Ticket #32109: 32109.2.diff

src/wp-includes/js/wp-emoji-loader.js

@@ -62 +62 @@
                 flag:   browserSupportsEmoji( 'flag' )
         };
 
+        settings.DOMReady = false;
+        settings.readyCallback = function() {
+                settings.DOMReady = true;
+        };
+
         if ( ! settings.supports.simple || ! settings.supports.flag ) {
+                if ( document.addEventListener ) {
+                        document.addEventListener( 'DOMContentLoaded', function() { settings.readyCallback(); }, false );
+                }
+
                 src = settings.source || {};
 
                 if ( src.concatemoji ) {

src/wp-includes/js/wp-emoji.js

@@ -4 +4 @@
                 var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver,
 
                 /**
-                 * Flag to determine if the browser and the OS support emoji.
-                 *
-                 * @since 4.2.0
-                 *
-                 * @var Boolean
-                 */
-                supportsEmoji = false,
-
-                /**
-                 * Flag to determine if the browser and the OS support flag (two character) emoji.
-                 *
-                 * @since 4.2.0
-                 *
-                 * @var Boolean
-                 */
-                supportsFlagEmoji = false,
-
-                /**
                  * Flag to determine if we should replace emoji characters with images.
                  *
                  * @since 4.2.0
@@ -30 +12 @@
                  */
                 replaceEmoji = false,
 
-                isIE8 = window.navigator.userAgent.indexOf( 'IE 8' ) !== -1,
-
                 // Private
                 twemoji, timer,
+                loaded = false,
                 count = 0;
 
                 /**
@@ -42 +23 @@
                  * @since 4.2.0
                  */
                 function load() {
+                        if ( loaded ) {
+                                return;
+                        }
+
                         if ( typeof window.twemoji === 'undefined' ) {
                                 // Break if waiting for longer than 30 sec.
                                 if ( count > 600 ) {
@@ -57 +42 @@
                         }
 
                         twemoji = window.twemoji;
+                        loaded = true;
 
                         if ( MutationObserver ) {
                                 new MutationObserver( function( mutationRecords ) {
@@ -121 +107 @@
                                                         return false;
                                         }
 
-                                        if ( ! supportsFlagEmoji && supportsEmoji &&
+                                        if ( ! settings.supports.flag && settings.supports.simple &&
                                                 ! /^1f1(?:e[6-9a-f]|f[0-9a-f])-1f1(?:e[6-9a-f]|f[0-9a-f])$/.test( icon ) ) {
 
                                                 return false;
@@ -132 +118 @@
                         } );
                 }
 
-                // Load when the readyState changes to 'interactive', not 'complete'.
+                // Equivalent to body.onload.
                 function onLoad() {
-                        if ( ( ! isIE8 && 'interactive' === document.readyState ) || ( isIE8 && 'complete' === document.readyState ) ) {
+                        if ( 'complete' === document.readyState ) {
                                 load();
                         }
                 }
@@ -143 +129 @@
                  * Initialize our emoji support, and set up listeners.
                  */
                 if ( settings ) {
-                        supportsEmoji = window._wpemojiSettings.supports.simple;
-                        supportsFlagEmoji = window._wpemojiSettings.supports.flag;
-                        replaceEmoji = ! supportsEmoji || ! supportsFlagEmoji;
+                        replaceEmoji = ! settings.supports.simple || ! settings.supports.flag;
 
-                        if ( ( ! isIE8 && 'loading' === document.readyState ) || ( isIE8 && 'complete' !== document.readyState ) ) {
-                                if ( document.addEventListener ) {
-                                        document.addEventListener( 'readystatechange', onLoad, false );
-                                } else if ( document.attachEvent ) {
-                                        document.attachEvent( 'onreadystatechange', onLoad );
+                        if ( ! settings.DOMReady ) {
+                                settings.readyCallback = load;
+
+                                // Fallback
+                                if ( 'complete' !== document.readyState ) {
+                                        if ( document.addEventListener ) {
+                                                document.addEventListener( 'readystatechange', onLoad, false );
+                                        } else if ( document.attachEvent ) {
+                                                document.attachEvent( 'onreadystatechange', onLoad );
+                                        }
+                                } else {
+                                        load();
                                 }
                         } else {
                                 load();