I've been thinking about this, too, prior to writing my $SIG{__DIE__} answer above.
*sigh*
Creating a sentinel object... slowly, the objectification creeps on every subject...

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^2: Execute function before exit of do() block by shmem
in thread Execute function before exit of do() block by gri6507

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