From: MonkeeSage <MonkeeSage@...>
Date: 2006-10-03T10:20:11+09:00
Subject: Re: regular expressions

Tom Allison wrote:
> I'm only trying to get the one section that matched the Received header.
> I should be able to do with with the statement
> puts line if line =~ /Received/ .. line =~ /#{config['hostname']}/
> At least that's what I'm believe I'm being led towards.

In ruby .. is a range operator. If you want a grouped match, use parens
and a backreference just like perl.

$stdin.each { |line|
  puts $1 if line =~ /^Received:(.+?)\s{4,}by #{config['hostname']}/
  # prints " from mail.papa.smurf (mail.papa.smurf [127.0.0.1])"
}

Regards,
Jordan