From: 7stud -- <bbxx789_05ss@...>
Date: 2011-02-26T06:17:02+09:00
Subject: Re: define_method(): why is the method unable to see $1?

An online copy of Programming Ruby  all the match variables are local to 
the current scope:

http://webcache.googleusercontent.com/search?q=cache:TH-QZKH6TfsJ:phrogz.net/programmingruby/language.html+scope+of+ruby+match+variables&cd=3&hl=en&ct=clnk&gl=us&client=firefox-a&source=www.google.com

Here is a simpler example showing that trait of $1:

def meth_a
  "a" =~ /(.)/
   puts $1
end

meth_a

puts "-->#{$1}<---"

--output:--
a
---><---

So, Eric Christoperson was right: $1 is a local variable.

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