bug#61302: 29.0.60; rust-ts-mode does not show function-invocation on field-properties

[Randy Taylor <dev@rjt.dev>]

On Sunday, February 5th, 2023 at 16:56, Dmitry Gutov <dgutov@yandex.ru> wrote:
> Hi Randy,
> 
> Maybe I was too quick to commit the change. But let's discuss it.

No, it's fine. You can also see my reply to Jostein.

BTW thanks for your work on the other modes and sorry for my lack of replies, I've been busy as of late.

> 
> On 05/02/2023 23:30, Randy Taylor wrote:
> 
> > That's expected (at least to me) because it's a property.
> 
> 
> It's both a property and a function, isn't it?

Sure. But it's still a property, and I wanted them all highlighted the same (or at least the ability to do so).

> 
> > The same
> > applies to c-ts-mode and go-ts-mode as well.
> 
> 
> Regarding c-ts-mode, it might be a simple oversight, given that
> constructs like
> 
> p->handler (it)
> 
> 
> do not come up very often. But if we take js-ts-mode, for example, where
> a property is often a function, the property name is highlighted as a
> function in a funcall.

Maybe in c-ts-mode it's not common, but in c++-ts-mode it is and it shares those rules.

> 
> And speaking of c-ts-mode, this can fix that omission:
> 
> diff --git a/lisp/progmodes/c-ts-mode.el b/lisp/progmodes/c-ts-mode.el
> index 5093c3980b6..3740130be30 100644
> --- a/lisp/progmodes/c-ts-mode.el
> +++ b/lisp/progmodes/c-ts-mode.el
> @@ -470,7 +470,9 @@ c-ts-mode--font-lock-settings
> :language mode
> :feature 'function
> '((call_expression
> - function: (identifier) @font-lock-function-name-face))
> + function:
> + [(identifier) @font-lock-function-name-face
> + (field_expression field: (field_identifier)
> @font-lock-function-name-face)]))
> 
> :language mode
> :feature 'variable

Haven't tested it, but the patch looks good to me, thanks.