While reading new Potter, I've noticed a few cases of double contractions.
"Well, what's so impressive about that?' whispered Ron, who for some reason looked annoyed. 'You are the best in the year -
I'd've told him so if he'd asked me!' "
"Tha's -tha's righ' nice of him, tha' is, an' not turnin' you in, either. I've never really had a lot ter do with Horace Slughorn before ... comin' ter see old Aragog off, though, eh? Well ...
he'd've liked that, Aragog would ...'"
Second paragraph is full of contractions, so this double one is not that extraordinary. But still, in both cases they look weird and that's the first time I've ever seen them (or, at least, noticed). Are they allowed; are they used at all?
Jarek
http://hell.pl/agnus/
fewterer - A keeper of dogs or manager of a kennel