detect the correct mimetype of the files in the trashbin, therefore we have to...

detect the correct mimetype of the files in the trashbin, therefore we have to check the filename without the appended timestamp

apps/files_trashbin/lib/Helper.php

@@ -78,11 +78,12 @@ class Helper {
 					$originalPath = substr($originalPath, 0, -1);
 				}
 			}
+			$type = $entry->getMimeType() === ICacheEntry::DIRECTORY_MIMETYPE ? 'dir' : 'file';
 			$i = array(
 				'name' => $name,
 				'mtime' => $timestamp,
-				'mimetype' => $entry->getMimeType(),
-				'type' => $entry->getMimeType() === ICacheEntry::DIRECTORY_MIMETYPE ? 'dir' : 'file',
+				'mimetype' => $type === 'dir' ? 'httpd/unix-directory' : \OC::$server->getMimeTypeDetector()->detectPath($name),
+				'type' => $type,
 				'directory' => ($dir === '/') ? '' : $dir,
 				'size' => $entry->getSize(),
 				'etag' => '',