Everyone's answers to my first question on using regexes to remove blank lines were very helpful. Unfortunately, I have this new and annoying problem: when I do anything akin to 
$lines =~ s/\n\n/\n/gms;

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only the last occurance of \n\n in the file is changed; the rest of the blank lines stay the same.

Is there a Perl explanation for this, or do I just have to beat my computer with a stick?

In reply to another problem with the blank line regex by amarceluk

Title:
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