hook for buffer creation

hook for buffer creation

[Francis Moreau]

Hello,

I'd like to hilight some keywords for any buffers whatever the mode
used for this buffer. In order to achieve that I'd like to use the
hook called when a buffer is created but I can't find it. I only found
the hook used when a buffer is killed.

Could anybody tell me the revelant hook to use ?

Thanks

Re: hook for buffer creation

[Lowell Gilbert]

Francis Moreau <francis.moro@gmail.com> writes:

> I'd like to hilight some keywords for any buffers whatever the mode
> used for this buffer. In order to achieve that I'd like to use the
> hook called when a buffer is created but I can't find it. I only found
> the hook used when a buffer is killed.
>
> Could anybody tell me the revelant hook to use ?

This is a kind of strange request.  There are several options in the
"Standard Hooks" node of the elisp manual (Appendix 1).  If the buffers
will always have files attached, I'd suggest find-file-hook.  Otherwise,
something related to local variables will probably get executed at the
right time.

Re: hook for buffer creation

[Francis Moreau]

On Mar 15, 3:40 pm, Lowell Gilbert <lguse...@be-well.ilk.org> wrote:
> Francis Moreau <francis.m...@gmail.com> writes:
> > I'd like to hilight some keywords for any buffers whatever the mode
> > used for this buffer. In order to achieve that I'd like to use the
> > hook called when a buffer is created but I can't find it. I only found
> > the hook used when a buffer is killed.
>
> > Could anybody tell me the revelant hook to use ?
>
> This is a kind of strange request.  There are several options in the
> "Standard Hooks" node of the elisp manual (Appendix 1).  If the buffers
> will always have files attached, I'd suggest find-file-hook.  Otherwise,
> something related to local variables will probably get executed at the
> right time.

This is a kind of a strange answer :)

So there's no hook for buffer creation if the new buffer is not
attached to a file ?

Re: hook for buffer creation

[Lowell Gilbert]

Francis Moreau <francis.moro@gmail.com> writes:

> On Mar 15, 3:40 pm, Lowell Gilbert <lguse...@be-well.ilk.org> wrote:
>> Francis Moreau <francis.m...@gmail.com> writes:
>> > I'd like to hilight some keywords for any buffers whatever the mode
>> > used for this buffer. In order to achieve that I'd like to use the
>> > hook called when a buffer is created but I can't find it. I only found
>> > the hook used when a buffer is killed.
>>
>> > Could anybody tell me the revelant hook to use ?
>>
>> This is a kind of strange request.  There are several options in the
>> "Standard Hooks" node of the elisp manual (Appendix 1).  If the buffers
>> will always have files attached, I'd suggest find-file-hook.  Otherwise,
>> something related to local variables will probably get executed at the
>> right time.
>
> This is a kind of a strange answer :)

Yes, I suppose so.  I just can't imagine wanting to apply the same
highlighting to all my buffers, including the minibuffer, *Help*,
and so on.

> So there's no hook for buffer creation if the new buffer is not
> attached to a file ?

I didn't know for sure, so I pointed you in the direction of the
documentation you might find useful.  I've checked now, though,
and I don't *think* there's a hook for that.  switch-to-buffer is
defined in C code, so it's not as easy to look up as Lisp
functions.  You still might want to check the manual item I
suggested, as there are other options I didn't mention.

Putting on my psychic tech-support hat, on the other hand, I'm
going to guess that faced with whatever you're really trying to
do, I'd probably write a minor mode to do the highlighting and use
normal hooks to apply it as appropriate.

Re: hook for buffer creation

[Colin S. Miller]

Francis Moreau wrote:
> Hello,
> 
> I'd like to hilight some keywords for any buffers whatever the mode
> used for this buffer. In order to achieve that I'd like to use the
> hook called when a buffer is created but I can't find it. I only found
> the hook used when a buffer is killed.
> 
> Could anybody tell me the revelant hook to use ?
> 
> Thanks

Francis,

You could use   buffer-list-changed-hook.  It's called whenever
a frame has its buffers modified. You'd need to call (window-list) on
that frame, and then get the buffer for each window. Then check if that
buffer has yet to be processed by your hook

If you want only the text-editing buffers, regardless of the major mode,
then putting a defadvice on fundamental-mode (it doesn't have a hook),
should work. IIRC, all text-edting modes are derived from fundamental-mode,
and its hooks/init function are called.

HTH,
Colin S. Miller


-- 
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Re: hook for buffer creation

[Francis Moreau]

Hello,

On 17 mar, 23:24, "Colin S. Miller" <no-spam-
thank-...@csmiller.demon.co.uk> wrote:
>
> You could use   buffer-list-changed-hook.  It's called whenever
> a frame has its buffers modified. You'd need to call (window-list) on
> that frame, and then get the buffer for each window. Then check if that
> buffer has yet to be processed by your hook
>
> If you want only the text-editing buffers, regardless of the major mode,
> then putting a defadvice on fundamental-mode (it doesn't have a hook),
> should work. IIRC, all text-edting modes are derived from fundamental-mode,
> and its hooks/init function are called.

That's a good hint, thanks.

Re: hook for buffer creation

[Stefan Monnier]

>> If you want only the text-editing buffers, regardless of the major mode,
>> then putting a defadvice on fundamental-mode (it doesn't have a hook),
>> should work.

It does have a hook: after-change-major-mode-hook
This was introduced in Emacs-22.1, IIRC.


        Stefan

Re: hook for buffer creation

[Dan Davison]

"Colin S. Miller" <no-spam-thank-you@csmiller.demon.co.uk> writes:

> Francis Moreau wrote:
>> Hello,
>>
>> I'd like to hilight some keywords for any buffers whatever the mode
>> used for this buffer. In order to achieve that I'd like to use the
>> hook called when a buffer is created but I can't find it. I only found
>> the hook used when a buffer is killed.
>>
>> Could anybody tell me the revelant hook to use ?
>>
>> Thanks
>
> Francis,
>
> You could use   buffer-list-changed-hook.  It's called whenever
> a frame has its buffers modified.

Would change-major-mode-hook be another alternative? I've been trying to
use it recently with the aim of changing things in all buffers.

Dan


> You'd need to call (window-list) on
> that frame, and then get the buffer for each window. Then check if that
> buffer has yet to be processed by your hook
>
> If you want only the text-editing buffers, regardless of the major mode,
> then putting a defadvice on fundamental-mode (it doesn't have a hook),
> should work. IIRC, all text-edting modes are derived from fundamental-mode,
> and its hooks/init function are called.
>
> HTH,
> Colin S. Miller

Re: hook for buffer creation

[Colin S. Miller]

Dan Davison wrote:
> 
> Would change-major-mode-hook be another alternative? I've been trying to
> use it recently with the aim of changing things in all buffers.
> 
> Dan
> 

Francis/Dan,

I'm not sure; it's not defined in 22.2.1, with only the standard libraries loaded.
By the name of it, then it might be a better hook.

Colin S. Miller

-- 
Replace the obvious in my email address with the first three letters of the hostname to reply.

Re: hook for buffer creation

[Stefan Monnier]

> I'd like to hilight some keywords for any buffers whatever the mode
> used for this buffer.  In order to achieve that I'd like to use the
> hook called when a buffer is created but I can't find it.  I only
> found the hook used when a buffer is killed.  Could anybody tell me
> the revelant hook to use ?

You can try `after-change-major-mode-hook', tho it's fairly recent and
will not always be run when you use code that hasn't been updated to
run it.

`change-major-mode-hook' is also an option (more reliable), but it's run
before changing major mode, so any buffer-local var you may modify from
it will be erased right after (it's typically used to turn off
a major-mode dependent minor mode).

You could also use define-globalized-minor-mode (which internally uses
the above): first define the highlighting you want as a buffer-local
minor-mode and then define a global version of it with
define-globalized-minor-mode.


        Stefan