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- From: zappo@titan.ucc.umass.edu (Eric Ludlam v 2.1a)
- Subject: vt100 arrow keys suggestion
- Message-ID: <ZAPPO.92Dec15101005@titan.ucc.umass.edu>
- Sender: gnulists@ai.mit.edu
- Organization: University Computing Services
- Distribution: gnu
- Date: Tue, 15 Dec 1992 15:10:05 GMT
- Approved: bug-gnu-emacs@prep.ai.mit.edu
- Lines: 45
-
- Howdy,
-
- I've been doing a fair amount of emacs programming on vt300's and
- vt400's over the past few months, and I have the following suggestion
- for dealing with the vt100 style arrow keys. The files vt100.el and
- vt200.el both use keypad.el which sets up a "keypad" of letters bound
- to functions. This works great for standard editing where \C-f is
- always bound to forward-char.
-
- Now lets say you want to rebind \C-f and company to do movement in a
- game, ie move some piece or marker around. Suddenly the arrow keys
- get all confused and move the cursor instead of moving the piece or
- marker. This is annoying.
-
- My suggestion is the following. Emacs has this way kool ability to
- allow you to put a string into a keybinding slot which acts as a
- macro. As a result, I have the following redefinitions in my .emacs
- file:
-
- (define-key global-map "\e[A" "\C-p")
- (define-key global-map "\e[B" "\C-n")
- (define-key global-map "\e[C" "\C-f")
- (define-key global-map "\e[D" "\C-b")
- (define-key global-map "\eOA" "\C-p")
- (define-key global-map "\eOB" "\C-n")
- (define-key global-map "\eOC" "\C-f")
- (define-key global-map "\eOD" "\C-b")
-
- This way, in cases (such as view-mode, dired-mode, games etc, the
- arrows are always bound to whatever the \C-f keys are bound to. In
- any professional release, these definitions would be under CSI-map or
- somesuch, but the action of using strings makes some modes easier to
- deal with. This, of course, will cause problems when moving to such
- emulators as vip or EDT modes, but in general I think this seems kool.
-
- Anyways this is just a suggestion to any who'd care listen.
-
- -Eric
- --
- +---------------------------+--------------------------------------------+
- | Eric M. Ludlam | Student Supervisor of Mainframe Consulting |
- | zappo@titan.ucc.umass.edu | University Computing Services |
- | zappo@gnu.ai.mit.edu | University of Massachusetts, Amherst MA |
- +---------------------------+--------------------------------------------+
-
-