Re: font-lock as a single command

[Emanuel Berg]

Christopher Dimech wrote:

> There is something interesting to tell you. When I call "M-x
> supinf-enable" nothing happens, but when I start writing
> (e.g. "\alpha_{ij}"), as soon as I enter "_" the suscript
> functionality gets enabled for the whole buffer.
>
> Could you help on what is going on?

Here is how I would do it, for starters:

\alpha^{high}
\beta_{low}

(progn
  (font-lock-add-keywords
   'emacs-lisp-mode
   '(
     ("\\^{\\([[:alnum:]]*\\)}" 1 font-lock-builtin-face)
     ("_{\\([[:alnum:]]*\\)}"   1 font-lock-function-name-face)
     )
   t)
  (text-mode)
  (emacs-lisp-mode) )
;;                   ^ eval

You can see the result in this screenshot:

  https://dataswamp.org/~incal/figures/emacs/high-low.png

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