From: Jim Weirich <jim@...>
Date: 2007-11-02T04:20:23+09:00
Subject: Re: regex question

Robert Keller wrote:
> I have a string = "this is text that    I   want to 9 9.90  89 9 ii8 u"
> 
> using str = string.gsub(/(?!\d)\b\s\b(?!\d)/,'-')
> 
> i get "this-is-text-that    I   want-to 9 9.90  89 9-ii8-u"
>                                                     ^   ^
> 
> there problem is that I do not want the "-" to show up if the last char 
> is a digit or the first chat is a digit.  Got real close, but I think I 
> need lookbehind which is not supported in ruby?

Is this what you want:

    str.gsub(/([^0-9])\b\s\b([^0-9])/) { "#$1-#$2" }

-- Jim Weirich
-- 
Posted via http://www.ruby-forum.com/.