Bug #1926: Different eval/binding behaviour in 1.9

• Status: Rejected
• Assignee: ko1 (Koichi Sasada)
• Target version: 1.9.2
• ruby -v: ruby 1.9.2dev (2009-07-18 trunk 24186) [i686-linux]

[candlerb (Brian Candler)]

=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

[yugui (Yuki Sonoda)]

• Target version set to 1.9.2

=begin

=end

[ko1 (Koichi Sasada)]

• Status changed from Open to Rejected
• Assignee set to ko1 (Koichi Sasada)

=begin
Not a bug. Binding spec is changed from 1.8.
=end

[shreeve (Steve Shreeve)]

Given this change, what is the proper method of setting a local variable in a specific binding?

[trans (Thomas Sawyer)]

I guess you don't.