I’m just trying to think of a rule by which this could be made consistent and non-surprising, but failing to. I suppose it would be okay to disambiguate the desired behaviour for lexicals on the presence of a my on the loop construct – but then what about globals? Should they always be aliased? I don’t like that – I’d definitely want parity here, else people are going to have to be taught about the subtlety that foreach behaves differently when given a global than when given a lexical. Maybe require foreach our $pkgvar to get aliasing for package variables? That would be strange, though, considering the actual semantics of our. And then what about $_ – do we leave it as a strange exception case?

Given that it would be so difficult to find sane semantics to support the non-aliasing behaviour, as well as that IME you want the aliasing behaviour 99.9% of the time, I think it’s clear why my preference is to just punt on this issue. I understand why you would prefer it otherwise, and I agree that it would be nice to have this behaviour, but I think there are just too many issues to untangle once you venture past the use case in your sample code.

Maybe TimToady could let this all stew for a while and come up with one of his trademark lucid decompositions, but I can’t think of anything more desirable than the current 80/20 solution.

Makeshifts last the longest.

In reply to Re^9: no chunk is too small by Aristotle
in thread Last undefines a for loop's itererator? by BUU

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