From: Bill Kelly <billk@...>
Date: 2005-01-20T03:52:04+09:00
Subject: Re: gsub and \\\\

From: "Florian Gross" <flgr@ccan.de>
> Bill Kelly wrote:
> 
> > I'm probably being dense, but - 
> > 
> >>>"ab\\cd".gsub(/\\/, "\\\\")
> 
> Here's the details, this comes up frequently:
> 
> ..gsub adds its own layer of escaping. \1 refers to the first match, \2 
> to the second and there is also stuff like \'. (In general those forms 
> are equivalent to global variables. E.g. \1 => $1)
> 
> Because Ruby's String literals already have one level of escaping you 
> have to escape everything two times which is confusing.

Argh!  Thanks....!!  I used to know this... :)


Regards,

Bill