From: Yukihiro Matsumoto <matz@...>
Date: 2009-08-05T13:55:55+09:00
Subject: Re: Bizarre Range behavior

Hi,

In message "Re: Bizarre Range behavior"
    on Wed, 5 Aug 2009 05:32:37 +0900, Rob Biedenharn <Rob@AgileConsultingLLC.com> writes:

|Knowing this, here's an even more bizzare-looking example:
|
|irb> "19".succ
|=> "20"
|irb> ("2".."19").to_a
|=> []
|irb> ("2"..."20").to_a
|=> ["2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13",  
|"14", "15", "16", "17", "18", "19"]

What if I sprinkle more magic to the language and change String#upto
to generate numerical sequences when all characters in edges are
digits, so that

irb> ("2".."19").to_a
=> ["2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19"]
irb> ("2"..."20").to_a
=> ["2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20"]

Any opinion?  I already made a patch for trunk.

							matz.