Just a little comment that you can use embedded pattern match modifiers in your regular expression.

$pattern = "foobar";
if ( /$pattern/i ) { }

# equivalent to the more flexible form of
$pattern = "(?i)foobar";
if ( /$pattern/ ) { }

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In reply to Re: qr and substitution by Roger
in thread qr and substitution by jplindstrom

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