B::FindAmpersand - A compiler backend to find variables that set sawampersand
perl -MO=FindAmpersand file.pl
The Devel::SawAmpersand can tell you if Perl has set
sawampersand, but it doesn't tell you where. Sure, you can grep, but what if you don't know where to grep?
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.