From: "Wolfgang Nádasi-Donner" <ed.odanow@...>
Date: 2007-11-18T08:14:28+09:00
Subject: Re: String escape mystery.

Rick Denatale wrote:
> On Nov 17, 2007 5:52 PM, Stefan Rusterholz <apeiros@gmx.net> wrote:
>> >
>> > http://talklikeaduck.denhaven2.com/
>>
>> Hu?
>> I fail to see what exactly is your problem. \b is backspace, so the a
>> becomes deleted in the output. In the inspect of course it still shows
>> up. \\ is a literal \ and that is followed by a c, so "\\c" naturally
>> prints as \c
>> Did I miss your point or so?
> 
> 
> No it was just a brain fart on my part.
> 
> 
> --
> Rick DeNatale
> 
> My blog on Ruby
> http://talklikeaduck.denhaven2.com/

Please take a look at...

irb(main):001:0> "a\b\c""
=> "a\b\002"

...and the documentation in 
http://www.ruby-doc.org/docs/ProgrammingRuby/html/language.html in 
"Basic Types", subchapter "Strings" is a table...

Substitutions in double-quoted strings

\a   Bell/alert (0x07)   \nnn   Octal nnn
\b   Backspace (0x08)   \xnn   Hex nn
\e   Escape (0x1b)           \cx   Control-x
\f   Formfeed (0x0c)   \C-x   Control-x
\n   Newline (0x0a)      \M-x   Meta-x
\r   Return (0x0d)           \M-\C-x Meta-control-x
\s   Space (0x20)           \x   x
\t   Tab (0x09)           #{expr} Value of expr
\v   Vertical tab (0x0b)

...which explains everything in detail.

Wolfgang Nádasi-Donner
-- 
Posted via http://www.ruby-forum.com/.