--- a/src/Pure/Thy/sessions.scala Tue May 29 14:45:54 2018 +0200
+++ b/src/Pure/Thy/sessions.scala Tue May 29 15:04:02 2018 +0200
@@ -146,6 +146,7 @@
doc_names: List[String] = Nil,
global_theories: Map[String, String] = Map.empty,
loaded_theories: Graph[String, Outer_Syntax] = Graph.string,
+ used_theories: List[Document.Node.Name] = Nil,
known: Known = Known.empty,
overall_syntax: Outer_Syntax = Outer_Syntax.empty,
imported_sources: List[(Path, SHA1.Digest)] = Nil,
@@ -349,6 +350,7 @@
doc_names = doc_names,
global_theories = global_theories,
loaded_theories = dependencies.loaded_theories,
+ used_theories = dependencies.theories,
known = known,
overall_syntax = overall_syntax,
imported_sources = check_sources(imported_files),