Extends the CI Parser class to allow for language files to be parsed. With this instead of using <?php echo $this->lang->line('lineoftext'); ?> You can now use an underscore in your view files like so: {_lineoftext}. Enjoy cleaner view files!

MY_Parser.php

<?php
/*
******************************************************************************
// Extends the CI Parser class to allow for language files to be parsed.
// With this instead of using <?php echo $this->lang->line('lineoftext'); ?>
// You can now use an underscore in your view files like so: {_lineoftext} 
// Enjoy cleaner view files!

// Place this file in application/libraries/MY_Parser.php
******************************************************************************
*/

class MY_Parser extends CI_Parser {

    const LANG_REPLACE_REGEXP = '!\{_\s*(?<key>[^\}]+)\}!';
    static $CI = null;

    public function parse($template, $data, $return = FALSE) {
        $this->CI = get_instance();
        $template = $this->CI->load->view($template, $data, TRUE);
        $template = $this->replace_lang_keys($template);

        return $this->_parse($template, $data, $return);
    }

    protected function replace_lang_keys($template) {
        return preg_replace_callback(self::LANG_REPLACE_REGEXP, array($this, 'replace_lang_key'), $template);
    }

    protected function replace_lang_key($key) {
        return $this->CI->lang->line($key[1]);
    }
}