[ruby-core:81253] [Ruby trunk Bug#13337] Eval and Later Defined Local Variables

Issue #13337 has been updated by ko1 (Koichi Sasada).


This is specification.

(1) parse `example` method and define `foo`.
(2) In `eval` method, compile given string (`"foo"`) and defined `foo` was used (without any problem).

So it is documentation issue.
Can anyone write about it?


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Bug #13337: Eval and Later Defined Local Variables
https://bugs.ruby-lang.org/issues/13337#change-64914

* Author: faraz (Faraz Yashar)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 2.4.0
* Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
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I've noticed the following behavior with eval:

~~~ ruby
def example
  eval("foo") # => nil, but would expect a NameError
  eval("bar") # => NameError
  foo = 1
end
~~~

I'm assuming this behavior is expected, since "eval" executes in the context of the existing YARV instructions and local table, but I'm not certain since I haven't seen this behavior documented anywhere. 



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