From: thefed <fedzor@...>
Date: 2008-01-01T02:59:21+09:00
Subject: Re: Detecting Arrow Keys


On Dec 31, 2007, at 3:34 AM, tho_mica_l wrote:

>> Hmm... Something's not right here... Why are they all the same?
>
> Cursor keys on the terminal are most often sent as a sequence of three
> characters:
>
> 27, '[', 'A' ... up
> 27, '[', 'B' ... down
> 27, '[', 'C' ... right
> 27, '[', 'D' ... left
>
> 27 is escape.
>
> I don't know why you'd want to check for cursor keys but if it's for
> line editing you're probably better of with using a library that
> already does this. I'm not 100% sure but Highline (http://
> highline.rubyforge.org/) might be of help here.

hehe I use highline regularly, and so far, I do not know of any way  
to emulate history with it, or detect arrow keys.

But, in short, does this mean that there is no way to detect the  
arrow keys?