🚀 go-pugleaf

>Date: Wed, 3 Aug 94 17:40:21 -0400
>From: rms@gnu.ai.mit.edu (Richard Stallman)
>
>    In emacs-19.25, with face-lock 3.03, using font-lock-fontify-region seems
>    to re-fontify only the "comment", and "string" faces, but not "keyword",
>    "type", or "function".
>
>I am not sure what you mean.  Please send me a precise recipe
>for a problem and tell me precisely what I should expect to see
>that is wrong at the end of it.

I have contrived an example that does not require face-lock.

In your .emacs file, put:

   (if (eq window-system 'x)
       (progn
         (require 'font-lock)
         (eval-after-load
          "font-lock"
          (progn
            (setq c-font-lock-keywords c-font-lock-keywords-2)
            (setq font-lock-keyword-face 'underline)))
        ))

(Note that you only need a font that supports underline to see this).

Edit a file in C-mode with something like:

   if (something)
      /* this is a comment */
      printf ("this is a string\n");

Use "M-x font-lock-mode RET" to turn on font lock for the file.  See that
the keyword "if" is underlined, as well as the comment and the string.

Select the code fragment in a region.  Use "ESC ESC (font-lock-unfontify-region
(region-beginning) (region-end)) RET" to un-fontify the region.  Note that the
underlining is gone.

Re-select the same region.  Use "ESC ESC (font-lock-fontify-region
(region-beginning) (region-end)) RET" to re-fontify the region.  Note that
the comment and string are underlined, but the keyword "if" is not.  I expect
to see the "if" keyword underlined.  Use "M-x font-lock-fontify-buffer RET",
and see that "if" becomes underlined again.

Fontify-region and fontify-buffer should give the same results on the affected
text, right?

Let me know if you need any other information from me.

thanks,
tw