mu4e: update transient support

We can now rely on transient being available.

mu4e/meson.build

@@ -1,4 +1,4 @@
-## Copyright (C) 2022-2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+## Copyright (C) 2022-2026 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ##
 ## This program is free software; you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
@@ -94,8 +94,7 @@ endif
 #
 #... so let's not do that!
 
-# byte compile the sources that can be byte-compiled. This may exclude mu4e-transient.el and
+# byte compile the sources that can be byte-compiled. This may exclude mu4e-dbus.el
-# mu4e-dbus.el
 foreach src : mu4e_bc_srcs
   target_name= '@BASENAME@.elc'
   target_path = join_paths(meson.current_build_dir(), target_name)

mu4e/mu4e-transient.el

@@ -1,13 +1,32 @@
-;;; mu4e-transient.el --- -*- coding: utf-8; lexical-binding: t -*-
+;;; mu4e.el ---  Mu-based mua for emacs -*- lexical-binding: t -*-
-;;
+
-;; Copyright (C) 2025 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+;; Copyright (C) 2025-2026 Dirk-Jan C. Binnema
+
+;; Author: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+;; Maintainer: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+
+;; This file is not part of GNU Emacs.
+
+;; SPDX-License-Identifier: GPL-3.0-or-later
+
+;; mu4e is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; mu4e is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with mu4e.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;;
-;;; Define "transients" for some mu4e functionality.
+;;; Define a "transient" menu for some mu4e functionality.
 
 ;;; Code:
-(require 'mu4e)
 (require 'mu4e-bookmarks)
 (require 'mu4e-compose)
 (require 'mu4e-draft)
@@ -20,6 +39,9 @@
 
 ;; Helpers.
 
+
+(declare-function mu4e "mu4e")
+
 (defun mu4e--toggle-description(name val)
   "Return a string for a transient toggle with NAME.
 Show On/Off based on value VAL."
@@ -137,6 +159,9 @@ toggle-function is created."
     ;;("a" "archive")
 ]])
 
+
+
+;;;###autoload(autoload 'mu4e-transient-menu "mu4e-transient" nil t)
 (transient-define-prefix mu4e-transient-menu()
   "Mu4e main menu."
   [["Main"

mu4e/mu4e.el

@@ -45,6 +45,7 @@
 (require 'mu4e-notification)
 (require 'mu4e-server)     ;; communication with backend
 
+(require 'mu4e-transient)
 (when mu4e-speedbar-support
   (require 'mu4e-speedbar)) ;; support for speedbar
 (when mu4e-org-support

mu4e/mu4e.texi

@@ -3624,13 +3624,8 @@ the counts to latest known ones. When in the main-view, you can use
 @section Transient
 @cindex transient
 
-@code{mu4e} has experimental support for the ``transient'' menus, as per
+@code{mu4e} has support for the ``transient'' menus, as per @ref{(transient)
-@ref{(transient) Top}. Because ``transient'' is not automatically available in
+Top}, through @kbd{M-x mu4e-transient-menu}, or bind it to some key.
-all Emacs version that @code{mu4e} support, you need to manually enable it:
-@lisp
-(when (require 'mu4e-transient nil 'noerror)
-  (global-set-key (kbd "C-c m")  mu  #'mu4e-transient-menu))
-@end lisp
 
 @node Desktop notifications
 @section Desktop notifications