From: "charliesome (Charlie Somerville)" <charliesome@...>
Date: 2013-08-02T17:56:45+09:00
Subject: [ruby-core:56329] [ruby-trunk - Bug #8722][Assigned] Refinements remain active beyond the end of an evaled string


Issue #8722 has been reported by charliesome (Charlie Somerville).

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Bug #8722: Refinements remain active beyond the end of an evaled string
https://bugs.ruby-lang.org/issues/8722

Author: charliesome (Charlie Somerville)
Status: Assigned
Priority: Normal
Assignee: shugo (Shugo Maeda)
Category: 
Target version: 
ruby -v: ruby 2.1.0dev (2013-08-02 trunk 42320) [x86_64-darwin12.4.0]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


=begin

The [[RefinementsSpec]] states:

"When main.using is invoked in a string given as the first argument of Kernel#eval, Kernel#instance_eval, or Module#module_eval, the end of the scope is the end of the string."

However, in this example script, String#upcase remains refined even after the call to eval() has finished:

  module M
    refine String do
      def upcase
        reverse
      end
    end
  end
  
  puts "hello world".upcase
  puts eval(%{using M; "hello world".upcase})
  puts "hello world".upcase

I would expect the output of this script to be:

  HELLO WORLD
  dlrow olleh
  HELLO WORLD

Instead it is:

  HELLO WORLD
  dlrow olleh
  dlrow olleh

=end


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