diff -r 85bb70e1260b -r c40c2975fb02 src/Pure/Isar/token.scala
--- a/src/Pure/Isar/token.scala	Mon Nov 07 19:07:30 2016 +0100
+++ b/src/Pure/Isar/token.scala	Mon Nov 07 19:09:10 2016 +0100
@@ -242,6 +242,11 @@
     kind == Token.Kind.SYM_IDENT ||
     kind == Token.Kind.STRING ||
     kind == Token.Kind.NAT
+  def is_embedded: Boolean = is_name ||
+    kind == Token.Kind.CARTOUCHE ||
+    kind == Token.Kind.VAR ||
+    kind == Token.Kind.TYPE_IDENT ||
+    kind == Token.Kind.TYPE_VAR
   def is_text: Boolean = is_name || kind == Token.Kind.VERBATIM || kind == Token.Kind.CARTOUCHE
   def is_space: Boolean = kind == Token.Kind.SPACE
   def is_comment: Boolean = kind == Token.Kind.COMMENT