Ticket #31590: 31590.patch

src/wp-includes/default-filters.php

@@ -217 +217 @@
 add_action( 'wp_print_footer_scripts', '_wp_footer_scripts'                 );
 add_action( 'init',                'check_theme_switched',            99    );
 add_action( 'after_switch_theme',  '_wp_sidebars_changed'                   );
+add_action( 'wp_print_scripts',    'wp_save_early_comment_reply_clicks', 99 );
 
 if ( isset( $_GET['replytocom'] ) )
     add_action( 'wp_head', 'wp_no_robots' );

src/wp-includes/script-loader.php

@@ -746 +746 @@
 }
 
 /**
+ * Save clicks on a comment reply link before the script has loaded
+ *
+ * On long comment threads, it's possible a visitor will click a reply link
+ * before the comment-reply script loads. React gracefully.
+ *
+ * @since 4.2
+ */
+function wp_save_early_comment_reply_clicks() {
+
+        // check if comment reply script is enqueued
+        if ( wp_script_is( 'comment-reply' ) ) {
+                echo "<script>\n";
+                echo "var addComment = { moveForm : function() { return true; } }\n";
+                echo "</script>\n";
+        }
+
+}
+
+
+/**
  * Administration Screen CSS for changing the styles.
  *
  * If installing the 'wp-admin/' directory will be replaced with './'.