There is a good chance that you would want to escape $input so that special regex characters match exactly, rather than taking on their special meaning.

my @bintext2 = grep { /\Q$input\E/i } @bintext;

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This way things like "*", "+", and "-" match literally.

Good Day,
    Dean

In reply to Re: GREP case insensitivity by duelafn
in thread GREP case insensitivity by italiansauce88

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