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%%
%% This is file `fixdif.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% fixdif.dtx (with options: `package')
%%
%% Copyright (C) 2022 by Zhang Tingxuan <alphaztx@163.com>
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3c of this license or (at your option) any later
%% version. The latest version of this license is in:
%%
%% http://www.latex-project.org/lppl.txt
%%
%% and version 1.3 or later is part of all distributions of
%% LaTeX version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `maintained'.
%%
%% The Current Maintainer of this work is Zhang Tingxuan.
%%
%% This work consists of the files fixdif.dtx,
%% and the derived files fixdif.ins,
%% fixdif.sty,
%% fixdef.pdf,
%% and README.md.
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{fixdif}[2022/05/29 Interface for defining the differential operator.]
\@ifpackageloaded{unicode-math}{
\Umathcode`\/="4 "0 "002F
\Umathcode"2044="4 "0 "2044
\Umathcode"2215="4 "0 "2215
\Umathcode"2F98="4 "0 "2F98
\Umathcode`\\="4 "0 "005C
\Umathcode"2216="4 "0 "2216
\Umathcode"29F5="4 "0 "29F5
\Umathcode"29F9="4 "0 "29F9
}{
\mathcode`\/="413D
\mathcode`\\="426E % \backslash
\def\backslash{\delimiter"426E30F\relax}
}
\def\mup@tch{\mathchoice{\mskip-\thinmuskip}{\mskip-\thinmuskip}{}{}}
\def\s@beforep@tch{\mathchoice{}{}{\mbox{}}{\mbox{}}}
\DeclareOption{rm}{\@ifpackageloaded{unicode-math}
{\def\@@dif{\symrm{d}}}{\def\@@dif{\mathrm{d}}}}
\DeclareOption{normal}{\def\@@dif{d}}
\DeclareOption{partial}{\def\fixdif@partial@bool{1}}
\DeclareOption{nopartial}{\def\fixdif@partial@bool{0}}
\ExecuteOptions{rm,partial}
\ProcessOptions\relax
\def\fixdif@partial@true{1}
\ifx\fixdif@partial@bool\fixdif@partial@true
\AtEndOfPackage{\letdif{\partial}{partial}}
\fi
\gdef\resetdfont#1{\let\@@dif\relax%
\def\@@dif{#1{d}}}
\def\@dif{\mathinner{\@@dif}\mup@tch}
\let\d@accent\d
\DeclareRobustCommand\d{\ifmmode\@dif\else\expandafter\d@accent\fi}
\def\@letdif#1#2{\AtBeginDocument{%
\ifcsname #2@old\endcsname\else%
\expandafter\let\csname #2@old\expandafter\endcsname
\csname #2\endcsname%
\fi%
\gdef#1{\mathinner{\csname #2@old\endcsname}\mup@tch}%
}}
\def\s@letdif#1#2{\AtBeginDocument{%
\ifcsname #2@old\endcsname\else%
\expandafter\let\csname #2@old\expandafter\endcsname
\csname #2\endcsname%
\fi%
\gdef#1{\mathinner{\s@beforep@tch\csname #2@old\endcsname\mbox{}}\mup@tch}%
}}
\def\letdif{\@ifstar\s@letdif\@letdif}
\long\def\@newdif#1#2{\AtBeginDocument{%
\ifdefined#1
\PackageError{fixdif}{\string#1 is already defined.}
{Try another command instead of \string#1.}%
\else
\long\gdef#1{\mathinner{#2}\mup@tch}%
\fi%
}}
\long\def\s@newdif#1#2{\AtBeginDocument{%
\ifdefined#1
\PackageError{fixdif}{\string#1 is already defined.}
{Try another command instead of \string#1.}%
\else
\long\gdef#1{\s@beforep@tch\mathinner{#2\mbox{}}\mup@tch}%
\fi%
}}
\def\newdif{\@ifstar\s@newdif\@newdif}
\long\def\@renewdif#1#2{\AtBeginDocument{%
\ifdefined#1
\long\gdef#1{\mathinner{#2}\mup@tch}%
\else
\PackageError{fixdif}{\string#1 has not been defined yet.}
{You should use \string\newdif instead of \string\renewdif.}%
\fi%
}}
\long\def\s@renewdif#1#2{\AtBeginDocument{%
\ifdefined#1
\long\gdef#1{\s@beforep@tch\mathinner{#2\mbox{}}\mup@tch}%
\else
\PackageError{fixdif}{\string#1 has not been defined yet.}
{You should use \string\newdif instead of \string\renewdif.}%
\fi%
}}
\def\renewdif{\@ifstar\s@renewdif\@renewdif}
\endinput
%%
%% End of file `fixdif.sty'.
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