added test for 5.20 where regex should return more than one

[vanHoesel]

Sorry Dave...

now your tests fail under 5.20

maybe the slices.t should have a 5.20 check in it before

[vanHoesel]

sadly enough, I now have to ensure that I will do the correct thing with Tie::Hash::LanguageRange

[davorg]

Having had a quick look at this, I remember what the problem was and why it doesn't work.

FETCH is always called in scalar context - as it is only ever expected to return a single value. With a standard hash (actually a Tie::StdHash), if you call it as a hash slice (@hash{qw[foo bar]}) then FETCH is called twice - once for each key in the slice. But with Tie::Hash::Regex, a single call can, in theory, return multiple values (@hash(qw/./), for example should return all values from the hash), but Perl just doesn't expect that to be an option - so the tie interface just doesn't support it.

I remember wrestling with this when I first implemented the module. But at the time I just gave up (and pretended that the problem didn't exist - which is why there's no slice tests in the existing code).

I can't see any way around it. But I might run it past london.pm and see if anyone there can come up with anything.