Ticket #55274: 55274.diff

src/wp-includes/media.php

@@ -1376 +1376 @@
                 if ( wp_image_matches_ratio( $image_width, $image_height, $image['width'], $image['height'] ) ) {
                         // Add the URL, descriptor, and value to the sources array to be returned.
                         $source = array(
-                                'url'        => $image_baseurl . $image['file'],
+                                'url'        => $image_baseurl . urlencode( $image['file'] ),
                                 'descriptor' => 'w',
                                 'value'      => $image['width'],
                         );
@@ -1426 +1426 @@
         $srcset = '';
 
         foreach ( $sources as $source ) {
-                $srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', ';
+                $srcset .= $source['url'] . ' ' . $source['value'] . $source['descriptor'] . ', ';
         }
 
         return rtrim( $srcset, ', ' );