From: Ryan Davis <ryand-ruby@...>
Date: 2011-08-11T07:33:31+09:00
Subject: Re: regex position error


On Aug 10, 2011, at 15:19 , Carlos Camargo wrote:

> I have a regular expression:
> Regexp.new(/^(\w+([-']\w+)*)(\ \w+([-']\w+)*)+$/)

Regexp.new(regexp) is the same as regexp. Don't wrap in Regexp.new for no reason.

> and I need to know the position of a invalid character.
> 
> For example, if a invalid character is a number, I can recover it using:
> "gisele bund9chen".index(/\d/)

/\d/ is to /[0-9]/ as /\D/ is to /[^0-9]/

> But, I need generalize the regular expression to find any a character
> different of \w, space \' and \-.

For more goodies see the regexp section of the ruby quickref.