% \iffalse meta-comment
% An Infrastructure for Semantic Macros and Module Scoping
% Copyright (C) 2004-2006 Michael Kohlhase, all rights reserved
%               this file is released under the
%               LaTeX Project Public License (LPPL)
%
% The development version of this file can be found at
% https://svn.kwarc.info/repos/kwarc/projects/stex/sty/modules.dtx
% \fi
%  
% \iffalse
%<package>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
%<package>\ProvidesPackage{modules}[2006/01/13 v0.9a Semantic Markup]
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{url,array,modules,float}
\usepackage[show]{ed}
\usepackage{hyperref}
\makeindex
\floatstyle{boxed}
\newfloat{exfig}{thp}{lop}
\floatname{exfig}{Example}
\begin{document}\DocInput{modules.dtx}\end{document}
%</driver>
% \fi
% 
% \CheckSum{539}
%
% \changes{v0.9}{2005/06/14}{First Version with Documentation}
% \changes{v0.9a}{2005/07/01}{Completed Documentation}
% \changes{v0.9b}{2005/08/06}{Complete functionality and Updated Documentation}
% \changes{v0.9c}{2006/01/13}{more packaging}
% \changes{v0.9d}{2007/12/12}{fixing double loading of .tex and .sms}
% 
% \GetFileInfo{modules.sty}
% 
% \MakeShortVerb{\|}
%\def\scsys#1{{{\sc #1}}\index{#1@{\sc #1}}}
% \def\stex{{\raisebox{-.5ex}S\kern-.5ex\TeX}}
% \def\sTeX{\stex}
% \def\xml{\scsys{Xml}}
% \def\mathml{\scsys{MathML}}
% \def\omdoc{\scsys{OMDoc}}
% \def\openmath{\scsys{OpenMath}}
% \def\latexml{\scsys{LaTeXML}}
% \def\perl{\scsys{Perl}}
% \def\cmathml{Content-{\sc MathML}\index{Content {\sc MathML}}\index{MathML@{\sc MathML}!content}}
% \def\activemath{\scsys{ActiveMath}}
% \def\twin#1#2{\index{#1!#2}\index{#2!#1}}
% \def\twintoo#1#2{{#1 #2}\twin{#1}{#2}}
% \def\atwin#1#2#3{\index{#1!#2!#3}\index{#3!#2 (#1)}}
% \def\atwintoo#1#2#3{{#1 #2 #3}\atwin{#1}{#2}{#3}}
% \title{Semantic Macros and Module Scoping   in {\stex}\thanks{Version {\fileversion} (last revised
%        {\filedate})}}
%    \author{Michael Kohlhase \& Rares Ambrus\\
%            Jacobs University, Bremen\\
%            \url{http://kwarc.info/kohlhase}}
% \maketitle
%
% \begin{abstract}
%   The |modules| packge is a central part of the {\stex} collection, a version of
%   {\TeX/\LaTeX} that allows to markup {\TeX/\LaTeX} documents semantically without
%   leaving the document format, essentially turning {\TeX/\LaTeX} into a document format
%   for mathematical knowledge management (MKM).
%
%   This package supplies a definition mechanism for semantic macros and a non-standard
%   scoping construct for them, which is oriented at the semantic depency relation rather
%   than the document structure. This structure can be used by MKM systems for
%   added-value services, either directly from the {\sTeX} sources, or after translation.
% \end{abstract}
%\newpage
% \section{Introduction}\label{sec:intro}
% 
% Following general practice in the {\TeX/\LaTeX} community, we use the term ``semantic
% macro'' for a macro whose expansion stands for a mathematical object, and whose name
% takes up the name of the mathematical object. This can range from simple definitions
% like |\def\Reals{{\mathbb R}}| for indivicual mathematical objects to more complex
% (functional) ones object constructors like
% |\def\SmoothFunctionsOn#1{{\cal{C}}^\infty(#1)}|. Semantic macros are traditionally used
% to make {\TeX/\LaTeX} code more portable. However, the {\TeX/\LaTeX} scoping model
% (macro definitions are scoped either in the local group or until the rest of the
% document), does not mirror mathematical practice, where notations are scoped by
% mathematical environments like statements, theories, or such.
%
% \section{The User Interface}
%
% The main contributions of the |modules| package are the |module| environment, which
% allows for lexical scoping of semantic macros with inheritance and the |\symdef| macro
% for declaration of semantic macros that underly the |module| scoping.
%
% \subsection{Modules}\label{sec:modules}
%
% \DescribeEnv{module} The |module| environment takes an optional |KeyVal|
% argument. Currently, only the |id| key is supported for specifying the identifier of a
% module (also called the {\twintoo{module}{name}}).
%
% \DescribeMacro{\importmodule} A module introduced by |\begin{module}[id=foo]| restricts
%   the scope the semantic macros defined by the |\symdef| form to the end of this module
%   given by the corresponding |\end{module}|, and to any other |module| environments that
% import them by a |\importmodule{foo}| directive. If the module |foo| contains
% |\importmodule| directives of its own, these are also exported to the importing
% module. Thus |\importmodule| induces the {\atwintoo{semantic}{inheritance}{relation}}
% and |usesqualified|\ednote{do an importqualified as well} for macros imported with a
% prefix (this is used whenever we have conflicting names for macros inherited from
% different modules).
%
% \subsection{Semantic Macros}\label{sec:symdef}
%
% \DescribeMacro{\symdef}A call to the |\symdef| macro has the general form
% \begin{quote}
% |\symdef[|\meta{keys}|]{|\meta{cseq}|}[|\meta{args}|]{|\meta{definiens}|}|
% \end{quote}
% where {\meta{cseq}} is a control sequence (the name of the semantic macro) {\meta{args}}
% is a number between 0 and 9 for the number of arguments {\meta{definiens}} is the token
% sequence used in macro expansion for {\meta{cseq}}. Finally {\meta{keys}} is a keyword
% list that further specifies the semantic status of the defined macro.
%
% A key |local| can be added to {\meta{keys}} to specify that the symbol is local to the
% module and is invisible outside. The key-value pair |aliases=|\meta{symname} specifies
% that the defined symbol {\meta{cseq}} is a presentational variant of the symbol
% {\meta{symname}}.
% 
% Finallly, the keys |cmml|, |cattrs|, and |definitionURL| can be used to specify the
% {\cmathml} encoding of the symbols. They key-value pair |cmml=|\meta{elt} specifies that
% the semantic macro corresponds to the {\cmathml} element with the name \meta{elt},
% |cattrs=|\meta{attrtring} its argument string and |definitionURL| allows to specify the
% |definitionURL| attribute on that element. The most common case will be a symbol
% definition of the following form:
%
% \begin{quote}
% |\symdef[cmml=csymbol,definitionURL=|\meta{URI}|]{|\meta{cseq}|}[|\meta{args}|]{|\meta{definiens}|}|
% \end{quote}
%
% where \meta{URI} is the URI pointing to the location of the {\xml} file generated from
% the current {\LaTeX} file. 
%
% \DescribeMacro{\abbrdef}The |\abbrdef| macro is a variant of |\symdef| that is only
% different in semantics, not in presentation. An abbreviative macro is like a semantic
% macro, and underlies the same scoping and inheritance rules, but it is just an
% abbreviation that is meant to be expanded, it does not stand for an atomic mathematical
% object.
%
% We will use a simple module for natural number arithmetics as a running example. It
% defines exponentiation and summation as new concepts while drawing on the basic
% operations like $+$ and $-$ from {\LaTeX}. In our example, we will define a semantic
% macro for summation |\Sumfromto|, which will allow us to express an expression like
% $\sum{i=1}^nx^i$ as |\Sumfromto{i}1n{2i-1}| (see Example~\ref{fig:semmodule} for an
% example). In this example we have also made use of a local semantic symbol for $n$,
% which is treated as an arbitrary (but fixed) symbol.
%
% \begin{module}[id=arith]
% \symdef{Sumfromto}[4]{\sum_{#1=#2}^{#3}{#4}}
% \symdef[local]{arbitraryn}{n}
%
%\begin{exfig}
% \begin{verbatim}
% \begin{module}[id=arith]
%   \symdef{Sumfromto}[4]{\sum_{#1=#2}^{#3}{#4}}
%   \symdef[local]{arbitraryn}{n}
%   What is the sum of the first $\arbitraryn$ odd numbers, i.e.
%   $\Sumfromto{i}1\arbitraryn{2i-1}?$
% \end{module}
% \end{verbatim}
% \vspace{-2em}is formatted by {\sTeX} to \medskip\par\noindent
% What is the sum of the first $\arbitraryn$ odd numbers, i.e.
% $\Sumfromto{i}1\arbitraryn{2i-1}?$
% \caption{Semantic Markup in a {\tt{module}} context}\label{fig:semmodule}
% \end{exfig}
% \end{module}
%
% \subsection{Dealing with multiple Files}\label{sec:user:multiple}
%
% The infrastructure presented above works well if we are dealing with small files or
% small collections of modules. In reality, collections of modules tend to grow, get
% re-used, etc, making it much more difficult to keep everything in one file. This general
% trend towards increasing enthropy is aggravated by the fact that modules are very
% self-contiained objects that are ideal for re-used. Therefore in the absence of a
% content management system for {\LaTeX} document (fragments), module collections tend to
% develop towards the ``one module one file'' rule, which leads to situations with lots
% and lots of little files.
%
% Moreover, most mathematical documents are not self-contained, i.e. they do not build up
% the theory from scratch, but pre-suppose the knowledge (and notation) from other
% documents. In this case we want to make use of the semantic macros from these
% prerequisite documents without including their text into the current document. One way
% to do this would be to have {\LaTeX} read the prerequisite documents without producing
% output. For efficiency reasons, {\stex} chooses a different route. It comes with a
% utility |sms| (see Section~\ref{sec:utilities}) that exports the modules and macros
% defined inside them from a particular document and stores them inside |.sms| files. This
% way we can avoid overloading LaTeX with useless information, while retaining the
% important information which can then be imported in a more efficient way.
%
% \DescribeMacro{\importmodule} For such situations, the |\importmodule| macro can be
% given an optional first argument that is a path to a file that contains a path to the
% module file, whose module definition (the |.sms| file) is read. Note that the
% |\importmodule| macro can be used to make module files truly self-contained. To arrive
% at a file-based content management system, it is good practice to reuse the module
% identifiers as module names and to prefix module files with corresponding
% |\importmodule| statements that pre-load the corresponing module files.
%
%\begin{exfig}
% \begin{verbatim}
% \begin{module}[id=foo]
% \importmodule[../other/bar]{bar}
% \importmodule[../mycolleaguesmodules]{baz}
% \importmodule[../other/bar]{foobar}
%   ...
% \end{module}
% \end{verbatim}
% \vspace{-1.7em}
% \caption{Self-contained Modules via {\tt{importmodule}}}\label{exf:importmodule}
% \end{exfig}
%
% In Example~\ref{exf:importmodule}, we have shown the typical setup of a module
% file. The |\importmodule| macro takes great care that files are only read once, as
% {\sTeX} allows multiple inheritance and this setup would lead to an exponential (in the
% module inheritance depth) number of file loads.
%
% Note that the recursive (depth-first) nature of the file loads induced by this setup is
% very natural, but can lead to problems with the depth of the file stack in the {\TeX}
% formatte (it is usually set to something like 15). Therefore, it may be necessary to
% circumvent the recursive load pattern providing (logically spurious) |\importmodule|
% commands. Consider for instance module |bar| in Example~\ref{exf:importmodule}, say that
% |bar| already has load deph 15, then we cannot naivedly import it in this way. If module
% |bar| depended say on a module |base| on the critical load path, then we could add a
% statement \DescribeMacro{\requiremodules} |\requiremodules{../base}| in the second
% line. This would load the modules from |../base.sms| in advance (uncritical, since it
% has load depth 10), so that it would not have to be re-loaded in the critical path of
% the module |foo|. Solving the load depth problem.
% 
% \subsection{Including Externally Defined Semantic Macros }
% 
% In some cases, we use an existing {\LaTeX} macro package for typesetting objects that
% have a conventionalized mathematical meaning. In this case, the macros are ``semantic''
% even though they have not been defined by a |\symdef|. This is no problem, if we are
% only interested in the {\LaTeX} workflow. But if we want to e.g. transform them to
% {\omdoc} via {\latexml}, the {\latexml} bindings will need to contain references to an
% {\omdoc} theory that semantically correponds to the {\LaTeX} package. In particular,
% this theory will have to be imported in the generated {\omdoc} file to make it
% {\omdoc}-valid. 
%

% \DescribeMacro{\requirepackage} To deal with this situation, the |modules| package
% provides the |\requirepackage| macro. It takes two arguments: a package name, and a URI
% of the corresponing {\omdoc} theory. In the {\LaTeX} workflow this macro behaves like a
% |\usepackage| on the first argument, except that it can --- and should --- be used
% outside the {\LaTeX} preamble. In the {\latexml} workflow, this loads the {\latexml}
% bindings of the package specified in the first argument and generates an appropriate
% |imports| element using the URI in the second argument.
%
% \StopEventually{\ednotemessage}
%
% \section{The Implementation} 
%
% We declare some switches which will modify the behavior accoring to the package
% options. Generally, an option |xxx| will just set the appropriate switches to true
% (otherwise they stay false).
%    \begin{macrocode}
%<*package>
\newif\ifmod@env\mod@envfalse
\newif\ifmod@id\mod@idfalse
\newif\ifmod@display\mod@displayfalse
\newif\ifmod@uses\mod@usesfalse
\newif\ifmod@usesqualified\mod@usesqualifiedfalse
\DeclareOption{env}{\mod@envtrue}
\DeclareOption{id}{\mod@idtrue}
\DeclareOption{uses}{\mod@usestrue}
\DeclareOption{display}{\mod@displaytrue}
\DeclareOption{usesqualified}{\mod@usesqualifiedtrue}
%    \end{macrocode}
% Now, we define two collective options, which are equivalent to turning on all the other
% options.
%    \begin{macrocode}
\def\modtrue{\mod@idtrue\mod@usestrue\mod@displaytrue\mod@usesqualifiedtrue}
\DeclareOption{draft}{\modtrue}
\DeclareOption{all}{\modtrue}
%    \end{macrocode}
% Finally, we need to declare the end of the option declaration section to {\LaTeX}.
%    \begin{macrocode}
\ProcessOptions
%</package>
%    \end{macrocode}
%
% {\latexml} does not support module options yet, so we do not have to do anything here
% for the {\latexml} bindings. We only set up the {\perl} packages (and tell {\tt{emacs}}
% about the appropriate mode for convenience  
% 
% The next measure is to ensure that the |KeyVal| package is loaded (in the right
% version). for {\latexml}, we also initialize the package inclusions.
%    \begin{macrocode}
%<package>\RequirePackage{keyval}[1997/11/10]
%<*ltxml>
# -*- CPERL -*-
package LaTeXML::Package::Pool;
use strict;
use LaTeXML::Global;
use LaTeXML::Package;
RequirePackage('keyval');
%</ltxml>
%    \end{macrocode}
%
% \subsection{Modules}\label{sec:impl:modules}
% 
% We define the keys for the |module| environment and the actions that are undertaken,
% when the keys are encountered.
%
% \begin{macro}{module:cd}
%    This |KeyVal| key is only needed for {\latexml} at the moment; use this to specify a
%    content dictionary name that is different from the module name.
%    \begin{macrocode}
%<package>\define@key{module}{cd}{}
%<*ltxml>
DefKeyVal('Module','cd','Semiverbatim');
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{module:id}
% For a module with |[id=name]|, we create a macro |\module@defs@name| and initialize
% it. Furthermore, we save the name in |\mod@id|.
%    \begin{macrocode}
%<*package>
\define@key{module}{id}{%
  \edef\this@module{\expandafter\noexpand\csname module@defs@#1\endcsname}%
  \edef\this@qualified@module{\expandafter\noexpand\csname module@defs@qualified@#1\endcsname}%
  \global\@namedef{module@defs@#1}{}
  \global\@namedef{module@defs@qualified@#1}{}
  \def\mod@id{#1}}
%</package>
%<*ltxml>
DefKeyVal('Module','id','Semiverbatim');
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{environment}{module}
%    finally, we define the begin module command for the module environment. All the work
%    has already been done in the keyval bindings, so this is very simple.
%    \begin{macrocode}
%<package>\newenvironment{module}[1][]{\setkeys{module}{#1}\ifmod@env\show@mod@keys{module}\fi}{}
%    \end{macrocode}
% for the {\latexml} bindings, we have to do the work all at once. 
% \begin{macrocode}
%<*ltxml>
DefEnvironment('{module} OptionalKeyVals:Module',
	       "?#excluded()(<omdoc:theory ?&KeyVal(#1,'id')(xml:id='&KeyVal(#1,'id')')> #body</omdoc:theory>)", 
		#closed bracket ) seems to work fine now
		
		#commented this out - do we need current_theory?
		#plus: keyvals->getValue seems to be undefined?!
	       
	       #beforeConstruct=> sub {
		 #my ($doc, $keyvals, %props) = @_;
		 #my $theory = $keyvals->getValue('id') if $keyvals;
		 #$theory = ref $theory ? $theory->toString : 'UNDEFINED';
		 #AssignValue(current_theory => $theory);
		 #return;},
#   $Doc->openElement('omdoc:theory', 'xml:id' => $theory);
#   my $uses = $keyvals->getValue('usses');
#   $uses = ref $uses ? $uses->toString || '' : '';
#   $uses =~ s/\s+//g; $uses=~ s/^\{//; $uses=~ s/\}$//;
#   my $module_paths = LookupValue('module_paths') || {};
#   foreach my $used(split(',',$uses)) {
#     my $file = $module_paths->{$used}; $file .= '.omdoc#' if $file;
#     $doc->openElement('omdoc:imports', 'from' => $file.$used);
#     $doc->closeElement('omdoc:imports'); }
#   $doc->absorb($props{body}) if $props{body};
#   $doc->closeElement('omdoc:theory'); }
# return; },
       beforeDigest=>\&useTheoryItemizations,
       afterDigestBegin=>sub { 
       my($stomach, $whatsit)=@_;
       $whatsit->setProperty(excluded=>LookupValue('excluding_modules'));

       my $keys = $whatsit->getArg(1);
       my($id, $cd)=$keys
 	&& map(ToString($keys->getValue($_)),qw(id cd));
       $cd = $id unless $cd;
       # update the catalog with paths for modules
       my $module_paths = LookupValue('module_paths') || {};
       $module_paths->{$id} = LookupValue('last_module_path');
       AssignValue('module_paths', $module_paths, 'global');

       #Update the current module position
       AssignValue(current_module => $id);
       AssignValue(module_cd => $cd) if $cd;
#       my @uses = ();
#       if($uses){
# $uses =~ s/\s//g; $uses=~ s/^\{//; $uses=~ s/\}$//;
# @uses = split(',',$uses); }
###############      AssignValue("module_${id}_uses" => [@uses], 'global');
	#Idea: introdcue global list of used modules and activateScope on it once at the
	# main block.
       #use_module($id); #22.02.08 need to ALWAYS invoke this to make things global
       
       #activate the module in our current scope
       $STATE->activateScope("module:".$id); #changed from use_module as only needs to take care of current module
       return; });
%</ltxml>
%    \end{macrocode}
% \end{environment}
%
%
% \begin{macro}{usemodule}
% The |use_module| subroutine
% performs depth-first load of definitions of the used modules
%    \begin{macrocode}
%<*ltxml>
sub use_module {
  my($module)=@_;
  $module = ToString($module);
  # Depth-first load definitions from used modules
  foreach my $used_module (@{ LookupValue("module_${module}_uses") || []}){
    use_module($used_module); }
  # then load definitions for this module
  $STATE->activateScope("module:$module"); }
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\show@mod@keys}
%    The |\show@mod@keys| macro is used for the draft mode, they allow to annotate the
%    document with reminders of the key values in the modules.
%    \begin{macrocode}
%<*package>
\def\show@mod@keys@aux{%
\@ifundefined{mod@id}{}{\ifmod@id{id=\mod@id},\fi}%
\@ifundefined{mod@display}{}{\ifmod@display{display=\mod@display}\fi}
\@ifundefined{mod@uses}{\relax}{\ifmod@uses{uses=\mod@uses},\fi}
\@ifundefined{mod@usesqualified}\relax\else
            \ifmod@usesqualified{usesqualified=\mod@usesqualified},\fi\fi}
\def\clear@mod@keys{\let\mod@usesqualified=\relax\mod@uses=\relax
            \let\st@id=\relax\let\st@display=\relax}
\def\show@mod@keys#1{\footnote{#1[\show@mod@keys@aux]}\clear@mod@keys}
%</package>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{activate@defs}
%    To activate the symdefs from a given module xxx, we call the macro |\module@defs@xxx|. 
%    \begin{macrocode}
%<package>\def\activate@defs#1{\csname module@defs@#1\endcsname}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{export@defs}
%    To export a the symdefs from the current module, we all the macros |\module@defs@xxx|
%    to |\module@defs@xxx| (if the current module has a name and it is xxx)
%    \begin{macrocode}
%<*package>
\def\export@defs#1{\@ifundefined{mod@id}{}{
    \expandafter\expandafter\expandafter
         \g@addto@macro\expandafter
         \this@module\expandafter{\csname module@defs@#1\endcsname}}}
%</package>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\importmodule}
%   The |\importmodule[|\meta{file}|]{|\meta{mod}|}| macro is an interface macro that
%   loads \meta{file} and activates and re-exports the symdefs from module
%   \meta{mod}.\ednote{document it above, and implement it in {\latexml}}
%    \begin{macrocode}
%<*package>
\newcommand{\importmodule}[2][]{\def\@test{#1}%
\ifx\@test\@empty\else\requiremodules{#1}\fi
\activate@defs{#2}\export@defs{#2}}
%</package>
%<*ltxml>
DefConstructor('\importmodule[]{}',"<omdoc:imports from='?#1(#1)\# #2'/>",
 afterDigest=>sub {
   my($stomach,$whatsit)=@_;
   my $file = $whatsit->getArg(1);
   my $module = $whatsit->getArg(2); 
   $module = ToString($module);
   #if filepath is not supply simply look for the $module.sms file
   if (!$file) {$file=ToString($module)};
   my $containing_module = LookupValue('current_module');
   #set the relation between the current module and the one to be imported
   PushValue("module_".$containing_module."_uses"=>$module);
  #check if we've already loaded this module
  if(LookupValue('module_'.$module.'_loaded')) {use_module($module);} #if so activate it!
  else {
    #if not:
    my $gullet = $stomach->getGullet; 
    #1) mark as loaded
    AssignValue('module_'.$module.'_loaded' => 1, 'global');
    #open a group for its definitions so that they are localized
    $stomach->bgroup;
    #update the last module path
    AssignValue('last_module_path', $file);
    #queue the closing tag for this module in the gullet where it will be executed 
    #after all other definitions of the imported module have been taken care of
    $gullet->unread(Invocation(T_CS('\end@requiredmodule'), T_OTHER($module))->unlist);
    #we only need to load the sms definitions without generating any xml output, so we set the flag to 1
    AssignValue('excluding_modules' => 1);
    #queue this module's sms file in the gullet so that its definitions are imported
    $gullet->input($file,['sms']);
   }
   return;});
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \subsection{Semantic Macros}\label{sec:impl:symdef}
%
% We first define the optional KeyVal arguments for the |\symdef| form and the actions
% that are taken when they are encountered.
%
% \begin{macro}{symdef:aliases}
%   This optional key aliases for the symdef function allows us to provide additional
%   arguments representing other functions that are aliased by the one currently being
%   defined.
%    \begin{macrocode}
%<package>\define@key{symdef}{aliases}{}
%<*ltxml>
DefKeyVal('symdef','aliases','Semiverbatim');
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{symdef:local}
%   The optional argument local specifies the scope of the function to be defined. If
%   local is not present as an optional argument then |\symdef| assumes the scope of the
%   function is global and it will include it in the pool of macros of the current
%   module. Otherwise, if local is present then the function will be defined only locally
%   and it will not be added to the current module (i.e. we cannot inherit a local
%   function).  Note, the optional key local does not need a value: we write
%   |\symdef[local]{somefunction}[0]{some expansion}|
%    \begin{macrocode}
%<package>\define@key{symdef}{local}[true]{\@symdeflocaltrue}
%<*ltxml>
DefKeyVal('symdef','local','Semiverbatim','true');
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{symdef:}
%   The keys |cmmml|, |cattrs|, and |definitionURL| are not used in {\TeX/\LaTeX}
%   bindings\ednote{decide what we want to do about them in the future.}.
%    \begin{macrocode}
%<*package>
\define@key{symdef}{cmml}{}
\define@key{symdef}{cattrs}{}
\define@key{symdef}{definitionURL}{}
%</package>
%<*ltxml>
DefKeyVal('symdef','cmml','Semiverbatim','true');
DefKeyVal('symdef','cattrs','Semiverbatim','true');
DefKeyVal('symdef','definitionURL','Semiverbatim','true');
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\symdef}
%    The the |\symdef|, and |\@symdef| macros just handle optional arguments.
%    \begin{macrocode}
%<*package>
\newif\if@symdeflocal
\def\symdef{\@ifnextchar[{\@symdef}{\@symdef[]}}
\def\@symdef[#1]#2{\@ifnextchar[{\@@symdef[#1]{#2}}{\@@symdef[#1]{#2}[0]}}
%    \end{macrocode}
%    now comes the real meat: the |\@@symdef| macro does two things, it adds the macro
%    definition to the macro definition pool of the current module and also provides it.
%    \begin{macrocode}
\def\@@symdef[#1]#2[#3]#4{%
%    \end{macrocode}
% We use a switch to keep track of the local optional argument. We initialize the switch
% to false and check for the local keyword. Then we set all the keys that have been
% provided as arguments: aliases, local. First, using |\providecommand| we
% initialize the intermediate function, the one that can be changed internally with
% |\redefine| and then we link the actual function to it, again with |\providecommand|. We
% check if the switch for the local scope is set: if it is we are done, since this
% function has a local scope. Otherwise, we add these two functions to the module's pool
% of defined macros using |\g@addto@macro|. We add both functions so that we can keep the
% link between the real and the intermediate function whenever we inherit the
% module. Finally, using |\g@addto@macro| we add the two functions to the qualified
% version of the module.
%    \begin{macrocode}
\@symdeflocalfalse\setkeys{symdef}{#1}
   \expandafter\providecommand\csname modules@#2@pres\endcsname[#3]{#4}
   \expandafter\def\csname#2\endcsname{\csname modules@#2@pres\endcsname}
   \if@symdeflocal\else
   \@ifundefined{mod@id}{}{
   \expandafter\g@addto@macro\this@module{\expandafter\providecommand\csname modules@#2@pres\endcsname[#3]{#4}}%
   \expandafter\g@addto@macro\this@module{\expandafter\def\csname#2\endcsname{\csname modules@#2@pres\endcsname}}
   \expandafter\g@addto@macro\this@qualified@module{\expandafter\providecommand\csname modules@#2@pres@qualified\endcsname[#3]{#4}}%
   \expandafter\g@addto@macro\this@qualified@module{\expandafter\def\csname#2atqualified\endcsname{\csname modules@#2@pres@qualified\endcsname}}
   }\fi}
%</package>
%    \end{macrocode}
% In the {\latexml} bindings, we have a top-level macro that delegates the work to two
% internal macros: |\@symdef|, which defines the content macro and |\@symdef@pres|, which
% generates the {\omdoc} |symbol| and |presentation| elements (see
% Section~\ref{sec:impl:presentation}).
%    \begin{macrocode}
%<*ltxml>
DefMacro('\symdef OptionalKeyVals:symdef {}[][]{}',
      sub {
my($self,@args)=@_;
# print STDERR "excluding" if LookupValue('excluding_modules');
((Invocation(T_CS('\@symdef'),@args)->unlist),
 (LookupValue('excluding_modules') ? ()
 : (Invocation(T_CS('\@symdef@pres'), @args)->unlist))); 
});

DefPrimitive('\@symdef OptionalKeyVals:symdef {}[][]{}', sub {
  my($stomach,$keys,$cs,$nargs,$opt,$presentation)=@_;
  my($name,$cd,$role,$cmml,$cattrs,$definitionURL)=$keys 
    && map($_ && $_->toString,map($keys->getValue($_), qw(name cd role cmml cattrs definitionURL)));
  $cd = LookupValue('module_cd') unless $cd;
  $nargs = (ref $nargs ? $nargs->toString : $nargs || 0);
  my $module = LookupValue('current_module');
#  print STDERR "Define ".Stringify($cs)." in $module\n";
  my $scope = (($keys && ($keys->getValue('local') || '' eq 'true')) ? 'module_local' : 'module').":".$module;
  my $attr="name='#name' meaning='#meaning' omcd='#omcd'";
  DefConstructorI("\\".$cs->toString,convertLaTeXArgs($nargs,$opt),
		 ($nargs == 0
		  ? "<ltx:XMTok $attr scriptpos='#scriptpos'/>"
		  : "<ltx:XMApp scriptpos='#scriptpos'>"
		  .   "<ltx:XMTok $attr scriptpos='#operator_scriptpos'/>"
		  .   join('',map("<ltx:XMArg>#$_</ltx:XMArg>", (1..$nargs)))
		  ."</ltx:XMApp>"),
		 properties => {name=>$name, meaning=>$cs->toString,omcd=>$cd,role => $role},
		 scope=>$scope);
  return; });
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
%\begin{macro}{\redefine}
%  We can use this function to redefine our intermediate presentational function inside
%  the modules\ednote{does not seem to have a {\latexml} counterpart yet!}
%    \begin{macrocode}
%<package>\def\redefine#1[#2]#3{\expandafter\renewcommand\csname modules@#1@pres\endcsname[#2]{#3}}
%    \end{macrocode}
%\end{macro}
%
%\begin{macro}{\abbrdef}
% The |\abbrdef| macro is a variant of |\symdef| that does the same on the {\LaTeX} level.
%    \begin{macrocode}
%<package>\let\abbrdef\symdef
%<*ltxml>
DefPrimitive('\abbrdef OptionalKeyVals:symdef {}[][]{}', sub {
  my($stomach,$keys,$cs,$nargs,$opt,$presentation)=@_;
  my $module = LookupValue('current_module');
  my $scope = (($keys && ($keys->getValue('local') || '' eq 'true')) ? 'module_local' : 'module').":$module";
  DefMacroI("\\".$cs->toString,convertLaTeXArgs($nargs,$opt),$presentation,
	   scope=>$scope);
  return; });
%</ltxml>
%    \end{macrocode}
% \end{macro}
%
% \subsection{Loading Module Signatures}\ednote{talk about module signatures above (SMS
% files)}
% Before we can come to the functionality we want to offer, we need some auxiliary
% functions that deal with path names.
% \begin{macro}{\mod@simplify}
%    The |\mod@simplify| macro removes |xxx/..| from a string. eg: |aaa/bbb/../ddd| goes to
%    |aaa/ddd|. This is used to normalize relative path names below.
%    \begin{macrocode}
%<*package>
\def\mod@simplify#1{\expandafter\mod@simpl#1/\relax}
%    \end{macrocode}
% It is based on the |\mod@simpl| macro
%    \begin{macrocode}
\def\mod@simpl#1/#2\relax{%\message{ 1 = #1, 2 = #2 }%
\def\mod@test{}\ifx\mod@blaaaa\mod@test\edef\mod@savedprefix{}\def\mod@blaaaa{aaa}\else\fi
\def\mod@comp{#2}\ifx\mod@test\mod@comp\edef\mod@savedprefix{\mod@savedprefix#1}%
\else\mod@simplhelp#1/#2\relax\fi}
%    \end{macrocode}
%    which in turn is based on a helper macro
%    \begin{macrocode}
\def\mod@simplhelp#1/#2/#3\relax{%
\def\mod@test{}\def\mod@tust{#2}\def\mod@tist{#3}\def\mod@tost{..}\ifx\mod@test\mod@tist%
\ifx\mod@tost\mod@tust\edef\mod@savedprefix{}\else\edef\mod@savedprefix
{\mod@savedprefix#1/#2}\fi \else\ifx\mod@tost\mod@tust\mod@simpl#3\relax%
\else\edef\mod@savedprefix{\mod@savedprefix#1/}\mod@simplhelp#2/#3\relax\fi\fi}%
%    \end{macrocode}
% \end{macro}
% We will need a switch\ednote{Rares, say why?}
%    \begin{macrocode}
\newif\ifmodules
%    \end{macrocode}
% and a ``registry'' macro whose expansion represents the list of added macros (or files)
% \begin{macro}{\reg}
%    We initialize the |\reg| macro with the empty string.
%    \begin{macrocode}
\gdef\reg{}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@update}
%     This macro provides special append functionality. It takes a string and appends it
%     to the expansion of the |\reg| macro in the following way:  |string@\reg|.
%    \begin{macrocode}
\def\mod@update#1{\def\mod@empty{}
\ifx\reg\mod@empty\xdef\reg{#1}\else\xdef\reg{#1@\reg}\fi}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@check}
%   The |\mod@check| takes as input a file path (arg 3), and searches the registry. If the
%   file path is not in the registry it means it means it has not been already added, so
%   we make modulestrue, otherwise make modulesfalse. The macro |\mod@search| will look at
%   ifinclude and update the registry for modulestrue or do nothing for modulesfalse.
%    \begin{macrocode}
\def\mod@check#1@#2///#3\relax{%
\def\mod@empty{}\def\mod@one{#1}\def\mod@two{#2}\def\mod@three{#3}%
%    \end{macrocode}
%    Define a few intermediate macros so that we can split the registry into separate file
%    paths and compare to the new one
%    \begin{macrocode}
\expandafter\ifx\mod@three\mod@one\modulestrue\else\ifx\mod@two\mod@empty\modulesfalse%
\else\mod@check#2///#3\relax\fi\fi}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@search}
%    Macro for updating the registry after the execution of |\mod@check|
%    \begin{macrocode}
\def\mod@search#1{%
%    \end{macrocode}
%    We put the registry as the first argument for |\mod@check| and the other
%    argument is the new file path.
%    \begin{macrocode}
\modulesfalse\expandafter\mod@check\reg @///#1\relax%
%    \end{macrocode}
%    We run |\mod@check| with these arguments and the check |\ifmodules| for
%    the result
%    \begin{macrocode}
\ifmodules\else\mod@update{#1}\fi}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@reguse}
%   The macro operates almost as the |mod@search| function, but it does not update the
%   registry. Its purpose is to check whether some file is or not inside the registry but
%   without updating it. Will be used before deciding on a new sms file
%   \begin{macrocode}
\def\mod@reguse#1{\modulesfalse\expandafter\mod@check\reg @///#1\relax}
%   \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@prefix}
% This is a local macro for storing the path prefix, we initialize it as the empty
% string.
%    \begin{macrocode}
\def\mod@prefix{}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@updatedpre}
%    This macro allows to update the path prefix with the last part of the new path
%    \begin{macrocode}
\def\mod@updatedpre#1{
  \edef\mod@prefix{\mod@prefix\mod@pathprefix@check#1/\relax}}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\mod@pathprefix@check}
%   |\mod@pathprefix@check| returns the last word in a string composed of words separated
%   by slashes
%    \begin{macrocode}
\def\mod@pathprefix@check#1/#2\relax{%
\ifx\\#2\\% no slash in string
\else\mod@ReturnAfterFi{#1/\mod@pathprefix@help#2\relax}%
\fi}
%    \end{macrocode}
% It needs two helper macros:
%    \begin{macrocode}
\def\mod@pathprefix@help#1/#2\relax{%
\ifx\\#2\\% end of recursion
\else\mod@ReturnAfterFi{#1/\mod@pathprefix@help#2\relax}%
\fi}
\long\def\mod@ReturnAfterFi#1\fi{\fi#1}
%    \end{macrocode}
% \end{macro}
%
%\begin{macro}{\mod@pathpostfix@check}
%    |\mod@pathpostfix@check| takes a string composed of words separated by slashes and
%    returns the part of the string until the last slash
%    \begin{macrocode}
\def\mod@pathpostfix@check#1/#2\relax{% slash
\ifx\\#2\\%no slash in string
#1\else\mod@ReturnAfterFi{\mod@pathpostfix@help#2\relax}%
\fi}
%    \end{macrocode}
% Helper function for the pathpostfix@check function defined above
%    \begin{macrocode}
\def\mod@pathpostfix@help#1/#2\relax{%
\ifx\\#2\\%
#1\else\mod@ReturnAfterFi{\mod@pathpostfix@help#2\relax}%
\fi}
%    \end{macrocode}
% \end{macro}
%
%    \begin{macrocode}
\def\mod@updatedpost#1{%
\edef\mod@savedprefix{\mod@savedprefix\mod@pathpostfix@check#1/\relax} }
%    \end{macrocode}
% Macro that will add a |.sms| extension to a path. Will be used when adding a |.sms| file
%    \begin{macrocode}
\def\mod@updatesms{\edef\mod@savedprefix{\mod@savedprefix.sms}}
%</package>
%    \end{macrocode}
%
% \subsection{Selective Inclusion}
%
% \begin{macro}{\requiremodules}
%    \begin{macrocode}
%<*package>
\newcommand{\requiremodules}[1]{%
{\mod@updatedpre{#1} % add the new file to the already existing path
\let\mod@savedprefix\mod@prefix  % add the path to the new file to the prefix
\mod@updatedpost{#1}
\def\mod@blaaaa{} % macro used in the simplify function (remove .. from the prefix)
\mod@simplify{\mod@savedprefix} % remove |xxx/..| from the path (in case it exists)
\mod@reguse{\mod@savedprefix}
\ifmodules\else
\mod@updatesms    % update the file to contain the .sms extension
\let\newreg\reg   % use to compare, in case the .sms file was loaded before
\mod@search{\mod@savedprefix} % update registry
\ifx\newreg\reg\else\input{\mod@savedprefix}\fi % check if the registry was updated and load if necessary
\fi}}
%</package>
%<*ltxml>
DefPrimitive('\requiremodules{}', sub {
  my($stomach,$module)=@_;
  my $GULLET = $stomach->getGullet;
  $module = Digest($module)->toString;
  if(LookupValue('module_'.$module.'_loaded')) {}
  else {
    AssignValue('module_'.$module.'_loaded' => 1, 'global');
    $stomach->bgroup;
    AssignValue('last_module_path', $module);
    $GULLET->unread(T_CS('\end@requiredmodule'));
    AssignValue('excluding_modules' => 1);
    $GULLET->input($module,['sms']);
       }
  return;});

DefPrimitive('\end@requiredmodule{}',sub {
 #close the group
 $_[0]->egroup; 
 #print STDERR "END: ".ToString(Digest($_[1])->toString);
 #Take care of any imported elements in this current module by activating it and all its dependencies
 #print STDERR "Important: ".ToString(Digest($_[1])->toString)."\n";
 use_module(ToString(Digest($_[1])->toString)); 
 return; }); 
%</ltxml>
%    \end{macrocode}
% \end{macro}
% 
% \begin{macro}{\sinput}
%    \begin{macrocode}
%<*package>
\def\sinput#1{
{\mod@updatedpre{#1} % add the new file to the already existing path
\let\mod@savedprefix\mod@prefix  % add the path to the new file to the prefix
\mod@updatedpost{#1}
\def\mod@blaaaa{} % macro used in the simplify function (remove .. from the prefix)
\mod@simplify{\mod@savedprefix} % remove |xxx/..| from the path (in case it exists)
\mod@reguse{\mod@savedprefix}
\let\newreg\reg   % use to compare, in case the .sms file was loaded before
\mod@search{\mod@savedprefix} % update registry
\ifx\newreg\reg%\message{This file has been previously introduced}
\else\input{\mod@savedprefix}\fi}}
%</package>
%<*ltxml>
DefPrimitive('\sinput{}', sub {
  my($stomach,$module)=@_;
  my $GULLET = $stomach->getGullet;
  $module = Digest($module)->toString;
  AssignValue('module_'.$module.'_loaded' => 1, 'global');
  $stomach->bgroup;
  AssignValue('last_module_path', $module);
  $GULLET->unread(Invocation(T_CS('\end@requiredmodule'),T_OTHER($module))->unlist);
  $GULLET->input($module,['tex']);
  return;});
%</ltxml>
%    \end{macrocode}
% \end{macro}
% \ednote{the sinput macro is just faked, it should be more like requiremodules, except
% that the tex file is inputted; I wonder if this can be simplified.}
% 
% \subsection{Generating {\texorpdfstring\omdoc{OMDoc}} Presentation Elements}\label{sec:impl:presentation}
%
% Additional bundle of code to generate presentation encodings. Redefined to an expandable
% (macro) so that we can add conversions.
% 
%    \begin{macrocode}
%<*ltxml>
DefMacro('\@symdef@pres  OptionalKeyVals:symdef {}[][]{}', sub {
  my($self,$keys, $cs,$nargs,$opt,$presentation)=@_;
  Invocation(T_CS('\@symdef@pres@aux'),
     $cs,
     ($nargs || Tokens(T_OTHER(0))),
     symdef_presentation_pmml($cs,ToString($nargs)||0,$presentation),
     symdef_presentation_TeX($presentation),
     $keys)->unlist; });
%    \end{macrocode}
% Generate the expansion of a symdef'd macro using special arguments
%    \begin{macrocode}
sub symdef_presentation_pmml {
  my($cs,$nargs,$presentation)=@_;
  my @toks = $presentation->unlist;
  while(@toks && $toks[0]->equals(T_SPACE)){ pop(@toks); }  # Remove leading space
  $presentation = Tokens(@toks);
  # Wrap with \@use, unless already has a recognized formatter.
  $presentation = Invocation(T_CS('\@use'),$presentation)  # Using simple text for now, until getting a proper \@use
    unless @toks && ($toks[0]->toString =~ /^\\(infix|prefix|postfix|assoc|use|mixfixi|mixfixa|mixfixii|mixfixia|mixfixai|mixfixiii)$/);
  # Low level substitution.
  my @args = map(Invocation(T_CS('\@SYMBOL'),T_OTHER("pres_arg:".($_+1))),1..$nargs);
  $presentation = Tokens(LaTeXML::Expandable::substituteTokens($presentation,@args));
  $presentation; }
%    \end{macrocode}
% The |\@use| macro just generates the contents of the notation element
%    \begin{macrocode}
DefConstructor('\@use {}',
               "<omdoc:prototype>"
               .  "<om:OMS cd='' name=''/>"
               ."</omdoc:prototype>"
               ."<omdoc:rendering>"
               .  "<ltx:Math><ltx:XMath>#1</ltx:XMath></ltx:Math>"
               ."</omdoc:rendering>",
               mode=>'inline_math');
%    \end{macrocode}
% The |get_cd| procedure reads of the cd from our list of keys.
%    \begin{macrocode}
sub get_cd {
   my($name,$cd,$role,$cmml,$cattrs,$definitionURL)=@_;
   return $cd;} 
%    \end{macrocode}
% The |\@symdef@pres@aux| creates the |symbol| element and the outer layer of the of the
% |notation| element. The content of the latter is generated by applying the {\latexml} to
% the definiens of the |\symdef| form. 
%    \begin{macrocode}
DefConstructor('\@symdef@pres@aux{}{}{}{} OptionalKeyVals:symdef',
        "<omdoc:symbol name='#1'/>"
       ."<omdoc:notation name='#name' cd='&get_cd(#5)'>" 
         ."#3"
       ."</omdoc:notation>",
       afterDigest=>sub { my ($stomach, $whatsit) = @_;
  my $keys = $whatsit->getArg(5);
  my $module = LookupValue('current_module');
  $whatsit->setProperties(for=>ToString($whatsit->getArg(1)));
  $whatsit->setProperty(role=>($keys ? $keys->getValue('role')
       : (ToString($whatsit->getArg(2)) ? 'applied'
  : undef))); });
%    \end{macrocode}
% Convert a macro body (tokens with parameters |#1|,..) into a Presentation |style=TeX| form.
% walk through the tokens, breaking into chunks of neutralized (|T_OTHER|) tokens and
% parameter specs.
%    \begin{macrocode}
sub symdef_presentation_TeX {
  my($presentation)=@_;
  my @tokens = $presentation->unlist;
  my(@frag,@frags) = ();
  while(my $tok = shift(@tokens)){
    if($tok->equals(T_PARAM)){
      push(@frags,Invocation(T_CS('\@symdef@pres@text'),Tokens(@frag))) if @frag;
      @frag=();
      my $n = shift(@tokens)->getString;
      push(@frags,Invocation(T_CS('\@symdef@pres@arg'),T_OTHER($n+1))); }
    else {
      push(@frag,T_OTHER($tok->getString)); }} # IMPORTANT! Neutralize the tokens!
  push(@frags,Invocation(T_CS('\@symdef@pres@text'),Tokens(@frag))) if @frag;
  Tokens(map($_->unlist,@frags)); }

DefConstructor('\@symdef@pres@arg{}', "<omdoc:recurse select='#select'/>",
	       afterDigest=>sub { my ($stomach, $whatsit) = @_;
				  my $select = $whatsit->getArg(1);
				  $select = ref $select ? $select->toString : '';
				  $whatsit->setProperty(select=>"*[".$select."]"); });

DefConstructor('\@symdef@pres@text{}', "<omdoc:text>#1</omdoc:text>");
%</ltxml>
%    \end{macrocode}
%
% 
% \subsection{Including Externally Defined Semantic Macros }\label{sec:impl:packages}
% 
% \begin{macro}{\requirepackage}
%    \begin{macrocode}
%<package>\def\requirepackage#1#2{\makeatletter\input{#1.sty}\makeatother}
%<*ltxml>
DefConstructor('\requirepackage{} Semiverbatim',"<omdoc:imports from='#2'/>",
       afterDigest=>sub { my ($stomach, $whatsit) = @_;
  my $select = $whatsit->getArg(1);
  RequirePackage($select->toString); });
%    \end{macrocode}
% \end{macro}
% 
% \subsection{Deprecated Functionality}\label{sec:impl:deprecated}
%
% In this section we centralize old interfaces that are only partially supported any more. 
% \begin{macro}{module:uses}
%   For each the module name |xxx| specified in the |uses| key, we activate their symdefs
%   and we export the local symdefs.\ednote{this isue is deprecated, it will be removed
%     before 1.0.}
%    \begin{macrocode}
%<*package>
\define@key{module}{uses}{%
  \@for\module@tmp:=#1\do{\activate@defs\module@tmp\export@defs\module@tmp}}
%</package>
%    \end{macrocode}
%
% \begin{macro}{module:usesqualified}
%   This option operates similarly to the module:uses option defined above. The only
%   difference is that here we import modules with a prefix. This is useful when two
%   modules provide a macro with the same name.
%    \begin{macrocode}
%<*package>
\define@key{module}{usesqualified}{%
  \@for\module@tmp:=#1\do{\activate@defs{qualified@\module@tmp}\export@defs\module@tmp}}
%</package>
%    \end{macrocode}
% \end{macro}
%
% \subsection{Finale}
%
% Finally, we need to terminate the file with a success mark for perl.
%    \begin{macrocode}
%<ltxml>1;
%    \end{macrocode}
% 
% \section {Utility}\label{sec:utilities}
% \Finale
\endinput
% \iffalse
%%% Local Variables: 
%%% mode: doctex
%%% TeX-master: t
%%% End: 
% LocalWords:  GPL structuresharing STR dtx env envfalse idfalse displayfalse
% LocalWords:  usesfalse usesqualified usesqualifiedfalse envtrue idtrue CPERL
% LocalWords:  usestrue displaytrue usesqualifiedtrue RequirePackage keyval tmp
% LocalWords:  defs foreach LookupValue activateScope DefEnvironment keyvals cd
% LocalWords:  OptionalKeyVals getValue toString AssignValue openElement omdoc
% LocalWords:  closeElement beforeDigest useTheoryItemizations afterDigestBegin
% LocalWords:  whatsit setProperty getArg qw symdef cmml cattrs definitionURL
% LocalWords:  DefKeyVal Semiverbatim symdeflocal atqualified DefMacro STDERR
% LocalWords:  args unlist DefPrimitive nargs Stringify eq attr omcd ltx XMTok
% LocalWords:  DefConstructorI convertLaTeXArgs scriptpos XMApp OMA XMArg simpl
% LocalWords:  DefMacroI blaaaa savedprefix aaa simplhelp tust tist tost reguse
% LocalWords:  updatedpre ReturnAfterFi updateall updatedpost updatesms bgroup
% LocalWords:  texclude tinclude getGullet requiredmodule tex sms egroup pmml
% LocalWords:  toks mixfixi mixfixa mixfixii mixfixia mixfixai mixfixiii arg
% LocalWords:  DefConstructor afterDigest setProperties undef tok PARAM
% LocalWords:  getString
% \fi
