# [texhax] Clash between \emph and \xspace

Michael Barr mbarr at math.mcgill.ca
Sun Nov 5 00:06:40 CET 2006

Yes, that works fine.  Thanks.  The thing is that \emph also looks ahead
and this is what I meant by saying it seems to be a clash of uses of
\futurelet.

--MB

On Sat, 4 Nov 2006, Philip G. Ratcliffe wrote:

> > If you compile the following file:
> >
> > \documentclass{article}
> > \usepackage{xspace}
> > \newcommand{\lin}{Lindel\"of\xspace}
> > \begin{document}
> > (property we call \emph{amply \lin})
> >
> > (property we call {\it amply \lin})
> >
> > (property we call {\it amply \lin\/})
> > \end{document}
> >
> > you will see Goldilocks spacing after Lindel\"of''.  Since the
> > second is
> > one is much too close, you can see that it is not the case that \xspace
> > has added a space.  I assume that the problem is that both macros use
> > \futurelet.  Any suggestions?
>
> Well this seems ok:
>
> (property we call \emph{amply \lin{}})
>
> The problem with \xspace is that it looks at the following character, which
> is a problem if it appears at the end of an argument to some macro.  Sorry,
> I've nothing more to offer.
>
> Cheers,  Phil Ratcliffe
>