Re: Multiple regexs into single combined regex using lookaheads

#!/usr/bin/perl

use strict;
use warnings;

for (<DATA>) {
    chomp;
    print "Match: $_\n" if /^(?=.*name=bob)(?!.*flags=.*?cat.*?;)/;
}

__DATA__
name=bob;flags=human;age=10
name=tiddles;flags=cat,black;age=3
name=bob;flags=cat,white;age=6
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Re^2: Multiple regexs into single combined regex using lookaheads by mxb (Pilgrim) on Apr 17, 2018 at 08:10 UTC
Ahh! I see you've added `.*` before each match. Many thanks for the working example. Am I correct in thinking that both lookaheads must be anchored in the same position (which is `^` in the example above?) Because they are both anchored at the start of the string, each lookahead can match multiple of any character before the string I'm looking for (e.g. `name=bob`) as this allows each lookahead to 'seek' forward independently, and succeed at a different point in the string?	[reply] [d/l] [select]
Re^3: Multiple regexs into single combined regex using lookaheads by AnomalousMonk (Archbishop) on Apr 17, 2018 at 15:09 UTC
In answer to your two questions: yes and yes. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l]