Index: property-set.jam
===================================================================
--- property-set.jam	(revision 64882)
+++ property-set.jam	(working copy)
@@ -463,19 +463,19 @@
     return $(.empty) ;
 }
 
-if [ option.get hash : : yes ] = yes
+if [ option.get nohash : : yes ] = yes
 {    
     rule hash-maybe ( path ? )
     {
-        path ?= "" ;
-        return [ MD5 $(path) ] ;
-    }
+        return $(path) ;
+    }    
 }
 else
 {
     rule hash-maybe ( path ? )
     {
-        return $(path) ;
-    }    
+        path ?= "" ;
+        return [ MD5 $(path) ] ;
+    }
 }