If I put the for-loop back into the unrolled loop code, I start to see weird stuff again (still Strawberry 5.14.4.1): 

c:\@Work\Perl\monks>perl -wMstrict -le
"for my $string (qw(ab1b2b3b4d  ab5b6b7d  ab8b9d abxd ad)) {
   my @two;
   my @matches = $string =~ /(a)
                             (?: (b.) (?{ push @two, $2 }))+
                             (d)/x;
   print qq{'$string' -> all:(@matches) -> 2:(@two)};
   }
"
'ab1b2b3b4d' -> all:(a b4 d) -> 2:(b1 b2 b3 b4)
'ab5b6b7d' -> all:(a b7 d) -> 2:()
'ab8b9d' -> all:(a b9 d) -> 2:()
'abxd' -> all:(a bx d) -> 2:()
'ad' -> all:() -> 2:()

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What Perl version are you using?

Give a man a fish:  <%-{-{-{-<

In reply to Re^6: Regex troubles... by AnomalousMonk
in thread Regex troubles... by kepler

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