From: Greg Ditrick <gditrick@...>
Date: 2010-11-10T02:14:27+09:00
Subject: Re: bug in ruby 1.9.2-p0 gsub?

---- Sd He <sdhays@gmail.com> wrote: 
> Why does the following only replace the first instance of the pattern?
> 
> '|\ |\ |'.gsub(/|\ |/, "||")

Because "\ |" will not match "|\ |".

If you had made it '|\ ||\ |', both will be replaced and you would have had "||||"

-GregD