[BUG] Crash when evaling questionmark-backslash-newline

[Stephen J. Turnbull]

Dominique Quatravaux writes:

 > Ping?

Patches welcome.  Otherwise you'll have to wait until somebody gets to
it.  "Nobody here but us volunteers."  And not very many of them at
the moment.

By the way, I strongly recommend that you post using M-x
report-xemacs-bug, as that will automatically be fed into the issue
tracker where it won't get lost.