mu4e: make mu4e refresh itself

update using the 'ping' function, so read/unread counts get updated.

add a 'g' binding for the main-view.

mu4e/mu4e-main.el

@@ -59,6 +59,7 @@
     (define-key map "A" 'mu4e-about)
     (define-key map "N" 'mu4e-news)
     (define-key map "H" 'mu4e-display-manual)
+    (define-key map "g" 'mu4e)
     map)
 
   "Keymap for the *mu4e-main* buffer.")

mu4e/mu4e-utils.el

@@ -806,28 +806,24 @@ first. If mu4e is already running, execute function FUNC (if
 non-nil). Otherwise, check various requireme`'nts, then start mu4e.
 When successful, call FUNC (if non-nil) afterwards."
   ;; if we're already running, simply go to the main view
-  (if (mu4e-running-p)         ;; already running?
-    (when func (funcall func)) ;; yes! run func if defined
-    (progn
-      ;; no! try to set a context, do some checks, set up pong handler and ping
-      ;; the server maybe switch the context
-      (mu4e~context-autoswitch nil mu4e-context-policy)
-      (mu4e~check-requirements)
-      ;; set up the 'pong' handler func
-      (setq mu4e-pong-func (lambda (props) (mu4e~pong-handler props func)))
-      ;; wake up server
-      (mu4e~proc-ping
-        (mapcar ;; send it a list of queries we'd like to see read/unread info
-                ;; for.
-          (lambda(bm) (plist-get bm :query))
-          (seq-filter (lambda (bm) ;; exclude bookmarks that are not strings,
-                                   ;; and with these flags.
-                        (and (stringp (plist-get bm :query))
-                          (not (or (plist-get bm :hide) (plist-get bm :hide-unread)))))
-            (mu4e-bookmarks))))
-      ;; maybe request the list of contacts, automatically refresh after
-      ;; reindexing
-      (mu4e~request-contacts-maybe))))
+  (unless (mu4e-running-p) ;; already running?
+    ;; no! try to set a context, do some checks, set up pong handler and ping
+    ;; the server maybe switch the context
+    (mu4e~context-autoswitch nil mu4e-context-policy)
+    (mu4e~check-requirements))
+  (setq mu4e-pong-func (lambda (props) (mu4e~pong-handler props func)))
+  (mu4e~proc-ping
+    (mapcar ;; send it a list of queries we'd like to see read/unread info
+      ;; for.
+      (lambda(bm) (plist-get bm :query))
+      (seq-filter (lambda (bm) ;; exclude bookmarks that are not strings,
+                    ;; and with these flags.
+                    (and (stringp (plist-get bm :query))
+                      (not (or (plist-get bm :hide) (plist-get bm :hide-unread)))))
+        (mu4e-bookmarks))))
+  ;; maybe request the list of contacts, automatically refreshed after
+  ;; reindexing
+  (unless mu4e~contacts (mu4e~request-contacts-maybe)))
 
 (defun mu4e-clear-caches ()
   "Clear any cached resources."