keymap defs -- using lambda expressions

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3 total messages Started by Thien-Thi Nguyen Sun, 24 Jan 1993 20:28

#2179

Author: Thien-Thi Nguyen
Date: Sun, 24 Jan 1993 20:28

7 lines
643 bytes

(define-key some-mode-map '(lambda () (kill-buffer (current-buffer))))

doesn't work.  could someone explain why not and also suggest the
correct way to do this (w/o having to use a defun)?

thanks,
Thi

Re: keymap defs -- using lambda expressions

#2180

Author: Benjamin R. Liblit
Date: Sun, 24 Jan 1993 21:11

19 lines
1221 bytes

In article <hyk1H?8o3c@atlantis.psu.edu>, TTN@ECL.PSU.EDU (Thien-Thi Nguyen) writes:
> (define-key some-mode-map '(lambda () (kill-buffer (current-buffer))))

You're missing an argument to define-key.  The general format is:

	(define-key KEYMAP KEY DEFINITION)

You've got the keymap and the definition, but you're missing the key
itself.  Try something like the following:

	(define-key some-mode-map "k" '(lambda () .....))

That would find the given lambda function to the "k" key in the given
keymap.  For more information on how keys can be specified, see
"String Type" in the elisp reference.

--
Ben Liblit   -----   "Fais que tes reves soient plus longs que la nuit."
liblit@cs.psu.edu   --   brl102@psuvm.psu.edu   --   brl102@psuvm.bitnet

Re: keymap defs -- using lambda expressions

#2181

Author: Dag Nummedal
Date: Sun, 24 Jan 1993 23:11

32 lines
1819 bytes

In article <C1DMuy.Hw2@cs.psu.edu> liblit@cs.psu.edu (Benjamin R. Liblit) writes:
  
>In article <hyk1H?8o3c@atlantis.psu.edu>, TTN@ECL.PSU.EDU (Thien-Thi Nguyen) writes:
>> (define-key some-mode-map '(lambda () (kill-buffer (current-buffer))))

>You're missing an argument to define-key.  The general format is:

>	(define-key KEYMAP KEY DEFINITION)

>You've got the keymap and the definition, but you're missing the key
>itself.  Try something like the following:

>	(define-key some-mode-map "k" '(lambda () .....))

>That would find the given lambda function to the "k" key in the given
>keymap.  For more information on how keys can be specified, see
>"String Type" in the elisp reference.

The correct way to do this is (the example defines M-K to kill current
buffer):
(define-key esc-map "K" 
 '(lambda () (interactive)(kill-buffer (current-buffer))))

You need the KEY field as said over, but the lambda-expression must
also include some version of the "(interactive)" declaration.

Use describe-function (C-h f) on define-key and interactive if you
need more information.

--
----------------------------------------------------------------------
Dag Nummedal numme@itk.unit.no  "Don't blame me, I just work here."

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