Re: Make all tree-sitter modes optional

[Po Lu]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> Does c-ts-mode make itself default upon being loaded, or does it make
>> itself the default upon being first enabled?
>
> Upon being loaded.

That is extremely nasty, especially for people who preload all (or most)
Lisp libraries.

c-ts-mode should be fixed before the pretest starts.  It is not some
small triviality that can be dismissed.

Alan Mackenzie <acm@muc.de> writes:

>> Let me ask what I asked earlier, again?
>> Does c-ts-mode make itself default upon being loaded, or does it make
>> itself the default upon being first enabled?
>
> It makes itself default upon loading, even if that loading is only in
> response to C-h C-f c-ts-mode.
>
>> The former has been a Bad Thing for as long as I can remember.
>
> Indeed.

This means that if we release Emacs 29 as-is, the resulting Emacs will
be broken.

There is NO REASON asking Emacs to describe something should result in
changes to auto-mode-alist.