bug#59763: 29.0.60; Filling for c-ts-mode

[Theodor Thornhill via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Yuan Fu <casouri@gmail.com> writes:

>> On Dec 26, 2022, at 2:03 PM, Theodor Thornhill <theo@thornhill.no> wrote:
>> 
>> Yuan Fu <casouri@gmail.com> writes:
>> 
>>> Theodor Thornhill <theo@thornhill.no> writes:
>>> 
>>>> On 25 December 2022 02:30:35 CET, Yuan Fu <casouri@gmail.com> wrote:
>>>>> 
>>>>> Theodor Thornhill <theo@thornhill.no> writes:
>>>>> 
>>>>>> On 24 December 2022 09:36:21 CET, Yuan Fu <casouri@gmail.com> wrote:
>>>>>>> 
>>>>>>> Theodor Thornhill <theo@thornhill.no> writes:
>>>>>>> 
>>>>>>>> Yuan Fu <casouri@gmail.com> writes:
>>>>>>>> 
>>>>>>>>>> On Dec 2, 2022, at 6:58 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>>>>>>>>>> 
>>>>>>>>>>> From: Yuan Fu <casouri@gmail.com>
>>>>>>>>>>> Date: Thu, 1 Dec 2022 21:33:06 -0800
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>> IMO For c-ts-mode to be usable we need to have at least a basic filling
>>>>>>>>>>> function. Below is the function I have in my init.el, could someone have
>>>>>>>>>>> a look and see if it’s good? Alternatively we could copy out the comment
>>>>>>>>>>> and fill it in a temp buffer with c-mode, but I didn’t have the time to try
>>>>>>>>>>> it out and see how well it works.
>>>>>>>>>> 
>>>>>>>>>> Thanks.
>>>>>>>>>> 
>>>>>>>>>> From quick testing, I see a problem:
>>>>>>>>>> 
>>>>>>>>>> . Visit dispnew.c and go to the comment that starts on line 324.  Delete
>>>>>>>>>>   the newline between the two lines of the comment, and invoke the
>>>>>>>>>>   function.  Observe how the first non-blank character of the comment's
>>>>>>>>>>   second line is aligned with the "/*" on the previous line, not with the
>>>>>>>>>>   text after "/*" as I'd expect.
>>>>>>>>> 
>>>>>>>>> I see. I’ll need to look at how cc-mode fill comments.
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Btw, this command should be bound to M-q in ts-c-mode.
>>>>>>>>> 
>>>>>>>>> Will do, once our fill function works well. BTW, Theo, if you have any
>>>>>>>>> idea, don’t hesitate to go ahead :-) No obligations, of course.
>>>>>>>>> 
>>>>>>>>> Yuan
>>>>>>>> 
>>>>>>>> Sure!  Added to my list :)  I had a function at some point that used
>>>>>>>> c-mode to do this. I'll see if I can polish it a little.
>>>>>>> 
>>>>>>> I did some work in filling, it should work like cc-mode in like 90% of
>>>>>>> the cases now, yay!
>>>>>>> 
>>>>>>> Yuan
>>>>>> 
>>>>>> Nice! For all cc-ts-modes?
>>>>> 
>>>>> I only added for c and c++, but support for other modes should be
>>>>> identical. And I think we should have something equivalent to cc-mode’s
>>>>> init which sets up things that are the same in all C-like languages,
>>>>> basically comments and filling.
>>> 
>>> I added indent and filling for other C-like modes.
>>> 
>>>>> But I wonder where should we put it, I guess it’s fine to leave it in
>>>>> c-ts-mode, since there really isn’t much code. Having other modes to
>>>>> require c-ts-mode shouldn’t be a big problem, I think?
>>>>> 
>>>>> Yuan
>>>> 
>>>> How about just having treesit-utils.el, or something like that? There
>>>> are probably many things in the future that will be common among
>>>> modes, yet won't really warrant inheritance. I think we have such an
>>>> example in js/typescript too, iirc.
>>> 
>>> If it’s shared across all tree-sitter modes, it should be in treesit.el,
>>> of course. We are talking about things shared by tree-sitter C-like
>>> modes, so the scope is smaller.
>>> 
>>> Since right now it’s only a handful functions, I made other modes
>>> require c-ts-mode.el. In the future if things accumulate, we can put
>>> things into a separate file (c-ts-mode-common.el or something).
>>> 
>> 
>> Sure.  I just don't like it when these namespaces blend too much.  But
>> your call :-)
>
> It can be treesit-c-common.el or something. We’ll figure it out when the time comes ;-)
>

Yep :)
Theo