How debug font lock mode settings and/or view existing font lock mode settings?

How debug font lock mode settings and/or view existing font lock mode settings?

[Chris Seberino]

I created my own minor mode that highlights characters beyond column
78.
It works most of the time but sometimes fails like in java mode.

Is it possible to dump the font lock mode settings in a separate
buffer when it doesn't work to see what is going on?

(If you have another idea to fix font lock mode settings I'd love to
hear that too.)

cs

Re: How debug font lock mode settings and/or view existing font lock mode settings?

[Anselm Helbig]

Hi!

> I created my own minor mode that highlights characters beyond column
> 78.
> It works most of the time but sometimes fails like in java mode.
> 
> Is it possible to dump the font lock mode settings in a separate
> buffer when it doesn't work to see what is going on?

Well, that should be easy, you either do 

  M-: font-lock-defaults<RET>

or just put the string "font-lock-defaults" in your java code (most
probably in a comment) and evaluate it there - C-x C-e to see the
result in the echo area and in the *Messages* buffer, C-u C-x C-e to
dump it right into the current buffer. 

You could also write a function that writes the settings into some
other buffer, 

  (defun debug-font-lock () 
    (let ((copy-of-font-lock-defaults font-lock-defaults))
      (save-excursion
        (set-buffer (get-buffer-create "*debug-font-lock*"))
        (goto-char (point-max))
        (insert (format "%s" copy-of-font-lock-defaults)))))

and then call 

  M-: (debug-font-lock)

when you're in your java buffer. There might be more elegant ways to
do this. 8-)

HTH, kind regards, 

Anselm


-- 
Anselm Helbig 
mailto:anselm.helbig+news2009@googlemail.com

Re: How debug font lock mode settings and/or view existing font lock mode settings?

[Chris Seberino]

On Apr 21, 5:39 am, Anselm Helbig <anselm.helbig
+news2...@googlemail.com> wrote:

> Well, that should be easy, you either do
>
>   M-: font-lock-defaults<RET>

Thanks for you help.  I'm running Emacs 22.2.1 and it doesn't
recognize font-lock-defaults!?!?

cs

Re: How debug font lock mode settings and/or view existing font lock mode settings?

[David Combs]

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In article <2d1988f8-ccb8-4b0f-8efd-825dc9f4e219@v23g2000pro.googlegroups.com>,
Chris Seberino  <cseberino@gmail.com> wrote:
>On Apr 21, 5:39 am, Anselm Helbig <anselm.helbig
>+news2...@googlemail.com> wrote:
>
>> Well, that should be easy, you either do
>>
>>   M-: font-lock-defaults<RET>
>
>Thanks for you help.  I'm running Emacs 22.2.1 and it doesn't
>recognize font-lock-defaults!?!?
>
>cs

Ditto.

So what is/was/will-be the task of font-lock-defaults?

Is it supposed to output something?

Since we don't have that function/variable/whatever, do you
have anything to substitute for it?


Seems like a useful thing!


Thanks

David