Elision and variadic parameters

[aws5295]

Elision does not seem to match variadic parameters - which also use the ... notation.
Below is a simple repro.

Patch file (goal is to swap order of first 2 parameters only):

@@
var first expression
var second expression
@@
-bar(second, first,...)
+bar(first, second,...)

Input:

func foo() {
	bar("b", "a")
	bar("b", "a", "c")
	bar("b", "a", []string{"c"}...)
}

Output:

func foo() {
	bar("a", "b")
	bar("a", "b", "c")
        // Expected: bar("a", "b", []string{"c"}...)
	bar("b", "a", []string{"c"}...)
}

[abhinav]

Thanks for the report @aws5295! We'll work on addressing this.

(Internal tracking task: GO-786.)