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, 6 insertions, 3 deletions

diff --git a/test/files/neg/t7848-interp-warn.check b/test/files/neg/t7848-interp-warn.check
index cbdc9f4c27..b7df6d8ce2 100644
--- a/test/files/neg/t7848-interp-warn.check
+++ b/test/files/neg/t7848-interp-warn.check
@@ -1,9 +1,12 @@
-t7848-interp-warn.scala:7: warning: `$foo` looks like an interpolated identifier! Did you forget the interpolator?
+t7848-interp-warn.scala:8: warning: `$foo` looks like an interpolated identifier! Did you forget the interpolator?
     "An important $foo message!"
     ^
-t7848-interp-warn.scala:11: warning: That looks like an interpolated expression! Did you forget the interpolator?
+t7848-interp-warn.scala:12: warning: That looks like an interpolated expression! Did you forget the interpolator?
     "A doubly important ${foo * 2} message!"
     ^
+t7848-interp-warn.scala:16: warning: `$bar` looks like an interpolated identifier! Did you forget the interpolator?
+  def j = s"Try using '${ "something like $bar" }' instead."  // warn
+                          ^
 error: No warnings can be incurred under -Xfatal-warnings.
-two warnings found
+three warnings found
 one error found