Output `auto-coding-alist' in `describe-current-coding-system'

* lisp/international/mule-diag.el
(describe-current-coding-system): Also output the contents of
`auto-coding-alist', which take precedence over
`file-coding-system-alist' (bug#9575).

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/international/mule-diag.el b/lisp/international/mule-diag.el
index 472529ffc05..dcdcafcea77 100644
--- a/lisp/international/mule-diag.el
+++ b/lisp/international/mule-diag.el
@@ -677,7 +677,8 @@ Priority order for recognizing coding systems when reading files:\n")
                         (princ (cdr (car alist)))
                         (princ "\n")
                         (setq alist (cdr alist)))))))
-        (funcall func "File I/O" file-coding-system-alist)
+        (funcall func "File I/O" (append auto-coding-alist
+                                         file-coding-system-alist))
         (funcall func "Process I/O" process-coding-system-alist)
         (funcall func "Network I/O" network-coding-system-alist))
       (help-mode))))