Bug #3397: A bug related to ruby's regular expression!!!!!!

• Status: Closed
• Assignee: -
• Target version: Ruby 1.8.8
• ruby -v: r28169

[papaya (Tony Hsu)]

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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.
=end

[nobu (Nobuyoshi Nakada)]

• Category set to core
• Priority changed from 5 to Normal
• Target version set to Ruby 1.8.8
• ruby -v set to r28169

=begin

=end

[shyouhei (Shyouhei Urabe)]

=begin
Seems like a real bug to me.

zsh % ~/target/ruby_1_9_2/bin/ruby -ve 'puts(/wo{0,3}?/.match("woo"))'
ruby 1.9.2dev (2010-06-06 revision 28186) [x86_64-linux]
w
zsh % ~/target/ruby_1_8/bin/ruby -ve 'puts(/wo{0,3}?/.match("woo"))'
ruby 1.8.8dev (2010-06-05 revision 27061) [x86_64-linux]
wo

=end

[naruse (Yui NARUSE)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r28192.
Tony, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

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