example filter with trust as html for angular 1.2+

autolink.js

app.filter('Autolink', ['$sce', function($sce){
	var urlPattern = /(http|ftp|https):\/\/[\w-]+(\.[\w-]+)+([\w.,@?^=%&:\/~+#-]*[\w@?^=%&\/~+#-])?/gi;
	return function(text, target, otherProp) {
		if(text === undefined ||
				text === null ) { return $sce.trustAsHtml(text);}
		angular.forEach(text.toString().match(urlPattern), function(url) {
			text = text.replace(url, "<a target=\"" + target + "\" href="+ url + ">" + url.substring(0,30) +"</a>");
		});
		return $sce.trustAsHtml(text);
	};
}]);