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src/Pure/Thy/thy_header.ML
changeset 48638 22d65e375c01
parent 46961 5c6955f487e5
child 48707 ba531af91148 
--- a/src/Pure/Thy/thy_header.ML	Wed Aug 01 18:57:17 2012 +0200
+++ b/src/Pure/Thy/thy_header.ML	Wed Aug 01 19:53:20 2012 +0200
@@ -97,7 +97,7 @@
 
 val args =
   theory_name --
-  (Parse.$$$ importsN |-- Parse.!!! (Scan.repeat1 theory_name)) --
+  Scan.optional (Parse.$$$ importsN |-- Parse.!!! (Scan.repeat1 theory_name)) [] --
   Scan.optional (Parse.$$$ keywordsN |-- Parse.!!! keyword_decls) [] --
   Scan.optional (Parse.$$$ usesN |-- Parse.!!! (Scan.repeat1 file)) [] --|
   Parse.$$$ beginN >>
isabelle