From: Yui NARUSE <redmine@...>
Date: 2010-06-07T16:00:57+09:00
Subject: [ruby-core:30633] [Backport #3402] A bug related to ruby's regular expression!!!!!!

Backport #3402: A bug related to ruby's regular expression!!!!!!
http://redmine.ruby-lang.org/issues/show/3402

Author: Yui NARUSE
Status: Assigned, Priority: Normal
Assigned to: Shyouhei Urabe, Category: core, Target version: Ruby 1.8.7

Backport r28192

I found a bug related to ruby's regular expression!
puts(/wo{0,3}?/.match("woo"))
This line of code should show a "w" on the screen, but my ruby shows "wo" on then screen.
According to the principles of regular expression, this is a non-greedy match, so it should match 0 "o", but it matches at least 1 "o". I think this is a bug!
I also tried this in the javascript language, it works well!("w" is shown)

My ruby version is v1.8.7-p249.


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