Re^2: balanced parens regexp hangs

in reply to Re: balanced parens regexp hangs
in thread balanced parens regexp hangs - solved

I run it on WinXP with ActiveState Perl v5.10.0. (build 1004).

Localizing helped solving my problem, but I removed non-greed and tried to use (?>...)* but I must admit I don't fully understand documentation of this construct yet. Did you think about something like this?

local $parens = qr{(?:(?>[^{}]*)|\{(??{$parens})\})*}x;
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Re^3: balanced parens regexp hangs by moritz (Cardinal) on Mar 27, 2009 at 09:07 UTC
Actually I meant `(?>(?>[^{}])\|\{(??{$parens})\})`, since I don't see a reason why any of these groups should ever give up something that they successfully matched. For an explanation of `(?>...)` see How backtracking works in regular expressions and Avoiding regex backtracking.	[reply] [d/l] [select]
Re^4: balanced parens regexp hangs by grizzley (Chaplain) on Mar 27, 2009 at 10:10 UTC
I agree. Thanks again!	[reply]

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