xspace-emdash-fix.tex

% https://tex.stackexchange.com/questions/263271
\xspaceremoveexception{-}
\makeatletter
\renewcommand*\@xspace@hook{%
\ifx\@let@token-%
\expandafter\@xspace@dash@i
\fi
}
\def\@xspace@dash@i-{\futurelet\@let@token\@xspace@dash@ii}
\def\@xspace@dash@ii{%
\ifx\@let@token-%
\else
\unskip
\fi
-%
}
\makeatother