Thank you for your reply. I would never have thought of trying that. I didn't even realise you could use a quantifier on a code block. Doing that along with re debug shows that the code block doesn't execute at the first and successful match but at the second retried match when the engine realises that, although successful, it has already been here before. I wonder why the non-greediness doesn't hold the second time around.

Exploring quantifiers with code blocks could be very interesting.

$ perl -le '
> $str = q{abc};
> $str =~ m{(b)(?{print qq{Match $1}}){3}};'
Match b
Match b
Match b
$

[download]

Thanks again,

JohnGG

In reply to Re^2: Regex code block executes twice per match using look-arounds by johngg
in thread Regex code block executes twice per match using look-arounds by johngg

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