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\preamble
  ------------------------------------------------------------------
  The gloss-occitan module for polyglossia
  Copyright (C) 2016 Cédric Valmary
  All rights reserved
  
  Licence information appended

  Created by Cédric Valmary: cvalmary at yahoo dot fr 
  of Tot en òc <http://www.totenoc.eu/>

\endpreamble
\postamble
Distributable under the LaTeX Project Public License,
version 1.3c or higher (your choice). The latest version of
this license is at: http://www.latex-project.org/lppl.txt

This work is "author-maintained"
The maintainer is Cédric Valmary

\endpostamble

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\generate{\file{gloss-occitan.ldf}{\from{gloss-occitan.dtx}{ldf}}}

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%<*driver>
\documentclass{ltxdoc}
\ProvidesFile{gloss-occitan.dtx}[2016/02/04 v.0.1 Documented Occitan module for polyglossia]
\usepackage[utf8]{inputenc}
\usepackage[LGR,T1]{fontenc}
\usepackage{lmodern}
\GetFileInfo{gloss-occitan.dtx} 
\title{The Occitan language module for polyglossia}
\date{\fileversion\space--- \filedate}
\author{Cédric Valmary --- \texttt{cvalmary at yahoo dot fr}}
\usepackage{metalogo,multicol,array,booktabs,graphicx}
\def\prog#1{\textsf{#1}}
\def\pack#1{\textsf{\slshape#1}}
\begin{document}\errorcontextlines=9
\maketitle
\begin{multicols}{2}
\tableofcontents
\end{multicols}
\setlength\hfuzz{20pt}
\DocInput{gloss-occitan.dtx}
\end{document}
%</driver>
%\fi
%
% \CheckSum{237}
%
%    \begin{abstract}
%     This file describes the Occitan language module for \pack{polyglossia}.
%     It describes also the options that may be specified and their 
%     functionalities.
%    \end{abstract}
%
%    \section{Usage}
%    When selecting the Occitan language with \pack{polyglossia} you have
%    to use either
%    \begin{flushleft}
%    \cs{setmainlanguage}\texttt{[babelshorthands]\{occitan\}}\\
%    or\\
%    \cs{setotherlanguage}\texttt{[babelshorthands]\{occitan\}}
%    \end{flushleft}
%    depending on the fact that Occitan is the main or a secondary document
%    language. The option |babelshorhands| is, in facts, optional; if
%    specified it defines the active double quote functionalities.
%    See table~\ref{tab:activedq}.
%    \begin{table}\centering
%    \begin{tabular}{>{\ttfamily}lp{0.7\textwidth}}
%    \toprule
%    |"|	& Followed by a single letter token inserts a compound 
%          word mark with the necessary discretionary break command and
%          allows hyphenation of both strings that precede and follow
%          this mark.\tabularnewline
%    \string"\string| & Behaves as |"| when the vertical bar is followed
%          by a complex token (a control sequence) or anything different
%          from a letter. \tabularnewline
%    |"<|	& Inserts open guillemets and eliminates space 
%          after «\tabularnewline
%    |">|	& Inserts closed guillemets and eliminates space 
%          before »\tabularnewline
%    |"/|	& Inserts a slash that allows hyphenation of both the preceding
%          and the following word.\tabularnewline
%    |".|	& Inserts a centerd dot (\emph{ponch interior}) with 
%          a discretionary break that allows hyphenation of both word 
%          fragments.\tabularnewline
%    \bottomrule
%    \end{tabular}
%    \caption{Occitan module shorthands}
%    \label{tab:activedq}
%    \end{table}
%A few words are in order.
%\begin{itemize}
%\item[|"|] This compound work marker is very useful. The hyphenation 
%    patterns developed for the Occitan language have been modelled on the 
%    French or Spanish ones especially for what concerns the separation 
%    between an `s' followed by another consonant. Nevertheless the 
%    \emph{Conselh de la lenga occitana} takes care of a common spelling 
%    for all the Occitan varieties, but leaves every speaker free to pronounce the 
%    way s/he likes best according to his/her dialect. Even if local 
%    pronunciations are allowed, the spelling varies a little between the 
%    Occitan varieties Auvernhat, Gascon, Lemosin, Lengadocian, Niçard, 
%    Provençal, and Vivaroalpenc. May be some particular spelling requires 
%    some manual intervention for a correct hyphenation. The hyphenation 
%    patterns have been developed taking into account some peculiarities 
%    of the Gascon and the Vivaroalpenc varieties, but better patterns 
%    will be created as long as suggestions/corrections arrive 
%    from the community of \LaTeX\ users.
%
%\item[\texttt{\string"\string|}] This shorthand should be useless 
%    within a \texttt{.tex} source file to be processed by UTF-8 
%    aware engines as \XeLaTeX\ and \LuaLaTeX. Nevertheless it might be 
%    necessary to insert a discretionary break in a strange word that 
%    requires a real macro within it; in this case the \verb+"|+ shorthand 
%    comes handy. The situation is different with 8-bit aware typesetting 
%    engines, because the \texttt{utf8} specified to the \pack{inputenc} 
%    package changes every non-\textsc{ascii} character into a LICR (LaTeX 
%    Internal Character Representation) which is substantially a macro; 
%    as such it is not recognised as a character by |"|, and this second 
%    compound word marker must be used.
%
%\item[|"<|] and |">| are used to set the guillemets with the proper 
%    spacing; French users generally leave in the source |.tex| file at
%    least one space after the open ones and another space before the
%    closed ones. This is supposed to be a bad practice  for what concerns
%    Occitan typesetting, therefore such commands take care of eliminating
%    these unwanted spaces, while simplifying the keying.
%    
%\item[|".|] This is a very special shorthand; it is intended to distinguish,
%    for example, `sh' from `s$\cdot$h' (and similarly for other such groups). 
%    For example \emph{dis$\cdot$har} is pronounced with a minimal pause 
%    between the sound of `s' and the aspired sound of `h'; without the centered 
%    dot (\emph{ponch interior}) the `sh' is a digraph that is pronounced as 
%    the IPA phoneme /\scalebox{0.8}{$\int$}/. When \emph{dis$\cdot$har}
%    (|dis".har| in the source file) gets hyphenated, it becomes
%    \mbox{\itshape dis-har}.
%\end{itemize}
%
% This ends the few peculiarities of the |gloss-occitan| language description file.
%
%^^A    \section*{Acknowledgements}
%^^A    When this file originated was very basic; Claudio Beccari added the
%^^A    double quote active features after the hyphenation patterns
%^^A    became available.
%
% \StopEventually{}
%
%    \section{Documented code}
%\iffalse
%<*ldf>
%\fi
%\subsection{Initial settings}
% First we have to identify this file, and we start with the initial code
% written by Cédric Valmary.
%    \begin{macrocode}
%************************************************* By Cédric Valmary
\ProvidesFile{gloss-occitan.ldf}[2016/02/04 v0.3 polyglossia: 
     module for Occitan]
%    \end{macrocode}
% Then we have ti set up \pack{polyglossia} in order to let the package 
% know what language is is handling; what is the name of the hyphenation
% pattern set; what are the minimum word fragment lengths of the first 
% and respectively the last word fragment before or after a line break; the
% specific setting for punctuation spacing, the indentation of the first 
%paragraph of a section; if \pack{polyglossia} should use a special font
% family |\occitanfont| in case the user defined such a family.
%    \begin{macrocode}
\PolyglossiaSetup{occitan}{
  hyphennames={occitan},
  hyphenmins={2,2},
  frenchspacing=true,
  indentfirst=true,
  fontsetup=true,
}
%************************************************
%    \end{macrocode}
%
% \subsection{Option definitions}
% We now document the contributed extension required to create the optional 
% functionality obtained from the double quote active character.
%
% We set up the necessary machinery for the module option
% |babelshorthands|. we set it as a boolean key thet does not require
% the explicit value |true| when it is specified to the module.
% The option must be tied to the Occitan language, so we also 
% define its prefix |occitan@|. We simultaneously use the switch
% |\ifsystem@baabelshorthands| in order to set the boolean key to |true|
% or |false|.
%    \begin{macrocode}
\define@boolkey{occitan}[occitan@]{babelshorthands}[true]{}

\ifsystem@babelshorthands
  \setkeys{occitan}{babelshorthands=true}
\else
  \setkeys{occitan}{babelshorthands=false}
\fi
%    \end{macrocode}
%
% At this point, in order to use the \pack{babel} machinery to define
% active characters, we test it if it was already loaded by testing
% the definiteness of a specific macro. If the module |babelsh.def|
% was not loaded, we load it, then start preparing the ground to
% define the double quote |"| as an active character.
%....\begin{macrocode}
\ifcsundef{initiate@active@char}{%
\input{babelsh.def}%
\initiate@active@char{"}%
}{}
%    \end{macrocode}
%
% Now we are ready to assign a definition to the double quote |"| active
% character. The |"| active char is supposed to
% do a certain small collection of actions, different in math mode
% compared to text mode; therefore we define a service macro |\xpgoc@next| with a
% different meaning depending on the typesetting mode. Notice that in
% text mode the definition assigns to a token the meaning of the token
% that upon expansion of the macro follows directly |\xpgoc@cwm|.
% The assignment with |\futurelet| is executed before |\xpgoc@cwm|
% therefore it can pick up also the first space token that possibly
% follows the expansion of |"|; a macro would ignore such space.
%    \begin{macrocode}
\def\occitan@shorthands{%
  \bbl@activate{"}%
  \def\language@group{occitan}%
  \declare@shorthand{occitan}{"}{%
    \relax\ifmmode
      \def\xpgoc@next{''}%
    \else
      \def\xpgoc@next{\futurelet\xpgoc@temp\xpgoc@cwm}%
    \fi
  \xpgoc@next}%
}
%    \end{macrocode}
%
% \subsection{The double quote active character}
%
% We now define a couple of service macros; |\xpgoc@@cwm| expands to
% an absolute |nobreak| macro that forbids any line break; then a
% normal discretionary (the long definition with three arguments,
% is made through a primitive command, but if we used the standard
% |\-| control character, we would get the same performance); finally
% we put another |\nobreak| command and a zero width glob of glue;
% this zero-width, zero-stretch, zero-shrink glob of glue does not
% interfere with typesetting but is the actual trick that lets the
% typesetting engine understand that the incoming string of letters
% has to be treated as a word, so that the hyphenation algorithm
% continues working after the discretionary break.
% 
% Similarly the macro |\xpgoc@ponchinterior| works in the same way,
% but the discretionary break contains a non empty third argument
% that contains a box which in turn contains the centered dot.
%    \begin{macrocode}
\def\xpgoc@@cwm{\nobreak\discretionary{-}{}{}\nobreak\hskip\z@skip}
\def\xpgoc@ponchinterior{%
      \nobreak\discretionary{-}{}{\mbox{$\cdot$}}\nobreak\hskip\z@skip}
%    \end{macrocode}
%
% Eventually we can make a chain of conditional statements that check
% what the |\xpgoc@temp| let token actually represents. We define
% another service macro |\xpgoc@@next| macro with different definitions
% depending on the status of the various tests. We first let it to a
% |\relax| no-op, in case that none of the tests is true; eventually
% we use its expansion that will do different actions depending on the
% tests. Notice that all the used conditionals expand their arguments;
% therefore it is necessary to use |\noexpand| in order to maintain the
% integrity of the tokens to be compared. Notice also that the service
% macro is sometimes defined as an argument-less macro, and sometimes
% as a macro with one compulsory argument; in this latter case, since
% we are making definitions within another definition we have to double
% the hash sign. In the latter case it will ignore any spaces following
% it and get the first non blank token; in most cases it will gobble the
% first non blank token and discard it.
%    \begin{macrocode}
\def\xpgoc@cwm{\let\xpgoc@@next\relax
  \ifcat\noexpand\xpgoc@temp a%
                         \def\xpgoc@@next{\xpgoc@@cwm}%
  \else
    \if\noexpand\xpgoc@temp \string|%
      \def\xpgoc@@next##1{\xpgoc@@cwm}%
    \else
      \if\noexpand\xpgoc@temp \string<%
        \def\xpgoc@@next##1{«\ignorespaces}%
      \else
        \if\noexpand\xpgoc@temp \string>%
          \def\xpgoc@@next##1{\unskip»}%
        \else
          \if\noexpand\xpgoc@temp\string/%
            \def\xpgoc@@next##1{\slash}%
          \else
            \if\noexpand\xpgoc@temp\string.%
              \def\xpgoc@@next##1{\xpgoc@ponchinterior}%
            \fi
          \fi
        \fi
      \fi
    \fi
  \fi
  \xpgoc@@next}
%    \end{macrocode}
%
% Before going on we have to define what to delete when leaving the Occitan
% typesetting, so that another language may start working without any
% residue of the Occitan settings. In particular the double quote |"| active
% char must be deactivated.
%    \begin{macrocode}
\def\nooccitan@shorthands{%
  \@ifundefined{initiate@active@char}{}{\bbl@deactivate{"}}%
}
%    \end{macrocode}
%
% \subsection{Occitan infix words}
% We can resume the original code for defining the infix Occitan
% words and to typeset the date.
%    \begin{macrocode}
%*********************************************** By Cédric Valmary
\def\captionsoccitan{%
   \def\refname{Referéncias}%
   \def\abstractname{Resumit}%
   \def\bibname{Bibliografia}%
   \def\prefacename{Prefaci}%
   \def\chaptername{Capítol}%
   \def\appendixname{Annèx}%
   \def\contentsname{Ensenhador}%
   \def\listfigurename{Taula de las figuras}%
   \def\listtablename{Taula dels tablèus}%
   \def\indexname{Indèx}%
   \def\figurename{Figura}%
   \def\tablename{Tablèu}%
   %\def\thepart{}%
   \def\partname{Partida}%
   \def\pagename{Pagina}%
   \def\seename{vejatz}%
   \def\alsoname{vejatz tanben}%
   \def\enclname{Pèça junta}%
   \def\ccname{còpia a}%
   \def\headtoname{A}%
   \def\proofname{Demostracion}%
   \def\glossaryname{Glossari}%
}
\def\dateoccitan{%
   \def\occitanmonth{\ifcase\month\or
      de~genièr\or
      de~febrièr\or
      de~març\or
      d'abril\or
      de~mai\or
      de~junh\or
      de~julhet\or
      d'agost\or
      de~setembre\or
      d'octobre\or
      de~novembre\or
      de~decembre\fi
   }%
   \def\occitanday{\ifcase\day\or
      1èr\else% primièr
      \number\day\fi% all other numbers
   }%
   \def\today{\occitanday\space \occitanmonth\space de~\number\year}%
}
%*************************************************
%    \end{macrocode}
%
% \subsection{Final clean-up}
% \pack{polyglossia} requires that  at |\begin{document}| time certain
% values are saved. Actually this is a prudential action: the user might
% have changed the normal values, so before setting the values valid
% for Occitan typesetting, its better to save the general values.
% The actual values that require saving are the club and widow penalties,
% together with the final demerits; the latter ones are the demerits in
% hyphenating the penultimate line of a paragraph so as not to terminate
% with a last line composed with a single syllable. The internal value
% |\@clubpenalty| must be saved, because sometimes it does not equal
% that of |\clubpenalty|
%    \begin{macrocode}
\let\xpgoc@savedvalues\empty
\AtEndPreamble{% the user or the class might define different values
  \edef\xpgoc@savedvalues{%
    \clubpenalty=\the\clubpenalty\space
    \@clubpenalty=\the\@clubpenalty\space
    \widowpenalty=\the\widowpenalty\space
    \finalhyphendemerits=\the\finalhyphendemerits}
}
%    \end{macrocode}
%
% Eventually we define the definitive |\noextras@occitan| macro to
% undo everything that was done for setting up the typesetting of
% the Occitan language.
%    \begin{macrocode}
\def\noextras@occitan{%
   \lccode\string"2019=\z@
   \nooccitan@shorthands
   \xpgoc@savedvalues
}
%    \end{macrocode}
%
% For setting up Occitan typesetting \pack{polyglossia} requires two different
% settings: the general ones and the specific settings for typesetting in line.
%    \begin{macrocode}
\def\blockextras@occitan{%
   \lccode\string"2019=\string"2019
   \clubpenalty=3000 \@clubpenalty=3000 \widowpenalty=3000
   \finalhyphendemerits=50000000
   \ifoccitan@babelshorthands\occitan@shorthands\fi
}

\def\inlineextras@occitan{%
   \lccode\string"2019=\string"2019
   \ifoccitan@babelshorthands\occitan@shorthands\fi
}
%    \end{macrocode}
%
% This ends the documentation of the Occitan language module for
% \pack{polyglossia}.
%\iffalse
%</ldf>
%\fi
%
% \Finale
% \endinput
%