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Showing content from https://lists.gnu.org/archive/html/emacs-devel/2022-11/msg01082.html below:

Re: Tree sitter support for C-like languages

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] From: Yuan Fu Subject: Re: Tree sitter support for C-like languages Date: Wed, 16 Nov 2022 12:10:22 -0800 
> On Nov 16, 2022, at 12:02 PM, Theodor Thornhill <theo@thornhill.no> wrote:
> 
> Yuan Fu <casouri@gmail.com> writes:
> 
>> I noticed that the new fontification is much busier than cc-mode, so here’s 
>> some of my thoughts:
>> 
> 
> Yeah, I just made it very colorful mostly to prove the point that we
> have very granular control.  I think Randys patch was very good, because
> imo _most_ of the noise is the bracket/pointer/operators etc.

That seems to be a trend for tree-sitter fontification ;-) Neovim does similar 
things.

>> 
>>   :language mode
>>   :override t
>>   :feature 'expression
>>   '((assignment_expression
>>      left: (identifier) @font-lock-variable-name-face)
>> 
>> I think assignment should be isolated out to an “assignment” feature,
>> where we highlight the lhs target of the assignment: the identifier,
>> the field, etc. For example, the assignment group in Python [1]
>> 
> 
> Sure!
> 
>> 
>>     (call_expression
>>      function: (identifier) @font-lock-function-name-face)
>> 
>>     (field_expression
>>      field: (field_identifier) @font-lock-variable-name-face)
>> 
>>     (field_expression
>>      argument: (identifier) @font-lock-variable-name-face
>>      field: (field_identifier) @font-lock-variable-name-face)
>> 
>>     (pointer_expression
>>      argument: (identifier) @font-lock-variable-name-face))
>> 
>> They highlight every single use of functions and fields, so they should be 
>> level 3. (And I’ll disable them personally :-) Highlighting the field and 
>> the functions should be two different features IMO.
> 
> Yep, I agree!  Go ahead :-)

I should clarify that I “And I’ll disable them personally” meant “I’ll disable 
them in my personal config”, but anyway.

> 
>> 
>>   :language mode
>>   :override t
>>   :feature 'statement
>>   '((expression_statement (identifier) @font-lock-variable-name-face)
>>     (labeled_statement
>>      label: (statement_identifier) @font-lock-type-face))
>> 
> 
> stuff like:
> ```
> add_edge:  // <- this thing
>  gx += WINDOW_LEFT_EDGE_X (w);
>  gy += WINDOW_TOP_EDGE_Y (w);
> 
> store_rect: // <- and this thing
>  STORE_NATIVE_RECT (*rect, gx, gy, width, height);
> 
> ```
> 
> I think you should just tweak it like you want.  I think it's very
> time-consuming creating separate patches and bug-reports for small
> tweaks and maintenance issues.  I trust your judgment here, though I
> also think that Randy had some nice ideas :)
> 
> Just hack away!

Thanks! Will do.

Yuan

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