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Postings from August 2012
rjbs wrote:
> Also, `when` should be valid inside an auto-topicalizing `while`, providing an
> implicit next, making its behavior more generic so that `when` can be used
> safely everywhere that it makes sense.
Please keep
while(<>)
and
while(defined($_ = <>))
equivalent.
Otherwise while<> would have to be deparsed as while<>, removing a useful feature of Deparse (finding out how perl is interpreting the while).
What do you want to do about this?
$ perl -E 'given(1) { for my $x (2) { break } } warn ok'
ok at -e line 1.
$ perl -E 'given(1) { for (2) { break } }'
Can't "break" in a loop topicalizer at -e line 1.
I think the best solution is to make when (and default) always do an implicit next. Also make given respond to next and last, just like a bare block. Deprecate break, but make it consistently exit the innermost given, without complaining about intervening frames.
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