Fix up smiley emoji application to make it reversible

* lisp/gnus/smiley.el (smiley-region): Use text properties for the
emojis instead of rewriting the message.

diff --git a/lisp/gnus/smiley.el b/lisp/gnus/smiley.el
index 7d6efacfe07274a5782a7987357aebe9d4e8b372..3edae04fcc06c341cdf97bf6ed07db82b99ee8d7 100644 (file)
--- a/lisp/gnus/smiley.el
+++ b/lisp/gnus/smiley.el
@@ -227,7 +227,11 @@ A list of images is returned."
                   (progn
                    (gnus-add-image 'smiley image)
                    (gnus-put-image image string 'smiley))
-                (insert image)))))
+               ;; This is a string, but mark the property for
+               ;; deletion if the washing method is switched off.
+                (insert (propertize string
+                                   'display image
+                                   'gnus-image-category 'smiley))))))
        images))))
 
 ;;;###autoload