From: Gilbert Rebhan <mailforgilbert@...>
Date: 2007-09-22T19:35:04+09:00
Subject: Re: regex problem with gsub

Hi,

Sebastian Hungerecker wrote:
> Gilbert Rebhan wrote:
>> str=File.basename(Dir["J:/test/*.xml"].sort[0]).gsub(/(\w{8}).+/, $1)
> 
> At this point $1 is nil, which is why you get the error. You have to keep in 
> mind that arguments are evaluated before the method is called and $1 will 
> only have value after that. You need to use '\1' instead of $1.

Thanks!!
Works now. I'm still not sure, when to use \1 and when to use $1

Regards, Gilbert