<?php
error_reporting(0);
/**
 * GeSHi - Generic Syntax Highlighter
 * The GeSHi class for Generic Syntax Highlighting. Please refer to the
 * documentation at http://qbnz.com/highlighter/documentation.php for more
 * information about how to use this class.
 * For changes, release notes, TODOs etc, see the relevant files in the docs/
 * directory.
 *   This file is part of GeSHi.
 *  GeSHi is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  GeSHi is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  You should have received a copy of the GNU General Public License
 *  along with GeSHi; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * @package        geshi
 * @subpackage     core
 * @author         Nigel McNie <nigel@geshi.org>, Benny Baumann <BenBE@omorphia.de>
 * @copyright  (C) 2004 - 2007 Nigel McNie, (C) 2007 - 2008 Benny Baumann
 * @license        http://gnu.org/copyleft/gpl.html GNU GPL
 */
//
// GeSHi Constants
// You should use these constant names in your programs instead of
// their values - you never know when a value may change in a future
// version
//
/** The version of this GeSHi file */
define('GESHI_VERSION', '1.0.8.10');
// Define the root directory for the GeSHi code tree
if (!defined('GESHI_ROOT')) {
	/** The root directory for GeSHi */
	define('GESHI_ROOT', dirname(__FILE__).DIRECTORY_SEPARATOR);
}
/** The language file directory for GeSHi
 * @access private
 */
define('GESHI_LANG_ROOT', GESHI_ROOT.'geshi'.DIRECTORY_SEPARATOR);
// Define if GeSHi should be paranoid about security
if (!defined('GESHI_SECURITY_PARANOID')) {
	/** Tells GeSHi to be paranoid about security settings */
	define('GESHI_SECURITY_PARANOID', FALSE);
}
// Line numbers - use with enable_line_numbers()
/** Use no line numbers when building the result */
define('GESHI_NO_LINE_NUMBERS', 0);
/** Use normal line numbers when building the result */
define('GESHI_NORMAL_LINE_NUMBERS', 1);
/** Use fancy line numbers when building the result */
define('GESHI_FANCY_LINE_NUMBERS', 2);
// Container HTML type
/** Use nothing to surround the source */
define('GESHI_HEADER_NONE', 0);
/** Use a "div" to surround the source */
define('GESHI_HEADER_DIV', 1);
/** Use a "pre" to surround the source */
define('GESHI_HEADER_PRE', 2);
/** Use a pre to wrap lines when line numbers are enabled or to wrap the whole code. */
define('GESHI_HEADER_PRE_VALID', 3);
/**
 * Use a "table" to surround the source:
 *  <table>
 *    <thead><tr><td colspan="2">$header</td></tr></thead>
 *    <tbody><tr><td><pre>$linenumbers</pre></td><td><pre>$code></pre></td></tr></tbody>
 *    <tfooter><tr><td colspan="2">$footer</td></tr></tfoot>
 *  </table>
 * this is essentially only a workaround for Firefox, see sf#1651996 or take a look at
 * https://bugzilla.mozilla.org/show_bug.cgi?id=365805
 * @note when linenumbers are disabled this is essentially the same as GESHI_HEADER_PRE
 */
define('GESHI_HEADER_PRE_TABLE', 4);
// Capatalisation constants
/** Lowercase keywords found */
define('GESHI_CAPS_NO_CHANGE', 0);
/** Uppercase keywords found */
define('GESHI_CAPS_UPPER', 1);
/** Leave keywords found as the case that they are */
define('GESHI_CAPS_LOWER', 2);
// Link style constants
/** Links in the source in the :link state */
define('GESHI_LINK', 0);
/** Links in the source in the :hover state */
define('GESHI_HOVER', 1);
/** Links in the source in the :active state */
define('GESHI_ACTIVE', 2);
/** Links in the source in the :visited state */
define('GESHI_VISITED', 3);
// Important string starter/finisher
// Note that if you change these, they should be as-is: i.e., don't
// write them as if they had been run through htmlentities()
/** The starter for important parts of the source */
define('GESHI_START_IMPORTANT', '<BEGIN GeSHi>');
/** The ender for important parts of the source */
define('GESHI_END_IMPORTANT', '<END GeSHi>');
/**#@+
 * @access private
 */
// When strict mode applies for a language
/** Strict mode never applies (this is the most common) */
define('GESHI_NEVER', 0);
/** Strict mode *might* apply, and can be enabled or
 * disabled by {@link GeSHi->enable_strict_mode()}
 */
define('GESHI_MAYBE', 1);
/** Strict mode always applies */
define('GESHI_ALWAYS', 2);
// Advanced regexp handling constants, used in language files
/** The key of the regex array defining what to search for */
define('GESHI_SEARCH', 0);
/** The key of the regex array defining what bracket group in a
 * matched search to use as a replacement */
define('GESHI_REPLACE', 1);
/** The key of the regex array defining any modifiers to the regular expression */
define('GESHI_MODIFIERS', 2);
/** The key of the regex array defining what bracket group in a
 * matched search to put before the replacement */
define('GESHI_BEFORE', 3);
/** The key of the regex array defining what bracket group in a
 * matched search to put after the replacement */
define('GESHI_AFTER', 4);
/** The key of the regex array defining a custom keyword to use
 * for this regexp's html tag class */
define('GESHI_CLASS', 5);
/** Used in language files to mark comments */
define('GESHI_COMMENTS', 0);
/** Used to work around missing PHP features **/
define('GESHI_PHP_PRE_433', !(version_compare(PHP_VERSION, '4.3.3') === 1));
/** make sure we can call stripos **/
if (!function_exists('stripos')) {
	// the offset param of preg_match is not supported below PHP 4.3.3
	if (GESHI_PHP_PRE_433) {
		/**
		 * @ignore
		 */
		function stripos($haystack, $needle, $offset = NULL) {
			if (!is_null($offset)) {
				$haystack = substr($haystack, $offset);
			}
			if (preg_match('/'.preg_quote($needle, '/').'/', $haystack, $match, PREG_OFFSET_CAPTURE)) {
				return $match[0][1];
			}
			return FALSE;
		}
	} else {
		/**
		 * @ignore
		 */
		function stripos($haystack, $needle, $offset = NULL) {
			if (preg_match('/'.preg_quote($needle, '/').'/', $haystack, $match, PREG_OFFSET_CAPTURE, $offset)) {
				return $match[0][1];
			}
			return FALSE;
		}
	}
}
/** some old PHP / PCRE subpatterns only support up to xxx subpatterns in
 * regular expressions. Set this to false if your PCRE lib is up to date
 * @see GeSHi->optimize_regexp_list()
 **/
define('GESHI_MAX_PCRE_SUBPATTERNS', 500);
/** it's also important not to generate too long regular expressions
 * be generous here... but keep in mind, that when reaching this limit we
 * still have to close open patterns. 12k should do just fine on a 16k limit.
 * @see GeSHi->optimize_regexp_list()
 **/
define('GESHI_MAX_PCRE_LENGTH', 12288);
//Number format specification
/** Basic number format for integers */
define('GESHI_NUMBER_INT_BASIC', 1); //Default integers \d+
/** Enhanced number format for integers like seen in C */
define('GESHI_NUMBER_INT_CSTYLE', 2); //Default C-Style \d+[lL]?
/** Number format to highlight binary numbers with a suffix "b" */
define('GESHI_NUMBER_BIN_SUFFIX', 16); //[01]+[bB]
/** Number format to highlight binary numbers with a prefix % */
define('GESHI_NUMBER_BIN_PREFIX_PERCENT', 32); //%[01]+
/** Number format to highlight binary numbers with a prefix 0b (C) */
define('GESHI_NUMBER_BIN_PREFIX_0B', 64); //0b[01]+
/** Number format to highlight octal numbers with a leading zero */
define('GESHI_NUMBER_OCT_PREFIX', 256); //0[0-7]+
/** Number format to highlight octal numbers with a prefix 0o (logtalk) */
define('GESHI_NUMBER_OCT_PREFIX_0O', 512); //0[0-7]+
/** Number format to highlight octal numbers with a leading @ (Used in HiSofts Devpac series). */
define('GESHI_NUMBER_OCT_PREFIX_AT', 1024); //@[0-7]+
/** Number format to highlight octal numbers with a suffix of o */
define('GESHI_NUMBER_OCT_SUFFIX', 2048); //[0-7]+[oO]
/** Number format to highlight hex numbers with a prefix 0x */
define('GESHI_NUMBER_HEX_PREFIX', 4096); //0x[0-9a-fA-F]+
/** Number format to highlight hex numbers with a prefix $ */
define('GESHI_NUMBER_HEX_PREFIX_DOLLAR', 8192); //$[0-9a-fA-F]+
/** Number format to highlight hex numbers with a suffix of h */
define('GESHI_NUMBER_HEX_SUFFIX', 16384); //[0-9][0-9a-fA-F]*h
/** Number format to highlight floating-point numbers without support for scientific notation */
define('GESHI_NUMBER_FLT_NONSCI', 65536); //\d+\.\d+
/** Number format to highlight floating-point numbers without support for scientific notation */
define('GESHI_NUMBER_FLT_NONSCI_F', 131072); //\d+(\.\d+)?f
/** Number format to highlight floating-point numbers with support for scientific notation (E) and optional leading zero */
define('GESHI_NUMBER_FLT_SCI_SHORT', 262144); //\.\d+e\d+
/** Number format to highlight floating-point numbers with support for scientific notation (E) and required leading digit */
define('GESHI_NUMBER_FLT_SCI_ZERO', 524288); //\d+(\.\d+)?e\d+
//Custom formats are passed by RX array
// Error detection - use these to analyse faults
/** No sourcecode to highlight was specified
 * @deprecated
 */
define('GESHI_ERROR_NO_INPUT', 1);
/** The language specified does not exist */
define('GESHI_ERROR_NO_SUCH_LANG', 2);
/** GeSHi could not open a file for reading (generally a language file) */
define('GESHI_ERROR_FILE_NOT_READABLE', 3);
/** The header type passed to {@link GeSHi->set_header_type()} was invalid */
define('GESHI_ERROR_INVALID_HEADER_TYPE', 4);
/** The line number type passed to {@link GeSHi->enable_line_numbers()} was invalid */
define('GESHI_ERROR_INVALID_LINE_NUMBER_TYPE', 5);
/**#@-*/

/**
 * The GeSHi Class.
 * Please refer to the documentation for GeSHi 1.0.X that is available
 * at http://qbnz.com/highlighter/documentation.php for more information
 * about how to use this class.
 * @package       geshi
 * @author        Nigel McNie <nigel@geshi.org>, Benny Baumann <BenBE@omorphia.de>
 * @copyright (C) 2004 - 2007 Nigel McNie, (C) 2007 - 2008 Benny Baumann
 */
class GeSHi {
	/**#@+
	 * @access private
	 */
	/**
	 * The source code to highlight
	 * @var string
	 */
	var $source = '';
	/**
	 * The language to use when highlighting
	 * @var string
	 */
	var $language = '';
	/**
	 * The data for the language used
	 * @var array
	 */
	var $language_data = array();
	/**
	 * The path to the language files
	 * @var string
	 */
	var $language_path = GESHI_LANG_ROOT;
	/**
	 * The error message associated with an error
	 * @var string
	 * @todo check err reporting works
	 */
	var $error = FALSE;
	/**
	 * Possible error messages
	 * @var array
	 */
	var $error_messages = array(GESHI_ERROR_NO_SUCH_LANG => 'GeSHi could not find the language {LANGUAGE} (using path {PATH})',
								GESHI_ERROR_FILE_NOT_READABLE => 'The file specified for load_from_file was not readable',
								GESHI_ERROR_INVALID_HEADER_TYPE => 'The header type specified is invalid',
								GESHI_ERROR_INVALID_LINE_NUMBER_TYPE => 'The line number type specified is invalid');
	/**
	 * Whether highlighting is strict or not
	 * @var boolean
	 */
	var $strict_mode = FALSE;
	/**
	 * Whether to use CSS classes in output
	 * @var boolean
	 */
	var $use_classes = FALSE;
	/**
	 * The type of header to use. Can be one of the following
	 * values:
	 * - GESHI_HEADER_PRE: Source is outputted in a "pre" HTML element.
	 * - GESHI_HEADER_DIV: Source is outputted in a "div" HTML element.
	 * - GESHI_HEADER_NONE: No header is outputted.
	 * @var int
	 */
	var $header_type = GESHI_HEADER_PRE;
	/**
	 * Array of permissions for which lexics should be highlighted
	 * @var array
	 */
	var $lexic_permissions = array('KEYWORDS' => array(), 'COMMENTS' => array('MULTI' => TRUE), 'REGEXPS' => array(),
								   'ESCAPE_CHAR' => TRUE, 'BRACKETS' => TRUE, 'SYMBOLS' => FALSE, 'STRINGS' => TRUE,
								   'NUMBERS' => TRUE, 'METHODS' => TRUE, 'SCRIPT' => TRUE);
	/**
	 * The time it took to parse the code
	 * @var double
	 */
	var $time = 0;
	/**
	 * The content of the header block
	 * @var string
	 */
	var $header_content = '';
	/**
	 * The content of the footer block
	 * @var string
	 */
	var $footer_content = '';
	/**
	 * The style of the header block
	 * @var string
	 */
	var $header_content_style = '';
	/**
	 * The style of the footer block
	 * @var string
	 */
	var $footer_content_style = '';
	/**
	 * Tells if a block around the highlighted source should be forced
	 * if not using line numbering
	 * @var boolean
	 */
	var $force_code_block = FALSE;
	/**
	 * The styles for hyperlinks in the code
	 * @var array
	 */
	var $link_styles = array();
	/**
	 * Whether important blocks should be recognised or not
	 * @var boolean
	 * @deprecated
	 * @todo REMOVE THIS FUNCTIONALITY!
	 */
	var $enable_important_blocks = FALSE;
	/**
	 * Styles for important parts of the code
	 * @var string
	 * @deprecated
	 * @todo As above - rethink the whole idea of important blocks as it is buggy and
	 * will be hard to implement in 1.2
	 */
	var $important_styles = 'font-weight: bold; color: red;'; // Styles for important parts of the code
	/**
	 * Whether CSS IDs should be added to the code
	 * @var boolean
	 */
	var $add_ids = FALSE;
	/**
	 * Lines that should be highlighted extra
	 * @var array
	 */
	var $highlight_extra_lines = array();
	/**
	 * Styles of lines that should be highlighted extra
	 * @var array
	 */
	var $highlight_extra_lines_styles = array();
	/**
	 * Styles of extra-highlighted lines
	 * @var string
	 */
	var $highlight_extra_lines_style = 'background-color: #ffc;';
	/**
	 * The line ending
	 * If null, nl2br() will be used on the result string.
	 * Otherwise, all instances of \n will be replaced with $line_ending
	 * @var string
	 */
	var $line_ending = NULL;
	/**
	 * Number at which line numbers should start at
	 * @var int
	 */
	var $line_numbers_start = 1;
	/**
	 * The overall style for this code block
	 * @var string
	 */
	var $overall_style = 'font-family:monospace;';
	/**
	 *  The style for the actual code
	 * @var string
	 */
	var $code_style = 'font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;';
	/**
	 * The overall class for this code block
	 * @var string
	 */
	var $overall_class = '';
	/**
	 * The overall ID for this code block
	 * @var string
	 */
	var $overall_id = '';
	/**
	 * Line number styles
	 * @var string
	 */
	var $line_style1 = 'font-weight: normal; vertical-align:top;';
	/**
	 * Line number styles for fancy lines
	 * @var string
	 */
	var $line_style2 = 'font-weight: bold; vertical-align:top;';
	/**
	 * Style for line numbers when GESHI_HEADER_PRE_TABLE is chosen
	 * @var string
	 */
	var $table_linenumber_style = 'width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;';
	/**
	 * Flag for how line numbers are displayed
	 * @var boolean
	 */
	var $line_numbers = GESHI_NO_LINE_NUMBERS;
	/**
	 * Flag to decide if multi line spans are allowed. Set it to false to make sure
	 * each tag is closed before and reopened after each linefeed.
	 * @var boolean
	 */
	var $allow_multiline_span = TRUE;
	/**
	 * The "nth" value for fancy line highlighting
	 * @var int
	 */
	var $line_nth_row = 0;
	/**
	 * The size of tab stops
	 * @var int
	 */
	var $tab_width = 8;
	/**
	 * Should we use language-defined tab stop widths?
	 * @var int
	 */
	var $use_language_tab_width = FALSE;
	/**
	 * Default target for keyword links
	 * @var string
	 */
	var $link_target = '';
	/**
	 * The encoding to use for entity encoding
	 * NOTE: Used with Escape Char Sequences to fix UTF-8 handling (cf. SF#2037598)
	 * @var string
	 */
	var $encoding = 'utf-8';
	/**
	 * Should keywords be linked?
	 * @var boolean
	 */
	var $keyword_links = TRUE;
	/**
	 * Currently loaded language file
	 * @var string
	 * @since 1.0.7.22
	 */
	var $loaded_language = '';
	/**
	 * Wether the caches needed for parsing are built or not
	 * @var bool
	 * @since 1.0.8
	 */
	var $parse_cache_built = FALSE;
	/**
	 * Work around for Suhosin Patch with disabled /e modifier
	 * Note from suhosins author in config file:
	 * <blockquote>
	 *   The /e modifier inside <code>preg_replace()</code> allows code execution.
	 *   Often it is the cause for remote code execution exploits. It is wise to
	 *   deactivate this feature and test where in the application it is used.
	 *   The developer using the /e modifier should be made aware that he should
	 *   use <code>preg_replace_callback()</code> instead
	 * </blockquote>
	 * @var array
	 * @since 1.0.8
	 */
	var $_kw_replace_group = 0;
	var $_rx_key = 0;
	/**
	 * some "callback parameters" for handle_multiline_regexps
	 * @since  1.0.8
	 * @access private
	 * @var string
	 */
	var $_hmr_before = '';
	var $_hmr_replace = '';
	var $_hmr_after = '';
	var $_hmr_key = 0;

	/**#@-*/
	/**
	 * Creates a new GeSHi object, with source and language
	 * @param string The source code to highlight
	 * @param string The language to highlight the source with
	 * @param string The path to the language file directory. <b>This
	 *               is deprecated!</b> I've backported the auto path
	 *               detection from the 1.1.X dev branch, so now it
	 *               should be automatically set correctly. If you have
	 *               renamed the language directory however, you will
	 *               still need to set the path using this parameter or
	 *               {@link GeSHi->set_language_path()}
	 * @since 1.0.0
	 */
	function __construct($source = '', $language = '', $path = '') {
		if (!empty($source)) {
			$this->set_source($source);
		}
		if (!empty($language)) {
			$this->set_language($language);
		}
		$this->set_language_path($path);
	}

	/**
	 * Returns an error message associated with the last GeSHi operation,
	 * or false if no error has occured
	 * @return string|false An error message if there has been an error, else false
	 * @since  1.0.0
	 */
	function error() {
		if ($this->error) {
			//Put some template variables for debugging here ...
			$debug_tpl_vars = array('{LANGUAGE}' => $this->language, '{PATH}' => $this->language_path);
			$msg = str_replace(array_keys($debug_tpl_vars), array_values($debug_tpl_vars), $this->error_messages[$this->error]);
			return "<br /><strong>GeSHi Error:</strong> $msg (code {$this->error})<br />";
		}
		return FALSE;
	}

	/**
	 * Gets a human-readable language name (thanks to Simon Patterson
	 * for the idea :))
	 * @return string The name for the current language
	 * @since  1.0.2
	 */
	function get_language_name() {
		if (GESHI_ERROR_NO_SUCH_LANG == $this->error) {
			return $this->language_data['LANG_NAME'].' (Unknown Language)';
		}
		return $this->language_data['LANG_NAME'];
	}

	/**
	 * Sets the source code for this object
	 * @param string The source code to highlight
	 * @since 1.0.0
	 */
	function set_source($source) {
		$this->source = $source;
		$this->highlight_extra_lines = array();
	}

	/**
	 * Sets the language for this object
	 * @note  since 1.0.8 this function won't reset language-settings by default anymore!
	 *       if you need this set $force_reset = true
	 * @param string The name of the language to use
	 * @since 1.0.0
	 */
	function set_language($language, $force_reset = FALSE) {
		if ($force_reset) {
			$this->loaded_language = FALSE;
		}
		//Clean up the language name to prevent malicious code injection
		$language = preg_replace('#[^a-zA-Z0-9\-_]#', '', $language);
		$language = strtolower($language);
		//Retreive the full filename
		$file_name = $this->language_path.$language.'.php';
		if ($file_name == $this->loaded_language) {
			// this language is already loaded!
			return;
		}
		$this->language = $language;
		$this->error = FALSE;
		$this->strict_mode = GESHI_NEVER;
		//Check if we can read the desired file
		if (!is_readable($file_name)) {
			$this->error = GESHI_ERROR_NO_SUCH_LANG;
			return;
		}
		// Load the language for parsing
		$this->load_language($file_name);
	}

	/**
	 * Sets the path to the directory containing the language files. Note
	 * that this path is relative to the directory of the script that included
	 * geshi.php, NOT geshi.php itself.
	 * @param string The path to the language directory
	 * @since      1.0.0
	 * @deprecated The path to the language files should now be automatically
	 *               detected, so this method should no longer be needed. The
	 *               1.1.X branch handles manual setting of the path differently
	 *               so this method will disappear in 1.2.0.
	 */
	function set_language_path($path) {
		if (strpos($path, ':')) {
			//Security Fix to prevent external directories using fopen wrappers.
			if (DIRECTORY_SEPARATOR == "\\") {
				if (!preg_match('#^[a-zA-Z]:#', $path) || FALSE !== strpos($path, ':', 2)) {
					return;
				}
			} else {
				return;
			}
		}
		if (preg_match('#[^/a-zA-Z0-9_\.\-\\\s:]#', $path)) {
			//Security Fix to prevent external directories using fopen wrappers.
			return;
		}
		if (GESHI_SECURITY_PARANOID && FALSE !== strpos($path, '/.')) {
			//Security Fix to prevent external directories using fopen wrappers.
			return;
		}
		if (GESHI_SECURITY_PARANOID && FALSE !== strpos($path, '..')) {
			//Security Fix to prevent external directories using fopen wrappers.
			return;
		}
		if ($path) {
			$this->language_path = ('/' == $path[strlen($path)-1]) ? $path : $path.'/';
			$this->set_language($this->language); // otherwise set_language_path has no effect
		}
	}

	/**
	 * Get supported langs or an associative array lang=>full_name.
	 * @param boolean $longnames
	 * @return array
	 */
	function get_supported_languages($full_names = FALSE) {
		// return array
		$back = array();
		// we walk the lang root
		$dir = dir($this->language_path);
		// foreach entry
		while (FALSE !== ($entry = $dir->read())) {
			$full_path = $this->language_path.$entry;
			// Skip all dirs
			if (is_dir($full_path)) {
				continue;
			}
			// we only want lang.php files
			if (!preg_match('/^([^.]+)\.php$/', $entry, $matches)) {
				continue;
			}
			// Raw lang name is here
			$langname = $matches[1];
			// We want the fullname too?
			if ($full_names === TRUE) {
				if (FALSE !== ($fullname = $this->get_language_fullname($langname))) {
					$back[$langname] = $fullname; // we go associative
				}
			} else {
				// just store raw langname
				$back[] = $langname;
			}
		}
		$dir->close();
		return $back;
	}

	/**
	 * Get full_name for a lang or false.
	 * @param string $language short langname (html4strict for example)
	 * @return mixed
	 */
	function get_language_fullname($language) {
		//Clean up the language name to prevent malicious code injection
		$language = preg_replace('#[^a-zA-Z0-9\-_]#', '', $language);
		$language = strtolower($language);
		// get fullpath-filename for a langname
		$fullpath = $this->language_path.$language.'.php';
		// we need to get contents :S
		if (FALSE === ($data = file_get_contents($fullpath))) {
			$this->error = sprintf('Geshi::get_lang_fullname() Unknown Language: %s', $language);
			return FALSE;
		}
		// match the langname
		if (!preg_match('/\'LANG_NAME\'\s*=>\s*\'((?:[^\']|\\\')+)\'/', $data, $matches)) {
			$this->error = sprintf('Geshi::get_lang_fullname(%s): Regex can not detect language', $language);
			return FALSE;
		}
		// return fullname for langname
		return stripcslashes($matches[1]);
	}

	/**
	 * Sets the type of header to be used.
	 * If GESHI_HEADER_DIV is used, the code is surrounded in a "div".This
	 * means more source code but more control over tab width and line-wrapping.
	 * GESHI_HEADER_PRE means that a "pre" is used - less source, but less
	 * control. Default is GESHI_HEADER_PRE.
	 * From 1.0.7.2, you can use GESHI_HEADER_NONE to specify that no header code
	 * should be outputted.
	 * @param int The type of header to be used
	 * @since 1.0.0
	 */
	function set_header_type($type) {
		//Check if we got a valid header type
		if (!in_array($type, array(GESHI_HEADER_NONE, GESHI_HEADER_DIV, GESHI_HEADER_PRE, GESHI_HEADER_PRE_VALID,
								   GESHI_HEADER_PRE_TABLE))
		) {
			$this->error = GESHI_ERROR_INVALID_HEADER_TYPE;
			return;
		}
		//Set that new header type
		$this->header_type = $type;
	}

	/**
	 * Sets the styles for the code that will be outputted
	 * when this object is parsed. The style should be a
	 * string of valid stylesheet declarations
	 * @param string  The overall style for the outputted code block
	 * @param boolean Whether to merge the styles with the current styles or not
	 * @since 1.0.0
	 */
	function set_overall_style($style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->overall_style = $style;
		} else {
			$this->overall_style .= $style;
		}
	}

	/**
	 * Sets the overall classname for this block of code. This
	 * class can then be used in a stylesheet to style this object's
	 * output
	 * @param string The class name to use for this block of code
	 * @since 1.0.0
	 */
	function set_overall_class($class) {
		$this->overall_class = $class;
	}

	/**
	 * Sets the overall id for this block of code. This id can then
	 * be used in a stylesheet to style this object's output
	 * @param string The ID to use for this block of code
	 * @since 1.0.0
	 */
	function set_overall_id($id) {
		$this->overall_id = $id;
	}

	/**
	 * Sets whether CSS classes should be used to highlight the source. Default
	 * is off, calling this method with no arguments will turn it on
	 * @param boolean Whether to turn classes on or not
	 * @since 1.0.0
	 */
	function enable_classes($flag = TRUE) {
		$this->use_classes = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the style for the actual code. This should be a string
	 * containing valid stylesheet declarations. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * Note: Use this method to override any style changes you made to
	 * the line numbers if you are using line numbers, else the line of
	 * code will have the same style as the line number! Consult the
	 * GeSHi documentation for more information about this.
	 * @param string  The style to use for actual code
	 * @param boolean Whether to merge the current styles with the new styles
	 * @since 1.0.2
	 */
	function set_code_style($style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->code_style = $style;
		} else {
			$this->code_style .= $style;
		}
	}

	/**
	 * Sets the styles for the line numbers.
	 * @param                string  The style for the line numbers that are "normal"
	 * @param string|boolean If      a string, this is the style of the line
	 *                               numbers that are "fancy", otherwise if boolean then this
	 *                               defines whether the normal styles should be merged with the
	 *                               new normal styles or not
	 * @param                boolean If set, is the flag for whether to merge the "fancy"
	 *                               styles with the current styles or not
	 * @since 1.0.2
	 */
	function set_line_style($style1, $style2 = '', $preserve_defaults = FALSE) {
		//Check if we got 2 or three parameters
		if (is_bool($style2)) {
			$preserve_defaults = $style2;
			$style2 = '';
		}
		//Actually set the new styles
		if (!$preserve_defaults) {
			$this->line_style1 = $style1;
			$this->line_style2 = $style2;
		} else {
			$this->line_style1 .= $style1;
			$this->line_style2 .= $style2;
		}
	}

	/**
	 * Sets whether line numbers should be displayed.
	 * Valid values for the first parameter are:
	 *  - GESHI_NO_LINE_NUMBERS: Line numbers will not be displayed
	 *  - GESHI_NORMAL_LINE_NUMBERS: Line numbers will be displayed
	 *  - GESHI_FANCY_LINE_NUMBERS: Fancy line numbers will be displayed
	 * For fancy line numbers, the second parameter is used to signal which lines
	 * are to be fancy. For example, if the value of this parameter is 5 then every
	 * 5th line will be fancy.
	 * @param int How line numbers should be displayed
	 * @param int Defines which lines are fancy
	 * @since 1.0.0
	 */
	function enable_line_numbers($flag, $nth_row = 5) {
		if (GESHI_NO_LINE_NUMBERS != $flag && GESHI_NORMAL_LINE_NUMBERS != $flag && GESHI_FANCY_LINE_NUMBERS != $flag) {
			$this->error = GESHI_ERROR_INVALID_LINE_NUMBER_TYPE;
		}
		$this->line_numbers = $flag;
		$this->line_nth_row = $nth_row;
	}

	/**
	 * Sets wether spans and other HTML markup generated by GeSHi can
	 * span over multiple lines or not. Defaults to true to reduce overhead.
	 * Set it to false if you want to manipulate the output or manually display
	 * the code in an ordered list.
	 * @param boolean Wether multiline spans are allowed or not
	 * @since 1.0.7.22
	 */
	function enable_multiline_span($flag) {
		$this->allow_multiline_span = (bool)$flag;
	}

	/**
	 * Get current setting for multiline spans, see GeSHi->enable_multiline_span().
	 * @see enable_multiline_span
	 * @return bool
	 */
	function get_multiline_span() {
		return $this->allow_multiline_span;
	}

	/**
	 * Sets the style for a keyword group. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param int     The key of the keyword group to change the styles of
	 * @param string  The style to make the keywords
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since 1.0.0
	 */
	function set_keyword_group_style($key, $style, $preserve_defaults = FALSE) {
		//Set the style for this keyword group
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['KEYWORDS'][$key] = $style;
		} else {
			$this->language_data['STYLES']['KEYWORDS'][$key] .= $style;
		}
		//Update the lexic permissions
		if (!isset($this->lexic_permissions['KEYWORDS'][$key])) {
			$this->lexic_permissions['KEYWORDS'][$key] = TRUE;
		}
	}

	/**
	 * Turns highlighting on/off for a keyword group
	 * @param int     The key of the keyword group to turn on or off
	 * @param boolean Whether to turn highlighting for that group on or off
	 * @since 1.0.0
	 */
	function set_keyword_group_highlighting($key, $flag = TRUE) {
		$this->lexic_permissions['KEYWORDS'][$key] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for comment groups.  If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param int     The key of the comment group to change the styles of
	 * @param string  The style to make the comments
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since 1.0.0
	 */
	function set_comments_style($key, $style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['COMMENTS'][$key] = $style;
		} else {
			$this->language_data['STYLES']['COMMENTS'][$key] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for comment groups
	 * @param int     The key of the comment group to turn on or off
	 * @param boolean Whether to turn highlighting for that group on or off
	 * @since 1.0.0
	 */
	function set_comments_highlighting($key, $flag = TRUE) {
		$this->lexic_permissions['COMMENTS'][$key] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for escaped characters. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the escape characters
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since 1.0.0
	 */
	function set_escape_characters_style($style, $preserve_defaults = FALSE, $group = 0) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['ESCAPE_CHAR'][$group] = $style;
		} else {
			$this->language_data['STYLES']['ESCAPE_CHAR'][$group] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for escaped characters
	 * @param boolean Whether to turn highlighting for escape characters on or off
	 * @since 1.0.0
	 */
	function set_escape_characters_highlighting($flag = TRUE) {
		$this->lexic_permissions['ESCAPE_CHAR'] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for brackets. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * This method is DEPRECATED: use set_symbols_style instead.
	 * This method will be removed in 1.2.X
	 * @param string  The style to make the brackets
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since      1.0.0
	 * @deprecated In favour of set_symbols_style
	 */
	function set_brackets_style($style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['BRACKETS'][0] = $style;
		} else {
			$this->language_data['STYLES']['BRACKETS'][0] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for brackets
	 * This method is DEPRECATED: use set_symbols_highlighting instead.
	 * This method will be remove in 1.2.X
	 * @param boolean Whether to turn highlighting for brackets on or off
	 * @since      1.0.0
	 * @deprecated In favour of set_symbols_highlighting
	 */
	function set_brackets_highlighting($flag) {
		$this->lexic_permissions['BRACKETS'] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for symbols. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the symbols
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @param int     Tells the group of symbols for which style should be set.
	 * @since 1.0.1
	 */
	function set_symbols_style($style, $preserve_defaults = FALSE, $group = 0) {
		// Update the style of symbols
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['SYMBOLS'][$group] = $style;
		} else {
			$this->language_data['STYLES']['SYMBOLS'][$group] .= $style;
		}
		// For backward compatibility
		if (0 == $group) {
			$this->set_brackets_style($style, $preserve_defaults);
		}
	}

	/**
	 * Turns highlighting on/off for symbols
	 * @param boolean Whether to turn highlighting for symbols on or off
	 * @since 1.0.0
	 */
	function set_symbols_highlighting($flag) {
		// Update lexic permissions for this symbol group
		$this->lexic_permissions['SYMBOLS'] = ($flag) ? TRUE : FALSE;
		// For backward compatibility
		$this->set_brackets_highlighting($flag);
	}

	/**
	 * Sets the styles for strings. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the escape characters
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @param int     Tells the group of strings for which style should be set.
	 * @since 1.0.0
	 */
	function set_strings_style($style, $preserve_defaults = FALSE, $group = 0) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['STRINGS'][$group] = $style;
		} else {
			$this->language_data['STYLES']['STRINGS'][$group] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for strings
	 * @param boolean Whether to turn highlighting for strings on or off
	 * @since 1.0.0
	 */
	function set_strings_highlighting($flag) {
		$this->lexic_permissions['STRINGS'] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for strict code blocks. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the script blocks
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @param int     Tells the group of script blocks for which style should be set.
	 * @since 1.0.8.4
	 */
	function set_script_style($style, $preserve_defaults = FALSE, $group = 0) {
		// Update the style of symbols
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['SCRIPT'][$group] = $style;
		} else {
			$this->language_data['STYLES']['SCRIPT'][$group] .= $style;
		}
	}

	/**
	 * Sets the styles for numbers. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the numbers
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @param int     Tells the group of numbers for which style should be set.
	 * @since 1.0.0
	 */
	function set_numbers_style($style, $preserve_defaults = FALSE, $group = 0) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['NUMBERS'][$group] = $style;
		} else {
			$this->language_data['STYLES']['NUMBERS'][$group] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for numbers
	 * @param boolean Whether to turn highlighting for numbers on or off
	 * @since 1.0.0
	 */
	function set_numbers_highlighting($flag) {
		$this->lexic_permissions['NUMBERS'] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for methods. $key is a number that references the
	 * appropriate "object splitter" - see the language file for the language
	 * you are highlighting to get this number. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param int     The key of the object splitter to change the styles of
	 * @param string  The style to make the methods
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since 1.0.0
	 */
	function set_methods_style($key, $style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['METHODS'][$key] = $style;
		} else {
			$this->language_data['STYLES']['METHODS'][$key] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for methods
	 * @param boolean Whether to turn highlighting for methods on or off
	 * @since 1.0.0
	 */
	function set_methods_highlighting($flag) {
		$this->lexic_permissions['METHODS'] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets the styles for regexps. If $preserve_defaults is
	 * true, then styles are merged with the default styles, with the
	 * user defined styles having priority
	 * @param string  The style to make the regular expression matches
	 * @param boolean Whether to merge the new styles with the old or just
	 *                to overwrite them
	 * @since 1.0.0
	 */
	function set_regexps_style($key, $style, $preserve_defaults = FALSE) {
		if (!$preserve_defaults) {
			$this->language_data['STYLES']['REGEXPS'][$key] = $style;
		} else {
			$this->language_data['STYLES']['REGEXPS'][$key] .= $style;
		}
	}

	/**
	 * Turns highlighting on/off for regexps
	 * @param int     The key of the regular expression group to turn on or off
	 * @param boolean Whether to turn highlighting for the regular expression group on or off
	 * @since 1.0.0
	 */
	function set_regexps_highlighting($key, $flag) {
		$this->lexic_permissions['REGEXPS'][$key] = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Sets whether a set of keywords are checked for in a case sensitive manner
	 * @param int     The key of the keyword group to change the case sensitivity of
	 * @param boolean Whether to check in a case sensitive manner or not
	 * @since 1.0.0
	 */
	function set_case_sensitivity($key, $case) {
		$this->language_data['CASE_SENSITIVE'][$key] = ($case) ? TRUE : FALSE;
	}

	/**
	 * Sets the case that keywords should use when found. Use the constants:
	 *  - GESHI_CAPS_NO_CHANGE: leave keywords as-is
	 *  - GESHI_CAPS_UPPER: convert all keywords to uppercase where found
	 *  - GESHI_CAPS_LOWER: convert all keywords to lowercase where found
	 * @param int A constant specifying what to do with matched keywords
	 * @since 1.0.1
	 */
	function set_case_keywords($case) {
		if (in_array($case, array(GESHI_CAPS_NO_CHANGE, GESHI_CAPS_UPPER, GESHI_CAPS_LOWER))) {
			$this->language_data['CASE_KEYWORDS'] = $case;
		}
	}

	/**
	 * Sets how many spaces a tab is substituted for
	 * Widths below zero are ignored
	 * @param int The tab width
	 * @since 1.0.0
	 */
	function set_tab_width($width) {
		$this->tab_width = intval($width);
		//Check if it fit's the constraints:
		if ($this->tab_width < 1) {
			//Return it to the default
			$this->tab_width = 8;
		}
	}

	/**
	 * Sets whether or not to use tab-stop width specifed by language
	 * @param boolean Whether to use language-specific tab-stop widths
	 * @since 1.0.7.20
	 */
	function set_use_language_tab_width($use) {
		$this->use_language_tab_width = (bool)$use;
	}

	/**
	 * Returns the tab width to use, based on the current language and user
	 * preference
	 * @return int Tab width
	 * @since 1.0.7.20
	 */
	function get_real_tab_width() {
		if (!$this->use_language_tab_width || !isset($this->language_data['TAB_WIDTH'])) {
			return $this->tab_width;
		} else {
			return $this->language_data['TAB_WIDTH'];
		}
	}

	/**
	 * Enables/disables strict highlighting. Default is off, calling this
	 * method without parameters will turn it on. See documentation
	 * for more details on strict mode and where to use it.
	 * @param boolean Whether to enable strict mode or not
	 * @since 1.0.0
	 */
	function enable_strict_mode($mode = TRUE) {
		if (GESHI_MAYBE == $this->language_data['STRICT_MODE_APPLIES']) {
			$this->strict_mode = ($mode) ? GESHI_ALWAYS : GESHI_NEVER;
		}
	}

	/**
	 * Disables all highlighting
	 * @since      1.0.0
	 * @todo       Rewrite with array traversal
	 * @deprecated In favour of enable_highlighting
	 */
	function disable_highlighting() {
		$this->enable_highlighting(FALSE);
	}

	/**
	 * Enables all highlighting
	 * The optional flag parameter was added in version 1.0.7.21 and can be used
	 * to enable (true) or disable (false) all highlighting.
	 * @since 1.0.0
	 * @param boolean A flag specifying whether to enable or disable all highlighting
	 * @todo  Rewrite with array traversal
	 */
	function enable_highlighting($flag = TRUE) {
		$flag = $flag ? TRUE : FALSE;
		foreach ($this->lexic_permissions as $key => $value) {
			if (is_array($value)) {
				foreach ($value as $k => $v) {
					$this->lexic_permissions[$key][$k] = $flag;
				}
			} else {
				$this->lexic_permissions[$key] = $flag;
			}
		}
		// Context blocks
		$this->enable_important_blocks = $flag;
	}

	/**
	 * Given a file extension, this method returns either a valid geshi language
	 * name, or the empty string if it couldn't be found
	 * @param string The extension to get a language name for
	 * @param array  A lookup array to use instead of the default one
	 * @since 1.0.5
	 * @todo  Re-think about how this method works (maybe make it private and/or make it
	 *               a extension->lang lookup?)
	 * @todo  static?
	 */
	function get_language_name_from_extension($extension, $lookup = array()) {
		if (!is_array($lookup) || empty($lookup)) {
			$lookup = array('6502acme' => array('a', 's', 'asm', 'inc'), '6502tasm' => array('a', 's', 'asm', 'inc'),
							'6502kickass' => array('a', 's', 'asm', 'inc'),
							'68000devpac' => array('a', 's', 'asm', 'inc'), 'abap' => array('abap'),
							'actionscript' => array('as'), 'ada' => array('a', 'ada', 'adb', 'ads'),
							'apache' => array('conf'), 'asm' => array('ash', 'asm', 'inc'), 'asp' => array('asp'),
							'bash' => array('sh'), 'bf' => array('bf'), 'c' => array('c', 'h'),
							'c_mac' => array('c', 'h'), 'caddcl' => array(), 'cadlisp' => array(),
							'cdfg' => array('cdfg'), 'cobol' => array('cbl'),
							'cpp' => array('cpp', 'hpp', 'C', 'H', 'CPP', 'HPP'), 'csharp' => array('cs'),
							'css' => array('css'), 'd' => array('d'), 'delphi' => array('dpk', 'dpr', 'pp', 'pas'),
							'diff' => array('diff', 'patch'), 'dos' => array('bat', 'cmd'),
							'gdb' => array('kcrash', 'crash', 'bt'), 'gettext' => array('po', 'pot'),
							'gml' => array('gml'), 'gnuplot' => array('plt'), 'groovy' => array('groovy'),
							'haskell' => array('hs'), 'html4strict' => array('html', 'htm'),
							'ini' => array('ini', 'desktop'), 'java' => array('java'), 'javascript' => array('js'),
							'klonec' => array('kl1'), 'klonecpp' => array('klx'), 'latex' => array('tex'),
							'lisp' => array('lisp'), 'lua' => array('lua'), 'matlab' => array('m'), 'mpasm' => array(),
							'mysql' => array('sql'), 'nsis' => array(), 'objc' => array(), 'oobas' => array(),
							'oracle8' => array(), 'oracle10' => array(), 'pascal' => array('pas'),
							'perl' => array('pl', 'pm'), 'php' => array('php', 'php5', 'phtml', 'phps'),
							'povray' => array('pov'), 'providex' => array('pvc', 'pvx'), 'prolog' => array('pl'),
							'python' => array('py'), 'qbasic' => array('bi'), 'reg' => array('reg'),
							'ruby' => array('rb'), 'sas' => array('sas'), 'scala' => array('scala'),
							'scheme' => array('scm'), 'scilab' => array('sci'), 'smalltalk' => array('st'),
							'smarty' => array(), 'tcl' => array('tcl'), 'vb' => array('bas'), 'vbnet' => array(),
							'visualfoxpro' => array(), 'whitespace' => array('ws'), 'xml' => array('xml', 'svg', 'xrc'),
							'z80' => array('z80', 'asm', 'inc'));
		}
		foreach ($lookup as $lang => $extensions) {
			if (in_array($extension, $extensions)) {
				return $lang;
			}
		}
		return '';
	}

	/**
	 * Given a file name, this method loads its contents in, and attempts
	 * to set the language automatically. An optional lookup table can be
	 * passed for looking up the language name. If not specified a default
	 * table is used
	 * The language table is in the form
	 * <pre>array(
	 *   'lang_name' => array('extension', 'extension', ...),
	 *   'lang_name' ...
	 * );</pre>
	 * @param string The filename to load the source from
	 * @param array  A lookup array to use instead of the default one
	 * @todo  Complete rethink of this and above method
	 * @since 1.0.5
	 */
	function load_from_file($file_name, $lookup = array()) {
		if (is_readable($file_name)) {
			$this->set_source(file_get_contents($file_name));
			$this->set_language($this->get_language_name_from_extension(substr(strrchr($file_name, '.'), 1), $lookup));
		} else {
			$this->error = GESHI_ERROR_FILE_NOT_READABLE;
		}
	}

	/**
	 * Adds a keyword to a keyword group for highlighting
	 * @param int    The key of the keyword group to add the keyword to
	 * @param string The word to add to the keyword group
	 * @since 1.0.0
	 */
	function add_keyword($key, $word) {
		if (!in_array($word, $this->language_data['KEYWORDS'][$key])) {
			$this->language_data['KEYWORDS'][$key][] = $word;
			//NEW in 1.0.8 don't recompile the whole optimized regexp, simply append it
			if ($this->parse_cache_built) {
				$subkey = count($this->language_data['CACHED_KEYWORD_LISTS'][$key])-1;
				$this->language_data['CACHED_KEYWORD_LISTS'][$key][$subkey] .= '|'.preg_quote($word, '/');
			}
		}
	}

	/**
	 * Removes a keyword from a keyword group
	 * @param int    The key of the keyword group to remove the keyword from
	 * @param string The word to remove from the keyword group
	 * @param bool   Wether to automatically recompile the optimized regexp list or not.
	 *               Note: if you set this to false and @see GeSHi->parse_code() was already called once,
	 *               for the current language, you have to manually call @see GeSHi->optimize_keyword_group()
	 *               or the removed keyword will stay in cache and still be highlighted! On the other hand
	 *               it might be too expensive to recompile the regexp list for every removal if you want to
	 *               remove a lot of keywords.
	 * @since 1.0.0
	 */
	function remove_keyword($key, $word, $recompile = TRUE) {
		$key_to_remove = array_search($word, $this->language_data['KEYWORDS'][$key]);
		if ($key_to_remove !== FALSE) {
			unset($this->language_data['KEYWORDS'][$key][$key_to_remove]);
			//NEW in 1.0.8, optionally recompile keyword group
			if ($recompile && $this->parse_cache_built) {
				$this->optimize_keyword_group($key);
			}
		}
	}

	/**
	 * Creates a new keyword group
	 * @param int     The key of the keyword group to create
	 * @param string  The styles for the keyword group
	 * @param boolean Whether the keyword group is case sensitive ornot
	 * @param array   The words to use for the keyword group
	 * @since 1.0.0
	 */
	function add_keyword_group($key, $styles, $case_sensitive = TRUE, $words = array()) {
		$words = (array)$words;
		if (empty($words)) {
			// empty word lists mess up highlighting
			return FALSE;
		}
		//Add the new keyword group internally
		$this->language_data['KEYWORDS'][$key] = $words;
		$this->lexic_permissions['KEYWORDS'][$key] = TRUE;
		$this->language_data['CASE_SENSITIVE'][$key] = $case_sensitive;
		$this->language_data['STYLES']['KEYWORDS'][$key] = $styles;
		//NEW in 1.0.8, cache keyword regexp
		if ($this->parse_cache_built) {
			$this->optimize_keyword_group($key);
		}
	}

	/**
	 * Removes a keyword group
	 * @param int    The key of the keyword group to remove
	 * @since 1.0.0
	 */
	function remove_keyword_group($key) {
		//Remove the keyword group internally
		unset($this->language_data['KEYWORDS'][$key]);
		unset($this->lexic_permissions['KEYWORDS'][$key]);
		unset($this->language_data['CASE_SENSITIVE'][$key]);
		unset($this->language_data['STYLES']['KEYWORDS'][$key]);
		//NEW in 1.0.8
		unset($this->language_data['CACHED_KEYWORD_LISTS'][$key]);
	}

	/**
	 * compile optimized regexp list for keyword group
	 * @param int   The key of the keyword group to compile & optimize
	 * @since 1.0.8
	 */
	function optimize_keyword_group($key) {
		$this->language_data['CACHED_KEYWORD_LISTS'][$key] = $this->optimize_regexp_list($this->language_data['KEYWORDS'][$key]);
		$space_as_whitespace = FALSE;
		if (isset($this->language_data['PARSER_CONTROL'])) {
			if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'])) {
				if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS']['SPACE_AS_WHITESPACE'])) {
					$space_as_whitespace = $this->language_data['PARSER_CONTROL']['KEYWORDS']['SPACE_AS_WHITESPACE'];
				}
				if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'][$key]['SPACE_AS_WHITESPACE'])) {
					if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'][$key]['SPACE_AS_WHITESPACE'])) {
						$space_as_whitespace = $this->language_data['PARSER_CONTROL']['KEYWORDS'][$key]['SPACE_AS_WHITESPACE'];
					}
				}
			}
		}
		if ($space_as_whitespace) {
			foreach ($this->language_data['CACHED_KEYWORD_LISTS'][$key] as $rxk => $rxv) {
				$this->language_data['CACHED_KEYWORD_LISTS'][$key][$rxk] = str_replace(" ", "\\s+", $rxv);
			}
		}
	}

	/**
	 * Sets the content of the header block
	 * @param string The content of the header block
	 * @since 1.0.2
	 */
	function set_header_content($content) {
		$this->header_content = $content;
	}

	/**
	 * Sets the content of the footer block
	 * @param string The content of the footer block
	 * @since 1.0.2
	 */
	function set_footer_content($content) {
		$this->footer_content = $content;
	}

	/**
	 * Sets the style for the header content
	 * @param string The style for the header content
	 * @since 1.0.2
	 */
	function set_header_content_style($style) {
		$this->header_content_style = $style;
	}

	/**
	 * Sets the style for the footer content
	 * @param string The style for the footer content
	 * @since 1.0.2
	 */
	function set_footer_content_style($style) {
		$this->footer_content_style = $style;
	}

	/**
	 * Sets whether to force a surrounding block around
	 * the highlighted code or not
	 * @param boolean Tells whether to enable or disable this feature
	 * @since 1.0.7.20
	 */
	function enable_inner_code_block($flag) {
		$this->force_code_block = (bool)$flag;
	}

	/**
	 * Sets the base URL to be used for keywords
	 * @param int    The key of the keyword group to set the URL for
	 * @param string The URL to set for the group. If {FNAME} is in
	 *               the url somewhere, it is replaced by the keyword
	 *               that the URL is being made for
	 * @since 1.0.2
	 */
	function set_url_for_keyword_group($group, $url) {
		$this->language_data['URLS'][$group] = $url;
	}

	/**
	 * Sets styles for links in code
	 * @param int    A constant that specifies what state the style is being
	 *               set for - e.g. :hover or :visited
	 * @param string The styles to use for that state
	 * @since 1.0.2
	 */
	function set_link_styles($type, $styles) {
		$this->link_styles[$type] = $styles;
	}

	/**
	 * Sets the target for links in code
	 * @param string The target for links in the code, e.g. _blank
	 * @since 1.0.3
	 */
	function set_link_target($target) {
		if (!$target) {
			$this->link_target = '';
		} else {
			$this->link_target = ' target="'.$target.'"';
		}
	}

	/**
	 * Sets styles for important parts of the code
	 * @param string The styles to use on important parts of the code
	 * @since 1.0.2
	 */
	function set_important_styles($styles) {
		$this->important_styles = $styles;
	}

	/**
	 * Sets whether context-important blocks are highlighted
	 * @param boolean Tells whether to enable or disable highlighting of important blocks
	 * @todo  REMOVE THIS SHIZ FROM GESHI!
	 * @deprecated
	 * @since 1.0.2
	 */
	function enable_important_blocks($flag) {
		$this->enable_important_blocks = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Whether CSS IDs should be added to each line
	 * @param boolean If true, IDs will be added to each line.
	 * @since 1.0.2
	 */
	function enable_ids($flag = TRUE) {
		$this->add_ids = ($flag) ? TRUE : FALSE;
	}

	/**
	 * Specifies which lines to highlight extra
	 * The extra style parameter was added in 1.0.7.21.
	 * @param mixed  An array of line numbers to highlight, or just a line
	 *               number on its own.
	 * @param string A string specifying the style to use for this line.
	 *               If null is specified, the default style is used.
	 *               If false is specified, the line will be removed from
	 *               special highlighting
	 * @since 1.0.2
	 * @todo  Some data replication here that could be cut down on
	 */
	function highlight_lines_extra($lines, $style = NULL) {
		if (is_array($lines)) {
			//Split up the job using single lines at a time
			foreach ($lines as $line) {
				$this->highlight_lines_extra($line, $style);
			}
		} else {
			//Mark the line as being highlighted specially
			$lines = intval($lines);
			$this->highlight_extra_lines[$lines] = $lines;
			//Decide on which style to use
			if ($style === NULL) { //Check if we should use default style
				unset($this->highlight_extra_lines_styles[$lines]);
			} else if ($style === FALSE) { //Check if to remove this line
				unset($this->highlight_extra_lines[$lines]);
				unset($this->highlight_extra_lines_styles[$lines]);
			} else {
				$this->highlight_extra_lines_styles[$lines] = $style;
			}
		}
	}

	/**
	 * Sets the style for extra-highlighted lines
	 * @param string The style for extra-highlighted lines
	 * @since 1.0.2
	 */
	function set_highlight_lines_extra_style($styles) {
		$this->highlight_extra_lines_style = $styles;
	}

	/**
	 * Sets the line-ending
	 * @param string The new line-ending
	 * @since 1.0.2
	 */
	function set_line_ending($line_ending) {
		$this->line_ending = (string)$line_ending;
	}

	/**
	 * Sets what number line numbers should start at. Should
	 * be a positive integer, and will be converted to one.
	 * <b>Warning:</b> Using this method will add the "start"
	 * attribute to the &lt;ol&gt; that is used for line numbering.
	 * This is <b>not</b> valid XHTML strict, so if that's what you
	 * care about then don't use this method. Firefox is getting
	 * support for the CSS method of doing this in 1.1 and Opera
	 * has support for the CSS method, but (of course) IE doesn't
	 * so it's not worth doing it the CSS way yet.
	 * @param int The number to start line numbers at
	 * @since 1.0.2
	 */
	function start_line_numbers_at($number) {
		$this->line_numbers_start = abs(intval($number));
	}

	/**
	 * Sets the encoding used for htmlspecialchars(), for international
	 * support.
	 * NOTE: This is not needed for now because htmlspecialchars() is not
	 * being used (it has a security hole in PHP4 that has not been patched).
	 * Maybe in a future version it may make a return for speed reasons, but
	 * I doubt it.
	 * @param string The encoding to use for the source
	 * @since 1.0.3
	 */
	function set_encoding($encoding) {
		if ($encoding) {
			$this->encoding = strtolower($encoding);
		}
	}

	/**
	 * Turns linking of keywords on or off.
	 * @param boolean If true, links will be added to keywords
	 * @since 1.0.2
	 */
	function enable_keyword_links($enable = TRUE) {
		$this->keyword_links = (bool)$enable;
	}

	/**
	 * Setup caches needed for styling. This is automatically called in
	 * parse_code() and get_stylesheet() when appropriate. This function helps
	 * stylesheet generators as they rely on some style information being
	 * preprocessed
	 * @since  1.0.8
	 * @access private
	 */
	function build_style_cache() {
		//Build the style cache needed to highlight numbers appropriate
		if ($this->lexic_permissions['NUMBERS']) {
			//First check what way highlighting information for numbers are given
			if (!isset($this->language_data['NUMBERS'])) {
				$this->language_data['NUMBERS'] = 0;
			}
			if (is_array($this->language_data['NUMBERS'])) {
				$this->language_data['NUMBERS_CACHE'] = $this->language_data['NUMBERS'];
			} else {
				$this->language_data['NUMBERS_CACHE'] = array();
				if (!$this->language_data['NUMBERS']) {
					$this->language_data['NUMBERS'] = GESHI_NUMBER_INT_BASIC | GESHI_NUMBER_FLT_NONSCI;
				}
				for ($i = 0, $j = $this->language_data['NUMBERS']; $j > 0; ++$i, $j >>= 1) {
					//Rearrange style indices if required ...
					if (isset($this->language_data['STYLES']['NUMBERS'][1 << $i])) {
						$this->language_data['STYLES']['NUMBERS'][$i] = $this->language_data['STYLES']['NUMBERS'][1 << $i];
						unset($this->language_data['STYLES']['NUMBERS'][1 << $i]);
					}
					//Check if this bit is set for highlighting
					if ($j & 1) {
						//So this bit is set ...
						//Check if it belongs to group 0 or the actual stylegroup
						if (isset($this->language_data['STYLES']['NUMBERS'][$i])) {
							$this->language_data['NUMBERS_CACHE'][$i] = 1 << $i;
						} else {
							if (!isset($this->language_data['NUMBERS_CACHE'][0])) {
								$this->language_data['NUMBERS_CACHE'][0] = 0;
							}
							$this->language_data['NUMBERS_CACHE'][0] |= 1 << $i;
						}
					}
				}
			}
		}
	}

	/**
	 * Setup caches needed for parsing. This is automatically called in parse_code() when appropriate.
	 * This function makes stylesheet generators much faster as they do not need these caches.
	 * @since  1.0.8
	 * @access private
	 */
	function build_parse_cache() {
		// cache symbol regexp
		//As this is a costy operation, we avoid doing it for multiple groups ...
		//Instead we perform it for all symbols at once.
		//
		//For this to work, we need to reorganize the data arrays.
		if ($this->lexic_permissions['SYMBOLS'] && !empty($this->language_data['SYMBOLS'])) {
			$this->language_data['MULTIPLE_SYMBOL_GROUPS'] = count($this->language_data['STYLES']['SYMBOLS']) > 1;
			$this->language_data['SYMBOL_DATA'] = array();
			$symbol_preg_multi = array(); // multi char symbols
			$symbol_preg_single = array(); // single char symbols
			foreach ($this->language_data['SYMBOLS'] as $key => $symbols) {
				if (is_array($symbols)) {
					foreach ($symbols as $sym) {
						$sym = $this->hsc($sym);
						if (!isset($this->language_data['SYMBOL_DATA'][$sym])) {
							$this->language_data['SYMBOL_DATA'][$sym] = $key;
							if (isset($sym[1])) { // multiple chars
								$symbol_preg_multi[] = preg_quote($sym, '/');
							} else { // single char
								if ($sym == '-') {
									// don't trigger range out of order error
									$symbol_preg_single[] = '\-';
								} else {
									$symbol_preg_single[] = preg_quote($sym, '/');
								}
							}
						}
					}
				} else {
					$symbols = $this->hsc($symbols);
					if (!isset($this->language_data['SYMBOL_DATA'][$symbols])) {
						$this->language_data['SYMBOL_DATA'][$symbols] = 0;
						if (isset($symbols[1])) { // multiple chars
							$symbol_preg_multi[] = preg_quote($symbols, '/');
						} else if ($symbols == '-') {
							// don't trigger range out of order error
							$symbol_preg_single[] = '\-';
						} else { // single char
							$symbol_preg_single[] = preg_quote($symbols, '/');
						}
					}
				}
			}
			//Now we have an array with each possible symbol as the key and the style as the actual data.
			//This way we can set the correct style just the moment we highlight ...
			//
			//Now we need to rewrite our array to get a search string that
			$symbol_preg = array();
			if (!empty($symbol_preg_multi)) {
				rsort($symbol_preg_multi);
				$symbol_preg[] = implode('|', $symbol_preg_multi);
			}
			if (!empty($symbol_preg_single)) {
				rsort($symbol_preg_single);
				$symbol_preg[] = '['.implode('', $symbol_preg_single).']';
			}
			$this->language_data['SYMBOL_SEARCH'] = implode("|", $symbol_preg);
		}
		// cache optimized regexp for keyword matching
		// remove old cache
		$this->language_data['CACHED_KEYWORD_LISTS'] = array();
		foreach (array_keys($this->language_data['KEYWORDS']) as $key) {
			if (!isset($this->lexic_permissions['KEYWORDS'][$key]) || $this->lexic_permissions['KEYWORDS'][$key]) {
				$this->optimize_keyword_group($key);
			}
		}
		// brackets
		if ($this->lexic_permissions['BRACKETS']) {
			$this->language_data['CACHE_BRACKET_MATCH'] = array('[', ']', '(', ')', '{', '}');
			if (!$this->use_classes && isset($this->language_data['STYLES']['BRACKETS'][0])) {
				$this->language_data['CACHE_BRACKET_REPLACE'] = array('<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#91;|>',
																	  '<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#93;|>',
																	  '<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#40;|>',
																	  '<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#41;|>',
																	  '<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#123;|>',
																	  '<| style="'.$this->language_data['STYLES']['BRACKETS'][0].'">&#125;|>',);
			} else {
				$this->language_data['CACHE_BRACKET_REPLACE'] = array('<| class="br0">&#91;|>',
																	  '<| class="br0">&#93;|>',
																	  '<| class="br0">&#40;|>',
																	  '<| class="br0">&#41;|>',
																	  '<| class="br0">&#123;|>',
																	  '<| class="br0">&#125;|>',);
			}
		}
		//Build the parse cache needed to highlight numbers appropriate
		if ($this->lexic_permissions['NUMBERS']) {
			//Check if the style rearrangements have been processed ...
			//This also does some preprocessing to check which style groups are useable ...
			if (!isset($this->language_data['NUMBERS_CACHE'])) {
				$this->build_style_cache();
			}
			//Number format specification
			//All this formats are matched case-insensitively!
			static $numbers_format = array(GESHI_NUMBER_INT_BASIC => '(?:(?<![0-9a-z_\.%$@])|(?<=\.\.))(?<![\d\.]e[+\-])([1-9]\d*?|0)(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_INT_CSTYLE => '(?<![0-9a-z_\.%])(?<![\d\.]e[+\-])([1-9]\d*?|0)l(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_BIN_SUFFIX => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])[01]+?[bB](?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_BIN_PREFIX_PERCENT => '(?<![0-9a-z_\.%])(?<![\d\.]e[+\-])%[01]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_BIN_PREFIX_0B => '(?<![0-9a-z_\.%])(?<![\d\.]e[+\-])0b[01]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_OCT_PREFIX => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])0[0-7]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_OCT_PREFIX_0O => '(?<![0-9a-z_\.%])(?<![\d\.]e[+\-])0o[0-7]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_OCT_PREFIX_AT => '(?<![0-9a-z_\.%])(?<![\d\.]e[+\-])\@[0-7]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_OCT_SUFFIX => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])[0-7]+?o(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_HEX_PREFIX => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])0x[0-9a-fA-F]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_HEX_PREFIX_DOLLAR => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])\$[0-9a-fA-F]+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_HEX_SUFFIX => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])\d[0-9a-fA-F]*?[hH](?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_FLT_NONSCI => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])\d+?\.\d+?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_FLT_NONSCI_F => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])(?:\d+?(?:\.\d*?)?|\.\d+?)f(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_FLT_SCI_SHORT => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])\.\d+?(?:e[+\-]?\d+?)?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)',
										   GESHI_NUMBER_FLT_SCI_ZERO => '(?<![0-9a-z_\.])(?<![\d\.]e[+\-])(?:\d+?(?:\.\d*?)?|\.\d+?)(?:e[+\-]?\d+?)?(?![0-9a-z]|\.(?:[eE][+\-]?)?\d)');
			//At this step we have an associative array with flag groups for a
			//specific style or an string denoting a regexp given its index.
			$this->language_data['NUMBERS_RXCACHE'] = array();
			foreach ($this->language_data['NUMBERS_CACHE'] as $key => $rxdata) {
				if (is_string($rxdata)) {
					$regexp = $rxdata;
				} else {
					//This is a bitfield of number flags to highlight:
					//Build an array, implode them together and make this the actual RX
					$rxuse = array();
					for ($i = 1; $i <= $rxdata; $i <<= 1) {
						if ($rxdata & $i) {
							$rxuse[] = $numbers_format[$i];
						}
					}
					$regexp = implode("|", $rxuse);
				}
				$this->language_data['NUMBERS_RXCACHE'][$key] = "/(?<!<\|\/)(?<!<\|!REG3XP)(?<!<\|\/NUM!)(?<!\d\/>)($regexp)(?!(?:<DOT>|(?>[^\<]))+>)(?![^<]*>)(?!\|>)(?!\/>)/i"; //
			}
			if (!isset($this->language_data['PARSER_CONTROL']['NUMBERS']['PRECHECK_RX'])) {
				$this->language_data['PARSER_CONTROL']['NUMBERS']['PRECHECK_RX'] = '#\d#';
			}
		}
		$this->parse_cache_built = TRUE;
	}

	/**
	 * Returns the code in $this->source, highlighted and surrounded by the
	 * nessecary HTML.
	 * This should only be called ONCE, cos it's SLOW! If you want to highlight
	 * the same source multiple times, you're better off doing a whole lot of
	 * str_replaces to replace the &lt;span&gt;s
	 * @since 1.0.0
	 */
	function parse_code() {
		// Start the timer
		$start_time = microtime();
		// Replace all newlines to a common form.
		$code = str_replace("\r\n", "\n", $this->source);
		$code = str_replace("\r", "\n", $code);
		// Firstly, if there is an error, we won't highlight
		if ($this->error) {
			//Escape the source for output
			$result = $this->hsc($this->source);
			//This fix is related to SF#1923020, but has to be applied regardless of
			//actually highlighting symbols.
			$result = str_replace(array('<SEMI>', '<PIPE>'), array(';', '|'), $result);
			// Timing is irrelevant
			$this->set_time($start_time, $start_time);
			$this->finalise($result);
			return $result;
		}
		// make sure the parse cache is up2date
		if (!$this->parse_cache_built) {
			$this->build_parse_cache();
		}
		// Initialise various stuff
		$length = strlen($code);
		$COMMENT_MATCHED = FALSE;
		$stuff_to_parse = '';
		$endresult = '';
		// "Important" selections are handled like multiline comments
		// @todo GET RID OF THIS SHIZ
		if ($this->enable_important_blocks) {
			$this->language_data['COMMENT_MULTI'][GESHI_START_IMPORTANT] = GESHI_END_IMPORTANT;
		}
		if ($this->strict_mode) {
			// Break the source into bits. Each bit will be a portion of the code
			// within script delimiters - for example, HTML between < and >
			$k = 0;
			$parts = array();
			$matches = array();
			$next_match_pointer = NULL;
			// we use a copy to unset delimiters on demand (when they are not found)
			$delim_copy = $this->language_data['SCRIPT_DELIMITERS'];
			$i = 0;
			while ($i < $length) {
				$next_match_pos = $length+1; // never true
				foreach ($delim_copy as $dk => $delimiters) {
					if (is_array($delimiters)) {
						foreach ($delimiters as $open => $close) {
							// make sure the cache is setup properly
							if (!isset($matches[$dk][$open])) {
								$matches[$dk][$open] = array('next_match' => -1, 'dk' => $dk, 'open' => $open,
															 // needed for grouping of adjacent code blocks (see below)
															 'open_strlen' => strlen($open), 'close' => $close,
															 'close_strlen' => strlen($close),);
							}
							// Get the next little bit for this opening string
							if ($matches[$dk][$open]['next_match'] < $i) {
								// only find the next pos if it was not already cached
								$open_pos = strpos($code, $open, $i);
								if ($open_pos === FALSE) {
									// no match for this delimiter ever
									unset($delim_copy[$dk][$open]);
									continue;
								}
								$matches[$dk][$open]['next_match'] = $open_pos;
							}
							if ($matches[$dk][$open]['next_match'] < $next_match_pos) {
								//So we got a new match, update the close_pos
								$matches[$dk][$open]['close_pos'] = strpos($code, $close, $matches[$dk][$open]['next_match']+1);
								$next_match_pointer =& $matches[$dk][$open];
								$next_match_pos = $matches[$dk][$open]['next_match'];
							}
						}
					} else {
						//So we should match an RegExp as Strict Block ...
						/**
						 * The value in $delimiters is expected to be an RegExp
						 * containing exactly 2 matching groups:
						 *  - Group 1 is the opener
						 *  - Group 2 is the closer
						 */
						if (!GESHI_PHP_PRE_433 && //Needs proper rewrite to work with PHP >=4.3.0; 4.3.3 is guaranteed to work.
							preg_match($delimiters, $code, $matches_rx, PREG_OFFSET_CAPTURE, $i)
						) {
							//We got a match ...
							if (isset($matches_rx['start']) && isset($matches_rx['end'])) {
								$matches[$dk] = array('next_match' => $matches_rx['start'][1], 'dk' => $dk,
													  'close_strlen' => strlen($matches_rx['end'][0]),
													  'close_pos' => $matches_rx['end'][1],);
							} else {
								$matches[$dk] = array('next_match' => $matches_rx[1][1], 'dk' => $dk,
													  'close_strlen' => strlen($matches_rx[2][0]),
													  'close_pos' => $matches_rx[2][1],);
							}
						} else {
							// no match for this delimiter ever
							unset($delim_copy[$dk]);
							continue;
						}
						if ($matches[$dk]['next_match'] <= $next_match_pos) {
							$next_match_pointer =& $matches[$dk];
							$next_match_pos = $matches[$dk]['next_match'];
						}
					}
				}
				// non-highlightable text
				$parts[$k] = array(1 => substr($code, $i, $next_match_pos-$i));
				++$k;
				if ($next_match_pos > $length) {
					// out of bounds means no next match was found
					break;
				}
				// highlightable code
				$parts[$k][0] = $next_match_pointer['dk'];
				//Only combine for non-rx script blocks
				if (is_array($delim_copy[$next_match_pointer['dk']])) {
					// group adjacent script blocks, e.g. <foobar><asdf> should be one block, not three!
					$i = $next_match_pos+$next_match_pointer['open_strlen'];
					while (TRUE) {
						$close_pos = strpos($code, $next_match_pointer['close'], $i);
						if ($close_pos == FALSE) {
							break;
						}
						$i = $close_pos+$next_match_pointer['close_strlen'];
						if ($i == $length) {
							break;
						}
						if ($code[$i] == $next_match_pointer['open'][0] && ($next_match_pointer['open_strlen'] == 1 || substr($code, $i, $next_match_pointer['open_strlen']) == $next_match_pointer['open'])) {
							// merge adjacent but make sure we don't merge things like <tag><!-- comment -->
							foreach ($matches as $submatches) {
								foreach ($submatches as $match) {
									if ($match['next_match'] == $i) {
										// a different block already matches here!
										break 3;
									}
								}
							}
						} else {
							break;
						}
					}
				} else {
					$close_pos = $next_match_pointer['close_pos']+$next_match_pointer['close_strlen'];
					$i = $close_pos;
				}
				if ($close_pos === FALSE) {
					// no closing delimiter found!
					$parts[$k][1] = substr($code, $next_match_pos);
					++$k;
					break;
				} else {
					$parts[$k][1] = substr($code, $next_match_pos, $i-$next_match_pos);
					++$k;
				}
			}
			unset($delim_copy, $next_match_pointer, $next_match_pos, $matches);
			$num_parts = $k;
			if ($num_parts == 1 && $this->strict_mode == GESHI_MAYBE) {
				// when we have only one part, we don't have anything to highlight at all.
				// if we have a "maybe" strict language, this should be handled as highlightable code
				$parts = array(0 => array(0 => '', 1 => ''), 1 => array(0 => NULL, 1 => $parts[0][1]));
				$num_parts = 2;
			}
		} else {
			// Not strict mode - simply dump the source into
			// the array at index 1 (the first highlightable block)
			$parts = array(0 => array(0 => '', 1 => ''), 1 => array(0 => NULL, 1 => $code));
			$num_parts = 2;
		}
		//Unset variables we won't need any longer
		unset($code);
		//Preload some repeatedly used values regarding hardquotes ...
		$hq = isset($this->language_data['HARDQUOTE']) ? $this->language_data['HARDQUOTE'][0] : FALSE;
		$hq_strlen = strlen($hq);
		//Preload if line numbers are to be generated afterwards
		//Added a check if line breaks should be forced even without line numbers, fixes SF#1727398
		$check_linenumbers = $this->line_numbers != GESHI_NO_LINE_NUMBERS || !empty($this->highlight_extra_lines) || !$this->allow_multiline_span;
		//preload the escape char for faster checking ...
		$escaped_escape_char = $this->hsc($this->language_data['ESCAPE_CHAR']);
		// this is used for single-line comments
		$sc_disallowed_before = "";
		$sc_disallowed_after = "";
		if (isset($this->language_data['PARSER_CONTROL'])) {
			if (isset($this->language_data['PARSER_CONTROL']['COMMENTS'])) {
				if (isset($this->language_data['PARSER_CONTROL']['COMMENTS']['DISALLOWED_BEFORE'])) {
					$sc_disallowed_before = $this->language_data['PARSER_CONTROL']['COMMENTS']['DISALLOWED_BEFORE'];
				}
				if (isset($this->language_data['PARSER_CONTROL']['COMMENTS']['DISALLOWED_AFTER'])) {
					$sc_disallowed_after = $this->language_data['PARSER_CONTROL']['COMMENTS']['DISALLOWED_AFTER'];
				}
			}
		}
		//Fix for SF#1932083: Multichar Quotemarks unsupported
		$is_string_starter = array();
		if ($this->lexic_permissions['STRINGS']) {
			foreach ($this->language_data['QUOTEMARKS'] as $quotemark) {
				if (!isset($is_string_starter[$quotemark[0]])) {
					$is_string_starter[$quotemark[0]] = (string)$quotemark;
				} else if (is_string($is_string_starter[$quotemark[0]])) {
					$is_string_starter[$quotemark[0]] = array($is_string_starter[$quotemark[0]], $quotemark);
				} else {
					$is_string_starter[$quotemark[0]][] = $quotemark;
				}
			}
		}
		// Now we go through each part. We know that even-indexed parts are
		// code that shouldn't be highlighted, and odd-indexed parts should
		// be highlighted
		for ($key = 0; $key < $num_parts; ++$key) {
			$STRICTATTRS = '';
			// If this block should be highlighted...
			if (!($key & 1)) {
				// Else not a block to highlight
				$endresult .= $this->hsc($parts[$key][1]);
				unset($parts[$key]);
				continue;
			}
			$result = '';
			$part = $parts[$key][1];
			$highlight_part = TRUE;
			if ($this->strict_mode && !is_null($parts[$key][0])) {
				// get the class key for this block of code
				$script_key = $parts[$key][0];
				$highlight_part = $this->language_data['HIGHLIGHT_STRICT_BLOCK'][$script_key];
				if ($this->language_data['STYLES']['SCRIPT'][$script_key] != '' && $this->lexic_permissions['SCRIPT']) {
					// Add a span element around the source to
					// highlight the overall source block
					if (!$this->use_classes && $this->language_data['STYLES']['SCRIPT'][$script_key] != '') {
						$attributes = ' style="'.$this->language_data['STYLES']['SCRIPT'][$script_key].'"';
					} else {
						$attributes = ' class="sc'.$script_key.'"';
					}
					$result .= "<span$attributes>";
					$STRICTATTRS = $attributes;
				}
			}
			if ($highlight_part) {
				// Now, highlight the code in this block. This code
				// is really the engine of GeSHi (along with the method
				// parse_non_string_part).
				// cache comment regexps incrementally
				$next_comment_regexp_key = '';
				$next_comment_regexp_pos = -1;
				$next_comment_multi_pos = -1;
				$next_comment_single_pos = -1;
				$comment_regexp_cache_per_key = array();
				$comment_multi_cache_per_key = array();
				$comment_single_cache_per_key = array();
				$next_open_comment_multi = '';
				$next_comment_single_key = '';
				$escape_regexp_cache_per_key = array();
				$next_escape_regexp_key = '';
				$next_escape_regexp_pos = -1;
				$length = strlen($part);
				for ($i = 0; $i < $length; ++$i) {
					// Get the next char
					$char = $part[$i];
					$char_len = 1;
					// update regexp comment cache if needed
					if (isset($this->language_data['COMMENT_REGEXP']) && $next_comment_regexp_pos < $i) {
						$next_comment_regexp_pos = $length;
						foreach ($this->language_data['COMMENT_REGEXP'] as $comment_key => $regexp) {
							$match_i = FALSE;
							if (isset($comment_regexp_cache_per_key[$comment_key]) && ($comment_regexp_cache_per_key[$comment_key]['pos'] >= $i || $comment_regexp_cache_per_key[$comment_key]['pos'] === FALSE)) {
								// we have already matched something
								if ($comment_regexp_cache_per_key[$comment_key]['pos'] === FALSE) {
									// this comment is never matched
									continue;
								}
								$match_i = $comment_regexp_cache_per_key[$comment_key]['pos'];
							} else if (//This is to allow use of the offset parameter in preg_match and stay as compatible with older PHP versions as possible
								(GESHI_PHP_PRE_433 && preg_match($regexp, substr($part, $i), $match, PREG_OFFSET_CAPTURE)) || (!GESHI_PHP_PRE_433 && preg_match($regexp, $part, $match, PREG_OFFSET_CAPTURE, $i))
							) {
								$match_i = $match[0][1];
								if (GESHI_PHP_PRE_433) {
									$match_i += $i;
								}
								$comment_regexp_cache_per_key[$comment_key] = array('key' => $comment_key,
																					'length' => strlen($match[0][0]),
																					'pos' => $match_i);
							} else {
								$comment_regexp_cache_per_key[$comment_key]['pos'] = FALSE;
								continue;
							}
							if ($match_i !== FALSE && $match_i < $next_comment_regexp_pos) {
								$next_comment_regexp_pos = $match_i;
								$next_comment_regexp_key = $comment_key;
								if ($match_i === $i) {
									break;
								}
							}
						}
					}
					$string_started = FALSE;
					if (isset($is_string_starter[$char])) {
						// Possibly the start of a new string ...
						//Check which starter it was ...
						//Fix for SF#1932083: Multichar Quotemarks unsupported
						if (is_array($is_string_starter[$char])) {
							$char_new = '';
							foreach ($is_string_starter[$char] as $testchar) {
								if ($testchar === substr($part, $i, strlen($testchar)) && strlen($testchar) > strlen($char_new)) {
									$char_new = $testchar;
									$string_started = TRUE;
								}
							}
							if ($string_started) {
								$char = $char_new;
							}
						} else {
							$testchar = $is_string_starter[$char];
							if ($testchar === substr($part, $i, strlen($testchar))) {
								$char = $testchar;
								$string_started = TRUE;
							}
						}
						$char_len = strlen($char);
					}
					if ($string_started && ($i != $next_comment_regexp_pos)) {
						// Hand out the correct style information for this string
						$string_key = array_search($char, $this->language_data['QUOTEMARKS']);
						if (!isset($this->language_data['STYLES']['STRINGS'][$string_key]) || !isset($this->language_data['STYLES']['ESCAPE_CHAR'][$string_key])) {
							$string_key = 0;
						}
						// parse the stuff before this
						$result .= $this->parse_non_string_part($stuff_to_parse);
						$stuff_to_parse = '';
						if (!$this->use_classes) {
							$string_attributes = ' style="'.$this->language_data['STYLES']['STRINGS'][$string_key].'"';
						} else {
							$string_attributes = ' class="st'.$string_key.'"';
						}
						// now handle the string
						$string = "<span$string_attributes>".GeSHi::hsc($char);
						$start = $i+$char_len;
						$string_open = TRUE;
						if (empty($this->language_data['ESCAPE_REGEXP'])) {
							$next_escape_regexp_pos = $length;
						}
						do {
							//Get the regular ending pos ...
							$close_pos = strpos($part, $char, $start);
							if (FALSE === $close_pos) {
								$close_pos = $length;
							}
							if ($this->lexic_permissions['ESCAPE_CHAR']) {
								// update escape regexp cache if needed
								if (isset($this->language_data['ESCAPE_REGEXP']) && $next_escape_regexp_pos < $start) {
									$next_escape_regexp_pos = $length;
									foreach ($this->language_data['ESCAPE_REGEXP'] as $escape_key => $regexp) {
										$match_i = FALSE;
										if (isset($escape_regexp_cache_per_key[$escape_key]) && ($escape_regexp_cache_per_key[$escape_key]['pos'] >= $start || $escape_regexp_cache_per_key[$escape_key]['pos'] === FALSE)) {
											// we have already matched something
											if ($escape_regexp_cache_per_key[$escape_key]['pos'] === FALSE) {
												// this comment is never matched
												continue;
											}
											$match_i = $escape_regexp_cache_per_key[$escape_key]['pos'];
										} else if (//This is to allow use of the offset parameter in preg_match and stay as compatible with older PHP versions as possible
											(GESHI_PHP_PRE_433 && preg_match($regexp, substr($part, $start), $match, PREG_OFFSET_CAPTURE)) || (!GESHI_PHP_PRE_433 && preg_match($regexp, $part, $match, PREG_OFFSET_CAPTURE, $start))
										) {
											$match_i = $match[0][1];
											if (GESHI_PHP_PRE_433) {
												$match_i += $start;
											}
											$escape_regexp_cache_per_key[$escape_key] = array('key' => $escape_key,
																							  'length' => strlen($match[0][0]),
																							  'pos' => $match_i);
										} else {
											$escape_regexp_cache_per_key[$escape_key]['pos'] = FALSE;
											continue;
										}
										if ($match_i !== FALSE && $match_i < $next_escape_regexp_pos) {
											$next_escape_regexp_pos = $match_i;
											$next_escape_regexp_key = $escape_key;
											if ($match_i === $start) {
												break;
											}
										}
									}
								}
								//Find the next simple escape position
								if ('' != $this->language_data['ESCAPE_CHAR']) {
									$simple_escape = strpos($part, $this->language_data['ESCAPE_CHAR'], $start);
									if (FALSE === $simple_escape) {
										$simple_escape = $length;
									}
								} else {
									$simple_escape = $length;
								}
							} else {
								$next_escape_regexp_pos = $length;
								$simple_escape = $length;
							}
							if ($simple_escape < $next_escape_regexp_pos && $simple_escape < $length && $simple_escape < $close_pos) {
								//The nexxt escape sequence is a simple one ...
								$es_pos = $simple_escape;
								//Add the stuff not in the string yet ...
								$string .= $this->hsc(substr($part, $start, $es_pos-$start));
								//Get the style for this escaped char ...
								if (!$this->use_classes) {
									$escape_char_attributes = ' style="'.$this->language_data['STYLES']['ESCAPE_CHAR'][0].'"';
								} else {
									$escape_char_attributes = ' class="es0"';
								}
								//Add the style for the escape char ...
								$string .= "<span$escape_char_attributes>".GeSHi::hsc($this->language_data['ESCAPE_CHAR']);
								//Get the byte AFTER the ESCAPE_CHAR we just found
								$es_char = $part[$es_pos+1];
								if ($es_char == "\n") {
									// don't put a newline around newlines
									$string .= "</span>\n";
									$start = $es_pos+2;
								} else if (ord($es_char) >= 128) {
									//This is an non-ASCII char (UTF8 or single byte)
									//This code tries to work around SF#2037598 ...
									if (function_exists('mb_substr')) {
										$es_char_m = mb_substr(substr($part, $es_pos+1, 16), 0, 1, $this->encoding);
										$string .= $es_char_m.'</span>';
									} else if (!GESHI_PHP_PRE_433 && 'utf-8' == $this->encoding) {
										if (preg_match("/[\xC2-\xDF][\x80-\xBF]"."|\xE0[\xA0-\xBF][\x80-\xBF]"."|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}"."|\xED[\x80-\x9F][\x80-\xBF]"."|\xF0[\x90-\xBF][\x80-\xBF]{2}"."|[\xF1-\xF3][\x80-\xBF]{3}"."|\xF4[\x80-\x8F][\x80-\xBF]{2}/s", $part, $es_char_m, NULL, $es_pos+1)) {
											$es_char_m = $es_char_m[0];
										} else {
											$es_char_m = $es_char;
										}
										$string .= $this->hsc($es_char_m).'</span>';
									} else {
										$es_char_m = $this->hsc($es_char);
									}
									$start = $es_pos+strlen($es_char_m)+1;
								} else {
									$string .= $this->hsc($es_char).'</span>';
									$start = $es_pos+2;
								}
							} else if ($next_escape_regexp_pos < $length && $next_escape_regexp_pos < $close_pos) {
								$es_pos = $next_escape_regexp_pos;
								//Add the stuff not in the string yet ...
								$string .= $this->hsc(substr($part, $start, $es_pos-$start));
								//Get the key and length of this match ...
								$escape = $escape_regexp_cache_per_key[$next_escape_regexp_key];
								$escape_str = substr($part, $es_pos, $escape['length']);
								$escape_key = $escape['key'];
								//Get the style for this escaped char ...
								if (!$this->use_classes) {
									$escape_char_attributes = ' style="'.$this->language_data['STYLES']['ESCAPE_CHAR'][$escape_key].'"';
								} else {
									$escape_char_attributes = ' class="es'.$escape_key.'"';
								}
								//Add the style for the escape char ...
								$string .= "<span$escape_char_attributes>".$this->hsc($escape_str).'</span>';
								$start = $es_pos+$escape['length'];
							} else {
								//Copy the remainder of the string ...
								$string .= $this->hsc(substr($part, $start, $close_pos-$start+$char_len)).'</span>';
								$start = $close_pos+$char_len;
								$string_open = FALSE;
							}
						} while ($string_open);
						if ($check_linenumbers) {
							// Are line numbers used? If, we should end the string before
							// the newline and begin it again (so when <li>s are put in the source
							// remains XHTML compliant)
							// note to self: This opens up possibility of config files specifying
							// that languages can/cannot have multiline strings???
							$string = str_replace("\n", "</span>\n<span$string_attributes>", $string);
						}
						$result .= $string;
						$string = '';
						$i = $start-1;
						continue;
					} else if ($this->lexic_permissions['STRINGS'] && $hq && $hq[0] == $char && substr($part, $i, $hq_strlen) == $hq && ($i != $next_comment_regexp_pos)) {
						// The start of a hard quoted string
						if (!$this->use_classes) {
							$string_attributes = ' style="'.$this->language_data['STYLES']['STRINGS']['HARD'].'"';
							$escape_char_attributes = ' style="'.$this->language_data['STYLES']['ESCAPE_CHAR']['HARD'].'"';
						} else {
							$string_attributes = ' class="st_h"';
							$escape_char_attributes = ' class="es_h"';
						}
						// parse the stuff before this
						$result .= $this->parse_non_string_part($stuff_to_parse);
						$stuff_to_parse = '';
						// now handle the string
						$string = '';
						// look for closing quote
						$start = $i+$hq_strlen;
						while ($close_pos = strpos($part, $this->language_data['HARDQUOTE'][1], $start)) {
							$start = $close_pos+1;
							if ($this->lexic_permissions['ESCAPE_CHAR'] && $part[$close_pos-1] == $this->language_data['HARDCHAR'] && (($i+$hq_strlen) != ($close_pos))) { //Support empty string for HQ escapes if Starter = Escape
								// make sure this quote is not escaped
								foreach ($this->language_data['HARDESCAPE'] as $hardescape) {
									if (substr($part, $close_pos-1, strlen($hardescape)) == $hardescape) {
										// check wether this quote is escaped or if it is something like '\\'
										$escape_char_pos = $close_pos-1;
										while ($escape_char_pos > 0 && $part[$escape_char_pos-1] == $this->language_data['HARDCHAR']) {
											--$escape_char_pos;
										}
										if (($close_pos-$escape_char_pos) & 1) {
											// uneven number of escape chars => this quote is escaped
											continue 2;
										}
									}
								}
							}
							// found closing quote
							break;
						}
						//Found the closing delimiter?
						if (!$close_pos) {
							// span till the end of this $part when no closing delimiter is found
							$close_pos = $length;
						}
						//Get the actual string
						$string = substr($part, $i, $close_pos-$i+1);
						$i = $close_pos;
						// handle escape chars and encode html chars
						// (special because when we have escape chars within our string they may not be escaped)
						if ($this->lexic_permissions['ESCAPE_CHAR'] && $this->language_data['ESCAPE_CHAR']) {
							$start = 0;
							$new_string = '';
							while ($es_pos = strpos($string, $this->language_data['ESCAPE_CHAR'], $start)) {
								// hmtl escape stuff before
								$new_string .= $this->hsc(substr($string, $start, $es_pos-$start));
								// check if this is a hard escape
								foreach ($this->language_data['HARDESCAPE'] as $hardescape) {
									if (substr($string, $es_pos, strlen($hardescape)) == $hardescape) {
										// indeed, this is a hardescape
										$new_string .= "<span$escape_char_attributes>".$this->hsc($hardescape).'</span>';
										$start = $es_pos+strlen($hardescape);
										continue 2;
									}
								}
								// not a hard escape, but a normal escape
								// they come in pairs of two
								$c = 0;
								while (isset($string[$es_pos+$c]) && isset($string[$es_pos+$c+1]) && $string[$es_pos+$c] == $this->language_data['ESCAPE_CHAR'] && $string[$es_pos+$c+1] == $this->language_data['ESCAPE_CHAR']) {
									$c += 2;
								}
								if ($c) {
									$new_string .= "<span$escape_char_attributes>".str_repeat($escaped_escape_char, $c).'</span>';
									$start = $es_pos+$c;
								} else {
									// this is just a single lonely escape char...
									$new_string .= $escaped_escape_char;
									$start = $es_pos+1;
								}
							}
							$string = $new_string.$this->hsc(substr($string, $start));
						} else {
							$string = $this->hsc($string);
						}
						if ($check_linenumbers) {
							// Are line numbers used? If, we should end the string before
							// the newline and begin it again (so when <li>s are put in the source
							// remains XHTML compliant)
							// note to self: This opens up possibility of config files specifying
							// that languages can/cannot have multiline strings???
							$string = str_replace("\n", "</span>\n<span$string_attributes>", $string);
						}
						$result .= "<span$string_attributes>".$string.'</span>';
						$string = '';
						continue;
					} else {
						//Have a look for regexp comments
						if ($i == $next_comment_regexp_pos) {
							$COMMENT_MATCHED = TRUE;
							$comment = $comment_regexp_cache_per_key[$next_comment_regexp_key];
							$test_str = $this->hsc(substr($part, $i, $comment['length']));
							//@todo If remove important do remove here
							if ($this->lexic_permissions['COMMENTS']['MULTI']) {
								if (!$this->use_classes) {
									$attributes = ' style="'.$this->language_data['STYLES']['COMMENTS'][$comment['key']].'"';
								} else {
									$attributes = ' class="co'.$comment['key'].'"';
								}
								$test_str = "<span$attributes>".$test_str."</span>";
								// Short-cut through all the multiline code
								if ($check_linenumbers) {
									// strreplace to put close span and open span around multiline newlines
									$test_str = str_replace("\n", "</span>\n<span$attributes>", str_replace("\n ", "\n&nbsp;", $test_str));
								}
							}
							$i += $comment['length']-1;
							// parse the rest
							$result .= $this->parse_non_string_part($stuff_to_parse);
							$stuff_to_parse = '';
						}
						// If we haven't matched a regexp comment, try multi-line comments
						if (!$COMMENT_MATCHED) {
							// Is this a multiline comment?
							if (!empty($this->language_data['COMMENT_MULTI']) && $next_comment_multi_pos < $i) {
								$next_comment_multi_pos = $length;
								foreach ($this->language_data['COMMENT_MULTI'] as $open => $close) {
									$match_i = FALSE;
									if (isset($comment_multi_cache_per_key[$open]) && ($comment_multi_cache_per_key[$open] >= $i || $comment_multi_cache_per_key[$open] === FALSE)) {
										// we have already matched something
										if ($comment_multi_cache_per_key[$open] === FALSE) {
											// this comment is never matched
											continue;
										}
										$match_i = $comment_multi_cache_per_key[$open];
									} else if (($match_i = stripos($part, $open, $i)) !== FALSE) {
										$comment_multi_cache_per_key[$open] = $match_i;
									} else {
										$comment_multi_cache_per_key[$open] = FALSE;
										continue;
									}
									if ($match_i !== FALSE && $match_i < $next_comment_multi_pos) {
										$next_comment_multi_pos = $match_i;
										$next_open_comment_multi = $open;
										if ($match_i === $i) {
											break;
										}
									}
								}
							}
							if ($i == $next_comment_multi_pos) {
								$open = $next_open_comment_multi;
								$close = $this->language_data['COMMENT_MULTI'][$open];
								$open_strlen = strlen($open);
								$close_strlen = strlen($close);
								$COMMENT_MATCHED = TRUE;
								$test_str_match = $open;
								//@todo If remove important do remove here
								if ($this->lexic_permissions['COMMENTS']['MULTI'] || $open == GESHI_START_IMPORTANT) {
									if ($open != GESHI_START_IMPORTANT) {
										if (!$this->use_classes) {
											$attributes = ' style="'.$this->language_data['STYLES']['COMMENTS']['MULTI'].'"';
										} else {
											$attributes = ' class="coMULTI"';
										}
										$test_str = "<span$attributes>".$this->hsc($open);
									} else {
										if (!$this->use_classes) {
											$attributes = ' style="'.$this->important_styles.'"';
										} else {
											$attributes = ' class="imp"';
										}
										// We don't include the start of the comment if it's an
										// "important" part
										$test_str = "<span$attributes>";
									}
								} else {
									$test_str = $this->hsc($open);
								}
								$close_pos = strpos($part, $close, $i+$open_strlen);
								if ($close_pos === FALSE) {
									$close_pos = $length;
								}
								// Short-cut through all the multiline code
								$rest_of_comment = $this->hsc(substr($part, $i+$open_strlen, $close_pos-$i-$open_strlen+$close_strlen));
								if (($this->lexic_permissions['COMMENTS']['MULTI'] || $test_str_match == GESHI_START_IMPORTANT) && $check_linenumbers) {
									// strreplace to put close span and open span around multiline newlines
									$test_str .= str_replace("\n", "</span>\n<span$attributes>", str_replace("\n ", "\n&nbsp;", $rest_of_comment));
								} else {
									$test_str .= $rest_of_comment;
								}
								if ($this->lexic_permissions['COMMENTS']['MULTI'] || $test_str_match == GESHI_START_IMPORTANT) {
									$test_str .= '</span>';
								}
								$i = $close_pos+$close_strlen-1;
								// parse the rest
								$result .= $this->parse_non_string_part($stuff_to_parse);
								$stuff_to_parse = '';
							}
						}
						// If we haven't matched a multiline comment, try single-line comments
						if (!$COMMENT_MATCHED) {
							// cache potential single line comment occurances
							if (!empty($this->language_data['COMMENT_SINGLE']) && $next_comment_single_pos < $i) {
								$next_comment_single_pos = $length;
								foreach ($this->language_data['COMMENT_SINGLE'] as $comment_key => $comment_mark) {
									$match_i = FALSE;
									if (isset($comment_single_cache_per_key[$comment_key]) && ($comment_single_cache_per_key[$comment_key] >= $i || $comment_single_cache_per_key[$comment_key] === FALSE)) {
										// we have already matched something
										if ($comment_single_cache_per_key[$comment_key] === FALSE) {
											// this comment is never matched
											continue;
										}
										$match_i = $comment_single_cache_per_key[$comment_key];
									} else if (// case sensitive comments
										($this->language_data['CASE_SENSITIVE'][GESHI_COMMENTS] && ($match_i = stripos($part, $comment_mark, $i)) !== FALSE) || // non case sensitive
										(!$this->language_data['CASE_SENSITIVE'][GESHI_COMMENTS] && (($match_i = strpos($part, $comment_mark, $i)) !== FALSE))
									) {
										$comment_single_cache_per_key[$comment_key] = $match_i;
									} else {
										$comment_single_cache_per_key[$comment_key] = FALSE;
										continue;
									}
									if ($match_i !== FALSE && $match_i < $next_comment_single_pos) {
										$next_comment_single_pos = $match_i;
										$next_comment_single_key = $comment_key;
										if ($match_i === $i) {
											break;
										}
									}
								}
							}
							if ($next_comment_single_pos == $i) {
								$comment_key = $next_comment_single_key;
								$comment_mark = $this->language_data['COMMENT_SINGLE'][$comment_key];
								$com_len = strlen($comment_mark);
								// This check will find special variables like $# in bash
								// or compiler directives of Delphi beginning {$
								if ((empty($sc_disallowed_before) || ($i == 0) || (FALSE === strpos($sc_disallowed_before, $part[$i-1]))) && (empty($sc_disallowed_after) || ($length <= $i+$com_len) || (FALSE === strpos($sc_disallowed_after, $part[$i+$com_len])))) {
									// this is a valid comment
									$COMMENT_MATCHED = TRUE;
									if ($this->lexic_permissions['COMMENTS'][$comment_key]) {
										if (!$this->use_classes) {
											$attributes = ' style="'.$this->language_data['STYLES']['COMMENTS'][$comment_key].'"';
										} else {
											$attributes = ' class="co'.$comment_key.'"';
										}
										$test_str = "<span$attributes>".$this->hsc($this->change_case($comment_mark));
									} else {
										$test_str = $this->hsc($comment_mark);
									}
									//Check if this comment is the last in the source
									$close_pos = strpos($part, "\n", $i);
									$oops = FALSE;
									if ($close_pos === FALSE) {
										$close_pos = $length;
										$oops = TRUE;
									}
									$test_str .= $this->hsc(substr($part, $i+$com_len, $close_pos-$i-$com_len));
									if ($this->lexic_permissions['COMMENTS'][$comment_key]) {
										$test_str .= "</span>";
									}
									// Take into account that the comment might be the last in the source
									if (!$oops) {
										$test_str .= "\n";
									}
									$i = $close_pos;
									// parse the rest
									$result .= $this->parse_non_string_part($stuff_to_parse);
									$stuff_to_parse = '';
								}
							}
						}
					}
					// Where are we adding this char?
					if (!$COMMENT_MATCHED) {
						$stuff_to_parse .= $char;
					} else {
						$result .= $test_str;
						unset($test_str);
						$COMMENT_MATCHED = FALSE;
					}
				}
				// Parse the last bit
				$result .= $this->parse_non_string_part($stuff_to_parse);
				$stuff_to_parse = '';
			} else {
				$result .= $this->hsc($part);
			}
			// Close the <span> that surrounds the block
			if ($STRICTATTRS != '') {
				$result = str_replace("\n", "</span>\n<span$STRICTATTRS>", $result);
				$result .= '</span>';
			}
			$endresult .= $result;
			unset($part, $parts[$key], $result);
		}
		//This fix is related to SF#1923020, but has to be applied regardless of
		//actually highlighting symbols.
		/** NOTE: memorypeak #3 */
		$endresult = str_replace(array('<SEMI>', '<PIPE>'), array(';', '|'), $endresult);
		//        // Parse the last stuff (redundant?)
		//        $result .= $this->parse_non_string_part($stuff_to_parse);
		// Lop off the very first and last spaces
		//        $result = substr($result, 1, -1);
		// We're finished: stop timing
		$this->set_time($start_time, microtime());
		$this->finalise($endresult);
		return $endresult;
	}

	/**
	 * Swaps out spaces and tabs for HTML indentation. Not needed if
	 * the code is in a pre block...
	 * @param  string The source to indent (reference!)
	 * @since  1.0.0
	 * @access private
	 */
	function indent(&$result) {
		/// Replace tabs with the correct number of spaces
		if (FALSE !== strpos($result, "\t")) {
			$lines = explode("\n", $result);
			$result = NULL; //Save memory while we process the lines individually
			$tab_width = $this->get_real_tab_width();
			$tab_string = '&nbsp;'.str_repeat(' ', $tab_width);
			for ($key = 0, $n = count($lines); $key < $n; $key++) {
				$line = $lines[$key];
				if (FALSE === strpos($line, "\t")) {
					continue;
				}
				$pos = 0;
				$length = strlen($line);
				$lines[$key] = ''; // reduce memory
				$IN_TAG = FALSE;
				for ($i = 0; $i < $length; ++$i) {
					$char = $line[$i];
					// Simple engine to work out whether we're in a tag.
					// If we are we modify $pos. This is so we ignore HTML
					// in the line and only workout the tab replacement
					// via the actual content of the string
					// This test could be improved to include strings in the
					// html so that < or > would be allowed in user's styles
					// (e.g. quotes: '<' '>'; or similar)
					if ($IN_TAG) {
						if ('>' == $char) {
							$IN_TAG = FALSE;
						}
						$lines[$key] .= $char;
					} else if ('<' == $char) {
						$IN_TAG = TRUE;
						$lines[$key] .= '<';
					} else if ('&' == $char) {
						$substr = substr($line, $i+3, 5);
						$posi = strpos($substr, ';');
						if (FALSE === $posi) {
							++$pos;
						} else {
							$pos -= $posi+2;
						}
						$lines[$key] .= $char;
					} else if ("\t" == $char) {
						$str = '';
						// OPTIMISE - move $strs out. Make an array:
						// $tabs = array(
						//  1 => '&nbsp;',
						//  2 => '&nbsp; ',
						//  3 => '&nbsp; &nbsp;' etc etc
						// to use instead of building a string every time
						$tab_end_width = $tab_width-($pos%$tab_width); //Moved out of the look as it doesn't change within the loop
						if (($pos & 1) || 1 == $tab_end_width) {
							$str .= substr($tab_string, 6, $tab_end_width);
						} else {
							$str .= substr($tab_string, 0, $tab_end_width+5);
						}
						$lines[$key] .= $str;
						$pos += $tab_end_width;
						if (FALSE === strpos($line, "\t", $i+1)) {
							$lines[$key] .= substr($line, $i+1);
							break;
						}
					} else if (0 == $pos && ' ' == $char) {
						$lines[$key] .= '&nbsp;';
						++$pos;
					} else {
						$lines[$key] .= $char;
						++$pos;
					}
				}
			}
			$result = implode("\n", $lines);
			unset($lines); //We don't need the lines separated beyond this --- free them!
		}
		// Other whitespace
		// BenBE: Fix to reduce the number of replacements to be done
		$result = preg_replace('/^ /m', '&nbsp;', $result);
		$result = str_replace('  ', ' &nbsp;', $result);
		if ($this->line_numbers == GESHI_NO_LINE_NUMBERS && $this->header_type != GESHI_HEADER_PRE_TABLE) {
			if ($this->line_ending === NULL) {
				$result = nl2br($result);
			} else {
				$result = str_replace("\n", $this->line_ending, $result);
			}
		}
	}

	/**
	 * Changes the case of a keyword for those languages where a change is asked for
	 * @param  string The keyword to change the case of
	 * @return string The keyword with its case changed
	 * @since  1.0.0
	 * @access private
	 */
	function change_case($instr) {
		switch ($this->language_data['CASE_KEYWORDS']) {
			case GESHI_CAPS_UPPER:
				return strtoupper($instr);
			case GESHI_CAPS_LOWER:
				return strtolower($instr);
			default:
				return $instr;
		}
	}

	/**
	 * Handles replacements of keywords to include markup and links if requested
	 * @param  string The keyword to add the Markup to
	 * @return The HTML for the match found
	 * @since  1.0.8
	 * @access private
	 * @todo   Get rid of ender in keyword links
	 */
	function handle_keyword_replace($match) {
		$k = $this->_kw_replace_group;
		$keyword = $match[0];
		$before = '';
		$after = '';
		if ($this->keyword_links) {
			// Keyword links have been ebabled
			if (isset($this->language_data['URLS'][$k]) && $this->language_data['URLS'][$k] != '') {
				// There is a base group for this keyword
				// Old system: strtolower
				//$keyword = ( $this->language_data['CASE_SENSITIVE'][$group] ) ? $keyword : strtolower($keyword);
				// New system: get keyword from language file to get correct case
				if (!$this->language_data['CASE_SENSITIVE'][$k] && strpos($this->language_data['URLS'][$k], '{FNAME}') !== FALSE) {
					foreach ($this->language_data['KEYWORDS'][$k] as $word) {
						if (strcasecmp($word, $keyword) == 0) {
							break;
						}
					}
				} else {
					$word = $keyword;
				}
				$before = '<|UR1|"'.str_replace(array('{FNAME}', '{FNAMEL}', '{FNAMEU}',
													  '.'), array(str_replace('+', '%20', urlencode($this->hsc($word))),
																  str_replace('+', '%20', urlencode($this->hsc(strtolower($word)))),
																  str_replace('+', '%20', urlencode($this->hsc(strtoupper($word)))),
																  '<DOT>'), $this->language_data['URLS'][$k]).'">';
				$after = '</a>';
			}
		}
		return $before.'<|/'.$k.'/>'.$this->change_case($keyword).'|>'.$after;
	}

	/**
	 * handles regular expressions highlighting-definitions with callback functions
	 * @note   this is a callback, don't use it directly
	 * @param array the matches array
	 * @return The highlighted string
	 * @since  1.0.8
	 * @access private
	 */
	function handle_regexps_callback($matches) {
		// before: "' style=\"' . call_user_func(\"$func\", '\\1') . '\"\\1|>'",
		return ' style="'.call_user_func($this->language_data['STYLES']['REGEXPS'][$this->_rx_key], $matches[1]).'"'.$matches[1].'|>';
	}

	/**
	 * handles newlines in REGEXPS matches. Set the _hmr_* vars before calling this
	 * @note   this is a callback, don't use it directly
	 * @param array the matches array
	 * @return string
	 * @since  1.0.8
	 * @access private
	 */
	function handle_multiline_regexps($matches) {
		$before = $this->_hmr_before;
		$after = $this->_hmr_after;
		if ($this->_hmr_replace) {
			$replace = $this->_hmr_replace;
			$search = array();
			foreach (array_keys($matches) as $k) {
				$search[] = '\\'.$k;
			}
			$before = str_replace($search, $matches, $before);
			$after = str_replace($search, $matches, $after);
			$replace = str_replace($search, $matches, $replace);
		} else {
			$replace = $matches[0];
		}
		return $before.'<|!REG3XP'.$this->_hmr_key.'!>'.str_replace("\n", "|>\n<|!REG3XP".$this->_hmr_key.'!>', $replace).'|>'.$after;
	}

	/**
	 * Takes a string that has no strings or comments in it, and highlights
	 * stuff like keywords, numbers and methods.
	 * @param string The string to parse for keyword, numbers etc.
	 * @since  1.0.0
	 * @access private
	 * @todo   BUGGY! Why? Why not build string and return?
	 */
	function parse_non_string_part($stuff_to_parse) {
		$stuff_to_parse = ' '.$this->hsc($stuff_to_parse);
		// Highlight keywords
		$disallowed_before = "(?<![a-zA-Z0-9\$_\|\#|^&";
		$disallowed_after = "(?![a-zA-Z0-9_\|%\\-&;";
		if ($this->lexic_permissions['STRINGS']) {
			$quotemarks = preg_quote(implode($this->language_data['QUOTEMARKS']), '/');
			$disallowed_before .= $quotemarks;
			$disallowed_after .= $quotemarks;
		}
		$disallowed_before .= "])";
		$disallowed_after .= "])";
		$parser_control_pergroup = FALSE;
		if (isset($this->language_data['PARSER_CONTROL'])) {
			if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'])) {
				$x = 0; // check wether per-keyword-group parser_control is enabled
				if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS']['DISALLOWED_BEFORE'])) {
					$disallowed_before = $this->language_data['PARSER_CONTROL']['KEYWORDS']['DISALLOWED_BEFORE'];
					++$x;
				}
				if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS']['DISALLOWED_AFTER'])) {
					$disallowed_after = $this->language_data['PARSER_CONTROL']['KEYWORDS']['DISALLOWED_AFTER'];
					++$x;
				}
				$parser_control_pergroup = (count($this->language_data['PARSER_CONTROL']['KEYWORDS'])-$x) > 0;
			}
		}
		foreach (array_keys($this->language_data['KEYWORDS']) as $k) {
			if (!isset($this->lexic_permissions['KEYWORDS'][$k]) || $this->lexic_permissions['KEYWORDS'][$k]) {
				$case_sensitive = $this->language_data['CASE_SENSITIVE'][$k];
				$modifiers = $case_sensitive ? '' : 'i';
				// NEW in 1.0.8 - per-keyword-group parser control
				$disallowed_before_local = $disallowed_before;
				$disallowed_after_local = $disallowed_after;
				if ($parser_control_pergroup && isset($this->language_data['PARSER_CONTROL']['KEYWORDS'][$k])) {
					if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'][$k]['DISALLOWED_BEFORE'])) {
						$disallowed_before_local = $this->language_data['PARSER_CONTROL']['KEYWORDS'][$k]['DISALLOWED_BEFORE'];
					}
					if (isset($this->language_data['PARSER_CONTROL']['KEYWORDS'][$k]['DISALLOWED_AFTER'])) {
						$disallowed_after_local = $this->language_data['PARSER_CONTROL']['KEYWORDS'][$k]['DISALLOWED_AFTER'];
					}
				}
				$this->_kw_replace_group = $k;
				//NEW in 1.0.8, the cached regexp list
				// since we don't want PHP / PCRE to crash due to too large patterns we split them into smaller chunks
				for ($set = 0, $set_length = count($this->language_data['CACHED_KEYWORD_LISTS'][$k]); $set < $set_length; ++$set) {
					$keywordset =& $this->language_data['CACHED_KEYWORD_LISTS'][$k][$set];
					// Might make a more unique string for putting the number in soon
					// Basically, we don't put the styles in yet because then the styles themselves will
					// get highlighted if the language has a CSS keyword in it (like CSS, for example ;))
					$stuff_to_parse = preg_replace_callback("/$disallowed_before_local({$keywordset})(?!\<DOT\>(?:htm|php|aspx?))$disallowed_after_local/$modifiers", array($this,
																																											'handle_keyword_replace'), $stuff_to_parse);
				}
			}
		}
		// Regular expressions
		foreach ($this->language_data['REGEXPS'] as $key => $regexp) {
			if ($this->lexic_permissions['REGEXPS'][$key]) {
				if (is_array($regexp)) {
					if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
						// produce valid HTML when we match multiple lines
						$this->_hmr_replace = $regexp[GESHI_REPLACE];
						$this->_hmr_before = $regexp[GESHI_BEFORE];
						$this->_hmr_key = $key;
						$this->_hmr_after = $regexp[GESHI_AFTER];
						$stuff_to_parse = preg_replace_callback("/".$regexp[GESHI_SEARCH]."/{$regexp[GESHI_MODIFIERS]}", array($this,
																															   'handle_multiline_regexps'), $stuff_to_parse);
						$this->_hmr_replace = FALSE;
						$this->_hmr_before = '';
						$this->_hmr_after = '';
					} else {
						$stuff_to_parse = preg_replace('/'.$regexp[GESHI_SEARCH].'/'.$regexp[GESHI_MODIFIERS], $regexp[GESHI_BEFORE].'<|!REG3XP'.$key.'!>'.$regexp[GESHI_REPLACE].'|>'.$regexp[GESHI_AFTER], $stuff_to_parse);
					}
				} else {
					if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
						// produce valid HTML when we match multiple lines
						$this->_hmr_key = $key;
						$stuff_to_parse = preg_replace_callback("/(".$regexp.")/", array($this,
																						 'handle_multiline_regexps'), $stuff_to_parse);
						$this->_hmr_key = '';
					} else {
						$stuff_to_parse = preg_replace("/(".$regexp.")/", "<|!REG3XP$key!>\\1|>", $stuff_to_parse);
					}
				}
			}
		}
		// Highlight numbers. As of 1.0.8 we support different types of numbers
		$numbers_found = FALSE;
		if ($this->lexic_permissions['NUMBERS'] && preg_match($this->language_data['PARSER_CONTROL']['NUMBERS']['PRECHECK_RX'], $stuff_to_parse)) {
			$numbers_found = TRUE;
			//For each of the formats ...
			foreach ($this->language_data['NUMBERS_RXCACHE'] as $id => $regexp) {
				//Check if it should be highlighted ...
				$stuff_to_parse = preg_replace($regexp, "<|/NUM!$id/>\\1|>", $stuff_to_parse);
			}
		}
		//
		// Now that's all done, replace /[number]/ with the correct styles
		//
		foreach (array_keys($this->language_data['KEYWORDS']) as $k) {
			if (!$this->use_classes) {
				$attributes = ' style="'.(isset($this->language_data['STYLES']['KEYWORDS'][$k]) ? $this->language_data['STYLES']['KEYWORDS'][$k] : "").'"';
			} else {
				$attributes = ' class="kw'.$k.'"';
			}
			$stuff_to_parse = str_replace("<|/$k/>", "<|$attributes>", $stuff_to_parse);
		}
		if ($numbers_found) {
			// Put number styles in
			foreach ($this->language_data['NUMBERS_RXCACHE'] as $id => $regexp) {
				//Commented out for now, as this needs some review ...
				//                if ($numbers_permissions & $id) {
				//Get the appropriate style ...
				//Checking for unset styles is done by the style cache builder ...
				if (!$this->use_classes) {
					$attributes = ' style="'.$this->language_data['STYLES']['NUMBERS'][$id].'"';
				} else {
					$attributes = ' class="nu'.$id.'"';
				}
				//Set in the correct styles ...
				$stuff_to_parse = str_replace("/NUM!$id/", $attributes, $stuff_to_parse);
				//                }
			}
		}
		// Highlight methods and fields in objects
		if ($this->lexic_permissions['METHODS'] && $this->language_data['OOLANG']) {
			$oolang_spaces = "[\s]*";
			$oolang_before = "";
			$oolang_after = "[a-zA-Z][a-zA-Z0-9_]*";
			if (isset($this->language_data['PARSER_CONTROL'])) {
				if (isset($this->language_data['PARSER_CONTROL']['OOLANG'])) {
					if (isset($this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_BEFORE'])) {
						$oolang_before = $this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_BEFORE'];
					}
					if (isset($this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_AFTER'])) {
						$oolang_after = $this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_AFTER'];
					}
					if (isset($this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_SPACES'])) {
						$oolang_spaces = $this->language_data['PARSER_CONTROL']['OOLANG']['MATCH_SPACES'];
					}
				}
			}
			foreach ($this->language_data['OBJECT_SPLITTERS'] as $key => $splitter) {
				if (FALSE !== strpos($stuff_to_parse, $splitter)) {
					if (!$this->use_classes) {
						$attributes = ' style="'.$this->language_data['STYLES']['METHODS'][$key].'"';
					} else {
						$attributes = ' class="me'.$key.'"';
					}
					$stuff_to_parse = preg_replace("/($oolang_before)(".preg_quote($this->language_data['OBJECT_SPLITTERS'][$key], '/').")($oolang_spaces)($oolang_after)/", "\\1\\2\\3<|$attributes>\\4|>", $stuff_to_parse);
				}
			}
		}
		//
		// Highlight brackets. Yes, I've tried adding a semi-colon to this list.
		// You try it, and see what happens ;)
		// TODO: Fix lexic permissions not converting entities if shouldn't
		// be highlighting regardless
		//
		if ($this->lexic_permissions['BRACKETS']) {
			$stuff_to_parse = str_replace($this->language_data['CACHE_BRACKET_MATCH'], $this->language_data['CACHE_BRACKET_REPLACE'], $stuff_to_parse);
		}
		//FIX for symbol highlighting ...
		if ($this->lexic_permissions['SYMBOLS'] && !empty($this->language_data['SYMBOLS'])) {
			//Get all matches and throw away those witin a block that is already highlighted... (i.e. matched by a regexp)
			$n_symbols = preg_match_all("/<\|(?:<DOT>|[^>])+>(?:(?!\|>).*?)\|>|<\/a>|(?:".$this->language_data['SYMBOL_SEARCH'].")+(?![^<]+?>)/", $stuff_to_parse, $pot_symbols, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
			$global_offset = 0;
			for ($s_id = 0; $s_id < $n_symbols; ++$s_id) {
				$symbol_match = $pot_symbols[$s_id][0][0];
				if (strpos($symbol_match, '<') !== FALSE || strpos($symbol_match, '>') !== FALSE) {
					// already highlighted blocks _must_ include either < or >
					// so if this conditional applies, we have to skip this match
					// BenBE: UNLESS the block contains <SEMI> or <PIPE>
					if (strpos($symbol_match, '<SEMI>') === FALSE && strpos($symbol_match, '<PIPE>') === FALSE) {
						continue;
					}
				}
				// if we reach this point, we have a valid match which needs to be highlighted
				$symbol_length = strlen($symbol_match);
				$symbol_offset = $pot_symbols[$s_id][0][1];
				unset($pot_symbols[$s_id]);
				$symbol_end = $symbol_length+$symbol_offset;
				$symbol_hl = "";
				// if we have multiple styles, we have to handle them properly
				if ($this->language_data['MULTIPLE_SYMBOL_GROUPS']) {
					$old_sym = -1;
					// Split the current stuff to replace into its atomic symbols ...
					preg_match_all("/".$this->language_data['SYMBOL_SEARCH']."/", $symbol_match, $sym_match_syms, PREG_PATTERN_ORDER);
					foreach ($sym_match_syms[0] as $sym_ms) {
						//Check if consequtive symbols belong to the same group to save output ...
						if (isset($this->language_data['SYMBOL_DATA'][$sym_ms]) && ($this->language_data['SYMBOL_DATA'][$sym_ms] != $old_sym)) {
							if (-1 != $old_sym) {
								$symbol_hl .= "|>";
							}
							$old_sym = $this->language_data['SYMBOL_DATA'][$sym_ms];
							if (!$this->use_classes) {
								$symbol_hl .= '<| style="'.$this->language_data['STYLES']['SYMBOLS'][$old_sym].'">';
							} else {
								$symbol_hl .= '<| class="sy'.$old_sym.'">';
							}
						}
						$symbol_hl .= $sym_ms;
					}
					unset($sym_match_syms);
					//Close remaining tags and insert the replacement at the right position ...
					//Take caution if symbol_hl is empty to avoid doubled closing spans.
					if (-1 != $old_sym) {
						$symbol_hl .= "|>";
					}
				} else {
					if (!$this->use_classes) {
						$symbol_hl = '<| style="'.$this->language_data['STYLES']['SYMBOLS'][0].'">';
					} else {
						$symbol_hl = '<| class="sy0">';
					}
					$symbol_hl .= $symbol_match.'|>';
				}
				$stuff_to_parse = substr_replace($stuff_to_parse, $symbol_hl, $symbol_offset+$global_offset, $symbol_length);
				// since we replace old text with something of different size,
				// we'll have to keep track of the differences
				$global_offset += strlen($symbol_hl)-$symbol_length;
			}
		}
		//FIX for symbol highlighting ...
		// Add class/style for regexps
		foreach (array_keys($this->language_data['REGEXPS']) as $key) {
			if ($this->lexic_permissions['REGEXPS'][$key]) {
				if (is_callable($this->language_data['STYLES']['REGEXPS'][$key])) {
					$this->_rx_key = $key;
					$stuff_to_parse = preg_replace_callback("/!REG3XP$key!(.*)\|>/U", array($this,
																							'handle_regexps_callback'), $stuff_to_parse);
				} else {
					if (!$this->use_classes) {
						$attributes = ' style="'.$this->language_data['STYLES']['REGEXPS'][$key].'"';
					} else {
						if (is_array($this->language_data['REGEXPS'][$key]) && array_key_exists(GESHI_CLASS, $this->language_data['REGEXPS'][$key])) {
							$attributes = ' class="'.$this->language_data['REGEXPS'][$key][GESHI_CLASS].'"';
						} else {
							$attributes = ' class="re'.$key.'"';
						}
					}
					$stuff_to_parse = str_replace("!REG3XP$key!", "$attributes", $stuff_to_parse);
				}
			}
		}
		// Replace <DOT> with . for urls
		$stuff_to_parse = str_replace('<DOT>', '.', $stuff_to_parse);
		// Replace <|UR1| with <a href= for urls also
		if (isset($this->link_styles[GESHI_LINK])) {
			if ($this->use_classes) {
				$stuff_to_parse = str_replace('<|UR1|', '<a'.$this->link_target.' href=', $stuff_to_parse);
			} else {
				$stuff_to_parse = str_replace('<|UR1|', '<a'.$this->link_target.' style="'.$this->link_styles[GESHI_LINK].'" href=', $stuff_to_parse);
			}
		} else {
			$stuff_to_parse = str_replace('<|UR1|', '<a'.$this->link_target.' href=', $stuff_to_parse);
		}
		//
		// NOW we add the span thingy ;)
		//
		$stuff_to_parse = str_replace('<|', '<span', $stuff_to_parse);
		$stuff_to_parse = str_replace('|>', '</span>', $stuff_to_parse);
		return substr($stuff_to_parse, 1);
	}

	/**
	 * Sets the time taken to parse the code
	 * @param microtime The time when parsing started
	 * @param microtime The time when parsing ended
	 * @since  1.0.2
	 * @access private
	 */
	function set_time($start_time, $end_time) {
		$start = explode(' ', $start_time);
		$end = explode(' ', $end_time);
		$this->time = $end[0]+$end[1]-$start[0]-$start[1];
	}

	/**
	 * Gets the time taken to parse the code
	 * @return double The time taken to parse the code
	 * @since  1.0.2
	 */
	function get_time() {
		return $this->time;
	}

	/**
	 * Merges arrays recursively, overwriting values of the first array with values of later arrays
	 * @since  1.0.8
	 * @access private
	 */
	function merge_arrays() {
		$arrays = func_get_args();
		$narrays = count($arrays);
		// check arguments
		// comment out if more performance is necessary (in this case the foreach loop will trigger a warning if the argument is not an array)
		for ($i = 0; $i < $narrays; $i++) {
			if (!is_array($arrays[$i])) {
				// also array_merge_recursive returns nothing in this case
				trigger_error('Argument #'.($i+1).' is not an array - trying to merge array with scalar! Returning false!', E_USER_WARNING);
				return FALSE;
			}
		}
		// the first array is in the output set in every case
		$ret = $arrays[0];
		// merege $ret with the remaining arrays
		for ($i = 1; $i < $narrays; $i++) {
			foreach ($arrays[$i] as $key => $value) {
				if (is_array($value) && isset($ret[$key])) {
					// if $ret[$key] is not an array you try to merge an scalar value with an array - the result is not defined (incompatible arrays)
					// in this case the call will trigger an E_USER_WARNING and the $ret[$key] will be false.
					$ret[$key] = $this->merge_arrays($ret[$key], $value);
				} else {
					$ret[$key] = $value;
				}
			}
		}
		return $ret;
	}

	/**
	 * Gets language information and stores it for later use
	 * @param string The filename of the language file you want to load
	 * @since  1.0.0
	 * @access private
	 * @todo   Needs to load keys for lexic permissions for keywords, regexps etc
	 */
	function load_language($file_name) {
		if ($file_name == $this->loaded_language) {
			// this file is already loaded!
			return;
		}
		//Prepare some stuff before actually loading the language file
		$this->loaded_language = $file_name;
		$this->parse_cache_built = FALSE;
		$this->enable_highlighting();
		$language_data = array();
		//Load the language file
		require $file_name;
		// Perhaps some checking might be added here later to check that
		// $language data is a valid thing but maybe not
		$this->language_data = $language_data;
		// Set strict mode if should be set
		$this->strict_mode = $this->language_data['STRICT_MODE_APPLIES'];
		// Set permissions for all lexics to true
		// so they'll be highlighted by default
		foreach (array_keys($this->language_data['KEYWORDS']) as $key) {
			if (!empty($this->language_data['KEYWORDS'][$key])) {
				$this->lexic_permissions['KEYWORDS'][$key] = TRUE;
			} else {
				$this->lexic_permissions['KEYWORDS'][$key] = FALSE;
			}
		}
		foreach (array_keys($this->language_data['COMMENT_SINGLE']) as $key) {
			$this->lexic_permissions['COMMENTS'][$key] = TRUE;
		}
		foreach (array_keys($this->language_data['REGEXPS']) as $key) {
			$this->lexic_permissions['REGEXPS'][$key] = TRUE;
		}
		// for BenBE and future code reviews:
		// we can use empty here since we only check for existance and emptiness of an array
		// if it is not an array at all but rather false or null this will work as intended as well
		// even if $this->language_data['PARSER_CONTROL'] is undefined this won't trigger a notice
		if (!empty($this->language_data['PARSER_CONTROL']['ENABLE_FLAGS'])) {
			foreach ($this->language_data['PARSER_CONTROL']['ENABLE_FLAGS'] as $flag => $value) {
				// it's either true or false and maybe is true as well
				$perm = $value !== GESHI_NEVER;
				if ($flag == 'ALL') {
					$this->enable_highlighting($perm);
					continue;
				}
				if (!isset($this->lexic_permissions[$flag])) {
					// unknown lexic permission
					continue;
				}
				if (is_array($this->lexic_permissions[$flag])) {
					foreach ($this->lexic_permissions[$flag] as $key => $val) {
						$this->lexic_permissions[$flag][$key] = $perm;
					}
				} else {
					$this->lexic_permissions[$flag] = $perm;
				}
			}
			unset($this->language_data['PARSER_CONTROL']['ENABLE_FLAGS']);
		}
		//Fix: Problem where hardescapes weren't handled if no ESCAPE_CHAR was given
		//You need to set one for HARDESCAPES only in this case.
		if (!isset($this->language_data['HARDCHAR'])) {
			$this->language_data['HARDCHAR'] = $this->language_data['ESCAPE_CHAR'];
		}
		//NEW in 1.0.8: Allow styles to be loaded from a separate file to override defaults
		$style_filename = substr($file_name, 0, -4).'.style.php';
		if (is_readable($style_filename)) {
			//Clear any style_data that could have been set before ...
			if (isset($style_data)) {
				unset($style_data);
			}
			//Read the Style Information from the style file
			include $style_filename;
			//Apply the new styles to our current language styles
			if (isset($style_data) && is_array($style_data)) {
				$this->language_data['STYLES'] = $this->merge_arrays($this->language_data['STYLES'], $style_data);
			}
		}
	}

	/**
	 * Takes the parsed code and various options, and creates the HTML
	 * surrounding it to make it look nice.
	 * @param  string The code already parsed (reference!)
	 * @since  1.0.0
	 * @access private
	 */
	function finalise(&$parsed_code) {
		// Remove end parts of important declarations
		// This is BUGGY!! My fault for bad code: fix coming in 1.2
		// @todo Remove this crap
		if ($this->enable_important_blocks && (strpos($parsed_code, $this->hsc(GESHI_START_IMPORTANT)) === FALSE)) {
			$parsed_code = str_replace($this->hsc(GESHI_END_IMPORTANT), '', $parsed_code);
		}
		// Add HTML whitespace stuff if we're using the <div> header
		if ($this->header_type != GESHI_HEADER_PRE && $this->header_type != GESHI_HEADER_PRE_VALID) {
			$this->indent($parsed_code);
		}
		// purge some unnecessary stuff
		/** NOTE: memorypeak #1 */
		$parsed_code = preg_replace('#<span[^>]+>(\s*)</span>#', '\\1', $parsed_code);
		// If we are using IDs for line numbers, there needs to be an overall
		// ID set to prevent collisions.
		if ($this->add_ids && !$this->overall_id) {
			$this->overall_id = 'geshi-'.substr(md5(microtime()), 0, 4);
		}
		// Get code into lines
		/** NOTE: memorypeak #2 */
		$code = explode("\n", $parsed_code);
		$parsed_code = $this->header();
		// If we're using line numbers, we insert <li>s and appropriate
		// markup to style them (otherwise we don't need to do anything)
		if ($this->line_numbers != GESHI_NO_LINE_NUMBERS && $this->header_type != GESHI_HEADER_PRE_TABLE) {
			// If we're using the <pre> header, we shouldn't add newlines because
			// the <pre> will line-break them (and the <li>s already do this for us)
			$ls = ($this->header_type != GESHI_HEADER_PRE && $this->header_type != GESHI_HEADER_PRE_VALID) ? "\n" : '';
			// Set vars to defaults for following loop
			$i = 0;
			// Foreach line...
			for ($i = 0, $n = count($code); $i < $n;) {
				//Reset the attributes for a new line ...
				$attrs = array();
				// Make lines have at least one space in them if they're empty
				// BenBE: Checking emptiness using trim instead of relying on blanks
				if ('' == trim($code[$i])) {
					$code[$i] = '&nbsp;';
				}
				// If this is a "special line"...
				if ($this->line_numbers == GESHI_FANCY_LINE_NUMBERS && $i%$this->line_nth_row == ($this->line_nth_row-1)) {
					// Set the attributes to style the line
					if ($this->use_classes) {
						//$attr = ' class="li2"';
						$attrs['class'][] = 'li2';
						$def_attr = ' class="de2"';
					} else {
						//$attr = ' style="' . $this->line_style2 . '"';
						$attrs['style'][] = $this->line_style2;
						// This style "covers up" the special styles set for special lines
						// so that styles applied to special lines don't apply to the actual
						// code on that line
						$def_attr = ' style="'.$this->code_style.'"';
					}
				} else {
					if ($this->use_classes) {
						//$attr = ' class="li1"';
						$attrs['class'][] = 'li1';
						$def_attr = ' class="de1"';
					} else {
						//$attr = ' style="' . $this->line_style1 . '"';
						$attrs['style'][] = $this->line_style1;
						$def_attr = ' style="'.$this->code_style.'"';
					}
				}
				//Check which type of tag to insert for this line
				if ($this->header_type == GESHI_HEADER_PRE_VALID) {
					$start = "<pre$def_attr>";
					$end = '</pre>';
				} else {
					// Span or div?
					$start = "<div$def_attr>";
					$end = '</div>';
				}
				++$i;
				// Are we supposed to use ids? If so, add them
				if ($this->add_ids) {
					$attrs['id'][] = "$this->overall_id-$i";
				}
				//Is this some line with extra styles???
				if (in_array($i, $this->highlight_extra_lines)) {
					if ($this->use_classes) {
						if (isset($this->highlight_extra_lines_styles[$i])) {
							$attrs['class'][] = "lx$i";
						} else {
							$attrs['class'][] = "ln-xtra";
						}
					} else {
						array_push($attrs['style'], $this->get_line_style($i));
					}
				}
				// Add in the line surrounded by appropriate list HTML
				$attr_string = '';
				foreach ($attrs as $key => $attr) {
					$attr_string .= ' '.$key.'="'.implode(' ', $attr).'"';
				}
				$parsed_code .= "<li$attr_string>$start{$code[$i-1]}$end</li>$ls";
				unset($code[$i-1]);
			}
		} else {
			$n = count($code);
			if ($this->use_classes) {
				$attributes = ' class="de1"';
			} else {
				$attributes = ' style="'.$this->code_style.'"';
			}
			if ($this->header_type == GESHI_HEADER_PRE_VALID) {
				$parsed_code .= '<pre'.$attributes.'>';
			} elseif ($this->header_type == GESHI_HEADER_PRE_TABLE) {
				if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
					if ($this->use_classes) {
						$attrs = ' class="ln"';
					} else {
						$attrs = ' style="'.$this->table_linenumber_style.'"';
					}
					$parsed_code .= '<td'.$attrs.'><pre'.$attributes.'>';
					// get linenumbers
					// we don't merge it with the for below, since it should be better for
					// memory consumption this way
					// @todo: but... actually it would still be somewhat nice to merge the two loops
					//        the mem peaks are at different positions
					for ($i = 0; $i < $n; ++$i) {
						$close = 0;
						// fancy lines
						if ($this->line_numbers == GESHI_FANCY_LINE_NUMBERS && $i%$this->line_nth_row == ($this->line_nth_row-1)) {
							// Set the attributes to style the line
							if ($this->use_classes) {
								$parsed_code .= '<span class="xtra li2"><span class="de2">';
							} else {
								// This style "covers up" the special styles set for special lines
								// so that styles applied to special lines don't apply to the actual
								// code on that line
								$parsed_code .= '<span style="display:block;'.$this->line_style2.'">'.'<span style="'.$this->code_style.'">';
							}
							$close += 2;
						}
						//Is this some line with extra styles???
						if (in_array($i+1, $this->highlight_extra_lines)) {
							if ($this->use_classes) {
								if (isset($this->highlight_extra_lines_styles[$i])) {
									$parsed_code .= "<span class=\"xtra lx$i\">";
								} else {
									$parsed_code .= "<span class=\"xtra ln-xtra\">";
								}
							} else {
								$parsed_code .= "<span style=\"display:block;".$this->get_line_style($i)."\">";
							}
							++$close;
						}
						$parsed_code .= $this->line_numbers_start+$i;
						if ($close) {
							$parsed_code .= str_repeat('</span>', $close);
						} else if ($i != $n) {
							$parsed_code .= "\n";
						}
					}
					$parsed_code .= '</pre></td><td'.$attributes.'>';
				}
				$parsed_code .= '<pre'.$attributes.'>';
			}
			// No line numbers, but still need to handle highlighting lines extra.
			// Have to use divs so the full width of the code is highlighted
			$close = 0;
			for ($i = 0; $i < $n; ++$i) {
				// Make lines have at least one space in them if they're empty
				// BenBE: Checking emptiness using trim instead of relying on blanks
				if ('' == trim($code[$i])) {
					$code[$i] = '&nbsp;';
				}
				// fancy lines
				if ($this->line_numbers == GESHI_FANCY_LINE_NUMBERS && $i%$this->line_nth_row == ($this->line_nth_row-1)) {
					// Set the attributes to style the line
					if ($this->use_classes) {
						$parsed_code .= '<span class="xtra li2"><span class="de2">';
					} else {
						// This style "covers up" the special styles set for special lines
						// so that styles applied to special lines don't apply to the actual
						// code on that line
						$parsed_code .= '<span style="display:block;'.$this->line_style2.'">'.'<span style="'.$this->code_style.'">';
					}
					$close += 2;
				}
				//Is this some line with extra styles???
				if (in_array($i+1, $this->highlight_extra_lines)) {
					if ($this->use_classes) {
						if (isset($this->highlight_extra_lines_styles[$i])) {
							$parsed_code .= "<span class=\"xtra lx$i\">";
						} else {
							$parsed_code .= "<span class=\"xtra ln-xtra\">";
						}
					} else {
						$parsed_code .= "<span style=\"display:block;".$this->get_line_style($i)."\">";
					}
					++$close;
				}
				$parsed_code .= $code[$i];
				if ($close) {
					$parsed_code .= str_repeat('</span>', $close);
					$close = 0;
				} elseif ($i+1 < $n) {
					$parsed_code .= "\n";
				}
				unset($code[$i]);
			}
			if ($this->header_type == GESHI_HEADER_PRE_VALID || $this->header_type == GESHI_HEADER_PRE_TABLE) {
				$parsed_code .= '</pre>';
			}
			if ($this->header_type == GESHI_HEADER_PRE_TABLE && $this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				$parsed_code .= '</td>';
			}
		}
		$parsed_code .= $this->footer();
	}

	/**
	 * Creates the header for the code block (with correct attributes)
	 * @return string The header for the code block
	 * @since  1.0.0
	 * @access private
	 */
	function header() {
		// Get attributes needed
		/**
		 * @todo   Document behaviour change - class is outputted regardless of whether
		 *         we're using classes or not. Same with style
		 */
		$attributes = ' class="'.$this->_genCSSName($this->language);
		if ($this->overall_class != '') {
			$attributes .= " ".$this->_genCSSName($this->overall_class);
		}
		$attributes .= '"';
		if ($this->overall_id != '') {
			$attributes .= " id=\"{$this->overall_id}\"";
		}
		if ($this->overall_style != '' && !$this->use_classes) {
			$attributes .= ' style="'.$this->overall_style.'"';
		}
		$ol_attributes = '';
		if ($this->line_numbers_start != 1) {
			$ol_attributes .= ' start="'.$this->line_numbers_start.'"';
		}
		// Get the header HTML
		$header = $this->header_content;
		if ($header) {
			if ($this->header_type == GESHI_HEADER_PRE || $this->header_type == GESHI_HEADER_PRE_VALID) {
				$header = str_replace("\n", '', $header);
			}
			$header = $this->replace_keywords($header);
			if ($this->use_classes) {
				$attr = ' class="head"';
			} else {
				$attr = " style=\"{$this->header_content_style}\"";
			}
			if ($this->header_type == GESHI_HEADER_PRE_TABLE && $this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				$header = "<thead><tr><td colspan=\"2\" $attr>$header</td></tr></thead>";
			} else {
				$header = "<div$attr>$header</div>";
			}
		}
		if (GESHI_HEADER_NONE == $this->header_type) {
			if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				return "$header<ol$attributes$ol_attributes>";
			}
			return $header.($this->force_code_block ? '<div>' : '');
		}
		// Work out what to return and do it
		if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
			if ($this->header_type == GESHI_HEADER_PRE) {
				return "<pre$attributes>$header<ol$ol_attributes>";
			} else if ($this->header_type == GESHI_HEADER_DIV || $this->header_type == GESHI_HEADER_PRE_VALID) {
				return "<div$attributes>$header<ol$ol_attributes>";
			} else if ($this->header_type == GESHI_HEADER_PRE_TABLE) {
				return "<table$attributes>$header<tbody><tr class=\"li1\">";
			}
		} else {
			if ($this->header_type == GESHI_HEADER_PRE) {
				return "<pre$attributes>$header".($this->force_code_block ? '<div>' : '');
			} else {
				return "<div$attributes>$header".($this->force_code_block ? '<div>' : '');
			}
		}
	}

	/**
	 * Returns the footer for the code block.
	 * @return string The footer for the code block
	 * @since  1.0.0
	 * @access private
	 */
	function footer() {
		$footer = $this->footer_content;
		if ($footer) {
			if ($this->header_type == GESHI_HEADER_PRE) {
				$footer = str_replace("\n", '', $footer);;
			}
			$footer = $this->replace_keywords($footer);
			if ($this->use_classes) {
				$attr = ' class="foot"';
			} else {
				$attr = " style=\"{$this->footer_content_style}\"";
			}
			if ($this->header_type == GESHI_HEADER_PRE_TABLE && $this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				$footer = "<tfoot><tr><td colspan=\"2\">$footer</td></tr></tfoot>";
			} else {
				$footer = "<div$attr>$footer</div>";
			}
		}
		if (GESHI_HEADER_NONE == $this->header_type) {
			return ($this->line_numbers != GESHI_NO_LINE_NUMBERS) ? '</ol>'.$footer : $footer;
		}
		if ($this->header_type == GESHI_HEADER_DIV || $this->header_type == GESHI_HEADER_PRE_VALID) {
			if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				return "</ol>$footer</div>";
			}
			return ($this->force_code_block ? '</div>' : '')."$footer</div>";
		} elseif ($this->header_type == GESHI_HEADER_PRE_TABLE) {
			if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				return "</tr></tbody>$footer</table>";
			}
			return ($this->force_code_block ? '</div>' : '')."$footer</div>";
		} else {
			if ($this->line_numbers != GESHI_NO_LINE_NUMBERS) {
				return "</ol>$footer</pre>";
			}
			return ($this->force_code_block ? '</div>' : '')."$footer</pre>";
		}
	}

	/**
	 * Replaces certain keywords in the header and footer with
	 * certain configuration values
	 * @param  string The header or footer content to do replacement on
	 * @return string The header or footer with replaced keywords
	 * @since  1.0.2
	 * @access private
	 */
	function replace_keywords($instr) {
		$keywords = $replacements = array();
		$keywords[] = '<TIME>';
		$keywords[] = '{TIME}';
		$replacements[] = $replacements[] = number_format($time = $this->get_time(), 3);
		$keywords[] = '<LANGUAGE>';
		$keywords[] = '{LANGUAGE}';
		$replacements[] = $replacements[] = $this->language_data['LANG_NAME'];
		$keywords[] = '<VERSION>';
		$keywords[] = '{VERSION}';
		$replacements[] = $replacements[] = GESHI_VERSION;
		$keywords[] = '<SPEED>';
		$keywords[] = '{SPEED}';
		if ($time <= 0) {
			$speed = 'N/A';
		} else {
			$speed = strlen($this->source)/$time;
			if ($speed >= 1024) {
				$speed = sprintf("%.2f KB/s", $speed/1024.0);
			} else {
				$speed = sprintf("%.0f B/s", $speed);
			}
		}
		$replacements[] = $replacements[] = $speed;
		return str_replace($keywords, $replacements, $instr);
	}

	/**
	 * Secure replacement for PHP built-in function htmlspecialchars().
	 * See ticket #427 (http://wush.net/trac/wikka/ticket/427) for the rationale
	 * for this replacement function.
	 * The INTERFACE for this function is almost the same as that for
	 * htmlspecialchars(), with the same default for quote style; however, there
	 * is no 'charset' parameter. The reason for this is as follows:
	 * The PHP docs say:
	 *      "The third argument charset defines character set used in conversion."
	 * I suspect PHP's htmlspecialchars() is working at the byte-value level and
	 * thus _needs_ to know (or asssume) a character set because the special
	 * characters to be replaced could exist at different code points in
	 * different character sets. (If indeed htmlspecialchars() works at
	 * byte-value level that goes some  way towards explaining why the
	 * vulnerability would exist in this function, too, and not only in
	 * htmlentities() which certainly is working at byte-value level.)
	 * This replacement function however works at character level and should
	 * therefore be "immune" to character set differences - so no charset
	 * parameter is needed or provided. If a third parameter is passed, it will
	 * be silently ignored.
	 * In the OUTPUT there is a minor difference in that we use '&#39;' instead
	 * of PHP's '&#039;' for a single quote: this provides compatibility with
	 *      get_html_translation_table(HTML_SPECIALCHARS, ENT_QUOTES)
	 * (see comment by mikiwoz at yahoo dot co dot uk on
	 * http://php.net/htmlspecialchars); it also matches the entity definition
	 * for XML 1.0
	 * (http://www.w3.org/TR/xhtml1/dtds.html#a_dtd_Special_characters).
	 * Like PHP we use a numeric character reference instead of '&apos;' for the
	 * single quote. For the other special characters we use the named entity
	 * references, as PHP is doing.
	 * @author      {@link http://wikkawiki.org/JavaWoman Marjolein Katsma}
	 * @license     http://www.gnu.org/copyleft/lgpl.html
	 *              GNU Lesser General Public License
	 * @copyright   Copyright 2007, {@link http://wikkawiki.org/CreditsPage
	 *              Wikka Development Team}
	 * @access      private
	 * @param       string  $string string to be converted
	 * @param       integer $quote_style
	 *                              - ENT_COMPAT:   escapes &, <, > and double quote (default)
	 *                              - ENT_NOQUOTES: escapes only &, < and >
	 *                              - ENT_QUOTES:   escapes &, <, >, double and single quotes
	 * @return      string  converted string
	 * @since       1.0.7.18
	 */
	function hsc($string, $quote_style = ENT_COMPAT) {
		// init
		static $aTransSpecchar = array('&' => '&amp;', '"' => '&quot;', '<' => '&lt;', '>' => '&gt;',
									   //This fix is related to SF#1923020, but has to be applied
									   //regardless of actually highlighting symbols.
									   //Circumvent a bug with symbol highlighting
									   //This is required as ; would produce undesirable side-effects if it
									   //was not to be processed as an entity.
									   ';' => '<SEMI>', // Force ; to be processed as entity
									   '|' => '<PIPE>' // Force | to be processed as entity
		); // ENT_COMPAT set
		switch ($quote_style) {
			case ENT_NOQUOTES: // don't convert double quotes
				unset($aTransSpecchar['"']);
				break;
			case ENT_QUOTES: // convert single quotes as well
				$aTransSpecchar["'"] = '&#39;'; // (apos) htmlspecialchars() uses '&#039;'
				break;
		}
		// return translated string
		return strtr($string, $aTransSpecchar);
	}

	function _genCSSName($name) {
		return (is_numeric($name[0]) ? '_' : '').$name;
	}

	/**
	 * Returns a stylesheet for the highlighted code. If $economy mode
	 * is true, we only return the stylesheet declarations that matter for
	 * this code block instead of the whole thing
	 * @param  boolean Whether to use economy mode or not
	 * @return string A stylesheet built on the data for the current language
	 * @since  1.0.0
	 */
	function get_stylesheet($economy_mode = TRUE) {
		// If there's an error, chances are that the language file
		// won't have populated the language data file, so we can't
		// risk getting a stylesheet...
		if ($this->error) {
			return '';
		}
		//Check if the style rearrangements have been processed ...
		//This also does some preprocessing to check which style groups are useable ...
		if (!isset($this->language_data['NUMBERS_CACHE'])) {
			$this->build_style_cache();
		}
		// First, work out what the selector should be. If there's an ID,
		// that should be used, the same for a class. Otherwise, a selector
		// of '' means that these styles will be applied anywhere
		if ($this->overall_id) {
			$selector = '#'.$this->_genCSSName($this->overall_id);
		} else {
			$selector = '.'.$this->_genCSSName($this->language);
			if ($this->overall_class) {
				$selector .= '.'.$this->_genCSSName($this->overall_class);
			}
		}
		$selector .= ' ';
		// Header of the stylesheet
		if (!$economy_mode) {
			$stylesheet = "/**\n"." * GeSHi Dynamically Generated Stylesheet\n"." * --------------------------------------\n"." * Dynamically generated stylesheet for {$this->language}\n"." * CSS class: {$this->overall_class}, CSS id: {$this->overall_id}\n"." * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann\n"." * (http://qbnz.com/highlighter/ and http://geshi.org/)\n"." * --------------------------------------\n"." */\n";
		} else {
			$stylesheet = "/**\n"." * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann\n"." * (http://qbnz.com/highlighter/ and http://geshi.org/)\n"." */\n";
		}
		// Set the <ol> to have no effect at all if there are line numbers
		// (<ol>s have margins that should be destroyed so all layout is
		// controlled by the set_overall_style method, which works on the
		// <pre> or <div> container). Additionally, set default styles for lines
		if (!$economy_mode || $this->line_numbers != GESHI_NO_LINE_NUMBERS) {
			//$stylesheet .= "$selector, {$selector}ol, {$selector}ol li {margin: 0;}\n";
			$stylesheet .= "$selector.de1, $selector.de2 {{$this->code_style}}\n";
		}
		// Add overall styles
		// note: neglect economy_mode, empty styles are meaningless
		if ($this->overall_style != '') {
			$stylesheet .= "$selector {{$this->overall_style}}\n";
		}
		// Add styles for links
		// note: economy mode does not make _any_ sense here
		//       either the style is empty and thus no selector is needed
		//       or the appropriate key is given.
		foreach ($this->link_styles as $key => $style) {
			if ($style != '') {
				switch ($key) {
					case GESHI_LINK:
						$stylesheet .= "{$selector}a:link {{$style}}\n";
						break;
					case GESHI_HOVER:
						$stylesheet .= "{$selector}a:hover {{$style}}\n";
						break;
					case GESHI_ACTIVE:
						$stylesheet .= "{$selector}a:active {{$style}}\n";
						break;
					case GESHI_VISITED:
						$stylesheet .= "{$selector}a:visited {{$style}}\n";
						break;
				}
			}
		}
		// Header and footer
		// note: neglect economy_mode, empty styles are meaningless
		if ($this->header_content_style != '') {
			$stylesheet .= "$selector.head {{$this->header_content_style}}\n";
		}
		if ($this->footer_content_style != '') {
			$stylesheet .= "$selector.foot {{$this->footer_content_style}}\n";
		}
		// Styles for important stuff
		// note: neglect economy_mode, empty styles are meaningless
		if ($this->important_styles != '') {
			$stylesheet .= "$selector.imp {{$this->important_styles}}\n";
		}
		// Simple line number styles
		if ((!$economy_mode || $this->line_numbers != GESHI_NO_LINE_NUMBERS) && $this->line_style1 != '') {
			$stylesheet .= "{$selector}li, {$selector}.li1 {{$this->line_style1}}\n";
		}
		if ((!$economy_mode || $this->line_numbers != GESHI_NO_LINE_NUMBERS) && $this->table_linenumber_style != '') {
			$stylesheet .= "{$selector}.ln {{$this->table_linenumber_style}}\n";
		}
		// If there is a style set for fancy line numbers, echo it out
		if ((!$economy_mode || $this->line_numbers == GESHI_FANCY_LINE_NUMBERS) && $this->line_style2 != '') {
			$stylesheet .= "{$selector}.li2 {{$this->line_style2}}\n";
		}
		// note: empty styles are meaningless
		foreach ($this->language_data['STYLES']['KEYWORDS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || (isset($this->lexic_permissions['KEYWORDS'][$group]) && $this->lexic_permissions['KEYWORDS'][$group]))) {
				$stylesheet .= "$selector.kw$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['COMMENTS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || (isset($this->lexic_permissions['COMMENTS'][$group]) && $this->lexic_permissions['COMMENTS'][$group]) || (!empty($this->language_data['COMMENT_REGEXP']) && !empty($this->language_data['COMMENT_REGEXP'][$group])))) {
				$stylesheet .= "$selector.co$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['ESCAPE_CHAR'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['ESCAPE_CHAR'])) {
				// NEW: since 1.0.8 we have to handle hardescapes
				if ($group === 'HARD') {
					$group = '_h';
				}
				$stylesheet .= "$selector.es$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['BRACKETS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['BRACKETS'])) {
				$stylesheet .= "$selector.br$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['SYMBOLS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['SYMBOLS'])) {
				$stylesheet .= "$selector.sy$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['STRINGS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['STRINGS'])) {
				// NEW: since 1.0.8 we have to handle hardquotes
				if ($group === 'HARD') {
					$group = '_h';
				}
				$stylesheet .= "$selector.st$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['NUMBERS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['NUMBERS'])) {
				$stylesheet .= "$selector.nu$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['METHODS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || $this->lexic_permissions['METHODS'])) {
				$stylesheet .= "$selector.me$group {{$styles}}\n";
			}
		}
		// note: neglect economy_mode, empty styles are meaningless
		foreach ($this->language_data['STYLES']['SCRIPT'] as $group => $styles) {
			if ($styles != '') {
				$stylesheet .= "$selector.sc$group {{$styles}}\n";
			}
		}
		foreach ($this->language_data['STYLES']['REGEXPS'] as $group => $styles) {
			if ($styles != '' && (!$economy_mode || (isset($this->lexic_permissions['REGEXPS'][$group]) && $this->lexic_permissions['REGEXPS'][$group]))) {
				if (is_array($this->language_data['REGEXPS'][$group]) && array_key_exists(GESHI_CLASS, $this->language_data['REGEXPS'][$group])) {
					$stylesheet .= "$selector.";
					$stylesheet .= $this->language_data['REGEXPS'][$group][GESHI_CLASS];
					$stylesheet .= " {{$styles}}\n";
				} else {
					$stylesheet .= "$selector.re$group {{$styles}}\n";
				}
			}
		}
		// Styles for lines being highlighted extra
		if (!$economy_mode || (count($this->highlight_extra_lines) != count($this->highlight_extra_lines_styles))) {
			$stylesheet .= "{$selector}.ln-xtra, {$selector}li.ln-xtra, {$selector}div.ln-xtra {{$this->highlight_extra_lines_style}}\n";
		}
		$stylesheet .= "{$selector}span.xtra { display:block; }\n";
		foreach ($this->highlight_extra_lines_styles as $lineid => $linestyle) {
			$stylesheet .= "{$selector}.lx$lineid, {$selector}li.lx$lineid, {$selector}div.lx$lineid {{$linestyle}}\n";
		}
		return $stylesheet;
	}

	/**
	 * Get's the style that is used for the specified line
	 * @param int The line number information is requested for
	 * @access private
	 * @since  1.0.7.21
	 */
	function get_line_style($line) {
		//$style = null;
		$style = NULL;
		if (isset($this->highlight_extra_lines_styles[$line])) {
			$style = $this->highlight_extra_lines_styles[$line];
		} else { // if no "extra" style assigned
			$style = $this->highlight_extra_lines_style;
		}
		return $style;
	}

	/**
	 * this functions creates an optimized regular expression list
	 * of an array of strings.
	 * Example:
	 * <code>$list = array('faa', 'foo', 'foobar');
	 *          => string 'f(aa|oo(bar)?)'</code>
	 * @param $list             array of (unquoted) strings
	 * @param $regexp_delimiter your regular expression delimiter, @see preg_quote()
	 * @return string for regular expression
	 * @author Milian Wolff <mail@milianw.de>
	 * @since  1.0.8
	 * @access private
	 */
	function optimize_regexp_list($list, $regexp_delimiter = '/') {
		$regex_chars = array('.', '\\', '+', '-', '*', '?', '[', '^', ']', '$', '(', ')', '{', '}', '=', '!', '<', '>',
							 '|', ':', $regexp_delimiter);
		sort($list);
		$regexp_list = array('');
		$num_subpatterns = 0;
		$list_key = 0;
		// the tokens which we will use to generate the regexp list
		$tokens = array();
		$prev_keys = array();
		// go through all entries of the list and generate the token list
		$cur_len = 0;
		for ($i = 0, $i_max = count($list); $i < $i_max; ++$i) {
			if ($cur_len > GESHI_MAX_PCRE_LENGTH) {
				// seems like the length of this pcre is growing exorbitantly
				$regexp_list[++$list_key] = $this->_optimize_regexp_list_tokens_to_string($tokens);
				$num_subpatterns = substr_count($regexp_list[$list_key], '(?:');
				$tokens = array();
				$cur_len = 0;
			}
			$level = 0;
			$entry = preg_quote((string)$list[$i], $regexp_delimiter);
			$pointer = & $tokens;
			// properly assign the new entry to the correct position in the token array
			// possibly generate smaller common denominator keys
			while (TRUE) {
				// get the common denominator
				if (isset($prev_keys[$level])) {
					if ($prev_keys[$level] == $entry) {
						// this is a duplicate entry, skip it
						continue 2;
					}
					$char = 0;
					while (isset($entry[$char]) && isset($prev_keys[$level][$char]) && $entry[$char] == $prev_keys[$level][$char]) {
						++$char;
					}
					if ($char > 0) {
						// this entry has at least some chars in common with the current key
						if ($char == strlen($prev_keys[$level])) {
							// current key is totally matched, i.e. this entry has just some bits appended
							$pointer = & $pointer[$prev_keys[$level]];
						} else {
							// only part of the keys match
							$new_key_part1 = substr($prev_keys[$level], 0, $char);
							$new_key_part2 = substr($prev_keys[$level], $char);
							if (in_array($new_key_part1[0], $regex_chars) || in_array($new_key_part2[0], $regex_chars)) {
								// this is bad, a regex char as first character
								$pointer[$entry] = array('' => TRUE);
								array_splice($prev_keys, $level, count($prev_keys), $entry);
								$cur_len += strlen($entry);
								continue;
							} else {
								// relocate previous tokens
								$pointer[$new_key_part1] = array($new_key_part2 => $pointer[$prev_keys[$level]]);
								unset($pointer[$prev_keys[$level]]);
								$pointer = & $pointer[$new_key_part1];
								// recreate key index
								array_splice($prev_keys, $level, count($prev_keys), array($new_key_part1,
																						  $new_key_part2));
								$cur_len += strlen($new_key_part2);
							}
						}
						++$level;
						$entry = substr($entry, $char);
						continue;
					}
					// else: fall trough, i.e. no common denominator was found
				}
				if ($level == 0 && !empty($tokens)) {
					// we can dump current tokens into the string and throw them away afterwards
					$new_entry = $this->_optimize_regexp_list_tokens_to_string($tokens);
					$new_subpatterns = substr_count($new_entry, '(?:');
					if (GESHI_MAX_PCRE_SUBPATTERNS && $num_subpatterns+$new_subpatterns > GESHI_MAX_PCRE_SUBPATTERNS) {
						$regexp_list[++$list_key] = $new_entry;
						$num_subpatterns = $new_subpatterns;
					} else {
						if (!empty($regexp_list[$list_key])) {
							$new_entry = '|'.$new_entry;
						}
						$regexp_list[$list_key] .= $new_entry;
						$num_subpatterns += $new_subpatterns;
					}
					$tokens = array();
					$cur_len = 0;
				}
				// no further common denominator found
				$pointer[$entry] = array('' => TRUE);
				array_splice($prev_keys, $level, count($prev_keys), $entry);
				$cur_len += strlen($entry);
				break;
			}
			unset($list[$i]);
		}
		// make sure the last tokens get converted as well
		$new_entry = $this->_optimize_regexp_list_tokens_to_string($tokens);
		if (GESHI_MAX_PCRE_SUBPATTERNS && $num_subpatterns+substr_count($new_entry, '(?:') > GESHI_MAX_PCRE_SUBPATTERNS) {
			if (!empty($regexp_list[$list_key])) {
				++$list_key;
			}
			$regexp_list[$list_key] = $new_entry;
		} else {
			if (!empty($regexp_list[$list_key])) {
				$new_entry = '|'.$new_entry;
			}
			$regexp_list[$list_key] .= $new_entry;
		}
		return $regexp_list;
	}

	/**
	 * this function creates the appropriate regexp string of an token array
	 * you should not call this function directly, @see $this->optimize_regexp_list().
	 * @param &$tokens  array of tokens
	 * @param $recursed bool to know wether we recursed or not
	 * @return string
	 * @author Milian Wolff <mail@milianw.de>
	 * @since  1.0.8
	 * @access private
	 */
	function _optimize_regexp_list_tokens_to_string(&$tokens, $recursed = FALSE) {
		$list = '';
		foreach ($tokens as $token => $sub_tokens) {
			$list .= $token;
			$close_entry = isset($sub_tokens['']);
			unset($sub_tokens['']);
			if (!empty($sub_tokens)) {
				$list .= '(?:'.$this->_optimize_regexp_list_tokens_to_string($sub_tokens, TRUE).')';
				if ($close_entry) {
					// make sub_tokens optional
					$list .= '?';
				}
			}
			$list .= '|';
		}
		if (!$recursed) {
			// do some optimizations
			// common trailing strings
			// BUGGY!
			//$list = preg_replace_callback('#(?<=^|\:|\|)\w+?(\w+)(?:\|.+\1)+(?=\|)#', create_function(
			//    '$matches', 'return "(?:" . preg_replace("#" . preg_quote($matches[1], "#") . "(?=\||$)#", "", $matches[0]) . ")" . $matches[1];'), $list);
			// (?:p)? => p?
			$list = preg_replace('#\(\?\:(.)\)\?#', '\1?', $list);
			// (?:a|b|c|d|...)? => [abcd...]?
			// TODO: a|bb|c => [ac]|bb
			static $callback_2;
			if (!isset($callback_2)) {
				$callback_2 = create_function('$matches', 'return "[" . str_replace("|", "", $matches[1]) . "]";');
			}
			$list = preg_replace_callback('#\(\?\:((?:.\|)+.)\)#', $callback_2, $list);
		}
		// return $list without trailing pipe
		return substr($list, 0, -1);
	}
} // End Class GeSHi
if (!function_exists('geshi_highlight')) {
	/**
	 * Easy way to highlight stuff. Behaves just like highlight_string
	 * @param string  The code to highlight
	 * @param string  The language to highlight the code in
	 * @param string  The path to the language files. You can leave this blank if you need
	 *                as from version 1.0.7 the path should be automatically detected
	 * @param boolean Whether to return the result or to echo
	 * @return string The code highlighted (if $return is true)
	 * @since 1.0.2
	 */
	function geshi_highlight($string, $language, $path = NULL, $return = FALSE) {
		$geshi = new GeSHi($string, $language, $path);
		$geshi->set_header_type(GESHI_HEADER_NONE);
		if ($return) {
			return '<code>'.$geshi->parse_code().'</code>';
		}
		echo '<code>'.$geshi->parse_code().'</code>';
		if ($geshi->error()) {
			return FALSE;
		}
		return TRUE;
	}
}

?>