Altering the Return Value: Prewrappers

        $return = bless sub {$prereturn=1}, 'Hook::LexWrap::Cleanup';
        my $dummy = $wrapper{pre}->(@_, $return) if $wrapper{pre};

• But wait

• What about:

        In a pre-wrapper, $_[-1] is -- for obvious reasons -- undef. 

• Since $return is a blessed subroutine, why does the prewrapper see undef?

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Copyright © 2003 M. J. Dominus