Re: Average-user-facing interface for tree-sitter

[Theodor Thornhill]

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

>>> Yes, sorry, I made some further changes to js-mode. Could you have a look
>>> and see if it makes sense?
>>>
>> I'm not sure I really like the new changes.
>
> [ Context: I'm largely to blame, I proposed the change.  ]
>

No worries :-)

>> Now we init everything in
>> js-mode in addition to everything treesitter related.  So now stuff like
>>
>> ```
>>   (setq-local font-lock-defaults
>>               (list js--font-lock-keywords nil nil nil nil
>>                     '(font-lock-syntactic-face-function
>>                       . js-font-lock-syntactic-face-function)))
>>   (setq-local syntax-propertize-function #'js-syntax-propertize)
>>   (add-hook 'syntax-propertize-extend-region-functions
>>             #'syntax-propertize-multiline 'append 'local)
>>   (add-hook 'syntax-propertize-extend-region-functions
>>             #'js--syntax-propertize-extend-region 'append 'local)
>>   (setq-local prettify-symbols-alist js--prettify-symbols-alist)
>>
>>   (setq-local parse-sexp-ignore-comments t)
>> ```
>
> Hmm... yeah, undoing those add-hook settings of various other variables
> which treesit-mode doesn't use is a problem.  We need to find
> a better way.
>
>

Yeah.  Shouldn't it be possible to just have a global var instead of a
mode?  That way we can just look for that variable when enabling the
mode, and avoid calling anything other than what we want.  At least for
the foreseeable future, enabling these per mode in the init file
shouldn't really be too much of a problem, IMO.  When more users
actually get to try this we can get a feel for how the init should best
be handled.

To me the '*-use-tree-siter' defcustoms was beautiful :)

Theo