From: "trans (Thomas Sawyer)" Date: 2012-04-28T09:20:21+09:00 Subject: [ruby-core:44711] [ruby-trunk - Feature #6372] More specific error for uncaught throw Issue #6372 has been updated by trans (Thomas Sawyer). I know right? You would think that would work. But... refute(:a.thrown?{ throw :b }) Fails. I think that's why this has been tricky for me to get right. ---------------------------------------- Feature #6372: More specific error for uncaught throw https://bugs.ruby-lang.org/issues/6372#change-26272 Author: trans (Thomas Sawyer) Status: Feedback Priority: Normal Assignee: matz (Yukihiro Matsumoto) Category: core Target version: 1.9.3 I have this method: =begin class Symbol # Does the block throw the symbol? # def thrown? catch(self) do begin yield true rescue ArgumentError => err # 1.9 exception false rescue NameError => err # 1.8 exception false end end end end =end But it was recently pointed out to me that the rescue of ArgumentError and NameError is not good enough b/c they might rescue an unrelated error of the same type. So to make this right there needs to be a more specific error. Perhaps `class ThrowError < ArgumentError`. -- http://bugs.ruby-lang.org/