problem with multiple comment syntax

[Dave Love]

Suppose you have a C-like language with /* and // comments but also
with # as a comment character.  (This is the case with PHP.)

After setting up the C comments, I'd expect to be able to set the
syntax of # to "<" or "< b" and have both # and // comments terminated
by newline.  If you do that, a comment started by # is never
terminated.  (// still works OK.)

It does work as expected in XEmacs using syntax "< b".