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* Doing the impossible: magic font-lock-keywords-only changes
@ 2009-06-04 13:37 Lennart Borgman
  2009-06-05  0:17 ` Stefan Monnier
  0 siblings, 1 reply; 6+ messages in thread
From: Lennart Borgman @ 2009-06-04 13:37 UTC (permalink / raw)
  To: Emacs-Devel devel

Todays question:
Can You when You execute this

      (message "YY:before: font-lock-keywords-only =%s in buffer %s,
def=%s" font-lock-keywords-only (current-buffer) (default-value
font-lock-keywords-only))
      (if (nth 1 defaults)
          (set (make-local-variable 'font-lock-keywords-only) t)
        (kill-local-variable 'font-lock-keywords-only))
      (message "YY:after : font-lock-keywords-only =%s in buffer %s,
def=%s" font-lock-keywords-only (current-buffer) (default-value
font-lock-keywords-only))

and gett this output? :

    YY:before: font-lock-keywords-only =nil in buffer only-html.html, def=nil
    YY:after : font-lock-keywords-only =t in buffer only-html.html, def=t

I can. Unfortunately.

However I can only do this magic with MuMaMo. But I do not understand
how it does it. Anyone?

Hint: This is in a call from fontification-functions. And the function
where I added the trace above is font-lock-set-defaults.

I am taking a pause now. Some fresh air.




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Doing the impossible: magic font-lock-keywords-only changes
  2009-06-04 13:37 Doing the impossible: magic font-lock-keywords-only changes Lennart Borgman
@ 2009-06-05  0:17 ` Stefan Monnier
  2009-06-05  0:45   ` Lennart Borgman
  0 siblings, 1 reply; 6+ messages in thread
From: Stefan Monnier @ 2009-06-05  0:17 UTC (permalink / raw)
  To: Lennart Borgman; +Cc: Emacs-Devel devel

>       (message "YY:before: font-lock-keywords-only =%s in buffer %s,
> def=%s" font-lock-keywords-only (current-buffer) (default-value
> font-lock-keywords-only))
 ^^^
  '


        Stefan




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Doing the impossible: magic font-lock-keywords-only changes
  2009-06-05  0:17 ` Stefan Monnier
@ 2009-06-05  0:45   ` Lennart Borgman
  2009-06-05  0:46     ` Lennart Borgman
  2009-06-05 19:39     ` Davis Herring
  0 siblings, 2 replies; 6+ messages in thread
From: Lennart Borgman @ 2009-06-05  0:45 UTC (permalink / raw)
  To: Stefan Monnier; +Cc: Emacs-Devel devel

On Fri, Jun 5, 2009 at 2:17 AM, Stefan Monnier<monnier@iro.umontreal.ca> wrote:
>>       (message "YY:before: font-lock-keywords-only =%s in buffer %s,
>> def=%s" font-lock-keywords-only (current-buffer) (default-value
>> font-lock-keywords-only))
>  ^^^
>  '

Ah, did not notice, but in this case the output will be the same
(since font-lock-keywords-only is either t or nil).




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Doing the impossible: magic font-lock-keywords-only changes
  2009-06-05  0:45   ` Lennart Borgman
@ 2009-06-05  0:46     ` Lennart Borgman
  2009-06-05 19:39     ` Davis Herring
  1 sibling, 0 replies; 6+ messages in thread
From: Lennart Borgman @ 2009-06-05  0:46 UTC (permalink / raw)
  To: Stefan Monnier; +Cc: Emacs-Devel devel

... and the solution to this exercise is in bug 3467 ...

On Fri, Jun 5, 2009 at 2:45 AM, Lennart
Borgman<lennart.borgman@gmail.com> wrote:
> On Fri, Jun 5, 2009 at 2:17 AM, Stefan Monnier<monnier@iro.umontreal.ca> wrote:
>>>       (message "YY:before: font-lock-keywords-only =%s in buffer %s,
>>> def=%s" font-lock-keywords-only (current-buffer) (default-value
>>> font-lock-keywords-only))
>>  ^^^
>>  '
>
> Ah, did not notice, but in this case the output will be the same
> (since font-lock-keywords-only is either t or nil).
>




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Doing the impossible: magic font-lock-keywords-only changes
  2009-06-05  0:45   ` Lennart Borgman
  2009-06-05  0:46     ` Lennart Borgman
@ 2009-06-05 19:39     ` Davis Herring
  2009-06-05 21:41       ` Lennart Borgman
  1 sibling, 1 reply; 6+ messages in thread
From: Davis Herring @ 2009-06-05 19:39 UTC (permalink / raw)
  To: Lennart Borgman; +Cc: Stefan Monnier, Emacs-Devel devel

> Ah, did not notice, but in this case the output will be the same
> (since font-lock-keywords-only is either t or nil).

That's not true in general:

(set 'foo t (make-local-variable 'foo) nil)
(cons (default-value foo) (default-value 'foo))

Davis

-- 
This product is sold by volume, not by mass.  If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during
shipping.




^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: Doing the impossible: magic font-lock-keywords-only changes
  2009-06-05 19:39     ` Davis Herring
@ 2009-06-05 21:41       ` Lennart Borgman
  0 siblings, 0 replies; 6+ messages in thread
From: Lennart Borgman @ 2009-06-05 21:41 UTC (permalink / raw)
  To: herring; +Cc: Stefan Monnier, Emacs-Devel devel

On Fri, Jun 5, 2009 at 9:39 PM, Davis Herring<herring@lanl.gov> wrote:
>> Ah, did not notice, but in this case the output will be the same
>> (since font-lock-keywords-only is either t or nil).
>
> That's not true in general:
>
> (set 'foo t (make-local-variable 'foo) nil)
> (cons (default-value foo) (default-value 'foo))

Nice example (but set takes only two pars), but I have of course
tested the output again to see if everything is as I thought.

Please see the bug report for more information.




^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2009-06-05 21:41 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-06-04 13:37 Doing the impossible: magic font-lock-keywords-only changes Lennart Borgman
2009-06-05  0:17 ` Stefan Monnier
2009-06-05  0:45   ` Lennart Borgman
2009-06-05  0:46     ` Lennart Borgman
2009-06-05 19:39     ` Davis Herring
2009-06-05 21:41       ` Lennart Borgman

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