[css-mixins-1] Defining how results referring to a function should be handled

[Que-tin]

How should results should be handled that return a custom-indent that might be a reference to another function?

First of how to properly type and return a dashed-function.

@function --x1() returns <number> {
  result: 2;
}

/* Is <custom-ident> or <dashed-function> the right data type? */
@function --x2() returns <custom-ident> {
  result: ident("x1");
}

/* What would I need to do to return a reference to a function without ident? */
@function --x3() returns <dashed-function> {
  result: --x1;
}

@function --x4() returns <dashed-function> {
  result: var(--x1);
}

And then how to use it

.x {
 /* Will this be possible? */
 --y: --x2()();

 /* Or do I need to do this? */
 --y: --x2();
 --z: --y();
}

[Que-tin]

@andruud Is that the proper way to explain the thing?

P.s. can't set labels, so label needs to be added.

[andruud]

We probably need a new arbitrary substitution function (call() ?) that takes a dashed-ident and invokes a function from that. This would be useful for the ident() function as well.