Path: utzoo!utgpu!watserv1!watcgl!andrewt
From: andrewt@watnow.waterloo.edu (Andrew Thomas)
Newsgroups: comp.sys.amiga
Subject: Re: DNET/FTERM and GNU-emacs
Message-ID: <ANDREWT.90Mar29083612@watnow.waterloo.edu>
Date: 29 Mar 90 13:36:12 GMT
References: <1990Mar27.153542.2577@iesd.auc.dk>
Sender: daemon@watcgl.waterloo.edu
Organization: University of Waterloo, Waterloo, Ontario, Canada
Lines: 53
In-reply-to: kasper@iesd.auc.dk's message of 27 Mar 90 15:35:42 GMT

In article <1990Mar27.153542.2577@iesd.auc.dk> kasper@iesd.auc.dk (Kasper Osterbye) writes:
> What I am wondering is, if any one has set up a configuration for GNU-emacs
> on the unix-side so that one can use the amiga function keys and cursor
> keys? (noone has touched the mouse in connection with DNet yet?)
> 
> Some of the problems I see, is that the function keys sends variable
> length characters ended with a "~" character, something that it is not
> obvious to me to have emacs handle gracefully.

GNU emacs will normally handle multi-character keystrokes.  The only
limitation on them is that you cannot remap any character sequence
for which some part of it, starting at the beginning of the sequence,
also has a function.  For example, we have a keyboard here which sends
the characters  ESC F ~  from a function key.  In this case, since
ESC F  also has a meaning, you can't map the function key to anything.
You will get the behaviour of ESC F  plus a tilde inserted after.

The VT220 keyboards here send ESC[227z  and  ESC[22~  kinds of
sequences.  These can be mapped by doing:

(global-unset-key "\e[")
;; VT100 function keys
(global-set-key "\e[A" 'previous-line)
(global-set-key "\e[B" 'next-line)
(global-set-key "\e[D" 'backward-char)
(global-set-key "\e[C" 'forward-char)
;; some SUN console function keys
(global-set-key "\e[32~" 'scroll-up)
(global-set-key "\e[34~" 'scroll-down)
(global-set-key "\e[31~" 'save-buffer)
(global-set-key "\e[33~" 'suspend-emacs)
;; more SUN console keys
(global-unset-key "\eO")
(global-set-key "\eOA" 'previous-line)
(global-set-key "\eOB" 'next-line)
(global-set-key "\eOD" 'backward-char)
(global-set-key "\eOC" 'forward-char)

for example.  What you have to do is global-unset-key any prefixes
to the sequence which might have a meaning, and then simply bind the
longer sequences to emacs commands.  If you want it to be
buffer-local, then use local-unset-key and local-set-key.  Note that
keys can only be bound to interactive commands (those available using
ESC X), so if you write your own, be sure to put (interactive) as the
first line in your defun.

Hope this helps.

--

Andrew Thomas
andrewt@watnow.waterloo.edu	Systems Design Eng.	University of Waterloo
"If a million people do a stupid thing, it's still a stupid thing." - Opus