While I do not know the answer to your current question, I do think your code is irreparably broken as long as you insist on using eval like that. BrowserUK gave a very good suggestion here to invoke the operators using a dispatch table (a hash of function references, each taking two arguments). You should incorporate that into your code.

In reply to Re: match search string with column header, do some filtering with matched column, print lines/rows that match filter criteria by Anonymous Monk
in thread match search string with column header, do some filtering with matched column, print lines/rows that match filter criteria by dkhalfe

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