Here is another new thing then. To quote Dan Sugalski
about $1 etc in response to my claiming once that they
were local:
No they aren't. They're mutant pseudo-scalars attached to the underlying
optree, and you may well get a $1 from the last time you matched that
regex. (I've got a trivial program that shows the problem with a recursive
call)
(His "trivial program" causes threaded Perl to core-dump.)
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