3 files changed, 19 insertions, 3 deletions
diff --git a/kohana/helpers/feed.php b/kohana/helpers/feed.php
index 53b1fd15..c1e0b81f 100644
--- a/kohana/helpers/feed.php
+++ b/kohana/helpers/feed.php
@@ -20,6 +20,10 @@ class feed_Core {
 	 */
 	public static function parse($feed, $limit = 0)
 	{
+		// Check if SimpleXML is installed
+		if( ! function_exists('simplexml_load_file'))
+			throw new Kohana_User_Exception('Feed Error', 'SimpleXML must be installed!');
+		
 		// Make limit an integer
 		$limit = (int) $limit;
 
diff --git a/kohana/helpers/html.php b/kohana/helpers/html.php
index daf16a04..375baf38 100644
--- a/kohana/helpers/html.php
+++ b/kohana/helpers/html.php
@@ -50,6 +50,18 @@ class html_Core {
 	}
 
 	/**
+	 * Perform a html::specialchars() with additional URL specific encoding.
+	 *  
+	 * @param   string   string to convert
+	 * @param   boolean  encode existing entities
+	 * @return  string
+	 */
+	public static function specialurlencode($str, $double_encode = TRUE)
+	{
+		return str_replace(' ', '%20', html::specialchars($str, $double_encode));
+	}
+	
+	/**
 	 * Create HTML link anchors.
 	 *
 	 * @param   string  URL or URI string
@@ -80,7 +92,7 @@ class html_Core {
 
 		return
 		// Parsed URL
-		'<a href="'.html::specialchars($site_url, FALSE).'"'
+		'<a href="'.html::specialurlencode($site_url, FALSE).'"'
 		// Attributes empty? Use an empty string
 		.(is_array($attributes) ? html::attributes($attributes) : '').'>'
 		// Title empty? Use the parsed URL
@@ -100,7 +112,7 @@ class html_Core {
 	{
 		return
 		// Base URL + URI = full URL
-		'<a href="'.html::specialchars(url::base(FALSE, $protocol).$file, FALSE).'"'
+		'<a href="'.html::specialurlencode(url::base(FALSE, $protocol).$file, FALSE).'"'
 		// Attributes empty? Use an empty string
 		.(is_array($attributes) ? html::attributes($attributes) : '').'>'
 		// Title empty? Use the filename part of the URI
diff --git a/kohana/helpers/valid.php b/kohana/helpers/valid.php
index 916a0c19..88cca584 100644
--- a/kohana/helpers/valid.php
+++ b/kohana/helpers/valid.php
@@ -277,7 +277,7 @@ class valid_Core {
 	{
 		// Use localeconv to set the decimal_point value: Usually a comma or period.
 		$locale = localeconv();
-		return (preg_match('/^[-0-9'.$locale['decimal_point'].']++$/D', (string) $str));
+		return (preg_match('/^-?[0-9'.$locale['decimal_point'].']++$/D', (string) $str));
 	}
 
 	/**