Don't omit scala. from fullNameString.

odersky · odersky · commit 273b184f7795 · 2016-08-16T17:34:42.000+02:00
The previous fix was too drastic, as it would also have omitted
scala, Prefef and other "unqualified owner types" from full names.
We now omit only "empty prefixes", i.e. roots, anonymous classes and
repl qualifiers.
diff --git a/src/dotty/tools/dotc/printing/RefinedPrinter.scala b/src/dotty/tools/dotc/printing/RefinedPrinter.scala
@@ -54,7 +54,7 @@ class RefinedPrinter(_ctx: Context) extends PlainPrinter(_ctx) {
   }
 
   override def fullNameString(sym: Symbol): String =
-    if (isOmittablePrefix(sym.maybeOwner)) nameString(sym)
+    if (isEmptyPrefix(sym.maybeOwner)) nameString(sym)
     else super.fullNameString(sym)
 
   override protected def fullNameOwner(sym: Symbol) = {

Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,7 @@ class RefinedPrinter(_ctx: Context) extends PlainPrinter(_ctx) {`
`54`	`54`	`}`
`55`	`55`
`56`	`56`	`override def fullNameString(sym: Symbol): String =`
`57`		`- if (isOmittablePrefix(sym.maybeOwner)) nameString(sym)`
	`57`	`+ if (isEmptyPrefix(sym.maybeOwner)) nameString(sym)`
`58`	`58`	`else super.fullNameString(sym)`
`59`	`59`
`60`	`60`	`override protected def fullNameOwner(sym: Symbol) = {`