[texhax] Clash between \emph and \xspace [corrected, improved]

[Philip G. Ratcliffe]

> > Moreover, there is no problem with the following commands: 
> > \MakeUppercase, \MakeLowercase, \textcolor ("color" package).
> > 
> 
> Thanks for this information.
> Is it from empirical tests or did you look at the code?

Both!

Cheers,  Phil