From: Tanaka Akira <akr@...>
Date: 2009-12-03T07:46:40+09:00
Subject: [ruby-core:27004] Re: [Bug #2422] splat operator fails on array of 1 	element

On Thu, Dec 3, 2009 at 2:35 AM, Raul Parolari <redmine@ruby-lang.org> wrote:
> Bug #2422: splat operator fails on array of 1 element
> http://redmine.ruby-lang.org/issues/show/2422

> In Ruby 1.9.1:
>
> a, b = *[ 137, 271 ] �# �a = 137; b = 271 �# (as expected)
>
> a � �= *[ 137 ] � � �# a = [137 ] � # �(should be 137 !)

The Ruby 1.9 behavior is simplified and more consistent.

% ruby -ve '
a = *[1,2,3]; p a
a = *[1,2]; p a
a = *[1]; p a
a = *[]; p a'
ruby 1.9.2dev (2009-09-24 trunk 25067) [i686-linux]
[1, 2, 3]
[1, 2]
[1]
[]

% ruby-1.8 -ve '
a = *[1,2,3]; p a
a = *[1,2]; p a
a = *[1]; p a
a = *[]; p a'
ruby 1.8.8dev (2009-10-15 revision 25343) [i686-linux]
[1, 2, 3]
[1, 2]
1
nil

Ruby 1.9 doesn't handle zero or one element array specially.
-- 
Tanaka Akira