please help with font-lock-add-keywords

please help with font-lock-add-keywords

[bufie]

(originally posted to comp.emacs, but moved here since it seems more
appropriate...)

Hi all,

I'd like to fontify a whole bunch of function names for a project I'm
working on (which uses lisp mode, not emacs-lisp-mode -- for reference,
I'm using GNU emacs 23.1.1).

Almost all of the functions start with the same prefix "qbb-" so that
shouldn't be too hard (though for the examples I've just tried to use
some actual function names to get it to work).  I've done a bunch of web
searching, and haven't figured out a way to make this work.

I've tried all of the following, and none of them work for me...  I
don't claim to be a wizard at this stuff, but thought I had followed the
examples correctly

(font-lock-add-keywords
 'lisp-mode
 '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
    font-lock-keyword-face)))

(font-lock-add-keywords
 'lisp-mode
 '(("\\<\\qbb-create-image\\)" 2 font-lock-keyword-face t)))

(add-hook 'lisp-mode-hook
	  (lambda ()
	    (font-lock-add-keywords
	     nil
             '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
                font-lock-keyword-face)))))

I'm sure this can't be as hard as I'm making it -- help, please!

Thanks in advance!

b

Re: please help with font-lock-add-keywords

[Tassilo Horn]

bufie <bufie@spamneggs.com> writes:

Hi!

> I'd like to fontify a whole bunch of function names for a project I'm
> working on (which uses lisp mode, not emacs-lisp-mode -- for
> reference, I'm using GNU emacs 23.1.1).

This works for me and highlights any symbol starting with qbb- in the
keyword face.

--8<---------------cut here---------------start------------->8---
(font-lock-add-keywords 
 'lisp-mode
 '(("\\<qbb-[[:alnum:]-]+\\>" . font-lock-keyword-face)))
--8<---------------cut here---------------end--------------->8---

> (font-lock-add-keywords
>  'lisp-mode
>  '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>     font-lock-keyword-face)))

Looks ok to me.

> (font-lock-add-keywords
>  'lisp-mode
>  '(("\\<\\qbb-create-image\\)" 2 font-lock-keyword-face t)))
            ^
I think a paren is missing there.  And if there was one, you would like
to highlight the first group, so the 2 has to be replaced with 1.

> (add-hook 'lisp-mode-hook
> 	  (lambda ()
> 	    (font-lock-add-keywords
> 	     nil
>              '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>                 font-lock-keyword-face)))))

Looks correct.  But when using the ("regexp" . face) form, you can use
shy groups for performance reasons, because here you refer to the whole
match anyway and not to a group by number.

Hm, if your first and last solutions don't work, I'd guess you are not
in lisp-mode...

Bye,
Tassilo

Re: please help with font-lock-add-keywords

[bufie]

Tassilo Horn wrote:
> bufie <bufie@spamneggs.com> writes:
> 
> Hi!
> 
>> I'd like to fontify a whole bunch of function names for a project I'm
>> working on (which uses lisp mode, not emacs-lisp-mode -- for
>> reference, I'm using GNU emacs 23.1.1).
> 
> This works for me and highlights any symbol starting with qbb- in the
> keyword face.
> 
> --8<---------------cut here---------------start------------->8---
> (font-lock-add-keywords 
>  'lisp-mode
>  '(("\\<qbb-[[:alnum:]-]+\\>" . font-lock-keyword-face)))
> --8<---------------cut here---------------end--------------->8---

Thanks!  This is perfect -- it seems to do exactly what I needed!  (and
thanks for the help on the other possibilities as well -- that's great
and may come in handy in the future!)

Thanks again, and Happy New Year!

-b

Re: please help with font-lock-add-keywords

[David Combs]

In article <mailman.477.1262264969.18930.help-gnu-emacs@gnu.org>,
Tassilo Horn  <tassilo@member.fsf.org> wrote:
>bufie <bufie@spamneggs.com> writes:
>
>Hi!
>
>> I'd like to fontify a whole bunch of function names for a project I'm
>> working on (which uses lisp mode, not emacs-lisp-mode -- for
>> reference, I'm using GNU emacs 23.1.1).
>
>This works for me and highlights any symbol starting with qbb- in the
>keyword face.
>
>--8<---------------cut here---------------start------------->8---
>(font-lock-add-keywords 
> 'lisp-mode
> '(("\\<qbb-[[:alnum:]-]+\\>" . font-lock-keyword-face)))
>--8<---------------cut here---------------end--------------->8---
>
>> (font-lock-add-keywords
>>  'lisp-mode
>>  '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>>     font-lock-keyword-face)))
>
>Looks ok to me.
>
>> (font-lock-add-keywords
>>  'lisp-mode
>>  '(("\\<\\qbb-create-image\\)" 2 font-lock-keyword-face t)))
>            ^
>I think a paren is missing there.  And if there was one, you would like
>to highlight the first group, so the 2 has to be replaced with 1.
>
>> (add-hook 'lisp-mode-hook
>> 	  (lambda ()
>> 	    (font-lock-add-keywords
>> 	     nil
>>              '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>>                 font-lock-keyword-face)))))
>
>Looks correct.  But when using the ("regexp" . face) form, you can use
>shy groups for performance reasons, because here you refer to the whole

Please, what is a "shy group"?   Some math thing?

Thanks,

David


>match anyway and not to a group by number.
>
>Hm, if your first and last solutions don't work, I'd guess you are not
>in lisp-mode...
>
>Bye,
>Tassilo
>
>
>

Re: please help with font-lock-add-keywords

[Lennart Borgman]

On Thu, Jan 7, 2010 at 1:39 AM, David Combs <dkcombs@panix.com> wrote:
>>> (add-hook 'lisp-mode-hook
>>>        (lambda ()
>>>          (font-lock-add-keywords
>>>           nil
>>>              '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>>>                 font-lock-keyword-face)))))
>>
>>Looks correct.  But when using the ("regexp" . face) form, you can use
>>shy groups for performance reasons, because here you refer to the whole
>
> Please, what is a "shy group"?   Some math thing?


It is a group that does not record sub expressions in the match.
Written with (?: ...) like

             '(("\\<\\(?:qbb-create-image\\|qbb-destroy-image\\)\\>" .