bug#60559: 29.0.60; "Cannot activate tree-sitter" spam

[Eli Zaretskii <eliz@gnu.org>]

> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: Eric Gillespie <epg@pretzelnet.org>,  60559@debbugs.gnu.org
> Date: Wed, 04 Jan 2023 20:59:04 +0100
> 
> >> 	Warning (treesit): Cannot activate tree-sitter, because
> >> 	tree-sitter library is not compiled with Emacs
> >
> > This is not a bug.  Emacs 29 comes with major modes for TOML files and
> > for Dockerfiles, and those new major modes require that you build
> > Emacs with the tree-sitter library (and install the corresponding
> > parser grammar libraries).  If you don't want to do that, you can
> > instead customize auto-mode-alist to make Emacs use Fundamental mode
> > (or any other mode you like) for these two file types.
> 
> Emacs 28 already has conf-toml-mode for TOML files, so shouldn't
> toml-ts-mode be handled like e.g. c-ts-mode instead of being added to
> auto-mode-alist? (The default value of that variable in Emacs 29 still
> contains an entry for conf-toml-mode, lower down than the entry for
> toml-ts-mode.)

We could indeed do that for TOML files, but I believe the problem
raised here is more general.