If I have a script that "uses" multiple Perl modules, and I know that a function named f was imported from one of them, i.e. it was not defined in the script itself

Don't do that. Be explicit about what you import.

use Coneheads qw( GnarfleTheGarthock );

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In reply to Re: Which module contains an imported subroutine by runrig
in thread Which module contains an imported subroutine by john.deighan

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