From: "Xavier Noëlle" <xavier.noelle@...>
Date: 2010-01-25T18:24:58+09:00
Subject: Re: how to represent a single backslash?

irb(main):001:0> puts "\\"
\
=> nil
irb(main):002:0> puts '\\'
\
=> nil

There is a difference between what is written in your code and what
the output will be.
"\\" is not the same as "\", which is why irb prints the string
constant as you entered it. But if you print it, it will output what
you expected, i.e. a backslash.

-- 
Xavier NOELLE