Resolve _protect_identifiers()/protect_identifiers() usage issues
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php
index afdaef3..3c0850a 100644
--- a/system/database/drivers/cubrid/cubrid_driver.php
+++ b/system/database/drivers/cubrid/cubrid_driver.php
@@ -378,9 +378,8 @@
 		{
 			return 0;
 		}
-		
-		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
 
+		$query = $this->query($this->_count_string.$this->protect_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE));
 		if ($query->num_rows() == 0)
 		{
 			return 0;
@@ -427,7 +426,7 @@
 	 */
 	function _list_columns($table = '')
 	{
-		return "SHOW COLUMNS FROM ".$this->_protect_identifiers($table, TRUE, NULL, FALSE);
+		return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
index 85e7400..76002cb 100644
--- a/system/database/drivers/cubrid/cubrid_forge.php
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -93,11 +93,11 @@
 			{
 				$attributes = array_change_key_case($attributes, CASE_UPPER);
 
-				$sql .= "\n\t\"" . $this->db->_protect_identifiers($field) . "\"";
+				$sql .= "\n\t\"".$this->db->protect_identifiers($field).'"';
 
 				if (array_key_exists('NAME', $attributes))
 				{
-					$sql .= ' '.$this->db->_protect_identifiers($attributes['NAME']).' ';
+					$sql .= ' '.$this->db->protect_identifiers($attributes['NAME']).' ';
 				}
 
 				if (array_key_exists('TYPE', $attributes))
@@ -197,10 +197,9 @@
 		// If there is a PK defined
 		if (count($primary_keys) > 0)
 		{
-			$key_name = "pk_" . $table . "_" .
-				$this->db->_protect_identifiers(implode('_', $primary_keys));
-			
-			$primary_keys = $this->db->_protect_identifiers($primary_keys);
+			$key_name = 'pk_'.$table.'_'.$this->db->protect_identifiers(implode('_', $primary_keys));
+
+			$primary_keys = $this->db->protect_identifiers($primary_keys);
 			$sql .= ",\n\tCONSTRAINT " . $key_name . " PRIMARY KEY(" . implode(', ', $primary_keys) . ")";
 		}
 
@@ -210,15 +209,15 @@
 			{
 				if (is_array($key))
 				{
-					$key_name = $this->db->_protect_identifiers(implode('_', $key));
-					$key = $this->db->_protect_identifiers($key);
+					$key_name = $this->db->protect_identifiers(implode('_', $key));
+					$key = $this->db->protect_identifiers($key);
 				}
 				else
 				{
-					$key_name = $this->db->_protect_identifiers($key);
+					$key_name = $this->db->protect_identifiers($key);
 					$key = array($key_name);
 				}
-				
+
 				$sql .= ",\n\tKEY \"{$key_name}\" (" . implode(', ', $key) . ")";
 			}
 		}
@@ -258,19 +257,19 @@
 	 */
 	function _alter_table($alter_type, $table, $fields, $after_field = '')
 	{
-		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ";
+		$sql = 'ALTER TABLE '.$this->db->protect_identifiers($table).' '.$alter_type.' ';
 
 		// DROP has everything it needs now.
 		if ($alter_type == 'DROP')
 		{
-			return $sql.$this->db->_protect_identifiers($fields);
+			return $sql.$this->db->protect_identifiers($fields);
 		}
 
 		$sql .= $this->_process_fields($fields);
 
 		if ($after_field != '')
 		{
-			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+			return $sql.' AFTER '.$this->db->protect_identifiers($after_field);
 		}
 
 		return $sql;
@@ -290,11 +289,10 @@
 	 */
 	function _rename_table($table_name, $new_table_name)
 	{
-		$sql = 'RENAME TABLE '.$this->db->_protect_identifiers($table_name)." AS ".$this->db->_protect_identifiers($new_table_name);
-		return $sql;
+		return 'RENAME TABLE '.$this->db->protect_identifiers($table_name).' AS '.$this->db->protect_identifiers($new_table_name);
 	}
 
 }
 
 /* End of file cubrid_forge.php */
-/* Location: ./system/database/drivers/cubrid/cubrid_forge.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/cubrid/cubrid_forge.php */