Refinements to auto tupling

There's a nasty interaction with auto-tupling and trying to insert an implicit
on the qualifier of a call. If the original call fails, we need to "undo" any
auto-tupling decisions in calls where an implicit is inserted on the qualifier.

Also: Needed to fix canAutoTuple test so that Scala2 feature is checked instead of dotty's.

Also: Drop features in dotty.language that duplicate those in scala.language.

1 files changed, 0 insertions, 55 deletions

diff --git a/tests/pending/pos/t2913.scala b/tests/pending/pos/t2913.scala
deleted file mode 100644
index 21700e71a..000000000
--- a/tests/pending/pos/t2913.scala
+++ /dev/null
@@ -1,55 +0,0 @@
-import language.noAutoTupling // try with on and off
-
-class A {
-  def foo(a: Int) = 0
-}
-
-class RichA {
-  def foo(a: String) = 0
-  def foo(a: String, b: String) = 0
-  def foo() = 0
-}
-
-object Test {
-
-  implicit def AToRichA(a: A): RichA = new RichA
-
-  val a = new A
-  a.foo()
-  a.foo(1)
-
-  a.foo("")       // Without implicits, a type error regarding invalid argument types is generated at `""`. This is
-                  // the same position as an argument, so the 'second try' typing with an Implicit View is tried,
-                  // and AToRichA(a).foo("") is found.
-                  //
-                  // My reading of the spec "7.3 Views" is that `a.foo` denotes a member of `a`, so the view should
-                  // not be triggered.
-                  //
-                  // But perhaps the implementation was changed to solve See https://lampsvn.epfl.ch/trac/scala/ticket/1756
-
-  a.foo("a", "b") // Without implicits, a type error regarding invalid arity is generated at `foo(<error>"", "")`.
-                  // Typers#tryTypedApply:3274 only checks if the error is as the same position as `foo`, `"a"`, or `"b"`.
-                  // None of these po
-}
-
-// t0851 is essentially the same:
-object test1 {
-  case class Foo[T,T2](f : (T,T2) => String) extends (((T,T2)) => String){
-    def apply(t : T) = (s:T2) => f(t,s)
-    def apply(p : (T,T2)) = f(p._1,p._2)
-  }
-  implicit def g[T](f : (T,String) => String): test1.Foo[T,String] = Foo(f)
-  def main(args : Array[String]) : Unit = {
-    val f = (x:Int,s:String) => s + x
-    println(f(1))
-    ()
-  }
-}
-object Main {
-  def main(args : Array[String]): Unit = {
-    val fn = (a : Int, str : String) => "a: " + a + ", str: " + str
-    implicit def fx[T](f : (T,String) => String): T => String = (x:T) => f(x,null)
-    println(fn(1))
-    ()
-  }
-}