=== modified file 'diffmake.awk'
--- diffmake.awk	2014-07-02 14:02:45 +0000
+++ diffmake.awk	2014-07-02 14:00:59 +0000
@@ -4,7 +4,7 @@
 
 {
 	r=$0;
-	gsub(/[:%/?*]/, "_", r)
+	gsub(/[:%/?*.]/, "_", r)
 	print r":\n\tbzr diff -r "$0" >"r".new || test $$? = 1\n\tmv "r".new "r"\n\n"
 	d=d" "r
 }