Is the right answer. It's not a real continuation because squirreling away a copy of the sub-reference $fred in, say, a package-global variable $Jane and calling $Jane later doesn't do what a real call-cc would allow you to do.
use vars qw{$Jane};
print call_cc {
my $fred = shift;
$Jane = $fred; # Squirrel away a reference
$fred->(42);
64; #NOTREACHED
};
print "\n";
# And then call it later, outside the call_cc block...
$Jane->(101); #bang.
Results in... you guessed it, an uncaught exception. So it's just an ersatz call-cc.
Funnily enough, call-cc is used in Scheme-like languages a lot for early exits from deep/non-deterministic recursions despite also having a try/catch-style mechanism.
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