bug#68993: treesitter support for forward-sexp-default-function

[Juri Linkov]

Hi Yuan,

Do you think 'comment' is a suitable name for 'treesit-forward-sexp'?
I'm unsure even if 'text' is a good name for 'treesit-forward-sentence'.
But at least these two should be consistent with each another.

Maybe better to add the prefix 'default-' to both?
This will hint that the default function is used.

Then 'treesit-forward-sentence' will support types
'sentence' and 'default-sentence'.
And 'treesit-forward-sexp' will support types
'sexp' and 'default-sexp'.

> @@ -2137,7 +2137,10 @@ treesit-forward-sexp
>    (interactive "^p")
>    (let ((arg (or arg 1))
>          (pred (or treesit-sexp-type-regexp 'sexp)))
> -    (or (if (> arg 0)
> +    (or (when (treesit-node-match-p (treesit-node-at (point)) 'comment t)
> +          (funcall #'forward-sexp-default-function arg)
> +          t)
> +        (if (> arg 0)
>              (treesit-end-of-thing pred (abs arg) 'restricted)
>            (treesit-beginning-of-thing pred (abs arg) 'restricted))
>          ;; If we couldn't move, we should signal an error and report