From: Marc-Andre Lafortune <ruby-core@...>
Date: 2011-12-01T20:16:06+09:00
Subject: [ruby-core:41431] [ruby-trunk - Bug #5694][Open] Proc#arity doesn't take optional arguments into account.


Issue #5694 has been reported by Marc-Andre Lafortune.

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Bug #5694: Proc#arity doesn't take optional arguments into account. 
http://redmine.ruby-lang.org/issues/5694

Author: Marc-Andre Lafortune
Status: Open
Priority: Normal
Assignee: Marc-Andre Lafortune
Category: core
Target version: 2.0.0
ruby -v: r33920


Currently:

    ->(foo = 42){}.arity # => 0, should be -1

This is contrary to the documentation and to what we should expect from the equivalent method definition.

Fixed in trunk, requesting backport for the 1.9 line.



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