# [texhax] Upright digits in theorems

Alex Scorpan scorpan at gmail.com
Tue Jun 6 16:11:10 CEST 2006

What is the most elegant and robust way to arrange that digits and
such always display upright inside a theorem-like environment, when
the surrounding text is italic?  This is for a rather large-scale
application.

Our current approach is to make the various characters active inside
the theorem environment and define them as \textup{...}.  However,
that creates problems if anybody uses, say, a label with a digit or a
\vskip or whatever.

-- Alex