Hi Laurent, I've filed a ticket. I'm not aware of any library that is affected by this currently. The regex I was using matches 4 digits that represent a year, but excludes things like '22010' and '20100', I've avoided the bug by using a positive-lookahead instead (?=\D). Alan On 22 Dec 2010, at 03:30, Laurent Sansonetti wrote:
Hi Alan,
Thanks for the report. Please file a ticket: http://www.macruby.org/trac/newticket
Do you happen to know if a ruby library makes use of this? It can help us screen the priority of this bug.
Thanks :) Laurent
On Dec 21, 2010, at 2:01 PM, Alan Skipp wrote:
When combining negative look-ahead with look-behind in a regexp, macruby doesn't match correctly. Here's an example.
ruby 1.9.2
m = "abc123abc".match /(?<=\w) (\d{3}) (?!\d)/x => #<MatchData "123" 1:"123"> m.to_s => "123"
macruby (0.9)
m = "abc123abc".match /(?<=\w) (\d{3}) (?!\d)/x => #<MatchData "" 1:"123"> m.to_s => ""
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