Error and warning messages are listed in perldiag.
Each has a more verbose description: such as that shown by ++choroba in the first response you received.
As a debugging aid, you can use the diagnostics pragma.
[Note: this also documents "The splain Program".]
Use something like this near the top of your script:
use strict;
use warnings;
use diagnostics;
This pragma is a developer tool. Its output, which can be quite lengthy, is generally not suitable for end-users (too long, too technical, etc.) and it can swamp log files (messages you really want to see can become lost amongst all this verbiage).
My general advice is:
-
Only use this pragma while you are learning and having difficulty understanding the terse, one-line messages.
-
Remove the 'use diagnostics;' line from production code.
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