image-dired: Signal error if file is missing on display

* lisp/image-dired.el (image-dired-display-image): Signal error if
file is missing.

diff --git a/lisp/image-dired.el b/lisp/image-dired.el
index 9cfe4318cfda401ce7643ae2c7f374913eb68f73..07f6c23c8b01919816ae8b3a74569cbbbb0e59b1 100644 (file)
--- a/lisp/image-dired.el
+++ b/lisp/image-dired.el
@@ -2040,6 +2040,8 @@ original size."
         (window (image-dired-display-window))
         (image-type 'jpeg))
     (setq file (expand-file-name file))
+    (when (not (file-exists-p file))
+      (error "No such file: %s" file))
     (if (not original-size)
         (let* ((spec
                 (list