Markdown_Parser::detab PHP Method

    function detab($text)
    {
        #
        # Replace tabs with the appropriate amount of space.
        #
        # For each line we separate the line in blocks delemited by
        # tab characters. Then we reconstruct every line by adding the
        # appropriate number of space between each blocks.
        $text = preg_replace_callback('/^.*\\t.*$/m', array(&$this, '_detab_callback'), $text);
        return $text;
    }