Here's an updated patch, which replaces the previous one.

It does everything the previous version did, but also correctly treats some
of the common pbs I saw yesterday, such as `\' and `C-\'. In fact, it just
allows _any_ character (except ') inside `...'.

Sorry about sending two patches. I don't expect to change this again.

  - Drew



From: Drew Adams [mailto:drew.adams@oracle.com]
Here's the patch to info.el that highlights `...' and "...".