I was thinking it would be even better (feeping
creaturism, here we go) if you could have a list of strings to be matched. So instead of
entering just one, you could enter N strings, maybe 1 per line, and watch the regexp
match them at the same time.
I agree, and this idea appears in my original notes for the regex debugger.
I will be releasing the code for the back-end after I
give my talk about it at TPC5,
and I hope the result will be that several people implement
free regex debuggers and that at least one of them
has this feature.
The paper is online, should you want to read it.