From: Ernie Miller <ernie@...>
Date: 2011-09-07T08:51:38+09:00
Subject: [ruby-core:39315] [Ruby 1.9 - Bug #5288][Open] Method#to_proc Procs have "sticky" bindings


Issue #5288 has been reported by Ernie Miller.

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Bug #5288: Method#to_proc Procs have "sticky" bindings
http://redmine.ruby-lang.org/issues/5288

Author: Ernie Miller
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 1.9.2
ruby -v: ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin11.1.0]


Please see the attached sample script (or view the gist at https://gist.github.com/1197634).

It would appear that a Proc object that is obtained via Method#to_proc behaves unlike other Procs when used with instance_exec. I'm not entirely sure that this is a bug so much as a gap in documentation, but I found it interesting, in either case, to note the subtle difference.

The summary:

A Proc object created by Method#to_proc doesn't actually allow instance_exec to modify "self" for the block. Sample output is provided in the comments of the attached script.

Thanks in advance!


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