Use of $\hat$ in @tex

[Kevin Ryde]

Using texinfo.tex version 1999-09-25.10 and the Debian texinfo 4.0 and
recent tetex, I noticed that putting the document below through
texi2dvi puts the caret over a blank space and the "q" as the next
character, unaccented.

Other accents like \vec or \widehat work, as does an explicit
\mathaccent"705E.  Is texinfo.tex redefining \hat?  It'd be good if it
could work in math mode too.

foo.texi
Description: application/texinfo