SI-7848 Xlint no warn on $sym with params

This idea brought to you by retronym.

Also improve implicitNotFound detection at typer;
and avoid checking the standard interpolation
expression for cases like s"some $$x".

Some minor refactorings of implicitNotFound strings.

The intersobralator allows extra spaces, i.e., trims.

1 files changed, 5 insertions, 0 deletions

diff --git a/test/files/neg/t7848-interp-warn.scala b/test/files/neg/t7848-interp-warn.scala
index bb3eeff60c..3887aff8de 100644
--- a/test/files/neg/t7848-interp-warn.scala
+++ b/test/files/neg/t7848-interp-warn.scala
@@ -2,6 +2,7 @@
 package test
 
 object Test {
+  def bar = "bar"
   def f = {
     val foo = "bar"
     "An important $foo message!"
@@ -10,4 +11,8 @@ object Test {
     val foo = "bar"
     "A doubly important ${foo * 2} message!"
   }
+  def h = s"Try using '$$bar' instead."  // no warn
+  def i = s"Try using '${ "$bar" }' instead."  // no warn on space test
+  def j = s"Try using '${ "something like $bar" }' instead."  // warn
+  def k = f"Try using '$bar' instead."  // no warn on other std interps
 }