From: James Edward Gray II <james@...>
Date: 2010-11-04T01:38:59+09:00
Subject: Re: UTF-8 aware chop for 1.8?

On Nov 3, 2010, at 11:33 AM, Ammar Ali wrote:

> On Wed, Nov 3, 2010 at 5:57 PM, James Edward Gray II
> <james@graysoftinc.com> wrote:
>> Well, it should be this simple:
>> 
>>  str.gsub(/.\z/mu, "")
> 
> On Wed, Nov 3, 2010 at 6:04 PM, Adam Prescott <mentionuse@gmail.com> wrote:
>>>> s.gsub(/^(.+)./u) { $1 }
>> => "one two thre"
> 
> 
> Beautiful. Thank you both.
> 
> It was a god exercise for me, so I don't necessarily feel that I
> wasted 30 minutes of my life :)
> 
> By the way, the m options seems superfluous in James' version. I get
> the same results without it.

It's not:

>> "\n".sub(/.\z/u, "")
=> "\n"
>> "\n".sub(/.\z/mu, "")
=> ""

Using gsub() over sub() was a dumb mistake on my part though.  sub() is all you need, since it can only match once.

James Edward Gray II