Re: Colourising tex keywords

[Jean Louis <bugs@gnu.support>]

* fatiparty--- via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2022-01-10 17:56]:
> 
> Have constructed a set of tex symbols stored in (defvar texcom-colour
> 
> I want to highlight tex commands such as \alpha using colour (using texcom-colour
> for instance).  Although the beginning \ should not be highlighted.  But I am failing 
> miserably to implement this.
> 
> (defface texcom-colour
>   '( (default :inherit bold)
>      ( ((class color) (background light)) :foreground "#00FF00" )
>      ( ((class color) (background dark))  :foreground "#00FF00" )
>      (t :inherit font-lock-builtin-face) )
>   "User defined colour typeface for tex command keywords.")
> 
> (defface texcom-typeface
>   '((t :inherit font-lock-keyword-face))
>    "Colour typeface for tex command keywords.")
> 
> (defconst texcom-cluster
>   `(  (,(rx "\\" word-start (group (or "alpha" "beta" "chi" "delta"))  word-end)
>      (1 'texcom-typeface))  ))

(defun rcd-highlight-list (list)
  "Uses LIST to highlight strings in buffer."
  (hi-lock-mode)
  (let* ((list (delete "" list))
	(highlights hi-lock-face-defaults))
    (while list
      (highlight-regexp (regexp-quote (pop list)) (pop highlights)))))

\alpha
\beta
\chi
\delta

(rcd-highlight-list '("\\alpha" "\\beta" "\\chi" "\\delta"))

hi-lock-face-defaults ⇒ ("hi-yellow" "hi-pink" "hi-green" "hi-blue" "hi-salmon" "hi-aquamarine" "hi-black-b" "hi-blue-b" "hi-red-b" "hi-green-b" "hi-black-hb")

Instead of variable `hi-lock-face-defaults' you could make your own
color list there.


-- 
Jean

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