Redmine

Jens Priesen Krämer, thank you for providing a great patch. However, nothing is displayed on the preview screen immediately after the image is pasted (all of the browsers except IE).
If you add the following patch together, it will work.

diff --git a/public/javascripts/attachments.js b/public/javascripts/attachments.js
index 645038284..053ef076a 100644
--- a/public/javascripts/attachments.js
+++ b/public/javascripts/attachments.js
@@ -103,7 +103,7 @@ function uploadBlob(blob, uploadUrl, attachmentId, options) {
   }, options);

   uploadUrl = uploadUrl + '?attachment_id=' + attachmentId;
-  if (blob instanceof window.File) {
+  if (blob instanceof window.Blob) {
     uploadUrl += '&filename=' + encodeURIComponent(blob.name);
     uploadUrl += '&content_type=' + encodeURIComponent(blob.type);
   }