Bug #3224: Regexp.new("...", nil, "n") is not documented

• Status: Closed
• Assignee: marcandre (Marc-Andre Lafortune)
• Target version: 1.9.2
• ruby -v: ruby 1.9.2dev (2010-04-30 trunk 27554) [x86_64-darwin10.3.0]

[marcandre (Marc-Andre Lafortune)]

=begin
While fixing the error messages for the number of parameters ( r27558 ), I noticed that Regexp.new accepts a third undocumented parameter.

Is it supported? If so it should be documented.

I also note that test_regexp.rb tests for the third parameter being "u", even though this has no effect. Maybe these tests should be removed?
=end

[shyouhei (Shyouhei Urabe)]

=begin
That third argument to Regexp.new was effective in 1.8, but no longer in 1.9. I'm not sure if that situation should be called supported.
=end

[mame (Yusuke Endoh)]

• Assignee set to marcandre (Marc-Andre Lafortune)

=begin
Hi,

As Shyouhei said, the argument is ignored. It left just for 1.8
compatibility.

Could you please add the fact into rdoc of Regexp#new and close
this ticket?

--
Yusuke Endoh [e-mail]

=end

[naruse (Yui NARUSE)]

=begin
3rd argument "n" and //n sets the regexp to NONE flag.

Regexp.new("aa", nil, "n") =~ "\u3042aa"
(irb):11: warning: regexp match /.../n against to UTF-8 string
=end

[naruse (Yui NARUSE)]

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

=begin
This issue was solved with changeset r27738.
Marc-Andre, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

=end