* mu4e: mark the various views as 'special'

emacs/mu4e-hdrs.el

@@ -370,6 +370,10 @@ after the end of the search results."
 		   field)
 		 'face 'mu4e-title-face) " ")))
 	 mu4e-headers-fields))))
+
+(put 'mu4e-hdrs-mode 'mode-class 'special)
+
+
  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 (defvar mu4e-msg-map nil
   "*internal* A map (hashtable) which maps a database (Xapian)

emacs/mu4e-main.el

@@ -65,6 +65,7 @@
     buffer-read-only t
     overwrite-mode 'overwrite-mode-binary))
 
+(put 'mu4e-main-mode 'mode-class 'special)
 
 
 (defun mu4e-action-str (str &optional func-or-shortcut)

emacs/mu4e-view.el

@@ -347,6 +347,8 @@ if IS-OPEN is nil, and otherwise open it."
   (setq major-mode 'mu4e-view-mode mode-name mu4e-view-buffer-name)
   (setq truncate-lines t buffer-read-only t))
 
+(put 'mu4e-view-mode 'mode-class 'special)
+
 
 ;; we mark messages are as read when we leave the message; ie., when skipping to
 ;; the next/previous one, or leaving the view buffer altogether.