I would say that IMHO there are no trivial error messages: if compiler/interpreter complains, it is an error and must
be fixed before sending code into production. Warnings can be commented out until all the errors are resolved; then, if you have time, deal with small things... but errors should be fixed.
As for our own error reporting - that's for the "logical" errors that Perl cannot catch but they still lead to wrong results - yes, most definitely. That's the second thing I tend to do (after coding the functionality).
An idea is not responsible for the people who believe in it...
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