(mime-encoding-list): Modify DOC to add description about optional

argument SERVICE.

diff --git a/mel.el b/mel.el
index 2b59fda..e0a1339 100644 (file)
--- a/mel.el
+++ b/mel.el
@@ -37,7 +37,9 @@
 (defvar mel-encoding-module-alist nil)
 
 (defun mime-encoding-list (&optional service)
-  "Return list of Content-Transfer-Encoding."
+  "Return list of Content-Transfer-Encoding.
+If SERVICE is specified, it returns available list of
+Content-Transfer-Encoding for it."
   (if service
       (let (dest)
        (mapatoms (lambda (sym)