Patch-Source: https://users.bitkeeper.org/t/makepatch-doesnt-always-include-quite-the-right-changes/1202

--- a/src/cset.c
+++ b/src/cset.c
@@ -755,7 +755,7 @@ doDiff(sccs *sc)
 		printf("\n");
 		return;
 	}
-	e = PARENT(sc, e);
+	e--;
 	if (e == d) return;
 	sccs_diffs(sc, REV(sc, e), REV(sc, d), &dop, stdout);
 }