Re: Call for volunteers: add tree-sitter support to major modes

[Philip Kaludercic]

Eli Zaretskii <eliz@gnu.org> writes:

> Some of the popular major modes for which we would like to see
> tree-sitter support in Emacs 29 are:
>

[...]

>  emacs-lisp-mode

How much of a priority is using tree sitter for Emacs Lisp?  It appears
that this[0] is the grammar implementation, and it currently doesn't
support the following:

    Autoload cookies
    Definitions (e.g. defun, defvar, defmacro)

As far as I understand, this means that from your list of enhanced
features, the following will either be restricted or not work at all:

 - font-lock
 - indentation
 - imenu
 - which-func

Also, when taking a look at the current implementation for Python[1][2],
I cannot but wonder if a few high-level functions/macros should be added
first to make it easier.

One more thing, it looks like the usage of tree-sitter is enabled for
python by toggling `python-use-tree-sitter'.  Will every mode now have
this kind of an option?  I would hope not...

[0] https://github.com/Wilfred/tree-sitter-elisp
[1] 
https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/progmodes/python.el?h=feature/tree-sitter#n953
[2] 
https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/progmodes/python.el?h=feature/tree-sitter#n5324