update documentation

mu4e/mu4e-vars.el

@@ -1002,11 +1002,8 @@ mu4e-compose.")
     path))
 
 (defun mu4e-personal-addresses()
-  "Get the user's personal addresses, if any. If none are set on the server-side,
-fall back to the obsolete `mu4e-user-mail-address-list'."
-  (let ((addrs (and mu4e~server-props
-                    (plist-get mu4e~server-props :personal-addresses))))
-    (if addrs addrs mu4e-user-mail-address-list)))
+  "Get the user's personal addresses, if any."
+  (when mu4e~server-props (plist-get mu4e~server-props :personal-addresses)))
 
 (defun mu4e-server-version()
   "Get the server version, which should match mu4e's."

mu4e/mu4e.texi

@@ -394,9 +394,10 @@ have your e-mail messages stored in a
 @emph{maildir}@footnote{@url{https://en.wikipedia.org/wiki/Maildir};
 in this manual we use the term `maildir' for both the standard and the
 hierarchy of maildirs that store your messages} --- a specific
-directory structure with one-file-per-message. If you are already
-using a maildir, you are lucky. If not, some setup is required:
+directory structure with one-file-per-message.
 
+If you are already using a maildir, you are lucky. If not, some setup
+is required:
 @itemize
 @item @emph{Using an external IMAP or POP server} --- if you are using an
 @abbr{IMAP} or @abbr{POP} server, you can use tools like @t{getmail},
@@ -410,6 +411,9 @@ a maildir as well, maybe in combination with @t{procmail}. A bit of
 googling should be able to provide you with the details.
 @end itemize
 
+The maildir must be on a single file-system; and symbolic links are
+not supported.
+
 @node Initializing the message store
 @section Initializing the message store