The documentation of that feature is too curt and the code is withstanding my attempts to understand it in a hurry. How does one employ that?

Makeshifts last the longest.

you just push there the names of the packages you want to skip when calling carp, croak, etc.

For instance:

#!/usr/bin/perl

package Foo;
sub foo { Bar::bar() }

package Bar;
use Carp;
our @CARP_NOT = qw(Foo);
sub bar { croak "hello" }

package main;
Foo::foo();
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prints...

hello at /tmp/t.pl line 12
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