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-rw-r--r--exwm-floating.el18
-rw-r--r--exwm-input.el59
-rw-r--r--exwm-layout.el25
-rw-r--r--exwm-manage.el13
-rw-r--r--exwm-workspace.el268
-rw-r--r--exwm.el8
6 files changed, 320 insertions, 71 deletions
diff --git a/exwm-floating.el b/exwm-floating.el
index 88fa2077e733..ff584c03eeb1 100644
--- a/exwm-floating.el
+++ b/exwm-floating.el
@@ -106,8 +106,10 @@
     ;; FIXME: check normal hints restrictions
     (let* ((display-width (frame-pixel-width original-frame))
            (display-height (- (frame-pixel-height original-frame)
-                              (window-pixel-height (minibuffer-window
-                                                    original-frame))
+                              (if exwm-workspace-minibuffer-position
+                                  0
+                                (window-pixel-height (minibuffer-window
+                                                      original-frame)))
                               (* 2 (window-mode-line-height))
                               (window-header-line-height window)
                               (* 2 exwm-floating-border-width)))
@@ -180,12 +182,22 @@
   (interactive)
   (let ((buffer (exwm--id->buffer id)))
     (with-current-buffer buffer
+      ;; Reparent the container to the workspace
       (xcb:+request exwm--connection
           (make-instance 'xcb:ReparentWindow
                          :window exwm--container
                          :parent (frame-parameter exwm-workspace--current
                                                   'exwm-workspace)
-                         :x 0 :y 0)))   ;temporary position
+                         :x 0 :y 0))    ;temporary position
+      ;; Put the container just above the Emacs frame
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ConfigureWindow
+                         :window exwm--container
+                         :value-mask (logior xcb:ConfigWindow:Sibling
+                                             xcb:ConfigWindow:StackMode)
+                         :sibling (frame-parameter exwm-workspace--current
+                                                   'exwm-outer-id)
+                         :stack-mode xcb:StackMode:Above)))
     (xcb:flush exwm--connection)
     (with-current-buffer buffer
       (when exwm--floating-frame        ;from floating to non-floating
diff --git a/exwm-input.el b/exwm-input.el
index a5899d5c4eda..757efb756641 100644
--- a/exwm-input.el
+++ b/exwm-input.el
@@ -110,26 +110,25 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
             (exwm--log "Set focus on #x%x" exwm--id)
             (exwm-input--set-focus exwm--id)
             ;; Adjust stacking orders
-            (if exwm--floating-frame
+            (when exwm--floating-frame
+              (if (memq exwm-workspace-minibuffer-position '(top bottom))
+                  ;; Put this floating X window just below the minibuffer.
+                  (xcb:+request exwm--connection
+                      (make-instance 'xcb:ConfigureWindow
+                                     :window exwm--container
+                                     :value-mask
+                                     (logior xcb:ConfigWindow:Sibling
+                                             xcb:ConfigWindow:StackMode)
+                                     :sibling (frame-parameter
+                                               exwm-workspace--minibuffer
+                                               'exwm-container)
+                                     :stack-mode xcb:StackMode:Below))
                 ;; Put this floating X window at top.
                 (xcb:+request exwm--connection
                     (make-instance 'xcb:ConfigureWindow
                                    :window exwm--container
                                    :value-mask xcb:ConfigWindow:StackMode
-                                   :stack-mode xcb:StackMode:TopIf))
-              ;; This should be the last X window but one in the siblings.
-              (with-slots (children)
-                  (xcb:+request-unchecked+reply exwm--connection
-                      (make-instance 'xcb:QueryTree
-                                     :window
-                                     (frame-parameter exwm--frame
-                                                      'exwm-workspace)))
-                (unless (eq (cadr children) exwm--container)
-                  (xcb:+request exwm--connection
-                      (make-instance 'xcb:ConfigureWindow
-                                     :window exwm--container
-                                     :value-mask xcb:ConfigWindow:StackMode
-                                     :stack-mode xcb:StackMode:Below)))))
+                                   :stack-mode xcb:StackMode:Above))))
             ;; Make sure Emacs frames are at bottom.
             (xcb:+request exwm--connection
                 (make-instance 'xcb:ConfigureWindow
@@ -142,21 +141,9 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
         (when (eq (selected-window) exwm-input--focus-window)
           (exwm--log "Focus on %s" exwm-input--focus-window)
           (select-frame-set-input-focus (window-frame exwm-input--focus-window)
-                                        t)
-          (xcb:+request exwm--connection
-              (make-instance 'xcb:ConfigureWindow
-                             :window (frame-parameter
-                                      (window-frame exwm-input--focus-window)
-                                      'exwm-outer-id)
-                             :value-mask xcb:ConfigWindow:StackMode
-                             :stack-mode xcb:StackMode:Below))
-          (xcb:flush exwm--connection)))
+                                        t)))
       (setq exwm-input--focus-window nil))))
 
-(defun exwm-input--on-minibuffer-setup ()
-  "Run in minibuffer-setup-hook to set input focus to the frame."
-  (x-focus-frame (selected-frame)))
-
 (defvar exwm-input--during-key-sequence nil
   "Non-nil indicates Emacs is waiting for more keys to form a key sequence.")
 (defvar exwm-input--temp-line-mode nil
@@ -278,12 +265,13 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
   (global-set-key key command)
   (cl-pushnew key exwm-input--global-keys))
 
-;; These commands usually call something like `read-char' without using the
-;; minibuffer, so they will not get inputs after invoked.  It'd be better if we
-;; can determine whether there's a command waiting for input so that this
-;; variable can be removed.
 (defvar exwm-input-command-whitelist nil
   "A list of commands that when active all keys should be forwarded to Emacs.")
+(make-obsolete-variable 'exwm-input-command-whitelist
+                        "This variable can be safely removed." "25.1")
+
+(defvar exwm-input--during-command nil
+  "Indicate whether between `pre-command-hook' and `post-command-hook'.")
 
 ;;;###autoload
 (defun exwm-input--on-KeyPress-line-mode (key-press)
@@ -295,8 +283,8 @@ It's updated in several occasions, and only used by `exwm-input--set-focus'.")
                  (setq event (xcb:keysyms:keysym->event exwm--connection
                                                         keysym state))
                  (or exwm-input--during-key-sequence
+                     exwm-input--during-command
                      (setq minibuffer-window (active-minibuffer-window))
-                     (memq real-this-command exwm-input-command-whitelist)
                      (memq event exwm-input--global-prefix-keys)
                      (memq event exwm-input-prefix-keys)
                      (memq event exwm-input--simulation-prefix-keys)))
@@ -501,9 +489,12 @@ SIMULATION-KEYS is a list of alist (key-sequence1 . key-sequence2)."
               #'exwm-floating--do-moveresize)
   ;; `pre-command-hook' marks the end of a key sequence (existing or not)
   (add-hook 'pre-command-hook #'exwm-input--finish-key-sequence)
+  ;; Control `exwm-input--during-command'
+  (add-hook 'pre-command-hook (lambda () (setq exwm-input--during-command t)))
+  (add-hook 'post-command-hook
+            (lambda () (setq exwm-input--during-command nil)))
   ;; Update focus when buffer list updates
   (add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update)
-  (add-hook 'minibuffer-setup-hook #'exwm-input--on-minibuffer-setup)
   ;; Update prefix keys for global keys
   (exwm-input--update-global-prefix-keys))
 
diff --git a/exwm-layout.el b/exwm-layout.el
index a290876bb35c..316bf62a7485 100644
--- a/exwm-layout.el
+++ b/exwm-layout.el
@@ -279,10 +279,20 @@
   "Refresh layout when minibuffer grows."
   (run-with-idle-timer 0.01 nil         ;FIXME
                        (lambda ()
-                         (when (and (< 1 (window-height (minibuffer-window)))
-                                    (not (and (eq major-mode 'exwm-mode)
-                                              exwm--floating-frame)))
-                           (exwm-layout--refresh)))))
+                         (when (< 1 (window-height (minibuffer-window)))
+                           (exwm-layout--refresh))))
+  ;; Set input focus on the Emacs frame
+  (x-focus-frame (window-frame (minibuffer-selected-window))))
+
+(defun exwm-layout--on-echo-area-change (&optional dirty)
+  "Run when message arrives or in `echo-area-clear-hook' to refresh layout."
+  (when (and (current-message)
+             (or (cl-position ?\n (current-message))
+                 (> (length (current-message))
+                    (frame-width exwm-workspace--current))))
+    (if dirty
+        (exwm-layout--refresh)
+      (run-with-idle-timer 0.01 nil #'exwm-layout--refresh)))) ;FIXME
 
 (defun exwm-layout-enlarge-window (delta &optional horizontal)
   "Make the selected window DELTA pixels taller.
@@ -383,8 +393,11 @@ See also `exwm-layout-enlarge-window'."
   "Initialize layout module."
   ;; Auto refresh layout
   (add-hook 'window-configuration-change-hook #'exwm-layout--refresh)
-  ;; Refresh when minibuffer grows
-  (add-hook 'minibuffer-setup-hook #'exwm-layout--on-minibuffer-setup t))
+  (unless (memq exwm-workspace-minibuffer-position '(top bottom))
+    ;; Refresh when minibuffer grows
+    (add-hook 'minibuffer-setup-hook #'exwm-layout--on-minibuffer-setup t)
+    (run-with-idle-timer 0 t #'exwm-layout--on-echo-area-change t)
+    (add-hook 'echo-area-clear-hook #'exwm-layout--on-echo-area-change)))
 
 
 
diff --git a/exwm-manage.el b/exwm-manage.el
index 2f35b1475f9a..b32d677ea92b 100644
--- a/exwm-manage.el
+++ b/exwm-manage.el
@@ -360,8 +360,7 @@ Would you like to kill it? "
   (let ((obj (make-instance 'xcb:ConfigureRequest))
         buffer edges)
     (xcb:unmarshal obj data)
-    (with-slots (stack-mode window sibling x y width height border-width
-                            value-mask)
+    (with-slots (window x y width height border-width value-mask)
         obj
       (exwm--log "ConfigureRequest from #x%x (#x%x) @%dx%d%+d%+d, border: %d"
                  window value-mask width height x y border-width)
@@ -391,14 +390,16 @@ Would you like to kill it? "
                                         :border-width 0 :override-redirect 0)
                                        exwm--connection))))
         (exwm--log "ConfigureWindow (preserve geometry)")
-        ;; Configure unmanaged windows
+        ;; Configure the unmanaged window without changing the stacking order.
         (xcb:+request exwm--connection
             (make-instance 'xcb:ConfigureWindow
                            :window window
-                           :value-mask value-mask
+                           :value-mask
+                           (logand value-mask
+                                   (lognot xcb:ConfigWindow:Sibling)
+                                   (lognot xcb:ConfigWindow:StackMode))
                            :x x :y y :width width :height height
-                           :border-width border-width
-                           :sibling sibling :stack-mode stack-mode)))))
+                           :border-width border-width)))))
   (xcb:flush exwm--connection))
 
 (defun exwm-manage--on-MapRequest (data _synthetic)
diff --git a/exwm-workspace.el b/exwm-workspace.el
index 8bdcc6345029..9669428c85f9 100644
--- a/exwm-workspace.el
+++ b/exwm-workspace.el
@@ -24,7 +24,6 @@
 ;; This module adds workspace support for EXWM.
 
 ;; Todo:
-;; + Auto hide minibuffer, or allow users to place it elsewhere.
 ;; + Add system tray support.
 
 ;;; Code:
@@ -100,6 +99,17 @@
 (defvar exwm-workspace-current-index 0 "Index of current active workspace.")
 (defvar exwm-workspace-show-all-buffers nil
   "Non-nil to show buffers on other workspaces.")
+(defvar exwm-workspace--minibuffer nil
+  "The minibuffer frame shared among all frames.")
+(defvar exwm-workspace-minibuffer-position nil
+  "Position of the minibuffer frame.
+
+Value nil means to use the default position which is fixed at bottom, while
+'top and 'bottom mean to use an auto-hiding minibuffer.")
+(defvar exwm-workspace-display-echo-area-timeout 1
+  "Timeout for displaying echo area.")
+(defvar exwm-workspace--display-echo-area-timer nil
+  "Timer for auto-hiding echo area.")
 
 ;;;###autoload
 (defun exwm-workspace-switch (index &optional force)
@@ -135,7 +145,30 @@ The optional FORCE option is for internal use only."
         ;; Close the (possible) active minibuffer
         (when (active-minibuffer-window)
           (run-with-idle-timer 0 nil (lambda () (abort-recursive-edit))))
-        (setq default-minibuffer-frame frame)
+        (if (not (memq exwm-workspace-minibuffer-position '(top bottom)))
+            (setq default-minibuffer-frame frame)
+          ;; Resize/reposition the minibuffer frame
+          (let ((x 0)
+                (y (if (eq exwm-workspace-minibuffer-position 'top)
+                       0
+                     (- (frame-pixel-height frame)
+                        (frame-pixel-height exwm-workspace--minibuffer))))
+                (width (x-display-pixel-width))
+                (container (frame-parameter exwm-workspace--minibuffer
+                                            'exwm-container)))
+            (xcb:+request exwm--connection
+                (make-instance 'xcb:ReparentWindow
+                               :window container
+                               :parent (frame-parameter frame 'exwm-workspace)
+                               :x x :y y))
+            (xcb:+request exwm--connection
+                (make-instance 'xcb:ConfigureWindow
+                               :window container
+                               :value-mask (logior xcb:ConfigWindow:Width
+                                                   xcb:ConfigWindow:StackMode)
+                               :width width
+                               :stack-mode xcb:StackMode:Above))
+            (set-frame-width exwm-workspace--minibuffer width nil t)))
         ;; Hide windows in other workspaces by preprending a space
         (unless exwm-workspace-show-all-buffers
           (dolist (i exwm--id-buffer-alist)
@@ -266,6 +299,146 @@ The optional FORCE option is for internal use only."
     (xcb:flush exwm--connection)
     frame))
 
+(defun exwm-workspace--update-minibuffer (&optional echo-area)
+  "Update the minibuffer frame."
+  (let ((height
+         (with-current-buffer
+             (window-buffer (minibuffer-window exwm-workspace--minibuffer))
+           (max 1
+                (if echo-area
+                    (let ((width (frame-width exwm-workspace--minibuffer))
+                          (result 0))
+                      (mapc (lambda (i)
+                              (setq result
+                                    (+ result
+                                       (ceiling (1+ (length i)) width))))
+                            (split-string (current-message) "\n"))
+                      result)
+                  (count-screen-lines))))))
+    (when (and (integerp max-mini-window-height)
+               (> height max-mini-window-height))
+      (setq height max-mini-window-height))
+    (set-frame-height exwm-workspace--minibuffer height)))
+
+(defun exwm-workspace--on-ConfigureNotify (data _synthetic)
+  "Adjust the container to fit the minibuffer frame."
+  (let ((obj (make-instance 'xcb:ConfigureNotify))
+        value-mask y)
+    (xcb:unmarshal obj data)
+    (with-slots (window height) obj
+      (when (eq (frame-parameter exwm-workspace--minibuffer 'exwm-outer-id)
+                window)
+        (when (and (floatp max-mini-window-height)
+                   (> height (* max-mini-window-height
+                                (frame-pixel-height exwm-workspace--current))))
+          (setq height (floor
+                        (* max-mini-window-height
+                           (frame-pixel-height exwm-workspace--current))))
+          (xcb:+request exwm--connection
+              (make-instance 'xcb:ConfigureWindow
+                             :window window
+                             :value-mask xcb:ConfigWindow:Height
+                             :height height)))
+        (if (eq exwm-workspace-minibuffer-position 'top)
+            (setq value-mask xcb:ConfigWindow:Height
+                  y 0)
+          (setq value-mask (logior xcb:ConfigWindow:Y xcb:ConfigWindow:Height)
+                y (- (frame-pixel-height exwm-workspace--current) height)))
+        (xcb:+request exwm--connection
+            (make-instance 'xcb:ConfigureWindow
+                           :window (frame-parameter exwm-workspace--minibuffer
+                                                    'exwm-container)
+                           :value-mask value-mask
+                           :y y
+                           :height height))
+        (xcb:flush exwm--connection)))))
+
+(defun exwm-workspace--display-buffer (buffer alist)
+  "Display buffer in the current workspace frame.
+
+This functions is modified from `display-buffer-reuse-window' and
+`display-buffer-pop-up-window'."
+  (when (eq (selected-frame) exwm-workspace--minibuffer)
+    (setq buffer (get-buffer buffer))   ;convert string to buffer.
+    (let (window)
+      (if (setq window (get-buffer-window buffer exwm-workspace--current))
+          (window--display-buffer buffer window 'reuse alist)
+        (when (setq window (or (window--try-to-split-window
+                                (get-largest-window exwm-workspace--current t)
+                                alist)
+                               (window--try-to-split-window
+                                (get-lru-window exwm-workspace--current t)
+                                alist)))
+          (window--display-buffer
+           buffer window 'window alist display-buffer-mark-dedicated))))))
+
+(defun exwm-workspace--show-minibuffer ()
+  "Show the minibuffer frame."
+  ;; Cancel pending timer.
+  (when exwm-workspace--display-echo-area-timer
+    (cancel-timer exwm-workspace--display-echo-area-timer)
+    (setq exwm-workspace--display-echo-area-timer nil))
+  ;; Show the minibuffer frame.
+  (xcb:+request exwm--connection
+      (make-instance 'xcb:MapWindow
+                     :window (frame-parameter exwm-workspace--minibuffer
+                                              'exwm-container)))
+  (xcb:flush exwm--connection)
+  ;; Unfortunately we need the following lines to workaround a cursor
+  ;; flickering issue for line-mode floating X windows.  They just make the
+  ;; minibuffer appear to be focused.
+  (with-current-buffer (window-buffer (minibuffer-window
+                                       exwm-workspace--minibuffer))
+    (setq cursor-in-non-selected-windows
+          (frame-parameter exwm-workspace--minibuffer 'cursor-type))))
+
+(defun exwm-workspace--hide-minibuffer ()
+  "Hide the minibuffer frame."
+  ;; Hide the minibuffer frame.
+  (xcb:+request exwm--connection
+      (make-instance 'xcb:UnmapWindow
+                     :window (frame-parameter exwm-workspace--minibuffer
+                                              'exwm-container)))
+  (xcb:flush exwm--connection))
+
+(defun exwm-workspace--on-minibuffer-setup ()
+  "Run in minibuffer-setup-hook to show the minibuffer and its container."
+  (unless (> -1 (minibuffer-depth))
+    (add-hook 'post-command-hook #'exwm-workspace--update-minibuffer)
+    (exwm-workspace--show-minibuffer)
+    ;; Set input focus on the Emacs frame
+    (x-focus-frame (window-frame (minibuffer-selected-window)))))
+
+(defun exwm-workspace--on-minibuffer-exit ()
+  "Run in minibuffer-exit-hook to hide the minibuffer container."
+  (unless (> -1 (minibuffer-depth))
+    (remove-hook 'post-command-hook #'exwm-workspace--update-minibuffer)
+    (exwm-workspace--hide-minibuffer)))
+
+(defvar exwm-input--during-command)
+
+(defun exwm-workspace--on-echo-area-dirty ()
+  "Run when new message arrives to show the echo area and its container."
+  (when (and (not (active-minibuffer-window))
+             (or (current-message)
+                 cursor-in-echo-area))
+    (exwm-workspace--update-minibuffer t)
+    (exwm-workspace--show-minibuffer)
+    (unless (or (not exwm-workspace-display-echo-area-timeout)
+                exwm-input--during-command ;e.g. read-event
+                input-method-use-echo-area)
+      (setq exwm-workspace--display-echo-area-timer
+            (run-with-timer exwm-workspace-display-echo-area-timeout nil
+                            #'exwm-workspace--on-echo-area-clear)))))
+
+(defun exwm-workspace--on-echo-area-clear ()
+  "Run in echo-area-clear-hook to hide echo area container."
+  (unless (active-minibuffer-window)
+    (exwm-workspace--hide-minibuffer))
+  (when exwm-workspace--display-echo-area-timer
+    (cancel-timer exwm-workspace--display-echo-area-timer)
+    (setq exwm-workspace--display-echo-area-timer nil)))
+
 (defun exwm-workspace--init ()
   "Initialize workspace module."
   (cl-assert (and (< 0 exwm-workspace-number) (>= 10 exwm-workspace-number)))
@@ -276,19 +449,79 @@ The optional FORCE option is for internal use only."
             (0 (y-or-n-p prompt))
             (x (yes-or-no-p (format "[EXWM] %d window%s currently alive. %s"
                                     x (if (= x 1) "" "s") prompt))))))
-  ;; Initialize workspaces
-  (setq exwm-workspace--list (frame-list))
-  (when (< 1 (length exwm-workspace--list))
-    ;; Emacs client creates an extra (but unusable) frame
-    (dolist (i exwm-workspace--list)
-      (unless (frame-parameter i 'window-id)
-        (setq exwm-workspace--list (delq i exwm-workspace--list))))
-    (cl-assert (= 1 (length exwm-workspace--list)))
-    ;; Prevent user from deleting this frame by accident
-    (set-frame-parameter (car exwm-workspace--list) 'client nil))
-  ;; Create remaining frames
-  (dotimes (_ (1- exwm-workspace-number))
-    (nconc exwm-workspace--list (list (make-frame '((window-system . x))))))
+  (if (not (memq exwm-workspace-minibuffer-position '(top bottom)))
+      ;; Initialize workspaces with minibuffers.
+      (progn
+        (setq exwm-workspace--list (frame-list))
+        (when (< 1 (length exwm-workspace--list))
+          ;; Emacs client creates an extra (but unusable) frame.
+          (dolist (i exwm-workspace--list)
+            (unless (frame-parameter i 'window-id)
+              (setq exwm-workspace--list (delq i exwm-workspace--list))))
+          (cl-assert (= 1 (length exwm-workspace--list)))
+          ;; Prevent user from deleting this frame by accident.
+          (set-frame-parameter (car exwm-workspace--list) 'client nil))
+        ;; Create remaining frames.
+        (dotimes (_ (1- exwm-workspace-number))
+          (nconc exwm-workspace--list
+                 (list (make-frame '((window-system . x)))))))
+    ;; Initialize workspaces without minibuffers.
+    (let ((old-frames (frame-list)))
+      (setq exwm-workspace--minibuffer
+            (make-frame '((window-system . x) (minibuffer . only)
+                          (left . 10000) (right . 10000)
+                          (width . 0) (height . 0)))
+            default-minibuffer-frame exwm-workspace--minibuffer)
+      ;; Remove/hide existing frames.
+      (dolist (f old-frames)
+        (if (frame-parameter f 'client)
+            (make-frame-invisible f)
+          (delete-frame f))))
+    (let ((outer-id (string-to-number
+                     (frame-parameter exwm-workspace--minibuffer
+                                      'outer-window-id)))
+          (container (xcb:generate-id exwm--connection)))
+      (set-frame-parameter exwm-workspace--minibuffer 'exwm-outer-id outer-id)
+      (set-frame-parameter exwm-workspace--minibuffer 'exwm-container
+                           container)
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:CreateWindow
+                         :depth 0 :wid container :parent exwm--root
+                         :x -1 :y -1 :width 1 :height 1
+                         :border-width 0 :class xcb:WindowClass:CopyFromParent
+                         :visual 0        ;CopyFromParent
+                         :value-mask xcb:CW:OverrideRedirect
+                         :override-redirect 1))
+      (exwm--debug
+       (xcb:+request exwm--connection
+           (make-instance 'xcb:ewmh:set-_NET_WM_NAME
+                          :window container
+                          :data "Minibuffer container")))
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ReparentWindow
+                         :window outer-id :parent container :x 0 :y 0))
+      ;; Attach event listener for monitoring the frame
+      (xcb:+request exwm--connection
+          (make-instance 'xcb:ChangeWindowAttributes
+                         :window outer-id
+                         :value-mask xcb:CW:EventMask
+                         :event-mask xcb:EventMask:StructureNotify))
+      (xcb:+event exwm--connection 'xcb:ConfigureNotify
+                  #'exwm-workspace--on-ConfigureNotify))
+    ;; Show/hide minibuffer / echo area when they're active/inactive.
+    (add-hook 'minibuffer-setup-hook #'exwm-workspace--on-minibuffer-setup)
+    (add-hook 'minibuffer-exit-hook #'exwm-workspace--on-minibuffer-exit)
+    (run-with-idle-timer 0 t #'exwm-workspace--on-echo-area-dirty)
+    (add-hook 'echo-area-clear-hook #'exwm-workspace--on-echo-area-clear)
+    ;; Create workspace frames.
+    (dotimes (_ exwm-workspace-number)
+      (push (make-frame `((window-system . x)
+                          (minibuffer . ,(minibuffer-window
+                                          exwm-workspace--minibuffer))))
+            exwm-workspace--list))
+    ;; The default behavior of `display-buffer' (indirectly called by
+    ;; `minibuffer-completion-help') is not correct here.
+    (cl-pushnew '(exwm-workspace--display-buffer) display-buffer-alist))
   ;; Configure workspaces
   (dolist (i exwm-workspace--list)
     (let ((outer-id (string-to-number (frame-parameter i 'outer-window-id)))
@@ -296,11 +529,6 @@ The optional FORCE option is for internal use only."
       ;; Save window IDs
       (set-frame-parameter i 'exwm-outer-id outer-id)
       (set-frame-parameter i 'exwm-workspace workspace)
-      ;; Set OverrideRedirect on all frames
-      (xcb:+request exwm--connection
-          (make-instance 'xcb:ChangeWindowAttributes
-                         :window outer-id :value-mask xcb:CW:OverrideRedirect
-                         :override-redirect 1))
       (xcb:+request exwm--connection
           (make-instance 'xcb:CreateWindow
                          :depth 0 :wid workspace :parent exwm--root
diff --git a/exwm.el b/exwm.el
index 02d4d9cbe26d..720274fdcbb9 100644
--- a/exwm.el
+++ b/exwm.el
@@ -466,9 +466,13 @@
       (make-instance 'xcb:ewmh:set-_NET_DESKTOP_VIEWPORT
                      :window exwm--root
                      :data (make-vector (* 2 exwm-workspace-number) 0)))
-  ;; Set _NET_WORKAREA (with minibuffer and bottom mode-line excluded)
+  ;; Set _NET_WORKAREA (with minibuffer excluded)
   (let* ((workareas
-          (vector 0 0 (x-display-pixel-width) (x-display-pixel-height)))
+          (vector 0 0 (x-display-pixel-width)
+                  (- (x-display-pixel-height)
+                     (if exwm-workspace-minibuffer-position
+                         0
+                       (window-pixel-height (minibuffer-window))))))
          (workareas (mapconcat (lambda (_) workareas)
                                (make-list exwm-workspace-number 0) [])))
     (xcb:+request exwm--connection