diff --git a/compiler/src/dotty/tools/dotc/printing/SyntaxHighlighting.scala b/compiler/src/dotty/tools/dotc/printing/SyntaxHighlighting.scala
index 902c7c14ef68..99bacc696fde 100644
--- a/compiler/src/dotty/tools/dotc/printing/SyntaxHighlighting.scala
+++ b/compiler/src/dotty/tools/dotc/printing/SyntaxHighlighting.scala
@@ -43,8 +43,8 @@ object SyntaxHighlighting {
     'q' :: 'r' :: 's' :: 't' :: 'u' :: 'v' :: 'w' :: 'x' :: 'y' :: 'z' :: Nil
 
   private val typeEnders =
-   '{'  :: '}' :: ')' :: '(' :: '[' :: ']' :: '=' :: ' ' :: ',' :: '.' ::
-   '\n' :: Nil
+   '{'  :: '}' :: ')' :: '(' :: '[' :: ']' :: '=' :: ' ' :: ',' :: '.' :: '|' ::
+   '&' :: '\n' :: Nil
 
   def apply(chars: Iterable[Char]): Iterable[Char] = {
     var prev: Char = 0
@@ -54,7 +54,8 @@ object SyntaxHighlighting {
 
     @inline def keywordStart =
       prev == 0    || prev == ' ' || prev == '{' || prev == '(' ||
-      prev == '\n' || prev == '[' || prev == ','
+      prev == '\n' || prev == '[' || prev == ',' || prev == ':' ||
+      prev == '|'  || prev == '&'
 
     @inline def numberStart(c: Char) =
       c.isDigit && (!prev.isLetter || prev == '.' || prev == ' ' || prev == '(' || prev == '\u0000')