[texhax] spurious space with abbrevs.sty

[Ulrike Fischer]

Am Fri, 28 Sep 2012 10:44:41 +0200 schrieb Herbert Voss:

> there is a problem with the internal macro \maybe at space@
> which _always_ inserts a space. However, the package abbrevs
> loads some other packages which might have change their
> behaviour.

I can't see how it could ever have worked: \maybe at space@ uses
\t at st@ic which sets \maybe at icfalse. Testing afterwards with
\if at tempswa doesn't make sense. 

\documentclass[10pt]{article}
\usepackage{abbrevs}

\makeatletter
\newcommand\t at st@space{} %new
\def \t at st@space {%
 \expandafter\let\expandafter
\reserved at b\expandafter=\reserved at a\relax
  \ifx\reserved at b\@let at token
    \@tempswafalse
    \@break at tfor
  \fi
}
\renewcommand\maybe at space@ {%
  \@tempswatrue 
  \expandafter   \@tfor
    \expandafter \reserved at a
    \expandafter :%
    \expandafter =%
                 \nospacelist
                 \do \t at st@space %new
  \if at tempswa 
    \space
  \fi
}

\makeatother
\begin{document}

\newabbrev\pc{Personal computer (PC)}[PC]

{\pc}abc {\pc}abc \pc abc

\end{document}





-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/