subtree(3p/exwm): update to EXWM 0.30

Merge commit '3e6bfe36af' into HEAD

Change-Id: Ieebca600b409765d9109fd2b718bd74e533c12e1

third_party/exwm/exwm-core.el

@@ -82,6 +82,7 @@ Here are some predefined candidates:
 (defvar exwm-input--simulation-keys)
 (defvar exwm-input-line-mode-passthrough)
 (defvar exwm-input-prefix-keys)
+(defvar exwm-workspace--list)
 (declare-function exwm-input--fake-key "exwm-input.el" (event))
 (declare-function exwm-input--on-KeyPress-line-mode "exwm-input.el"
                   (key-press raw-data))
@@ -94,6 +95,8 @@ Here are some predefined candidates:
 (declare-function exwm-manage--kill-buffer-query-function "exwm-manage.el")
 (declare-function exwm-workspace-move-window "exwm-workspace.el"
                   (frame-or-index &optional id))
+(declare-function exwm-workspace-switch "exwm-workspace.el"
+                  (frame-or-index &optional force))
 
 (define-minor-mode exwm-debug
   "Debug-logging enabled if non-nil."
@@ -229,6 +232,14 @@ If CONN is non-nil, use it instead of the value of the variable
       (setq ret-depth depth))
     (list ret-visual ret-depth ret-colormap)))
 
+(defun exwm--mode-name ()
+  "Mode name string used in `exwm-mode' buffers."
+  (let ((name "EXWM"))
+    (if (cl-some (lambda (i) (frame-parameter i 'exwm-urgency))
+                 exwm-workspace--list)
+        (propertize name 'face 'font-lock-warning-face)
+      name)))
+
 ;; Internal variables
 (defvar-local exwm--id nil)               ;window ID
 (defvar-local exwm--configurations nil)   ;initial configurations.
@@ -311,7 +322,7 @@ One of `line-mode' or `char-mode'.")
 ;; Also, inactive entries should be disabled rather than hidden.
 (easy-menu-define exwm-mode-menu exwm-mode-map
   "Menu for `exwm-mode'."
-  '("EXWM"
+  `("EXWM"
     "---"
     "*General*"
     "---"
@@ -336,22 +347,20 @@ One of `line-mode' or `char-mode'.")
     ["Send key" exwm-input-send-next-key (eq exwm--input-mode 'line-mode)]
     ;; This is merely a reference.
     ("Send simulation key" :filter
-     (lambda (&rest _args)
-       (let (result)
-         (maphash
-          (lambda (key value)
-            (when (sequencep key)
-              (setq result (append result
-                                   `([
-                                      ,(format "Send '%s'"
-                                               (key-description value))
-                                      (lambda ()
-                                        (interactive)
-                                        (dolist (i ',value)
-                                          (exwm-input--fake-key i)))
-                                      :keys ,(key-description key)])))))
-          exwm-input--simulation-keys)
-         result)))
+     ,(lambda (&rest _args)
+        (let (result)
+          (maphash
+           (lambda (key value)
+             (when (sequencep key)
+               (setq result (append result
+                                    `([,(format "Send '%s'"
+                                                (key-description value))
+                                       ,(lambda ()
+                                          (interactive)
+                                          (mapc #'exwm-input--fake-key value))
+                                       :keys ,(key-description key)])))))
+           exwm-input--simulation-keys)
+          result)))
 
     ["Define global binding" exwm-input-set-key]
 
@@ -368,26 +377,20 @@ One of `line-mode' or `char-mode'.")
     ["Switch workspace" exwm-workspace-switch]
     ;; Place this entry at bottom to avoid selecting others by accident.
     ("Switch to" :filter
-     (lambda (&rest _args)
-       (mapcar (lambda (i)
-                 `[,(format "Workspace %d" i)
-                   (lambda ()
-                     (interactive)
-                     (exwm-workspace-switch ,i))
-                   (/= ,i exwm-workspace-current-index)])
-               (number-sequence 0 (1- (exwm-workspace--count))))))))
+     ,(lambda (&rest _args)
+        (mapcar (lambda (i)
+                  `[,(format "Workspace %d" i)
+                    ,(lambda ()
+                       (interactive)
+                       (exwm-workspace-switch i))
+                    (/= ,i exwm-workspace-current-index)])
+                (number-sequence 0 (1- (length exwm-workspace--list))))))))
 
 (define-derived-mode exwm-mode nil "EXWM"
   "Major mode for managing X windows.
 
 \\{exwm-mode-map}"
-  ;;
-  (setq mode-name
-        '(:eval (propertize "EXWM" 'face
-                            (when (cl-some (lambda (i)
-                                             (frame-parameter i 'exwm-urgency))
-                                           exwm-workspace--list)
-                              'font-lock-warning-face))))
+  :interactive nil :abbrev-table nil :syntax-table nil
   ;; Change major-mode is not allowed
   (add-hook 'change-major-mode-hook #'kill-buffer nil t)
   ;; Kill buffer -> close window
@@ -396,7 +399,8 @@ One of `line-mode' or `char-mode'.")
   ;; Redirect events when executing keyboard macros.
   (push `(executing-kbd-macro . ,exwm--kmacro-map)
         minor-mode-overriding-map-alist)
-  (setq buffer-read-only t
+  (setq mode-name '(:eval (exwm--mode-name))
+        buffer-read-only t
         cursor-type nil
         left-margin-width nil
         right-margin-width nil