That looks like HTML. Don't parse HTML with regex, that way lies madness.

OK, with that out of the way, your match fails because the lookahead doesn't reset the pos. Include the right angle bracket and you're good to go.

use strict;
use warnings;

use Test::More tests => 1;

my $str = 'xxx<pre>xxx<www>xxx<strong>xxx';
like $str, qr/<(?!strong>)/, "Valid tag found";

[download]

But again, don't do this. Use an HTML parser. You'll thank me later. :-)

🦛

In reply to Re: perlre inverse check for several patterns by hippo
in thread perlre inverse check for several patterns by averlon

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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