RE: RE-ASSOC: a question about the associativity of RE concatenation

["Donn Terry" <yyyyyy@xxxxxxxxxxxxx>]

I really do feel we need the existing practice data: no matter the
result
(consensus of implementation or not) I believe it will guide us.
Could I ask that one of the original proposers (or someone who really
understands this) create the testcases needed?  I think we can all
easily enough run them, but designing them is hard, even given the
very thorough discussions so far.  (And we also gain the benefit of
having all run the same test cases.)

Donn


From Andries:

One of the most important criteria for this choice is:
what do existing implementations do?
So far nobody has produced such data.

Andries