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% sansmathaccent.sty, version 2
%
% Fixes a problem with accent placement in beamer and sfmath
%
% author: Ariel Barton
%
% Copyright Ariel Barton, 2012, 2013
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3 of this license or (at your option) any
% later version.
% The latest version of the license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of
% LaTeX version 2003/06/01 or later.
%
% This work has the LPPL maintenance status "author-maintained".
%
% The complete list of files considered part of this work is in
% the file `sansmathaccent.pdf' and its source code `sansmathaccent.tex'.
%
\ProvidesPackage{sansmathaccent}[2013/03/28]
\def\sansmathaccent@warning{sansmathaccent is not a standalone package; it should be used with beamer or sfmath}
\@ifpackageloaded{bm}{\PackageWarning{sansmathaccent}{Please load bm after loading sansmathaccent}}
\providecommand\beamer@font@check{
% Code borrowed from beamerbasefont
% to see if we are using any font packages
\def\beamer@cmr{cmr}
\edef\beamer@fmdef{\mathfamilydefault}
% supress for standard cm
\ifx\beamer@fmdef\beamer@cmr\beamer@suppressreplacementstrue\fi
% supress for mathtime serif and math minion serif
\@ifpackageloaded{arevmath}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{hvmath}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{kpfonts}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{lucidabr}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{lucimatx}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{mathpmnt}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{mathpple}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{mathtime}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{mtpro}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
\@ifpackageloaded{mtpro2}{\ifbeamer@sansmath\else\beamer@suppressreplacementstrue\fi}{}
}
% Check to see if we are a Beamer document
\@ifpackageloaded{beamerbasefont}{%
\def\sansmathaccent@warning{}
% Ensure proper placement of accents with bm
% but don't waste a mathgroup unless we will in fact use
% bm and pureletters
\IfFileExists{filehook.sty}{
\RequirePackage{filehook}
\AtBeginOfFile{bm.sty}{
\beamer@font@check \ifbeamer@suppressreplacements\else
\DeclareSymbolFont{pureletters}{OT1}{mathkerncmss}{m}{sl}
\SetSymbolFont{pureletters}{bold}{OT1}{mathkerncmss}{bx}{sl}
\fi
}
}{
\DeclareSymbolFont{pureletters}{OT1}{mathkerncmss}{m}{sl}
\SetSymbolFont{pureletters}{bold}{OT1}{mathkerncmss}{bx}{sl}
\PackageWarning{sansmathaccent}{Could not find 'filehooks' package: one mathgroup may be wasted}
}
\AtBeginDocument{
\ifbeamer@suppressreplacements\else
% Check to see if we are using cmss for math
\def\sansmathaccent@cmss{cmss}
\ifx\beamer@fmdef\sansmathaccent@cmss
% Use properly kerned alphabets
\DeclareSymbolFont{pureletters}{OT1}{mathkerncmss}{m}{sl}%
\ifx\mv@bold\@undefined\else % Compatibility with the bm package
\SetSymbolFont{pureletters}{bold}{OT1}{mathkerncmss}{bx}{sl}
\fi
\else
% If we are using sans serif, but not cmss, for math,
% make sure bm doesn't accidentally end up using bold cmss
\ifx \symboldpureletters \undefined \else
\DeclareSymbolFont{boldpureletters}{\encodingdefault} {\mathfamilydefault}{bx}{it}
\fi
\fi
\fi
}
}{}
% Check to see if we are a sfmath document
% This is less fancy, because sfmath doesn't delay with AtBeginDocument
\@ifpackageloaded{sfmath}{%
\def\sansmathaccent@warning{}
\edef\tmp@sfdefault{\math@sfdefault}
\def\tmp@compare{cmss}
\ifx\tmp@sfdefault\tmp@compare % Check to see if we are using cmss for math
\DeclareSymbolFont{SFMath}{OT1}{mathkerncmss}{m}{sl}
\SetSymbolFont{SFMath}{normal}{OT1}{mathkerncmss}{m}{sl}
\SetSymbolFont{SFMath}{bold}{OT1}{mathkerncmss}{bx}{sl}
\fi
}{}
\ifx \sansmathaccent@warning\empty \else
\PackageWarning{sansmathaccent}{\sansmathaccent@warning}
\fi
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