[NTG-context] Re: Converting Latex style files for use in Context

12 Dec 2003

      Hi,
...
Like all TeX related things you can find it in CTAN, exactly in
well, not *all* TeX relatet stuff is on CTAN...
...
http://www.ctan.org/tex-archive/macros/latex209/contrib/misc/ebnf.sty

...
The file is old (1991)
and incorrect (the last Cat is missing its backslash). And even with
this backslash, the formatting is strange. I'd suggest something like
this (warning: ugly(!!) LaTeX code ahead):

\begingroup 
   \catcode`\|=13
   \catcode`\<=13
    \gdef\EBNF
    {\list{???}%
      {%
        \def|{$\mid$}%
        \def\makelabel##1{<##1> ::=}%
        \def\Cat##1{$\langle${\it ##1\/}$\rangle$}
        \def<##1>{\Cat{##1}}
        \parsep=0pt \itemsep=\smallskipamount
        \leftmargin=\parindent \advance\leftmargin+2em
        \labelsep=0.5em \labelwidth=1.5em
        \raggedright
        \catcode`\|=13 
        \catcode`\<=13 
      }%
    }
\endgroup

\let\endEBNF\endlist

\documentclass{article}
\usepackage{calc}
\begin{document}

\begin{EBNF}
    \item[glue]       <dimen> [~`plus' <stretch>~] [~`minus' <stretch>~].
    \item[stretch]    <dimen> | <fil dimen>.
    \item[fil dimen]  <factor> (~`fil' | `fill' | `filll'~).
\end{EBNF}

\end{document}

which looks like this:

<glue>::= <dimen> [ ‘plus’ <stretch> ] [ ‘minus’ <stretch> ].
<stretch>::= <dimen>| <fil dimen>.
<fil dimen>::= <factor >( ‘fil’ | ‘fill’ | ‘filll’ ).

Patrick
-- 
mon trainsistor j'adore

[NTG-context] Re: Converting Latex style files for use in Context

Patrick Gundlach