Emoji: Re-add WordPress modifications to Twemoji.

This re-adds some WordPress specific modifications to the Twemoji library that were accidentally removed in [57626] and [61134].

Unprops desrosj.
Props dd32, paulkevan, ellatrix.
See #64184.

git-svn-id: https://develop.svn.wordpress.org/trunk@61180 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

src/js/_enqueues/vendor/twemoji.js

@@ -4,6 +4,11 @@ var twemoji = (function (
     https://github.com/jdecked/twemoji/blob/gh-pages/LICENSE
   */
 
+  /*
+   * Note: this file was modified in two places to add support for a doNotParse() callback.
+   * The modifications are surrounded by `// WP start` and `// WP end` comments.
+   */
+
   // WARNING:   this file is generated automatically via
   //            `node scripts/build.js`
   //            please update its `createTwemoji` function
@@ -305,6 +310,14 @@ var twemoji = (function (
       // should not be parsed as script, style, and others
       else if (nodeType === 1 && !('ownerSVGElement' in subnode) &&
           !shouldntBeParsed.test(subnode.nodeName.toLowerCase())) {
+
+        // WP start
+        // Use doNotParse() callback if set.
+        if ( twemoji.doNotParse && twemoji.doNotParse( subnode ) ) {
+            continue;
+        }
+        // WP end
+
         grabAllTextNodes(subnode, allText);
       }
     }
@@ -520,6 +533,14 @@ var twemoji = (function (
     if (!how || typeof how === 'function') {
       how = {callback: how};
     }
+
+	// WP start
+    // Allow passing of the doNotParse() callback in the settings.
+    // The callback is used in `grabAllTextNodes()` (DOM mode only) as a filter
+    // that allows bypassing of some of the text nodes. It gets the current subnode as argument.
+    twemoji.doNotParse = how.doNotParse;
+    // WP end
+
     // if first argument is string, inject html <img> tags
     // otherwise use the DOM tree and parse text nodes only
     return (typeof what === 'string' ? parseString : parseNode)(what, {