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--- a/src/qtgui/idxthread.h
+++ b/src/qtgui/idxthread.h
@@ -16,7 +16,8 @@
  */
 #ifndef _IDXTHREAD_H_INCLUDED_
 #define _IDXTHREAD_H_INCLUDED_
-/* @(#$Id: idxthread.h,v 1.3 2006-01-30 11:15:28 dockes Exp $  (C) 2004 J.F.Dockes */
+/* @(#$Id: idxthread.h,v 1.4 2006-03-22 16:24:41 dockes Exp $  (C) 2004 J.F.Dockes */
+#include <string>
 
 class RclConfig;
 
@@ -24,6 +25,7 @@
 // sessions.
 extern void start_idxthread(const RclConfig& cnf);
 extern void stop_idxthread();
+extern std::string idxthread_currentfile();
 
 extern int startindexing;
 extern int indexingdone;