From: Shri Borde <Shri.Borde@...>
Date: 2009-02-06T03:10:03+09:00
Subject: [ruby-core:21866] Re: Bug with [:lower:]

Yes, my mistake.

-----Original Message-----
From: Yukihiro Matsumoto [mailto:matz@ruby-lang.org] 
Sent: Thursday, February 05, 2009 10:06 AM
To: ruby-core@ruby-lang.org
Subject: [ruby-core:21865] Re: Bug with [:lower:]

Hi,

In message "Re: [ruby-core:21863] Bug with [:lower:]"
    on Fri, 6 Feb 2009 02:56:40 +0900, Shri Borde <Shri.Borde@microsoft.com> writes:

|[:upper:] works as expected. [:lower:] matches incorrectly to an empty position at the start of the string. It's the same with both 1.8.6 and 1.9.

It's not a bug.  You've specified ZERO or more lower case letters, so
it matches CORRECTLY to an empty position at the start of the string.
You have to use + instead of *, if you want to match ONE or more lower
case letters.

							matz.