* image-mode.el (image-mode): Display image as text on a terminal.

1 files changed, 14 insertions, 10 deletions

diff --git a/lisp/image-mode.el b/lisp/image-mode.el
index 523ef3f73a8..c84dbab371d 100644
--- a/lisp/image-mode.el
+++ b/lisp/image-mode.el
@@ -60,16 +60,20 @@ to toggle between display as an image and display as text."
   (setq major-mode 'image-mode)
   (use-local-map image-mode-map)
   (add-hook 'change-major-mode-hook 'image-toggle-display-text nil t)
-  (if (not (get-text-property (point-min) 'display))
-      (image-toggle-display)
-    ;; Set next vars when image is already displayed but local
-    ;; variables were cleared by kill-all-local-variables
-    (setq cursor-type nil truncate-lines t))
-  (run-mode-hooks 'image-mode-hook)
-  (message "%s" (concat (substitute-command-keys
-                    "Type \\[image-toggle-display] to view the image as ")
-                   (if (get-text-property (point-min) 'display)
-                       "text" "an image") ".")))
+  (let ((image-display-supported-p (memq window-system '(x w32 mac))))
+    (if (and image-display-supported-p
+             (not (get-text-property (point-min) 'display)))
+        (image-toggle-display)
+      ;; Set next vars when image is already displayed but local
+      ;; variables were cleared by kill-all-local-variables
+      (setq cursor-type nil truncate-lines t))
+    (run-mode-hooks 'image-mode-hook)
+    (if image-display-supported-p
+        (message "%s" (concat
+                       (substitute-command-keys
+                        "Type \\[image-toggle-display] to view the image as ")
+                       (if (get-text-property (point-min) 'display)
+                           "text" "an image") ".")))))
 
 ;;;###autoload
 (define-minor-mode image-minor-mode