From: "shreeve (Steve Shreeve)" <steve.shreeve@...>
Date: 2012-10-15T22:01:14+09:00
Subject: [ruby-core:48005] [ruby-trunk - Bug #1926] Different eval/binding behaviour in 1.9


Issue #1926 has been updated by shreeve (Steve Shreeve).


Given this change, what is the proper method of setting a local variable in a specific binding?
----------------------------------------
Bug #1926: Different eval/binding behaviour in 1.9
https://bugs.ruby-lang.org/issues/1926#change-30769

Author: candlerb (Brian Candler)
Status: Rejected
Priority: Normal
Assignee: ko1 (Koichi Sasada)
Category: 
Target version: 1.9.2
ruby -v: ruby 1.9.2dev (2009-07-18 trunk 24186) [i686-linux]


=begin
 In 1.8.6, you can set a local variable in a binding using eval. This doesn't seem to work in 1.9.2-preview1.
 
   def define_a(b)
     eval "a=1", b
   end
 
   define_a(binding)
   puts local_variables.inspect
   # 1.8: prints ["a"]
   # 1.9: prints []
 
 Similarly:
 
   def another_a(&blk)
     eval "a=1", blk.binding
     yield
   end
 
   another_a do
     puts local_variables.inspect
   end
   # 1.8: prints ["a"]
   # 1.9: prints []
=end



-- 
http://bugs.ruby-lang.org/