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diff --git a/pith/sort.h b/pith/sort.h
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+/*
+ * $Id: sort.h 761 2007-10-23 22:35:18Z hubert@u.washington.edu $
+ *
+ * ========================================================================
+ * Copyright 2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * ========================================================================
+ */
+
+#ifndef PITH_SORT_INCLUDED
+#define PITH_SORT_INCLUDED
+
+
+#include "../pith/sorttype.h"
+#include "../pith/msgno.h"
+
+
+#define	refresh_sort(S,M,F)	sort_folder((S), (M), mn_get_sort(M), \
+					    mn_get_revsort(M), (F))
+
+struct global_sort_data {
+    MSGNO_S *msgmap;
+    SORTPGM *prog;
+};
+
+
+/* sort flags */
+#define	SRT_NON	0x0	/* None; no options set		*/
+#define	SRT_VRB	0x1	/* Verbose			*/
+#define	SRT_MAN	0x2	/* Sorted manually since opened	*/
+
+
+extern struct global_sort_data g_sort;
+
+
+/* exported protoypes */
+char	*sort_name(SortOrder);
+void	 sort_folder(MAILSTREAM *, MSGNO_S *, SortOrder, int, unsigned);
+int	 decode_sort(char *, SortOrder *, int *);
+void	 reset_sort_order(unsigned);
+
+
+#endif /* PITH_SORT_INCLUDED */