From: Xavier Noria <fxn@...>
Date: 2007-09-07T08:13:06+09:00
Subject: Re: Reg Ex

On Sep 7, 2007, at 12:58 AM, Charles Pareto wrote:

> I'm querying through the .com's looking for any www name with Cisco in
> it.
> I'm using a reg exp that is reading a file line by line obtained by
> Verisign that has all the domain names with a .com extension.
> Here is my reg exp:
>
> file.each { |line| print line if line =~ /(C|c)isco|CISCO/ }
>
> but I'm getting results like SanFrancisco and Francisco.
>
> Does anyone know how I can modify my reg exp to not include certain
> keywords like SanFrancisco and Francisco?

You need to assert word boundaries:

   /\b((C|c)isco|CISCO)\b/

-- fxn