}), and
+% finally normal character token.
+% \begin{macrocode}
+\@ifdefinable\ted@show@toks@{%
+ \long\def\ted@show@toks@#1#2\@nil{%
+ \expandafter\endgroup
+ \ifnum`#1=\escapechar
+ \expandafter\ifx\the\ted@toks\ted@@special
+ \ted@show@special#2\@nil
+ \else
+% \end{macrocode}
+% It's time to think about the following: we are inside a group where all
+% active characters were redefined, but we nonetheless want to display their
+% meaning. In order to do this, the display need to actually happen after the
+% current group is finished. For this we use \cs{aftergroup} (with specialized
+% macro for displaying each kind of token).
+% \begin{macrocode}
+ \aftergroup\ted@type@cs
+ \expandafter\aftergroup\the\ted@toks
+ \fi
+ \else \expandafter
+ \ifx\the\ted@toks\ted@@active
+ \aftergroup\ted@type@active
+ \expandafter\aftergroup\the\ted@toks
+ \else
+ \aftergroup\ted@type@normal
+ \expandafter\aftergroup\the\ted@toks
+ \fi
+ \fi}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@show@special}
+% Let's begin our tour of specialized display macro with the most important
+% one: \cs{ted@show@special}. Displaying the special token goes mostly the
+% same way as decoding them, but is far easier, since we don't need to care
+% about groups: display is done with \cs{catcode}~$12$ characters.
+% \begin{macrocode}
+\@ifdefinable\ted@show@special{%
+ \begingroup\escapechar\m@ne \expandafter\endgroup
+ \expandafter\def\expandafter\ted@show@special\string\ted@@#1#2\@nil{%
+ \ifcase#1
+ \aftergroup\ted@type@hash
+ \or
+ \aftergroup\ted@type@blank
+ \or
+ \aftergroup\ted@type@bgroup
+ \or
+ \aftergroup\ted@type@egroup
+ \fi
+ \begingroup \uccode`1#2
+ \uppercase{\endgroup\aftergroup1}}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@type@hash}
+% \begin{macro}{\ted@type@blank}
+% \begin{macro}{\ted@type@bgroup}
+% \begin{macro}{\ted@type@egroup}
+% \begin{macro}{\ted@type@normal}
+% The four macros for special tokens are obvious. So is the macro for normal
+% tokens. By the way, \cs{ted@typeout} will be discussed in the next section.
+% \begin{macrocode}
+\newcommand\ted@type@hash[1]{%
+ \ted@typeout{#1 (macro paramater character #1)}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@type@blank[1]{%
+ \ted@typeout{#1 (blank space #1)}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@type@bgroup[1]{%
+ \ted@typeout{#1 (begin-group character #1)}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@type@egroup[1]{%
+ \ted@typeout{#1 (end-group character #1)}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@type@normal[1]{%
+ \ted@typeout{#1 (\meaning#1)}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@type@cs}
+% \begin{macro}{\ted@type@active}
+% For control sequences and active characters, we use more sophisticated
+% macros. Indeed, their \cs{meaning} can be quite long, and since it is not so
+% important (\pf{ted}'s work is lexical analysis, displaying the \cs{meaning}
+% is just an add-on), we cut it so that lines are shorter than $80$ colons, in
+% order to save our one-token-a-line presentation.
+% \begin{macrocode}
+\newcommand\ted@type@cs[1]{%
+ \ted@type@long{\string#1 (control sequence=\meaning#1}}%
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@type@active[1]{%
+ \ted@type@long{\string#1 (active character=\meaning#1}}%
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@type@long}
+% Lines are cut and displayed by \cs{ted@type@long}. This macro uses a loop,
+% conting down how many columns remain on the current line. The input need to
+% be fully expanded first, and the output is stored in \cs{ted@toks}.
+% \begin{macrocode}
+\newcommand\ted@type@long[1]{%
+ \ted@toks{}%
+ \ted@code72
+ \edef\next{#1}%
+ \expandafter\ted@tl@loop\next\@nil}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@tl@loop}
+% The only difficult thing in this loop is to take care of space tokens. For
+% this we use again our \cs{futurelet} trick:
+% \begin{macrocode}
+\newcommand\ted@tl@loop{%
+ \futurelet\@let@token
+ \ted@tl@loop@}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@tl@loop@}
+% \ldots then check what to do.
+% \begin{macrocode}
+\newcommand\ted@tl@loop@{%
+ \ifx\@let@token\@nil
+ \let\next\ted@tl@finish
+ \else
+ \advance\ted@code\m@ne
+ \ifnum\ted@code<\z@
+ \let\next\ted@tl@finish
+ \else
+ \ifx\@let@token\@sptoken
+ \let\next\ted@tl@space
+ \else
+ \let\next\ted@tl@add
+ \fi
+ \fi
+ \fi
+ \next}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@tl@add}
+% \begin{macro}{\ted@tl@space}
+% Normal characters are just grabbed and added without care, and spaces are
+% gobbled with a special macro which also add a space to the output.
+% \begin{macrocode}
+\newcommand*\ted@tl@add[1]{%
+ \ted@toks\expandafter{\the\ted@toks #1}%
+ \ted@tl@loop}
+% \end{macrocode}
+% \begin{macrocode}
+\@ifdefinable\ted@tl@space{%
+ \expandafter\def\expandafter\ted@tl@space\space{%
+ \ted@tl@add{ }}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@tl@finish}
+% When the end has been reached (either because a \cs{@nil} was encountered or
+% because the line is allmost full), it's time to actually display the result.
+% We add \cs{ETC.} at the end when the full \cs{meaning} isn't displayed.
+% \begin{macrocode}
+\@ifdefinable\ted@tl@finish{%
+ \def\ted@tl@finish#1\@nil{%
+ \ifnum\ted@code<\z@
+ \ted@typeout{\the\ted@toks\string\ETC.)}
+ \else
+ \ted@typeout{\the\ted@toks)}
+ \fi}}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{User macros}
+%
+% \begin{macro}{\ted@typeout}
+% Since we just discussed display, let's see the related user commands. Output
+% is done with
+% \begin{macrocode}
+\newcommand\ted@typeout{%
+ \immediate\write\ted@outfile}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ShowTokensOnline}
+% \begin{macro}{\ShowTokensLogonly}
+% allowing the user to choose between online display, or log output. Default
+% is online.
+% \begin{macrocode}
+\newcommand\ShowTokensOnline{%
+ \let\ted@outfile\@unused}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ShowTokensLogonly{%
+ \let\ted@outfile\m@ne}
+% \end{macrocode}
+% \begin{macrocode}
+\ShowTokensOnline
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ShowTokens}
+% \begin{macro}{\ted@ShowTokens@exp}
+% The user macro for showing tokens is a simple call to the internal macro,
+% just expanding its argument once in its stared form.
+% \begin{macrocode}
+\newcommand\ShowTokens{%
+ \@ifstar{\ted@ShowTokens@exp}{\ted@ShowTokens}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@ShowTokens@exp[1]{%
+ \expandafter\ted@ShowTokens\expandafter{#1}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\Substitute}
+% \begin{macro}{\ted@Subs@star}
+% Now, the user macro for substitution. First, check how many stars there are,
+% if any, and set \cs{ted@subs@cmd} accordingly.
+% \begin{macrocode}
+\newcommand\Substitute{%
+ \@ifstar
+ {\ted@Subs@star}
+ {\let\ted@Subs@cmd\ted@Substitute \ted@Subs}}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@Subs@star{%
+ \@ifstar
+ {\let\ted@Subs@cmd\ted@Subs@exp@iii \ted@Subs}
+ {\let\ted@Subs@cmd\ted@Subs@exp@i \ted@Subs}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@Subs@exp@i}
+% \begin{macro}{\ted@Subs@exp@iii}
+% Here are the intermediate macros that expand either the first or all three
+% arguments before calling \cs{ted@Substitute}.
+% \begin{macrocode}
+\newcommand\ted@Subs@exp@i{%
+ \expandafter\ted@Substitute\expandafter}
+% \end{macrocode}
+% \begin{macrocode}
+\newcommand\ted@Subs@exp@iii[3]{%
+ \begingroup
+ \toks0{\ted@Substitute}%
+ \toks2\expandafter{#1}%
+ \toks4\expandafter{#2}%
+ \toks6\expandafter{#3}%
+ \xdef\ted@Subs@cmd{\the\toks0{\the\toks2}{\the\toks4}{\the\toks6}}%
+ \endgroup
+ \ted@Subs@cmd}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\ted@Subs}
+% Now, the last macro checks and process the optional argument. Here we set
+% \cs{ted@output}, which will be used at the end of \cs{ted@Substitute}.
+% \begin{macrocode}
+\newcommand\ted@Subs[1][\ted@toks]{%
+ \def\ted@output{#1}%
+ \ted@Subs@cmd}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\ted@output}
+% Finally set a default \cs{ted@output} for advanced users who may want
+% to use \cs{ted@Substitute} directly.
+% \begin{macrocode}
+\let\ted@output\ted@toks
+% \end{macrocode}
+% \end{macro}
+%
+% \bigskip
+% \begin{center}\Large
+% That's all folks!\\
+% Happy \TeX ing!
+% \end{center}
+%
+% \Finale
+%
+% \iffalse
+%</package>
+%<*batchfile>
+% \fi
+\typeout{**************************************************}
+\typeout{*}
+\typeout{* To finish the installation you have to move the}
+\typeout{* following file into a directory searched by TeX:}
+\typeout{*}
+\typeout{* \space\space\space\space ted.sty}
+\typeout{*}
+\typeout{* Documentation is in ted.dvi or ted.pdf}
+\typeout{*}
+\typeout{* To produce french documentation, run}
+\typeout{* \space\space \space\space (pdf)latex ted-fr.drv}
+\typeout{*}
+\typeout{* Happy TeXing!}
+\typeout{*}
+\typeout{**************************************************}
+% \iffalse
+%</batchfile>
+% \fi
+\endinput
diff --git a/Master/texmf-dist/tex/latex/ted/ted.sty b/Master/texmf-dist/tex/latex/ted/ted.sty
new file mode 100644
index 00000000000..f86a33ddaf0
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/ted/ted.sty
@@ -0,0 +1,345 @@
+%%
+%% This is file `ted.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% ted.dtx (with options: `package')
+%%
+%% ted package by Manuel P\'egouri\'e-Gonnard <mpg@math.jussieu.fr>
+%% This is a generated file. See ted.dtx for license information.
+%%
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{ted}
+ [2007/12/12 v1.01 \space token list editor \space (mpg)]
+\@ifdefinable\ted@toks{\newtoks\ted@toks}
+\@ifdefinable\ted@list{\let\ted@list\toks@}
+\@ifdefinable\ted@code{\let\ted@code\count@}
+\newcommand\ted@encloop{%
+ \futurelet\@let@token
+ \ted@encloop@}
+\newcommand\ted@encloop@{%
+ \let\next\ted@do@normal
+ \ifx\@let@token\ted@@end
+ \let\next\ted@gobble@end
+ \fi
+ \ifcat\noexpand\@let@token##%
+ \ted@code0
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\@sptoken
+ \ted@code1
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\bgroup
+ \ted@code2
+ \let\next\ted@do@special
+ \fi
+ \ifcat\noexpand\@let@token\egroup
+ \ted@code3
+ \let\next\ted@do@special
+ \fi
+ \next}
+\newcommand\ted@@end{\ted@@end@}
+\@ifdefinable\ted@gobble@end{%
+ \def\ted@gobble@end\ted@@end{}}
+\count@\catcode\z@ \catcode\z@\active
+\newcommand\ted@sanitize{%
+ \count@\z@ \@whilenum\count@<\@cclvi \do{%
+ \uccode\z@\count@
+ \uppercase{\let^^00\ted@@active}%
+ \advance\count@\@ne}}
+\catcode\z@\count@
+\newcommand\ted@@active{\ted@@active@}
+\newcommand\ted@encode[1]{%
+ \ted@list{}%
+ \let\ted@do@normal\ted@gobble@encloop
+ \let\ted@do@special\ted@scan@special
+ \ted@encloop#1\ted@@end
+ \ted@toks{}%
+ \let\ted@do@normal\ted@addtoks@encloop
+ \let\ted@do@special\ted@special@out
+ \ted@encloop#1\ted@@end
+ \ted@assert@listempty}
+\newcommand\ted@assert@listempty{%
+ \edef\next{\the\ted@list}%
+ \ifx\next\@empty \else
+ \PackageError{ted}{%
+ Assertion `\string\ted@list\space is empty' failed}{%
+ This should not happen. Please report this bug to the author.
+ \MessageBreak By the way, you're in trouble there... I'm sorry.}%
+ \fi}
+\newcommand\ted@gobble@encloop{%
+ \afterassignment\ted@encloop
+ \let\@let@token= }
+\count@\catcode\z@ \catcode\z@ 12
+\newcommand\ted@scan@special{%
+ \begingroup
+ \escapechar\if\@let@token^^00 \@ne \else \z@ \fi
+ \expandafter\ted@check@space\string}
+\catcode\z@\count@
+\newcommand\ted@check@space{%
+ \futurelet\@let@token
+ \ted@check@space@}
+\newcommand\ted@check@space@{%
+ \ifcat\@let@token\@sptoken
+ \endgroup
+ \ted@addlist{32}%
+ \expandafter\ted@gobble@encloop
+ \else
+ \expandafter\ted@list@special
+ \fi}
+\newcommand*\ted@list@special[1]{%
+ \ted@code`#1\relax
+ \expandafter\expandafter\expandafter
+ \endgroup
+ \ifnum\ted@code=\escapechar
+ \ted@addlist{\m@ne}%
+ \else
+ \expandafter\ted@addlist\expandafter{\the\ted@code}%
+ \fi
+ \ted@encloop}
+\newcommand*\ted@addlist[1]{%
+ \ted@list\expandafter{\the\ted@list#1 }}
+\newcommand\ted@addtoks@encloop[1]{%
+ \ted@toks\expandafter{\the\ted@toks#1}%
+ \ted@encloop}
+\newcommand\ted@special@out{%
+ \ifnum\ted@list@read=\m@ne
+ \ted@list@advance
+ \expandafter\ted@cs@clean
+ \else
+ \expandafter\ted@special@encode
+ \fi}
+\newcommand\ted@cs@clean[1]{%
+ \expandafter\ted@add@toks{#1}%
+ \expandafter\ted@cscl@loop\string#1 \@nil}
+\@ifdefinable\ted@cscl@loop{%
+ \def\ted@cscl@loop#1 {%
+ \futurelet\@let@token
+ \ted@cscl@loop@}}
+\newcommand\ted@cscl@loop@{%
+ \ifx\@let@token\@nil
+ \expandafter\ted@gobble@encloop
+ \else
+ \ted@list@advance
+ \expandafter\ted@cscl@loop
+ \fi}
+\newcommand\ted@special@encode{%
+ \afterassignment\ted@special@encode@
+ \let\@let@token= }
+\newcommand\ted@special@encode@{%
+ \expandafter\ted@special@encode@@\expandafter{%
+ \csname ted@@\the\ted@code\ted@list@read\endcsname}}
+\newcommand*\ted@special@encode@@[1]{%
+ \ted@list@advance
+ \let#1\ted@@special
+ \ted@addtoks@encloop{#1}}
+\newcommand\ted@@special{\ted@@special@}
+\newcommand\ted@list@read{%
+ \expandafter\ted@list@read@\the\ted@list\@nil}
+\@ifdefinable\ted@list@read@{%
+ \def\ted@list@read@#1 #2\@nil{%
+ #1}}
+\newcommand\ted@list@advance{%
+ \expandafter\ted@list@advance@\the\ted@list\@nil}
+\@ifdefinable\ted@list@advance@{
+ \def\ted@list@advance@#1 #2\@nil{%
+ \ted@list{#2}}}
+\newcommand\ted@add@toks[1]{%
+ \ted@toks\expandafter{\the\ted@toks#1}}
+\newcommand\ted@decode[1]{%
+ \ifx#1\ted@@end \expandafter\@gobble\else\expandafter\@firstofone\fi{%
+ \ifx#1\ted@@special
+ \expandafter\@firstoftwo
+ \else
+ \expandafter\@secondoftwo
+ \fi{%
+ \begingroup \escapechar\m@ne \expandafter\endgroup
+ \expandafter\ted@decode@special\string#1\@nil
+ }{%
+ \ted@add@toks{#1}}%
+ \ted@decode}}
+\@ifdefinable\ted@decode@special{%
+ \begingroup\escapechar\m@ne \expandafter\endgroup\expandafter
+ \def\expandafter\ted@decode@special\string\ted@@#1#2\@nil{%
+ \ifcase#1
+ \begingroup \uccode`##=#2 \uppercase{\endgroup
+ \ted@add@toks{##}}%
+ \or
+ \begingroup \uccode32=#2 \uppercase{\endgroup
+ \ted@add@toks{ }}%
+ \or
+ \begingroup \ted@toks{}%
+ \uccode`{=#2
+ \or
+ \uccode`}=#2
+ \uppercase{\ted@toks\expandafter{\expandafter{\the\ted@toks}}}
+ \expandafter\endgroup
+ \expandafter\ted@add@toks\expandafter{\the\ted@toks}%
+ \fi}}
+\newcommand\ted@Substitute[3]{%
+ \begingroup \ted@sanitize
+ \ted@encode{#3}%
+ \expandafter\ted@def@subsmac\expandafter{\the\ted@toks}{#2}%
+ \ted@encode{#1}%
+ \ted@subsmac
+ \ted@toks\expandafter{\expandafter}%
+ \expandafter\ted@decode\the\ted@toks\ted@@end
+ \expandafter\endgroup
+ \expandafter\ted@output\expandafter{\the\ted@toks}}
+\newcommand\ted@def@subsmac[2]{%
+ \ted@encode{#2}%
+ \long\expandafter\def\expandafter\ted@subsmac@loop
+ \expandafter##\expandafter1\the\ted@toks##2{%
+ \ted@add@toks{##1}%
+ \ifx##2\ted@@end
+ \expandafter\@gobble
+ \else
+ \expandafter\@firstofone
+ \fi{%
+ \ted@add@toks{#1}\ted@subsmac@loop##2}}%
+ \expandafter\ted@def@subsmac@\expandafter{\the\ted@toks}}
+\newcommand\ted@def@subsmac@[1]{%
+ \def\ted@subsmac{%
+ \ted@toks\expandafter{\expandafter}%
+ \expandafter\ted@subsmac@loop\the\ted@toks#1\ted@@end}}
+\newcommand\ted@ShowTokens[1]{%
+ \begingroup \ted@sanitize
+ \ted@toks{#1}%
+ \ted@typeout{--- Begin token decompositon of:}%
+ \ted@typeout{\@spaces \the\ted@toks}%
+ \ted@encode{#1}%
+ \expandafter\ted@show@toks\the\ted@toks\ted@@end
+ \endgroup
+ \ted@typeout{--- End token decomposition.}}
+\count@\catcode\z@ \catcode\z@ 12
+\newcommand\ted@show@toks[1]{%
+ \ifx#1\ted@@end \expandafter\@gobble\else\expandafter\@firstofone\fi{%
+ \ted@toks{#1}%
+ \begingroup
+ \escapechar\if\noexpand#1^^00 \@ne \else \z@ \fi
+ \expandafter\ted@show@toks@\string#1\@nil
+ \ted@show@toks}}
+\catcode\z@\count@
+\@ifdefinable\ted@show@toks@{%
+ \long\def\ted@show@toks@#1#2\@nil{%
+ \expandafter\endgroup
+ \ifnum`#1=\escapechar
+ \expandafter\ifx\the\ted@toks\ted@@special
+ \ted@show@special#2\@nil
+ \else
+ \aftergroup\ted@type@cs
+ \expandafter\aftergroup\the\ted@toks
+ \fi
+ \else \expandafter
+ \ifx\the\ted@toks\ted@@active
+ \aftergroup\ted@type@active
+ \expandafter\aftergroup\the\ted@toks
+ \else
+ \aftergroup\ted@type@normal
+ \expandafter\aftergroup\the\ted@toks
+ \fi
+ \fi}}
+\@ifdefinable\ted@show@special{%
+ \begingroup\escapechar\m@ne \expandafter\endgroup
+ \expandafter\def\expandafter\ted@show@special\string\ted@@#1#2\@nil{%
+ \ifcase#1
+ \aftergroup\ted@type@hash
+ \or
+ \aftergroup\ted@type@blank
+ \or
+ \aftergroup\ted@type@bgroup
+ \or
+ \aftergroup\ted@type@egroup
+ \fi
+ \begingroup \uccode`1#2
+ \uppercase{\endgroup\aftergroup1}}}
+\newcommand\ted@type@hash[1]{%
+ \ted@typeout{#1 (macro paramater character #1)}}
+\newcommand\ted@type@blank[1]{%
+ \ted@typeout{#1 (blank space #1)}}
+\newcommand\ted@type@bgroup[1]{%
+ \ted@typeout{#1 (begin-group character #1)}}
+\newcommand\ted@type@egroup[1]{%
+ \ted@typeout{#1 (end-group character #1)}}
+\newcommand\ted@type@normal[1]{%
+ \ted@typeout{#1 (\meaning#1)}}
+\newcommand\ted@type@cs[1]{%
+ \ted@type@long{\string#1 (control sequence=\meaning#1}}%
+\newcommand\ted@type@active[1]{%
+ \ted@type@long{\string#1 (active character=\meaning#1}}%
+\newcommand\ted@type@long[1]{%
+ \ted@toks{}%
+ \ted@code72
+ \edef\next{#1}%
+ \expandafter\ted@tl@loop\next\@nil}
+\newcommand\ted@tl@loop{%
+ \futurelet\@let@token
+ \ted@tl@loop@}
+\newcommand\ted@tl@loop@{%
+ \ifx\@let@token\@nil
+ \let\next\ted@tl@finish
+ \else
+ \advance\ted@code\m@ne
+ \ifnum\ted@code<\z@
+ \let\next\ted@tl@finish
+ \else
+ \ifx\@let@token\@sptoken
+ \let\next\ted@tl@space
+ \else
+ \let\next\ted@tl@add
+ \fi
+ \fi
+ \fi
+ \next}
+\newcommand*\ted@tl@add[1]{%
+ \ted@toks\expandafter{\the\ted@toks #1}%
+ \ted@tl@loop}
+\@ifdefinable\ted@tl@space{%
+ \expandafter\def\expandafter\ted@tl@space\space{%
+ \ted@tl@add{ }}}
+\@ifdefinable\ted@tl@finish{%
+ \def\ted@tl@finish#1\@nil{%
+ \ifnum\ted@code<\z@
+ \ted@typeout{\the\ted@toks\string\ETC.)}
+ \else
+ \ted@typeout{\the\ted@toks)}
+ \fi}}
+\newcommand\ted@typeout{%
+ \immediate\write\ted@outfile}
+\newcommand\ShowTokensOnline{%
+ \let\ted@outfile\@unused}
+\newcommand\ShowTokensLogonly{%
+ \let\ted@outfile\m@ne}
+\ShowTokensOnline
+\newcommand\ShowTokens{%
+ \@ifstar{\ted@ShowTokens@exp}{\ted@ShowTokens}}
+\newcommand\ted@ShowTokens@exp[1]{%
+ \expandafter\ted@ShowTokens\expandafter{#1}}
+\newcommand\Substitute{%
+ \@ifstar
+ {\ted@Subs@star}
+ {\let\ted@Subs@cmd\ted@Substitute \ted@Subs}}
+\newcommand\ted@Subs@star{%
+ \@ifstar
+ {\let\ted@Subs@cmd\ted@Subs@exp@iii \ted@Subs}
+ {\let\ted@Subs@cmd\ted@Subs@exp@i \ted@Subs}}
+\newcommand\ted@Subs@exp@i{%
+ \expandafter\ted@Substitute\expandafter}
+\newcommand\ted@Subs@exp@iii[3]{%
+ \begingroup
+ \toks0{\ted@Substitute}%
+ \toks2\expandafter{#1}%
+ \toks4\expandafter{#2}%
+ \toks6\expandafter{#3}%
+ \xdef\ted@Subs@cmd{\the\toks0{\the\toks2}{\the\toks4}{\the\toks6}}%
+ \endgroup
+ \ted@Subs@cmd}
+\newcommand\ted@Subs[1][\ted@toks]{%
+ \def\ted@output{#1}%
+ \ted@Subs@cmd}
+\let\ted@output\ted@toks
+\endinput
+%%
+%% End of file `ted.sty'.
diff --git a/Master/tlpkg/bin/tlpkg-ctan-check b/Master/tlpkg/bin/tlpkg-ctan-check
index 31c67219163..2ddab1d152d 100755
--- a/Master/tlpkg/bin/tlpkg-ctan-check
+++ b/Master/tlpkg/bin/tlpkg-ctan-check
@@ -157,7 +157,7 @@ my @WorkingTLP = qw(
supertabular Susy svgcolor svn svn-multi svninfo
swebib syntax synproof syntrace synttree
t-angles Tabbing tableaux tabulary tabvar talk tamethebeast
- templates-fenn templates-sommer tengwarscript
+ ted templates-fenn templates-sommer tengwarscript
tensor teubner tex-gyre texilikecover texmate
texpower texshade
textcase textfit textopo textpath textpos thesis-titlepage-fhac
diff --git a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
index ad16031ef74..f9b4a922117 100644
--- a/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
+++ b/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
@@ -479,6 +479,7 @@ depend talk
depend taupin
depend tcldoc
depend technics
+depend ted
depend texilikecover
depend texlogos
depend texmate
diff --git a/Master/tlpkg/tlpsrc/ted.tlpsrc b/Master/tlpkg/tlpsrc/ted.tlpsrc
new file mode 100644
index 00000000000..bc4fe177ccb
--- /dev/null
+++ b/Master/tlpkg/tlpsrc/ted.tlpsrc
@@ -0,0 +1,2 @@
+name ted
+category Package