comment on

Many problems:

You have an unescaped / in the regexp. Maybe you should use m{...} instead of /.../.
There's a | missing in the regexp.

The regexp would be more readable if you used the x option and added whitespace.

if (!
   m{
      foo
   |
      bar
   |
      baz
   }x
) {
   ...
}
[download]

$_ ne /.../ should be $_ !~ /.../, !($_ =~ /.../) or just !/.../.
You read the file a line at a time, yet you have no flag telling you if you're in the middle of a multi-line /*...*/ comment.
Why do you accumulate the text in $out instead of printing as you go along?

In reply to Re: inserting string only once after matching a pattern by ikegami
in thread inserting string only once after matching a pattern by Anonymous Monk

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