How to "import" font-lock keywords?

How to "import" font-lock keywords?

[MH Lee]

Hi,

I would like to "import" keywords from latex-mode into z-latex-mode,
so that I can reuse the syntax highlighting. Can someone please point
out to me how this can be done?

I am using GNU Emacs 21.3.1 on Gentoo Linux.

Thanks,
MH Lee

Re: How to "import" font-lock keywords?

[Joe Corneli]

Check out how it is done in tex-mode.el --

you can add font lock keyword collections together as so.

(defconst tex-font-lock-keywords-3
  (append tex-font-lock-keywords-2
   (eval-when-compile
     (let ((general "\\([a-zA-Z@]+\\|[^ \t\n]\\)")
        (slash "\\\\")
           ;; This is not the same regexp as before: it has a `+' removed.
              ;; The + makes the matching faster in the above cases (where we can
                 ;; exit as soon as the match fails) but would make this matching
                    ;; degenerate to nasty complexity (because we try to match the
                       ;; closing brace, which forces trying all matching combinations).
                          (arg "{\\(?:[^{}\\]\\|\\\\.\\|{[^}]*}\\)*"))
       `((,(concat "[_^] *\\([^\n\\{}]\\|" slash general "\\|" arg "}\\)")
         (1 (tex-font-lock-suscript (match-beginning 0))
              append))))))
  "Experimental expressions to highlight in TeX modes.")

Or, say, like this:

(setq z-latex-font-lock-keywords (append tex-font-lock-keywords-1
                                         z-latex-font-lock-keywords)
  "What we highlight.")

(Use the source to find the right variable names.)

Re: How to "import" font-lock keywords?

[Stefan Monnier]

> I would like to "import" keywords from latex-mode into z-latex-mode,
> so that I can reuse the syntax highlighting. Can someone please point
> out to me how this can be done?

If you use define-derived-mode, that will happen automatically.


        Stefan