"_" ==> "<-" in all S dialects via ESS
Martin Maechler
maechler at stat.math.ethz.ch
Wed Oct 4 19:17:55 CEST 2000
>>>>> "mikalzet" == mikalzet <mikalzet at libero.it> writes:
mikalzet> On Mon, 2 Oct 2000, Hans Ehrbar wrote:
>> Pierre, the function bound to a key must be an interactive
>> command. Furthermore, I did not have success assigning
>> anything to control-=, but I found that Ctrl-^ was
>> unassigned in my version of ess-mode, therefore the
>> following worked for me:
>>
>> (defun R-equals () (interactive) (insert " <- "))
>> (define-key ess-mode-map "\C-^" 'R-equals)
mikalzet> whereas Pierre wrote :
>> > (defun R-equals () (insert "<-"))
>> > (global-set-key [?\C-=] 'R-equals)
mikalzet> Neither work for me ( xemacs on linux mandrake 7.1 ).
yes, Xemacs and GNU emacs differ in this key-setting syntax things...
mikalzet> The first says that ess-mode-map doesn't exist or something
mikalzet> like that, - gives an error message on startup and suggests I
mikalzet> debug - the second says that the key is undefined.
mikalzet> R on Xemacs seems to work OK for the rest.
On R-help, Ed Kademan <kademan at phz.com> posted
{Date: 03 Oct 2000 11:07:15 -0400}
EK> > Could ESS indeed be programmed to insert "<-" when one typed "_" ?
EK>
EK> I have something like the following in my .emacs file to do that:
EK>
EK> (add-hook
EK> 'inferior-ess-mode-hook
EK> '(lambda ()
EK> (define-key inferior-ess-mode-map "_" "<-")))
where I think he should have used spaces around the "<-", too,
and do the definition also for ess-mode and its map.
The next version of ESS will have something like
(defvar ess-S-assign " <- "
"*String to be used for left assignment in all S dialects.
Currently only activated by \\[ess-add-MM-keys].")
;; and
(defun ess-add-MM-keys ()
"Define \"C-c f\" and re-define \"_\", the latter to `ess-S-assign', typically \" <- \"."
(interactive)
(require 'ess-mode)
(require 'ess-inf)
(define-key ess-mode-map "\C-cf" 'ess-insert-function-outline)
;;; FIXME: MM thinkgs the following should be on by default.
;;; ----- The user can always customize `ess-S-assign' ...
;; Now you must use "C-q _" if you really want "_"
(define-key ess-mode-map "_" ess-S-assign)
(define-key inferior-ess-mode-map "_" ess-S-assign)
)
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO D10 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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