Already demonstrated:
No, this example is not about recursion (although there is some).
Nope! Jump-labels only change each time with_return constructs are called to avoid confusion if they are dynamically nested.
That's what I told - they change each time you _call_ with_return, not each time you have with_return in code.

Here is example. Try do same with "goto"

use strict;
use warnings;
use Return::MultiLevel qw/with_return/;
sub rec
{
        my ($i, $return) = (@_, undef);
        $i++;
        print "i=$i\n";
        if ($i == 3) {
                with_return {
                        my $newreturn = shift;
                        rec($i, $newreturn);
                };
        }
        if ($i == 5) {
                 $return->() if $return;
        }
        if ($i == 7) {
                return;
        }
        rec($i, $return);
}

rec(0);

__END__

$ perl ml.pl 
i=1
i=2
i=3
i=4
i=5
i=4
i=5
i=6
i=7

[download]

In reply to Re^8: Continuations in Perl - Returning to an arbitrary level up the call stack by vsespb
in thread Continuations in Perl - Returning to an arbitrary level up the call stack by unlinker

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