fix handling of hash Urls.

laravel/url.php

@@ -117,7 +117,13 @@ class URL {
 	 */
 	public static function to($url = '', $https = false)
 	{
-		if (filter_var($url, FILTER_VALIDATE_URL) !== false) return $url;
+		// If the given URL is already valid or begins with a hash, we'll just return
+		// the URL unchanged since it is already well formed. Otherwise we will add
+		// the base URL of the application and return the full URL.
+		if (static::valid($url) or starts_with($url, '#'))
+		{
+			return $url;
+		}
 
 		$root = static::base().'/'.Config::get('application.index');
 
@@ -310,4 +316,15 @@ class URL {
 		return trim($uri, '/');
 	}
 
+	/**
+	 * Determine if the given URL is valid.
+	 *
+	 * @param  string  $url
+	 * @return bool
+	 */
+	public static function valid($url)
+	{
+		return filter_var($url, FILTER_VALIDATE_URL) !== false;
+	}
+
 }