I was almost with this up to the regex /^(.*)\t(.*)$/. Can you post the working code, from which one can unambiguously reverse-engineer the requirement ?

When you say you are searching for a "given string", what do you mean ? Are you looking for lines in the file where the "block" before the tab exactly matches the given string ? or the given string as a sub-string of one, or either or both blocks ? or what ?

In reply to Re: performance issues by gone2015
in thread performance issues by perlcat

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