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In some situations, errors reported by `perl -c` can have multiple listings of "at <file> line <number>". If the l:pattern is changed to use non-greedy matching it will also match these. For example: ``` use strict; use DateTime; $asdf=1; ``` Results in: ``` Global symbol "$asdf" requires explicit package name (did you forget to declare "my $asdf"?) at /Users/mgrimes/t.pl line 3, <DATA> line 1. /Users/mgrimes/t.pl had compilation errors. ``` I am not 100% sure why `perl -c` generates errors with the extra "file line <num>". It only happens in some versions of perl when certain modules are used.