Re: emacs-29 fbaf113bf38: rust-ts-mode: appropriately fontify doc strings

[Arash Esbati <arash@gnu.org>]

Dmitry Gutov <dgutov@yandex.ru> writes:

> branch: emacs-29
> commit fbaf113bf38ee7db8416f0c0581d479c40b2d69c
> Author: Christophe Troestler <Christophe.Troestler@umons.ac.be>
> Commit: Dmitry Gutov <dmitry@gutov.dev>
>
>     rust-ts-mode: appropriately fontify doc strings
>     
>     * lisp/progmodes/rust-ts-mode.el
>     (rust-ts-mode--comment-docstring): New function.
>     (rust-ts-mode--font-lock-settings): Use it
>     (https://lists.gnu.org/archive/html/emacs-devel/2023-12/msg00019.html).
> [...]
> +(defun rust-ts-mode--comment-docstring (node override start end &rest _args)
> +  "Use the comment or documentation face appropriately for comments."
> +  (let* ((beg (treesit-node-start node))
> +         (end (treesit-node-end node))
> +         (face (save-excursion
> +                 (goto-char beg)
> +                 (if (looking-at "///")
> +                     'font-lock-doc-face
> +                   'font-lock-comment-face))))
> +    (treesit-fontify-with-override beg end face override start end)))
> +

I think this change now produces:

  In rust-ts-mode--comment-docstring:
  progmodes/rust-ts-mode.el:296:61: Warning: Unused lexical argument ‘end’

This is with Emacs from master (cf11fdfd8e) on macOS.

Best, Arash