diff -r 378175f44328 -r 862bfd2b4fd4 src/Pure/PIDE/protocol.scala
--- a/src/Pure/PIDE/protocol.scala	Fri Apr 07 21:17:18 2017 +0200
+++ b/src/Pure/PIDE/protocol.scala	Sat Apr 08 12:31:29 2017 +0200
@@ -359,7 +359,7 @@
           { case Document.Node.Edits(a) => (Nil, list(pair(option(id), option(id)))(a)) },
           { case Document.Node.Deps(header) =>
               val master_dir = File.standard_url(name.master_dir)
-              val theory = Long_Name.base_name(name.theory)
+              val theory = name.theory_base_name  // FIXME
               val imports = header.imports.map({ case (a, _) => a.node })
               val keywords =
                 header.keywords.map({ case (a, Keyword.Spec(b, c, d)) => (a, ((b, c), d)) })