Re: change faces interactively

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

Am 21.01.2012 03:07, schrieb Drew Adams:
>> Sorry for my poor explanation.
>> What I want is an interactive function that turns on/off
>> face changes by command.
>>
>> Say, a buffer is in "my-mode".  The above
>> (define-generic-mode ... ) will AUTOMATICALLY apply the face
>> definitions to all characters as soon as the buffer is
>> opened (assuming the mode definition recognizes its file extension).
>> I would rather develop a function that applies the faces
>> AT WILL even after the buffer is opened IN THAT MODE.
>> For example, a buffer is in "my-mode" but none of the words
>> in that buffer is applied with any faces.
>> Now I will implement a function, (defun my-mode-face-1 ()
>> (interactive)...), then a certain set of words in that
>> buffer is bold-faced.  After that, I will implement another
>> function, (defun my-mode-face-2 () (interactive) ...), then
>> another set of the words in that buffer is italic-faced. And so on...
>>
>> If it does not make sense, please ask me again.  I appreciate it.
>
> Sorry, I don't have much time right now - perhaps someone else can help.
>
> If you just want to highlight stuff then perhaps have a look here:
> http://www.emacswiki.org/emacs/FaceMenuPlus
> http://www.emacswiki.org/emacs/HighlightLibrary
>
>
>


here an example from python-mode.el which sets a `py-number-face' 
depending from a `boolean py-use-number-face-p'

(when py-use-number-face-p
   (add-to-list 'python-font-lock-keywords 
'("\\([0-9]+\\([eE][+-]?[0-9]*\\)?\\|0[xX][0-9a-fA-F]+\\)" 1 
py-number-face)))

You can put such into a command, calling font-lock-fontify-buffer afterwards

HTH,


Andreas

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