1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/international/mule.el b/lisp/international/mule.el
index 17163071d3f..d4dd4e4cf24 100644
--- a/lisp/international/mule.el
+++ b/lisp/international/mule.el
@@ -1668,6 +1668,7 @@ in-place."
 
 ;;; FILE I/O
 
+;; TODO many elements of this list are also in inhibit-local-variables-regexps.
 (defcustom auto-coding-alist
   ;; .exe and .EXE are added to support archive-mode looking at DOS
   ;; self-extracting exe archives.
@@ -1677,7 +1678,7 @@ arc\\|zip\\|lzh\\|lha\\|zoo\\|[jew]ar\\|xpi\\|rar\\|7z\\|\
 ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|RAR\\|7Z\\)\\'"
      . no-conversion-multibyte)
     ("\\.\\(exe\\|EXE\\)\\'" . no-conversion)
-    ("\\.\\(sx[dmicw]\\|odt\\|tar\\|tgz\\)\\'" . no-conversion)
+    ("\\.\\(sx[dmicw]\\|odt\\|tar\\|t[bg]z\\)\\'" . no-conversion)
     ("\\.\\(gz\\|Z\\|bz\\|bz2\\|xz\\|gpg\\)\\'" . no-conversion)
     ("\\.\\(jpe?g\\|png\\|gif\\|tiff?\\|p[bpgn]m\\)\\'" . no-conversion)
     ("\\.pdf\\'" . no-conversion)