s/$newline/$line/;

I think that's the offending line. $newline is parsed as a regex here, but it's an arbitrary string. Use s/\Q$newline\E/$line/ instead. (Or clean up your script.

BTW (\d|\d\d|\d\d\d) can be expressed as (\d{1,3}).

In reply to Re: Regex and Substitute issues by moritz
in thread Regex and Substitute issues by Flubb

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