bug#60511: 29.0.50; treesit-ready-p should not emit warning by default

[Yuan Fu]

Juri Linkov <juri@linkov.net> writes:

>>>> This currently emits a warning if the ruby grammar is not installed:
>>>>
>>>>     (treesit-ready-p 'ruby)
>>>>
>>>> I think it should *not* emit a warning, as no other predicates in Emacs
>>>> do (e.g. `featurep', `integerp', etc.).
>>>>
>>>> It could have an optional flag to emit a warning, if there's a strong
>>>> need for that.  But personally, I'd rather see a new function for that.
>>>>
>>>> I also don't see much need for the `message' symbol as the second
>>>> argument, so I'd simplify the API by dropping that part.  It's currently
>>>> unused in our tree.
>>>
>>> Like the argument NOERROR of `require', the argument QUIET of 
>>> `treesit-ready-p'
>>> could do the same.
>>
>> Maybe rename it to treesit-check-readiness?
>
> I think treesit-ready-p already is a good name.
> We just need to support more values in its argument QUIET,
> with a new value that does nothing in case of an error,
> and just returns nil.

It already has such option: if QUIET is t, treesit-ready-p returns nil and 
don’t emit anything.

I can make treesit-ready-p not emit any warning by default, and change
the quiet parameter to WARN, and accept either 'warn or ‘message.

Basically:

(treesit-ready-p lang) => t/nil
(treesit-ready-p lang 'warn) => t/emit warning
(treesit-ready-p lang 'message) => t/message

Eli, WDYT?

Yuan