Re: changing a variable with a keystroke

[Tassilo Horn <tassilo@member.fsf.org>]

Joff <jack.joff@gmail.com> writes:

Hi!

>> To fix, you can define your function, then put the function name as
>> the second arg to setkey. But since elisp has a function construct
>> (aka lambda), so you don't need to define it separately.
>> Here's the code:
>> (global-set-key (kbd "C-l C-r")
>>  (lambda () (setq dired-listing-switches "-lR"))
>> ) ;; code not tested
>
> This doesn't seem to work: it gives me:
> Wrong type argument: commandp, (lambda nil (setq dired-listing-switches
> "-lR"))

Only commands (functions with `interactive' spec) can be bound to keys,
so simply putting (interactive) afted "lambda ()" should do the trick.

>> Note that what you are doing is strange. Depending what you want to
>> achieve, there are probably better ways.
>>
> What I want to be able to acheive is being able to switch to and from
> dired recursive list 'mode' with a single key combination (rather than
> going through M-x set-variable... etc or C-u s switch. Is there a
> better way to do this?

Dired can do that automatically.  See

      (info "(emacs)Subdirectories in Dired") <== C-x C-e here!

in the emacs manual.

Bye,
Tassilo
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