Josh Jore gives instruction in use.perl.org.

Subsequently (I think), he turned this into his Perl Module on CPAN App::Stacktrace.

I recently created a fork of that from Jore's github repository to add the kind of frame in the display — sub, eval, or FORMAT. I would like to include the subroutine name for sub and don't know how to. And that's how I stumbled across this query.

So sorry if it's a little late.