[ruby-dev:50719] [Ruby trunk Bug#15437] 正規表現の名前付きキャプチャでASCII以外の大文字で定義したクラスが上書きされる
From:
hanachin@...
Date:
2018-12-19 20:30:46 UTC
List:
ruby-dev #50719
Issue #15437 has been reported by hanachin (Seiei Miyagi). ---------------------------------------- Bug #15437: 正規表現の名前付きキャプチャでASCII以外の大文字で定義したクラスが上書きされる https://bugs.ruby-lang.org/issues/15437 * Author: hanachin (Seiei Miyagi) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.6.0rc2 (2018-12-15 trunk 66408) [x86_64-linux] * Backport: 2.4: UNKNOWN, 2.5: UNKNOWN ---------------------------------------- ASCIIの大文字で定義したクラスは正規表現の名前付きキャプチャで上書きされませんが、ASCII以外の大文字で定義したクラスは上書きされてしまうようです。 これは意図的ですか? ```rb # rewrite_constant_by_named_capture.rb class C end /(?<C>C)/ =~ "C" p C class 𝐂 end /(?<𝐂>𝐂)/ =~ "𝐂" p 𝐂 C.new 𝐂.new ``` ``` % ruby -v rewrite_constant_by_named_capture.rb ruby 2.6.0rc2 (2018-12-15 trunk 66408) [x86_64-linux] C rewrite_constant_by_named_capture.rb:11: warning: already initialized constant 𝐂 rewrite_constant_by_named_capture.rb:8: warning: previous definition of 𝐂 was here "𝐂" Traceback (most recent call last): rewrite_constant_by_named_capture.rb:16:in `<main>': undefined method `new' for "𝐂":String (NoMethodError) Did you mean? next ``` -- https://bugs.ruby-lang.org/