diff -urNp grub-2.02-rc1.orig/util/grub-mkconfig_lib.in grub-2.02-rc1/util/grub-mkconfig_lib.in
--- grub-2.02-rc1.orig/util/grub-mkconfig_lib.in	2017-02-08 15:01:40.196320433 +0000
+++ grub-2.02-rc1/util/grub-mkconfig_lib.in	2017-02-08 15:01:59.899320211 +0000
@@ -187,6 +187,7 @@ grub_file_is_not_garbage ()
     case "$1" in
       *.dpkg-*) return 1 ;; # debian dpkg
       *.rpmsave|*.rpmnew) return 1 ;;
+      *.bak|*~|.*.swp) return 1 ;;    # backup and swap files from editors
       README*|*/README*)  return 1 ;; # documentation
     esac
   else