From: shugo@... Date: 2015-05-28T08:03:35+00:00 Subject: [ruby-core:69389] [Ruby trunk - Bug #11182] [Feedback] Refinement with alias causes strange behavior Issue #11182 has been updated by Shugo Maeda. File alias_affected_by_original_refinement.diff added Status changed from Open to Feedback Assignee changed from Shugo Maeda to Koichi Sasada Koichi Sasada wrote: > With model (1), it seems C#foo will be called. > WIth model (2), it seems M::C#foo will be called. > > How about it? I agree that both models are possible and attached a patch implementing model (2). However, even in the selector model, alias need not to be affected by refinements of the original method as implemented in trunk, where alias creates a direct link to the original method instead of a link to its selector. I agree with Charles from past discussions. At least the behavior should not be changed in 2.2. ---------------------------------------- Bug #11182: Refinement with alias causes strange behavior https://bugs.ruby-lang.org/issues/11182#change-52665 * Author: Koichi Sasada * Status: Feedback * Priority: Normal * Assignee: Koichi Sasada * ruby -v: 2.3dev * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN ---------------------------------------- The following script causes strange behavior. ```ruby class C def foo p "C" end end module M refine C do def foo p "Refiend C" end end end class D < C alias bar foo end using M D.new.bar #=> t.rb:21:in `
': undefined method `bar' for # (NoMethodError) ``` It seems strange. Maybe (1) C#foo or (2) M#C#foo should be called. But I'm not sure which is suitable. Previous versions: ``` ruby 2.0.0p606 (2014-11-28 revision 48636) [i386-mswin32_110] t.rb:9: warning: Refinements are experimental, and the behavior may change in future versions of Ruby! "C" ruby 2.1.5p312 (2015-03-10 revision 49912) [i386-mswin32_110] "C" ``` ---Files-------------------------------- 1.PNG (38.7 KB) 2.PNG (43.7 KB) 4.PNG (38.5 KB) 3.PNG (37.9 KB) alias_affected_by_original_refinement.diff (1.34 KB) -- https://bugs.ruby-lang.org/