A comma in the range is useful if you are matching something after the sequence, or if you are using capturing parenthesis to save the matched sequence. If you only want to match sequences of 10 and not longer, you would need a negative-lookahead (see perlre) after the {10}.

In reply to Re: Re: Re: Re: Re3: BioInformatics - polyA tail search by runrig
in thread BioInformatics - polyA tail search by MiamiGenome

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