Re: [O] A simple way to search only headlines

[Nick Dokos]

Richard Lawrence <address@hidden> writes:

> Xebar Saram <address@hidden> writes:
>
>> Thank you both Thorsten and Seb, i really appreciate the help!
>>
>> Seb, you wrote: The programming equivalent to C-c a s is:
>>
>>     (org-agenda nil "s")
>>
>> That's what you'd have to bind to a key (using a "lambda" function).
>>
>> im a complete neewb and dont really have any idea on how to do the above,
>> can you show me an example?
>
> I think you're looking for something like:
>
> (define-key org-mode-map (kbd "C-M-h") (lambda () (org-agenda nil "s" "<")))
>
> You could put a line like that in your .emacs.

The OP probably wants this in the global keymap, rather than in 
the org-mode-map: just like the agenda dispatcher C-c a, this
functionality is useful outside an org file.

--8<---------------cut here---------------start------------->8---
(global-set-key (kbd "C-M-h") (lambda () (interactive) (org-agenda nil "s" 
"<")))
--8<---------------cut here---------------end--------------->8---

Also C-M-h runs mark-defun by default and it's not nice to usurp global
keys like that. I would suggest C-c s instead.

Using the global keymap also simplifies the initialization. In order to
put the key definition into the org-mode-map, the map has to be defined
already, i.e the define-key has to be done *after* org is loaded; so you
can't put it in an arbitrary place in .emacs. The safest way is to put
it in a hook (a list of no-argument functions that are executed after
the mode is set on a file):

(setq org-mode-hook
      '(
        (function (lambda ()
                   (define-key org-mode-map 
                     (kbd "C-M-h") (lambda ()
                                     (interactive)
                                     (org-agenda nil "s" "<")))))
        ; maybe followed by more functions in the list
       ) ; this paren end the list
      )  ; this paren closes the setq


Putting it in the global map instead bypasses this problem completely
since the global map is defined before .emacs is loaded. That's not to
say that the global map is always the right place to define a key: on
the contrary, most of the time it isn't. But in this case it is the
right place *and* putting the key definition there is simpler.

-- 
Nick