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%%^^A%% fontspec-code-patches.dtx -- part of FONTSPEC <wspr.io/fontspec>
% \section{Patching code}
%
% \begin{macrocode}
%<*fontspec>
% \end{macrocode}
%
% \subsection{\cmd\-}
%
% \begin{macro}{\-}
% This macro is courtesy of Frank Mittelbach and the \LaTeXe\ source code.
% \begin{macrocode}
\DeclareRobustCommand{\-}
{
\discretionary
{
\char\ifnum\hyphenchar\font<\z@
\xlx@defaulthyphenchar
\else
\hyphenchar\font
\fi
}{}{}
}
\def\xlx@defaulthyphenchar{`\-}
% \end{macrocode}
% \end{macro}
%
%
% \subsection{Verbatims}
%
% Many thanks to Apostolos Syropoulos for discovering this problem and writing the redefinion of \LaTeX's |verbatim| environment and \cs{verb*} command.
%
% \begin{macro}{\fontspec_visible_space:}
% Print \unichar{2423}{Open box}, which is used to visibly display a space character.
% \begin{macrocode}
\cs_new:Nn \fontspec_visible_space:
{
\@@_primitive_font_glyph_if_exist:NnTF \font {"2423}
{ \char"2423\scan_stop: }
{ \fontspec_visible_space_fallback: }
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\fontspec_visible_space_fallback:}
% If the current font doesn't have \unichar{2423}{Open box}, use Latin Modern Mono instead.
% \begin{macrocode}
\cs_new:Nn \fontspec_visible_space_fallback:
{
{
\usefont{\g_fontspec_encoding_tl}{lmtt}{\f@series}{\f@shape}
\textvisiblespace
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\fontspec_print_visible_spaces:}
% Helper macro to turn spaces (\verb|^^20|) active and print visible space instead.
% \begin{macrocode}
\group_begin:
\char_set_catcode_active:n{"20}%
\cs_gset:Npn\fontspec_print_visible_spaces:{%
\char_set_catcode_active:n{"20}%
\cs_set_eq:NN^^20\fontspec_visible_space:%
}%
\group_end:
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\verb}
% \begin{macro}{\verb*}
% Redefine \cmd\verb\ to use \cmd\fontspec_print_visible_spaces:.
% \begin{macrocode}
\def\verb
{
\relax\ifmmode\hbox\else\leavevmode\null\fi
\bgroup
\verb@eol@error \let\do\@makeother \dospecials
\verbatim@font\@noligs
\@ifstar\@@sverb\@verb
}
\def\@@sverb{\fontspec_print_visible_spaces:\@sverb}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
% It's better to put small things into \cmd\AtBeginDocument, so here we go:
% \begin{macrocode}
\AtBeginDocument
{
\fontspec_patch_verbatim:
\fontspec_patch_moreverb:
\fontspec_patch_fancyvrb:
\fontspec_patch_listings:
}
% \end{macrocode}
%
% \begin{environment}{verbatim*}
% With the \pkg{verbatim} package.
% \begin{macrocode}
\cs_set:Npn \fontspec_patch_verbatim:
{
\@ifpackageloaded{verbatim}
{
\cs_set:cpn {verbatim*}
{
\group_begin: \@verbatim \fontspec_print_visible_spaces: \verbatim@start
}
}
% \end{macrocode}
% This is for vanilla \LaTeX.
% \begin{macrocode}
{
\cs_set:cpn {verbatim*}
{
\@verbatim \fontspec_print_visible_spaces: \@sxverbatim
}
}
}
% \end{macrocode}
% \end{environment}
%
% \begin{environment}{listingcont*}
% This is for \pkg{moreverb}.
% The main |listing*| environment inherits this definition.
% \begin{macrocode}
\cs_set:Npn \fontspec_patch_moreverb:
{
\@ifpackageloaded{moreverb}
{
\cs_set:cpn {listingcont*}
{
\cs_set:Npn \verbatim@processline
{
\thelisting@line \global\advance\listing@line1\relax
\the\verbatim@line\par
}
\@verbatim \fontspec_print_visible_spaces: \verbatim@start
}
}{}
}
% \end{macrocode}
% \end{environment}
%
% \pkg{listings} and \pkg{fancvrb} make things nice and easy:
% \begin{macrocode}
\cs_set:Npn \fontspec_patch_fancyvrb:
{
\@ifpackageloaded{fancyvrb}
{
\cs_set_eq:NN \FancyVerbSpace \fontspec_visible_space:
}{}
}
% \end{macrocode}
%
% \begin{macrocode}
\cs_set:Npn \fontspec_patch_listings:
{
\@ifpackageloaded{listings}
{
\cs_set_eq:NN \lst@visiblespace \fontspec_visible_space:
}{}
}
% \end{macrocode}
%
% \subsection{\cs{oldstylenums}}
%
%
% \begin{macro}{\oldstylenums}
% \begin{macro}{\liningnums}
% This command obviously needs a redefinition.
% And we may as well provide the reverse command.
% \begin{macrocode}
\RenewDocumentCommand \oldstylenums {m}
{
{ \addfontfeature{Numbers=OldStyle} #1 }
}
\NewDocumentCommand \liningnums {m}
{
{ \addfontfeature{Numbers=Lining} #1 }
}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
%
% \begin{macrocode}
%</fontspec>
% \end{macrocode}
\endinput
% /©
% ------------------------------------------------
% The FONTSPEC package <wspr.io/fontspec>
% ------------------------------------------------
% Copyright 2004-2019 Will Robertson, LPPL "maintainer"
% Copyright 2009-2015 Khaled Hosny
% Copyright 2013 Philipp Gesang
% Copyright 2013-2016 Joseph Wright
% ------------------------------------------------
% This package is free software and may be redistributed and/or modified under
% the conditions of the LaTeX Project Public License, version 1.3c or higher
% (your choice): <http://www.latex-project.org/lppl/>.
% ------------------------------------------------
% ©/
|