But I thought the "not stay shared" error is because the closure stuff is triggering on a named subroutine (usually inside another one). Is that not being closed on the first invocation, and subsequent invocations creating different lex vars?

And, on a completely different note, is this not a named closure?

my $coderef = do {
  my $counter = 0;
  sub { ++$counter };
};
*named_closure = $coderef;
[download]

That looks like I can call named_closure() to me, and it's a named closure.

Perhaps that's not what

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

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