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.
Mark Grimes