1 files changed, 10 insertions, 0 deletions

diff --git a/lisp/international/mule-diag.el b/lisp/international/mule-diag.el
index 2b8b225963e..78c0e1c0e6e 100644
--- a/lisp/international/mule-diag.el
+++ b/lisp/international/mule-diag.el
@@ -618,6 +618,16 @@ PC `codepages' and other coded character sets.  See `non-iso-charset-alist'."
     (with-output-to-temp-buffer (help-buffer)
       (print-coding-system-briefly coding-system 'doc-string)
       (princ "\n")
+      (let ((vars (coding-system-get coding-system 'dependency)))
+        (when vars
+          (princ "See also the documentation of these customizable variables
+which alter the behaviour of this coding system.\n")
+          (dolist (v vars)
+            (princ "  `")
+            (princ v)
+            (princ "'\n"))
+          (princ "\n")))
+
       (princ "Type: ")
       (let ((type (coding-system-type coding-system))
             (flags (coding-system-flags coding-system)))