From: Florian Gross <flgr@...>
Date: 2004-07-10T19:32:29+09:00
Subject: Re: Anomoly using pattern to remove superfluous final \, if present

Moin!

Richard Lionheart wrote:

>>In your case I'd prefer
>>s.sub!( /\\\\\z/, '\\' )
> I assume "z" is a typo for "$" and I further assume that using pattern
> matching is much less efficient than directly "chopping" (though the
> difference is imperceptible for the amount of data usually processed by
> scripting languages.)

\z is the very end of a String. It will always match after the last 
character of a String.

$ is the end of a line. It will match before any \n character.

There's also \Z which is the end of a String. It will match if you are 
at the end of the String or before a \n that is at the end of a String.

Regards,
Florian Gross