From: Yukihiro Matsumoto Date: 2011-06-14T00:25:48+09:00 Subject: [ruby-core:37096] [Ruby 1.9 - Bug #4559] Proc#== does not match the documented behaviour Issue #4559 has been updated by Yukihiro Matsumoto. I am not satisfied with the current behavior. Two proc objects should equal either * when two proc objects are the same (identical) object (as 1.8 does). * or when two proc objects share same body (as documented). The 1.9 behavior is half-baked, and I think it should be fixed. I don't say which way to go. It's up to the maintainer (ko1, you). matz. ---------------------------------------- Bug #4559: Proc#== does not match the documented behaviour http://redmine.ruby-lang.org/issues/4559 Author: Adam Prescott Status: Assigned Priority: Low Assignee: Yukihiro Matsumoto Category: DOC Target version: 1.9.x ruby -v: ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux] =begin To see a paste concisely showing the problem, see https://gist.github.com/899026/ba84d66b02727675320dc4f031637d753a41c209 Code is shown below for 1.9.2p180. The documented behaviour (and my own expectation for (({#==}))) is: "Return true if prc is the same object as other_proc, or if they are both procs with the same body." RUBY_DESCRIPTION #=> ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux] proc { 1 } == proc { 1 } # => true proc { 1 + 1 } == proc { 1 + 1 } # => false proc { |x| x } == proc { |x| x } # => true proc { |x| x.foo } == proc { |x| x.foo } # => false lambda { 1 } == lambda { 1 } # => true lambda { 1 + 1 } == lambda { 1 + 1 } # => false lambda { |x| x } == lambda { |x| x } # => true lambda { |x| x.foo } == lambda { |x| x.foo } # => false Proc.new { 1 } == Proc.new { 1 } # => true Proc.new { 1 + 1 } == Proc.new { 1 + 1 } # => false Proc.new { |x| x } == Proc.new { |x| x } # => true Proc.new { |x| x.foo } == Proc.new { |x| x.foo } # => false Similar also occurs on 1.8.7; on version 1.8.7 (2011-02-18 patchlevel 334), all returned values are (({false})). I also reproduced this behaviour on 1.9.2p136 (2010-12-25 revision 30365) [i686-linux]. Attached is a file which will (({puts})) the values. =end -- http://redmine.ruby-lang.org