On Fri, May 12, 2023 at 11:11:23PM -0700, Jeremy Mates wrote: > A search for /\/ is okay; this discards the \ and searches for "/" > > A search for ?\? is not okay; this discards the \ and searches for "?" > which is an invalid regular expression, "RE error: repetition-operator > operand invalid". > > A problematic bare leading ? on a backwards search can be escaped by > the following, though I'm not sure if that's an ideal fix. Thoughts?
Have you tried using ?[\?] in extended mode? It works for me.