Have solved problem but I dont understand why one lookahead works and another does not.

use strict;
use warnings;
use WWW::Curl::Easy;
my $curl = WWW::Curl::Easy->new;

$curl->setopt(CURLOPT_HEADER,1);
$curl->setopt(CURLOPT_URL, 'http://www.reddit.com/r/wallpapers.rss');
my $response_body;
$curl->setopt(CURLOPT_WRITEDATA,\$response_body);
# Starts the actual request
my $retcode = $curl->perform;
# Looking at the results...
if ($retcode == 0){
  print("Transfer went ok\n\n");
  my $response_code = $curl->getinfo(CURLINFO_HTTP_CODE);
   my @urls=$response_body =~ m{(http://b.thumbs.redditmedia\.com/(?:(
+?!png).)*?\.jpg)}gi;
  $" ="\n\n";
  print "@urls\n";
} else {
  # Error code, type of error, error message
  print("An error happened: $retcode ".$curl->strerror($retcode)." ".$
+curl->errbuf."\n");
}

[download]

Thank you all that helped.

In reply to Re^3: regex problem solved by grasshopper!!!
in thread regex problem by grasshopper!!!

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