From: Ryan Davis <ryand-ruby@...>
Date: 2012-06-28T05:36:00+09:00
Subject: Re: should $1 propagate through method calls?


On Jun 27, 2012, at 13:26 , Roger Pack wrote:

> Hello all.
> 
> 
> When running this snippet, I expected that, since $1 "looks" like a
> global variables, it would be propagated across method calls.  Should it
> be?

From the pickaxe, Variables and Constants:

$1 to $9

String

The contents of successive groups matched in a successful pattern match. In "cat" =~/(c|a)(t|z)/, $1 will be set to “a” and $2 to “t”. THIS VARIABLE IS LOCAL TO THE CURRENT SCOPE. [r/o, thread]

(emphasis mine)