Re: ** Graded examples of lambda functions in emacs lisp, how to create hook variable? **

[Kevin Rodgers]

gnuist006 wrote:

> Kevin Rodgers <kevinr@ihs.com> wrote in message 
> news:<3DA1C8EC.6070801@ihs.com>...
>
> > gnuist wrote:
> >
> > > One last question at this stage: I know how you "add-hook" but how do you
> > > create a hook variable in the first place? Is it something particular to
> > > emacs?


I should have responded: yes, it is particular to Emacs Lisp.


> > (defvar some-hook nil)
> >
> > (defun some-function (...)
> >   ...
> >   (run-hooks 'some-hook)
> >   ...)
>
> defvar creates a hook variable.
> run-hooks associates some-hook with the some-function.
>
> Now one writes lambda functions associated with the some-hook
> without modifying the some-function????
>
> Is that the idea? The post was incomplete. Perhaps the author
> know too much for us. But I want a simple concrete minimal example
> of running code.


Yes, that is the idea.  For concrete examples, simply grep (search) for
run-hooks and run-hook-with-args in the lisp/*.el and lisp/*/*.el files

of your Emacs distribution.


Then check out advice.el :-)

--
<a href="mailto:&lt;kevinr&#64;ihs.com&gt;";>Kevin Rodgers</a>