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function acronym_pass($message)
{
	static $orig, $repl;

	if( !isset($orig) )
	{
		global $db, $board_config;
		$orig = $repl = array();

		$sql = 'SELECT * FROM ' . ACRONYMS_TABLE;
		if( !$result = $db->sql_query($sql) )
		{
			message_die(GENERAL_ERROR, "Couldn't obtain acronyms data", "", __LINE__, __FILE__, $sql);
		}
		
		$acronyms = $db->sql_fetchrowset($result);

		if( count($acronyms) )
		{
			usort( $acronyms, 'acronym_sort' );
		}

		for ($i = 0; $i < count($acronyms); $i++)
		{
			$orig[] = '#\b(' . phpbb_preg_quote( $acronyms[$i]['acronym'], "/") . ')\b#';
			$repl[] = '<acronym title="' . $acronyms[$i]['description'] . '">' . $acronyms[$i]['acronym'] . '</acronym>'; ;
		}
	}
	
	if( count( $orig ) )
	{
		$segments = preg_split( '#(<acronym.+?>.+?</acronym>|<.+?>)#s' , $message, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);

		$message = '';

		foreach( $segments as $seg )
		{
			if( $seg[0] != '<' && $seg[0] != '[' )
			{
				$message .= str_replace('\"', '"', substr(preg_replace('#(\>(((?>([^><]+|(?R)))*)\<))#se', "preg_replace(\$orig, \$repl, '\\0')", '>' . $seg . '<'), 1, -1));
			}
			else
			{
				$message .= $seg;
			}
		}
	}
	
	return $message;
}