Ticket #18799: 18799.diff

wp-includes/media.php

@@ -526 +526 @@
         if ( !is_array( $imagedata = wp_get_attachment_metadata( $post_id ) ) )
                 return false;
 
+        // check the original image first!
+        if ( is_array( $size ) && ( ( $imagedata['width'] == $size[0] && $imagedata['height'] <= $size[1] ) || ( $imagedata['height'] == $size[1] && $imagedata['width'] <= $size[0] ) ) ) {
+                $file = basename( $imagedata['file'] );
+                list($width, $height) = image_constrain_size_for_editor( $imagedata['width'], $imagedata['height'], $size );
+                return compact( 'file', 'width', 'height' );
+        }
+        
         // get the best one for a specified set of dimensions
         if ( is_array($size) && !empty($imagedata['sizes']) ) {
                 foreach ( $imagedata['sizes'] as $_size => $data ) {