Hover - function application paramter highlighting

[dos65]

Is your feature request related to a problem? Please describe.

It would be nice to have an additional info in hover for parameters in function application.
This should be useful for functions with large list of parameters.

Describe the solution you'd like

For example, in the following sample:

def foo(a: Int, b: String, c: Double, d: Boolean): Unit = ???
def baz: Double = ???

val a = foo(
  someIntFunc,
  bar,
  ba@@z,
  someFunc3, 
)

Instead of just having an info about baz the hover could also show foo signature with position of baz:

def baz: Double

Used as a parameter in :
def foo(
  a: Int, 
  b: String,
  c: Double, // <- bold/highlighted text ?
  d: Boolean
)

Describe alternatives you've considered

Additional contex

No response

Search terms

hover

[ckipp01]

But isn't this exactly what signature help shows? Adding this feature would sort of make signature help obsolete then no?

[dos65]

@ckipp01 ouch, I tried to use signatureHelp before creating issue but it didn't work for me and I incorrectly decided that it might be showed only if it was triggered by completion.

I've checked it one more time - there was an issue with my keybindings 😄

Anyway, I think it's worth trying to combine hover with sigHelp to see all info at once.

Adding this feature would sort of make signature help obsolete then no?

I don't think that it will make it obsolete completely. It still be useful during typing.