context: 	var autoWrap = function (textNode, tag) {		var rightText = textNode.nextSibling;		if (typeof(tag) == 'string') tag = editor._doc.createElement(tag);		var a = textNode.parentNode.insertBefore(tag, rightText);		HTMLArea.removeFromParent(textNode);		a.appendChild(textNode);		rightText.data += " ";		s.collapse(rightText, rightText.data.length);		HTMLArea._stopEvent(ev);		editor._unLink = function() {			var t = a.firstChild;			a.removeChild(t);			a.parentNode.insertBefore(t, a);			HTMLArea.removeFromParent(a);			t.parentNode.normalize();			editor._unLink = null;			editor._unlinkOnUndo = false;		};				editor._unlinkOnUndo = true;		return a;	};
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