Analyze end markers when looking ahead

Lookahead also has to replace and end marker with a normal identifier. Fixes scala#13134
dotty-staging · Jul 23, 2021 · acde7f5 · acde7f5
1 parent cc47c56
commit acde7f5
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diff --git a/compiler/src/dotty/tools/dotc/parsing/Scanners.scala b/compiler/src/dotty/tools/dotc/parsing/Scanners.scala
@@ -612,6 +612,7 @@ object Scanners {
       prev.copyFrom(this)
       lastOffset = lastCharOffset
       fetchToken()
+      if token == END && !isEndMarker then token = IDENTIFIER
     }
 
     def reset() = {

diff --git a/tests/pos/i13134.scala b/tests/pos/i13134.scala
@@ -0,0 +1,10 @@
+def test =
+  {
+    val end = 0
+    assert(~end == -1) //Not found: ~
+  }
+
+  {
+    val end = false
+    assert(!end) // postfix operator `end` needs to be enabled
+  }              // by making the implicit value scala.language.postfixOps visible.