I posted earlier that regex::assemble wouldn't help with your problem, because it's "regex or" not "regex and". But it now occurs to me that in your particular situation, it might help -- efficiency wise. Because you are looking for a regex that does not match several regexes. And actually, in boolean logic that is the same as a does not match "regex1 or regex 2 or regex3". So before you wound up with something like 
(?!regex1)(?!regex2)(?!regex3)

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But you could use regex::assemble to do 
my $andedRegexes = Regexp::Assemble->new;
  $andedRegexes->add( 'regex1' );
  $andedRegexes->add( 'regex2' );
  $andedRegexes->add( 'regex3' );
#regex is now 'regex(1|2|3)'
#which is more efficient

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and then do a negative lookahead on that. I'm not sure of the quoting syntax here though. 
$negatedAndedRegexes = (?=qr($andedRegexes))

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Actually I'm pretty sure that's wrong syntax. But you get the idea.

(Could someone correct that?)

Hope this helps!

Thomas.

In reply to Actually, regex::assemble would help! by tphyahoo
in thread Regex AND by ady

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