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um-code-compat.dtx
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um-code-compat.dtx
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%%^^A%% um-code-compat.dtx -- part of UNICODE-MATH <wspr.io/unicode-math>
%%^^A%% Compatibility with 3rd party packages.
% \section{Compatibility}
%
% \begin{macrocode}
%<*package>
% \end{macrocode}
%
%
% \section{Patching/augmenting 3rd-party packages}
%
% \subsection{\pkg{url}}
% Here we need to get \pkg{url} in a state such that
% when it switches to math mode and enters \ascii\ characters, the maths
% setup (i.e., \pkg{unicode-math}) doesn't remap the symbols into Plane 1.
% Which is what \cs{symliteral} is intended to do.
% This is the same as writing, e.g., |\def\UrlFont{\ttfamily\@@_switch_to:n{literal}}|
% but activates automatically so documents that might change the \cs{url}
% font through the standard interface still work correctly.
% \begin{macrocode}
\@@_after_package:nNn {url} \@@_patch_url:
{
\tl_put_left:Nn \Url@FormatString { \@@_switch_to:n {literal} }
\tl_put_right:Nn \UrlSpecials
{
\do \` { \mathchar`\` }
\do \' { \mathchar`\' }
\do \$ { \mathchar`\$ }
\do \& { \mathchar`\& }
}
}
% \end{macrocode}
%
%
% \subsection{\pkg{mathtools}}
%
% \pkg{mathtools}’s |\cramped| command and others that make use of its internal version use an incorrect font dimension.
%
% The \XeTeX\ version is pretty similar to the legacy version, only using the correct font dimensions.
% Note we used `\verb|\XeTeXradical|' with the family 255 to be almost sure
% that the radical rule width is not set. Former use of `\verb|\newfam|' had an
% upsetting effect on legacy math alphabets.
% \begin{macrocode}
%<*XE>
\@@_after_package:nNn { mathtools } \@@_patch_mathtools_A:
{
\cs_set_nopar:Npn \MT_cramped_internal:Nn ##1 ##2
{
\hbox_set:Nn \l_tmpa_box
{
\color@setgroup \c_math_toggle_token \m@th
##1
\dim_zero:N \nulldelimiterspace
\XeTeXradical 255 ~ 0 ~ { ##2 }
\c_math_toggle_token \color@endgroup
}
\box_set_ht:Nn \l_tmpa_box
{
\box_ht:N \l_tmpa_box - \@@_radical_vgap:N ##1
}
\box_use_drop:N \l_tmpa_box
}
}
%</XE>
% \end{macrocode}
%
% \begin{macro}{\overbracket}
% \begin{macro}{\underbracket}
% \pkg{mathtools}’s |\overbracket| and |\underbracket| take optional
% arguments and are defined in terms of rules, so we keep them, and rename
% ours to |\Uoverbracket| and |\Uunderbracket|.
%
% Original definition used the height of |\braceld| which is not available
% with Unicode fonts, so we are hard coding the $5/18$ex suggested by
% \pkg{mathtools}’s documentation.
% \begin{macrocode}
\@@_after_package:nNn { mathtools } \@@_patch_mathtools_B:
{
\cs_set_eq:NN \MToverbracket \overbracket
\cs_set_eq:NN \MTunderbracket \underbracket
\AtBeginDocument
{
\msg_warning:nn { unicode-math } { mathtools-overbracket }
\cs_set:Npn \downbracketfill ##1 ##2
{
\tl_set:Nn \l_MT_bracketheight_fdim {.27ex}
\downbracketend {##1} {##2}
\leaders \vrule \@height ##1 \@depth \z@ \hfill
\downbracketend {##1} {##2}
}
\cs_set:Npn \upbracketfill ##1 ##2
{
\tl_set:Nn \l_MT_bracketheight_fdim {.27ex}
\upbracketend {##1} {##2}
\leaders \vrule \@height \z@ \@depth ##1 \hfill
\upbracketend {##1} {##2}
}
\cs_set_eq:NN \Uoverbracket \overbracket
\cs_set_eq:NN \Uunderbracket \underbracket
\cs_set_eq:NN \overbracket \MToverbracket
\cs_set_eq:NN \underbracket \MTunderbracket
}
}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\dblcolon}
% \begin{macro}{\coloneqq}
% \begin{macro}{\Coloneqq}
% \begin{macro}{\eqqcolon}
% \pkg{mathtools} defines several commands as combinations of colons and
% other characters, but with meanings incompatible to \pkg{unicode-math}.
% Thus we issue a warning. Note \pkg{mathtools} uses
% \cmd{\providecommand} \cmd{\AtBeginDocument}.
% \begin{macrocode}
\@@_after_package:nNn { mathtools } \@@_patch_mathtools_C:
{
\msg_warning:nn { unicode-math } { mathtools-colon }
\DeclareDocumentCommand \dblcolon { } { \Colon }
\DeclareDocumentCommand \coloneqq { } { \coloneq }
\DeclareDocumentCommand \Coloneqq { } { \Coloneq }
\DeclareDocumentCommand \eqqcolon { } { \eqcolon }
}
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macrocode}
%</package>
% \end{macrocode}
\endinput
% /©
%
% ------------------------------------------------
% The UNICODE-MATH package <wspr.io/unicode-math>
% ------------------------------------------------
% 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/>.
% ------------------------------------------------
% Copyright 2006-2019 Will Robertson, LPPL "maintainer"
% Copyright 2010-2017 Philipp Stephani
% Copyright 2011-2017 Joseph Wright
% Copyright 2012-2015 Khaled Hosny
% ------------------------------------------------
%
% ©/