<?php
/**
 * Comment template functions
 *
 * These functions are meant to live inside of the WordPress loop.
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * Retrieve the author of the current comment.
 *
 * If the comment has an empty comment_author field, then 'Anonymous' person is
 * assumed.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to retrieve the author. Default current comment.
 * @return string The comment author
 */
function get_comment_author( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );

    if ( empty( $comment->comment_author ) ) {
        if ( $comment->user_id && $user = get_userdata( $comment->user_id ) )
            $author = $user->display_name;
        else
            $author = __('Anonymous');
    } else {
        $author = $comment->comment_author;
    }

    /**
     * Filter the returned comment author name.
     *
     * @since 1.5.0
     *
     * @param string $author The comment author's username.
     */
    return apply_filters( 'get_comment_author', $author );
}

/**
 * Displays the author of the current comment.
 *
 * @since 0.71
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the author. Default current comment.
 */
function comment_author( $comment_ID = 0 ) {
    $author = get_comment_author( $comment_ID );
    /**
     * Filter the comment author's name for display.
     *
     * @since 1.2.0
     *
     * @param string $author The comment author's username.
     */
    $author = apply_filters( 'comment_author', $author );
    echo $author;
}

/**
 * Retrieve the email of the author of the current comment.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the author's email. Default current comment.
 * @return string The current comment author's email
 */
function get_comment_author_email( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );
    /**
     * Filter the comment author's returned email address.
     *
     * @since 1.5.0
     *
     * @param string $comment->comment_author_email The comment author's email address.
     */
    return apply_filters( 'get_comment_author_email', $comment->comment_author_email );
}

/**
 * Display the email of the author of the current global $comment.
 *
 * Care should be taken to protect the email address and assure that email
 * harvesters do not capture your commentors' email address. Most assume that
 * their email address will not appear in raw form on the blog. Doing so will
 * enable anyone, including those that people don't want to get the email
 * address and use it for their own means good and bad.
 *
 * @since 0.71
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the author's email. Default current comment.
 */
function comment_author_email( $comment_ID = 0 ) {
    $author_email = get_comment_author_email( $comment_ID );
    /**
     * Filter the comment author's email for display.
     *
     * @since 1.2.0
     *
     * @param string $author_email The comment author's email address.
     */
    echo apply_filters( 'author_email', $author_email );
}

/**
 * Display the html email link to the author of the current comment.
 *
 * Care should be taken to protect the email address and assure that email
 * harvesters do not capture your commentors' email address. Most assume that
 * their email address will not appear in raw form on the blog. Doing so will
 * enable anyone, including those that people don't want to get the email
 * address and use it for their own means good and bad.
 *
 * @global object $comment The current Comment row object

 * @since 0.71
 *
 * @param string $linktext Optional. The text to display instead of the comment author's email address. Default empty.
 * @param string $before   Optional. The text or HTML to display before the email link.Default empty.
 * @param string $after    Optional. The text or HTML to display after the email link. Default empty.
 */
function comment_author_email_link( $linktext = '', $before = '', $after = '' ) {
    if ( $link = get_comment_author_email_link( $linktext, $before, $after ) )
        echo $link;
}

/**
 * Return the html email link to the author of the current comment.
 *
 * Care should be taken to protect the email address and assure that email
 * harvesters do not capture your commentors' email address. Most assume that
 * their email address will not appear in raw form on the blog. Doing so will
 * enable anyone, including those that people don't want to get the email
 * address and use it for their own means good and bad.
 *
 * @global object $comment The current Comment row object.
 *
 * @since 2.7
 *
 * @param string $linktext Optional. The text to display instead of the comment author's email address. Default empty.
 * @param string $before   Optional. The text or HTML to display before the email link. Default empty.
 * @param string $after    Optional. The text or HTML to display after the email link. Default empty.
 */
function get_comment_author_email_link( $linktext = '', $before = '', $after = '' ) {
    global $comment;
    /**
     * Filter the comment author's email for display.
     *
     * Care should be taken to protect the email address and assure that email
     * harvesters do not capture your commentors' email address.
     *
     * @since 1.2.0
     *
     * @param string $comment->comment_author_email The comment author's email address.
     */
    $email = apply_filters( 'comment_email', $comment->comment_author_email );
    if ((!empty($email)) && ($email != '@')) {
    $display = ($linktext != '') ? $linktext : $email;
        $return  = $before;
        $return .= "<a href='mailto:$email'>$display</a>";
        $return .= $after;
        return $return;
    } else {
        return '';
    }
}

/**
 * Retrieve the HTML link to the URL of the author of the current comment.
 *
 * Both get_comment_author_url() and get_comment_author() rely on get_comment(),
 * which falls back to the global comment variable if the $comment_ID argument is empty.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the author's link. Default current comment.
 * @return string The comment author name or HTML link for author's URL.
 */
function get_comment_author_link( $comment_ID = 0 ) {
    $url    = get_comment_author_url( $comment_ID );
    $author = get_comment_author( $comment_ID );

    if ( empty( $url ) || 'http://' == $url )
        $return = $author;
    else
        $return = "<a href='$url' rel='external nofollow' class='url'>$author</a>";

    /**
     * Filter the comment author's link for display.
     *
     * @since 1.5.0
     *
     * @param string $return The HTML-formatted comment author link. Empty for an invalid URL.
     */
    return apply_filters( 'get_comment_author_link', $return );
}

/**
 * Display the html link to the url of the author of the current comment.
 *
 * @since 0.71
 * @see get_comment_author_link() Echoes result
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the author's link. Default current comment.
 */
function comment_author_link( $comment_ID = 0 ) {
    echo get_comment_author_link( $comment_ID );
}

/**
 * Retrieve the IP address of the author of the current comment.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the author's IP address. Default current comment.
 * @return string The comment author's IP address.
 */
function get_comment_author_IP( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );

    /**
     * Filter the comment author's returned IP address.
     *
     * @since 1.5.0
     *
     * @param string $comment->comment_author_IP The comment author's IP address.
     */
    return apply_filters( 'get_comment_author_IP', $comment->comment_author_IP );
}

/**
 * Display the IP address of the author of the current comment.
 *
 * @since 0.71
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the author's IP address. Default current comment.
 */
function comment_author_IP( $comment_ID = 0 ) {
    echo get_comment_author_IP( $comment_ID );
}

/**
 * Retrieve the url of the author of the current comment.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the author's URL. Default current comment.
 * @return string
 */
function get_comment_author_url( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );
    $url = ('http://' == $comment->comment_author_url) ? '' : $comment->comment_author_url;
    $url = esc_url( $url, array('http', 'https') );
    /**
     * Filter the comment author's URL.
     *
     * @since 1.5.0
     *
     * @param string $url The comment author's URL.
     */
    return apply_filters( 'get_comment_author_url', $url );
}

/**
 * Display the url of the author of the current comment.
 *
 * @since 0.71
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the author's URL. Default current comment.
 */
function comment_author_url( $comment_ID = 0 ) {
    $author_url = get_comment_author_url( $comment_ID );
    /**
     * Filter the comment author's URL for display.
     *
     * @since 1.2.0
     *
     * @param string $author_url The comment author's URL.
     */
    echo apply_filters( 'comment_url', $author_url );
}

/**
 * Retrieves the HTML link of the url of the author of the current comment.
 *
 * $linktext parameter is only used if the URL does not exist for the comment
 * author. If the URL does exist then the URL will be used and the $linktext
 * will be ignored.
 *
 * Encapsulate the HTML link between the $before and $after. So it will appear
 * in the order of $before, link, and finally $after.
 *
 * @since 1.5.0
 *
 * @param string $linktext Optional. The text to display instead of the comment author's email address. Default empty.
 * @param string $before   Optional. The text or HTML to display before the email link. Default empty.
 * @param string $after    Optional. The text or HTML to display after the email link. Default empty.
 * @return string The HTML link between the $before and $after parameters.
 */
function get_comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
    $url = get_comment_author_url();
    $display = ($linktext != '') ? $linktext : $url;
    $display = str_replace( 'http://www.', '', $display );
    $display = str_replace( 'http://', '', $display );
    if ( '/' == substr($display, -1) )
        $display = substr($display, 0, -1);
    $return = "$before<a href='$url' rel='external'>$display</a>$after";

    /**
     * Filter the comment author's returned URL link.
     *
     * @since 1.5.0
     *
     * @param string $return The HTML-formatted comment author URL link.
     */
    return apply_filters( 'get_comment_author_url_link', $return );
}

/**
 * Displays the HTML link of the url of the author of the current comment.
 *
 * @since 0.71
 *
 * @param string $linktext Optional. The text to display instead of the comment author's email address. Default empty.
 * @param string $before   Optional. The text or HTML to display before the email link. Default empty.
 * @param string $after    Optional. The text or HTML to display after the email link. Default empty.
 */
function comment_author_url_link( $linktext = '', $before = '', $after = '' ) {
    echo get_comment_author_url_link( $linktext, $before, $after );
}

/**
 * Generates semantic classes for each comment element
 *
 * @since 2.7.0
 *
 * @param string|array $class      Optional. One or more classes to add to the class list. Default empty.
 * @param int          $comment_id Optional. Comment ID. Default current comment.
 * @param int|WP_Post  $post_id    Optional. Post ID or WP_Post object. Default current post.
 * @param bool         $echo       Optional. Whether comment_class should echo or return. Default true.
 */
function comment_class( $class = '', $comment_id = null, $post_id = null, $echo = true ) {
    // Separates classes with a single space, collates classes for comment DIV
    $class = 'class="' . join( ' ', get_comment_class( $class, $comment_id, $post_id ) ) . '"';
    if ( $echo)
        echo $class;
    else
        return $class;
}

/**
 * Returns the classes for the comment div as an array
 *
 * @since 2.7.0
 *
 * @param string|array $class      Optional. One or more classes to add to the class list. Default empty.
 * @param int          $comment_id Optional. Comment ID. Default current comment.
 * @param int|WP_Post  $post_id    Optional. Post ID or WP_Post object. Default current post.
 * @return array An array of classes.
 */
function get_comment_class( $class = '', $comment_id = null, $post_id = null ) {
    global $comment_alt, $comment_depth, $comment_thread_alt;

    $comment = get_comment($comment_id);

    $classes = array();

    // Get the comment type (comment, trackback),
    $classes[] = ( empty( $comment->comment_type ) ) ? 'comment' : $comment->comment_type;

    // If the comment author has an id (registered), then print the log in name
    if ( $comment->user_id > 0 && $user = get_userdata($comment->user_id) ) {
        // For all registered users, 'byuser'
        $classes[] = 'byuser';
        $classes[] = 'comment-author-' . sanitize_html_class($user->user_nicename, $comment->user_id);
        // For comment authors who are the author of the post
        if ( $post = get_post($post_id) ) {
            if ( $comment->user_id === $post->post_author )
                $classes[] = 'bypostauthor';
        }
    }

    if ( empty($comment_alt) )
        $comment_alt = 0;
    if ( empty($comment_depth) )
        $comment_depth = 1;
    if ( empty($comment_thread_alt) )
        $comment_thread_alt = 0;

    if ( $comment_alt % 2 ) {
        $classes[] = 'odd';
        $classes[] = 'alt';
    } else {
        $classes[] = 'even';
    }

    $comment_alt++;

    // Alt for top-level comments
    if ( 1 == $comment_depth ) {
        if ( $comment_thread_alt % 2 ) {
            $classes[] = 'thread-odd';
            $classes[] = 'thread-alt';
        } else {
            $classes[] = 'thread-even';
        }
        $comment_thread_alt++;
    }

    $classes[] = "depth-$comment_depth";

    if ( !empty($class) ) {
        if ( !is_array( $class ) )
            $class = preg_split('#\s+#', $class);
        $classes = array_merge($classes, $class);
    }

    $classes = array_map('esc_attr', $classes);

    /**
     * Filter the returned CSS classes for the current comment.
     *
     * @since 2.7.0
     *
     * @param array       $classes    An array of comment classes.
     * @param string      $class      A comma-separated list of additional classes added to the list.
     * @param int         $comment_id The comment id.
     * @param int|WP_Post $post_id    The post ID or WP_Post object.
     */
    return apply_filters( 'comment_class', $classes, $class, $comment_id, $post_id );
}

/**
 * Retrieve the comment date of the current comment.
 *
 * @since 1.5.0
 *
 * @param string $d          Optional. The format of the date. Default user's setting.
 * @param int    $comment_ID Optional. The ID of the comment for which to get the date. Default current comment.
 * @return string The comment's date.
 */
function get_comment_date( $d = '', $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );
    if ( '' == $d )
        $date = mysql2date(get_option('date_format'), $comment->comment_date);
    else
        $date = mysql2date($d, $comment->comment_date);
    /**
     * Filter the returned comment date.
     *
     * @since 1.5.0
     *
     * @param string|int $date Formatted date string or Unix timestamp.
     * @param string     $d    The format of the date.
     */
    return apply_filters( 'get_comment_date', $date, $d );
}

/**
 * Display the comment date of the current comment.
 *
 * @since 0.71
 *
 * @param string $d          Optional. The format of the date. Default user's settings.
 * @param int    $comment_ID Optional. The ID of the comment for which to print the date. Default current comment.
 */
function comment_date( $d = '', $comment_ID = 0 ) {
    echo get_comment_date( $d, $comment_ID );
}

/**
 * Retrieve the excerpt of the current comment.
 *
 * Will cut each word and only output the first 20 words with '&hellip;' at the end.
 * If the word count is less than 20, then no truncating is done and no '&hellip;'
 * will appear.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the excerpt. Default current comment.
 * @return string The maybe truncated comment with 20 words or less.
 */
function get_comment_excerpt( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );
    $comment_text = strip_tags($comment->comment_content);
    $blah = explode(' ', $comment_text);
    if (count($blah) > 20) {
        $k = 20;
        $use_dotdotdot = 1;
    } else {
        $k = count($blah);
        $use_dotdotdot = 0;
    }
    $excerpt = '';
    for ($i=0; $i<$k; $i++) {
        $excerpt .= $blah[$i] . ' ';
    }
    $excerpt .= ($use_dotdotdot) ? '&hellip;' : '';
    return apply_filters('get_comment_excerpt', $excerpt);
}

/**
 * Display the excerpt of the current comment.
 *
 * @since 1.2.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to print the excerpt. Default current comment.
 */
function comment_excerpt( $comment_ID = 0 ) {
    $comment_excerpt = get_comment_excerpt($comment_ID);
    /**
     * Filter the comment excerpt for display.
     *
     * @since 1.2.0
     *
     * @param string $comment_excerpt The comment excerpt text.
     */
    echo apply_filters( 'comment_excerpt', $comment_excerpt );
}

/**
 * Retrieve the comment id of the current comment.
 *
 * @since 1.5.0
 *
 * @return int The comment ID.
 */
function get_comment_ID() {
    global $comment;
    /**
     * Filter the returned comment ID.
     *
     * @since 1.5.0
     *
     * @param int $comment->comment_ID The current comment ID.
     */
    return apply_filters( 'get_comment_ID', $comment->comment_ID );
}

/**
 * Display the comment id of the current comment.
 *
 * @since 0.71
 */
function comment_ID() {
    echo get_comment_ID();
}

/**
 * Retrieve the link to a given comment.
 *
 * @since 1.5.0
 *
 * @param mixed $comment Optional. Comment to retrieve. Default current comment.
 * @param array $args    Optional. An array of arguments to override the defaults. @see get_page_of_comment()
 * @return string The permalink to the given comment.
 */
function get_comment_link( $comment = null, $args = array() ) {
    global $wp_rewrite, $in_comment_loop;

    $comment = get_comment($comment);

    // Backwards compat
    if ( !is_array($args) ) {
        $page = $args;
        $args = array();
        $args['page'] = $page;
    }

    $defaults = array( 'type' => 'all', 'page' => '', 'per_page' => '', 'max_depth' => '' );
    $args = wp_parse_args( $args, $defaults );

    if ( '' === $args['per_page'] && get_option('page_comments') )
        $args['per_page'] = get_option('comments_per_page');

    if ( empty($args['per_page']) ) {
        $args['per_page'] = 0;
        $args['page'] = 0;
    }

    if ( $args['per_page'] ) {
        if ( '' == $args['page'] )
            $args['page'] = ( !empty($in_comment_loop) ) ? get_query_var('cpage') : get_page_of_comment( $comment->comment_ID, $args );

        if ( $wp_rewrite->using_permalinks() )
            $link = user_trailingslashit( trailingslashit( get_permalink( $comment->comment_post_ID ) ) . 'comment-page-' . $args['page'], 'comment' );
        else
            $link = add_query_arg( 'cpage', $args['page'], get_permalink( $comment->comment_post_ID ) );
    } else {
        $link = get_permalink( $comment->comment_post_ID );
    }

    $link = $link . '#comment-' . $comment->comment_ID;
    /**
     * Filter the returned single comment permalink.
     *
     * @since 2.8.0
     *
     * @param string $link    The comment permalink with '#comment-$id' appended.
     * @param object $comment The current comment object.
     * @param array  $args    An array of arguments to override the defaults. @see get_page_of_comment()
     */
    return apply_filters( 'get_comment_link', $link, $comment, $args );
}

/**
 * Retrieve the link to the current post comments.
 *
 * @since 1.5.0
 *
 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default current post.
 * @return string The link to the comments.
 */
function get_comments_link( $post_id = 0 ) {
    $comments_link = get_permalink( $post_id ) . '#comments';
    /**
     * Filter the returned post comments permalink.
     *
     * @since
     *
     * @param string      $comments_link The post comments permalink with '#comments' appended.
     * @param int|WP_Post $post_id       The post ID or WP_Post object.
     */
    return apply_filters( 'get_comments_link', $comments_link, $post_id );
}

/**
 * Display the link to the current post comments.
 *
 * @since 0.71
 *
 * @param string $deprecated   Not Used.
 * @param bool   $deprecated_2 Not Used.
 */
function comments_link( $deprecated = '', $deprecated_2 = '' ) {
    if ( !empty( $deprecated ) )
        _deprecated_argument( __FUNCTION__, '0.72' );
    if ( !empty( $deprecated_2 ) )
        _deprecated_argument( __FUNCTION__, '1.3' );
    echo esc_url( get_comments_link() );
}

/**
 * Retrieve the amount of comments a post has.
 *
 * @since 1.5.0
 *
 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default current post.
 * @return int The number of comments a post has.
 */
function get_comments_number( $post_id = 0 ) {
    $post_id = absint( $post_id );

    if ( !$post_id )
        $post_id = get_the_ID();

    $post = get_post($post_id);
    if ( ! isset($post->comment_count) )
        $count = 0;
    else
        $count = $post->comment_count;

    /**
     * Filter the returned comment count for a post.
     *
     * @since 1.5.0
     *
     * @param int         $count   The number of comments a post has.
     * @param int|WP_Post $post_id The post ID or WP_Post object.
     */
    return apply_filters( 'get_comments_number', $count, $post_id );
}

/**
 * Display the language string for the number of comments the current post has.
 *
 * @since 0.71
 *
 * @param string $zero       Optional. Text for no comments. Default false.
 * @param string $one        Optional. Text for one comment. Default false.
 * @param string $more       Optional. Text for more than one comment. Default false.
 * @param string $deprecated Not used.
 */
function comments_number( $zero = false, $one = false, $more = false, $deprecated = '' ) {
    if ( !empty( $deprecated ) )
        _deprecated_argument( __FUNCTION__, '1.3' );

    $number = get_comments_number();

    if ( $number > 1 )
        $output = str_replace('%', number_format_i18n($number), ( false === $more ) ? __('% Comments') : $more);
    elseif ( $number == 0 )
        $output = ( false === $zero ) ? __('No Comments') : $zero;
    else // must be one
        $output = ( false === $one ) ? __('1 Comment') : $one;

    /**
     * Filter the comments count for display.
     *
     * @since 1.5.0
     *
     * @param string $output A translatable string formatted based on whether the count is equal to 0, 1, or 1+. @see _n()
     * @param int    $number The number of post comments.
     */
    echo apply_filters( 'comments_number', $output, $number );
}

/**
 * Retrieve the text of the current comment.
 *
 * @since 1.5.0
 *
 * @param int   $comment_ID Optional. The ID of the comment for which to get the text. Default current comment.
 * @param array $args       Optional. An array of arguments. @see Walker_Comment::comment()
 * @return string The comment content.
 */
function get_comment_text( $comment_ID = 0, $args = array() ) {
    $comment = get_comment( $comment_ID );

    /**
     * Filter the text of a comment.
     *
     * @since 1.5.0
     *
     * @param string $comment->comment_content The text of the comment.
     * @param object $comment                  The comment object.
     * @param array  $args                     An array of arguments. @see Walker_Comment::comment()
     */
    return apply_filters( 'get_comment_text', $comment->comment_content, $comment, $args );
}

/**
 * Display the text of the current comment.
 *
 * @since 0.71
 *
 * @param int   $comment_ID Optional. The ID of the comment for which to print the text.
 *                          Default 0.
 * @param array $args       Optional. An array of arguments. @see Walker_Comment::comment()
 *                          Default empty array.
 */
function comment_text( $comment_ID = 0, $args = array() ) {
    $comment = get_comment( $comment_ID );

    $comment_text = get_comment_text( $comment_ID , $args );
    /**
     * Filter the text of a comment to be displayed.
     *
     * @since 1.2.0
     *
     * @param string $comment_text The text of the current comment.
     * @param object $comment      The comment object.
     * @param array  $args         An array of arguments. @see Walker_Comment::comment()
     */
    echo apply_filters( 'comment_text', $comment_text, $comment, $args );
}

/**
 * Retrieve the comment time of the current comment.
 *
 * @since 1.5.0
 *
 * @param string $d         Optional. The format of the time. Default user's settings.
 * @param bool   $gmt       Optional. Whether to use the GMT date. Default false.
 * @param bool   $translate Optional. Whether to translate the time (for use in feeds). Default true.
 * @return string The formatted time
 */
function get_comment_time( $d = '', $gmt = false, $translate = true ) {
    global $comment;
    $comment_date = $gmt ? $comment->comment_date_gmt : $comment->comment_date;
    if ( '' == $d )
        $date = mysql2date(get_option('time_format'), $comment_date, $translate);
    else
        $date = mysql2date($d, $comment_date, $translate);

    /**
     * Filter the returned comment time.
     *
     * @since 1.5.0
     *
     * @param string|int $date      The comment time, formatted as a date string or Unix timestamp.
     * @param string     $d         The date format.
     * @param bool       $gmt       Whether the GMT date is in use.
     * @param bool       $translate Whether the time is translated.
     */
    return apply_filters( 'get_comment_time', $date, $d, $gmt, $translate );
}

/**
 * Display the comment time of the current comment.
 *
 * @since 0.71
 *
 * @param string $d Optional. The format of the time. Default user's settings.
 */
function comment_time( $d = '' ) {
    echo get_comment_time($d);
}

/**
 * Retrieve the comment type of the current comment.
 *
 * @since 1.5.0
 *
 * @param int $comment_ID Optional. The ID of the comment for which to get the type. Default current comment.
 * @return string The comment type
 */
function get_comment_type( $comment_ID = 0 ) {
    $comment = get_comment( $comment_ID );
    if ( '' == $comment->comment_type )
        $comment->comment_type = 'comment';

    /**
     * Filter the returned comment type.
     *
     * @since 1.5.0
     *
     * @param string $comment->comment_type The type of comment, such as 'comment', 'pingback', or 'trackback'.
     */
    return apply_filters( 'get_comment_type', $comment->comment_type );
}

/**
 * Display the comment type of the current comment.
 *
 * @since 0.71
 *
 * @param string $commenttxt   Optional. The string to display for comment type. Default false.
 * @param string $trackbacktxt Optional. The string to display for trackback type. Default false.
 * @param string $pingbacktxt  Optional. The string to display for pingback type. Default false.
 */
function comment_type( $commenttxt = false, $trackbacktxt = false, $pingbacktxt = false ) {
    if ( false === $commenttxt ) $commenttxt = _x( 'Comment', 'noun' );
    if ( false === $trackbacktxt ) $trackbacktxt = __( 'Trackback' );
    if ( false === $pingbacktxt ) $pingbacktxt = __( 'Pingback' );
    $type = get_comment_type();
    switch( $type ) {
        case 'trackback' :
            echo $trackbacktxt;
            break;
        case 'pingback' :
            echo $pingbacktxt;
            break;
        default :
            echo $commenttxt;
    }
}

/**
 * Retrieve The current post's trackback URL.
 *
 * There is a check to see if permalink's have been enabled and if so, will
 * retrieve the pretty path. If permalinks weren't enabled, the ID of the
 * current post is used and appended to the correct page to go to.
 *
 * @since 1.5.0
 *
 * @return string The trackback URL after being filtered.
 */
function get_trackback_url() {
    if ( '' != get_option('permalink_structure') )
        $tb_url = trailingslashit(get_permalink()) . user_trailingslashit('trackback', 'single_trackback');
    else
        $tb_url = get_option('siteurl') . '/wp-trackback.php?p=' . get_the_ID();

    /**
     * Filter the returned trackback URL.
     *
     * @since 2.2.0
     *
     * @param string $tb_url The trackback URL.
     */
    return apply_filters( 'trackback_url', $tb_url );
}

/**
 * Display the current post's trackback URL.
 *
 * @since 0.71
 *
 * @param bool $deprecated_echo Not used.
 * @return void|string Should only be used to echo the trackback URL, use get_trackback_url() for the result instead.
 */
function trackback_url( $deprecated_echo = true ) {
    if ( $deprecated_echo !== true )
        _deprecated_argument( __FUNCTION__, '2.5', __('Use <code>get_trackback_url()</code> instead if you do not want the value echoed.') );
    if ( $deprecated_echo )
        echo get_trackback_url();
    else
        return get_trackback_url();
}

/**
 * Generate and display the RDF for the trackback information of current post.
 *
 * Deprecated in 3.0.0, and restored in 3.0.1.
 *
 * @since 0.71
 *
 * @param int $deprecated Not used (Was $timezone = 0).
 */
function trackback_rdf( $deprecated = '' ) {
    if ( !empty( $deprecated ) )
        _deprecated_argument( __FUNCTION__, '2.5' );

    if ( false !== stripos($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator') )
        return;

    echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
            xmlns:dc="http://purl.org/dc/elements/1.1/"
            xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
        <rdf:Description rdf:about="';
    the_permalink();
    echo '"'."\n";
    echo '    dc:identifier="';
    the_permalink();
    echo '"'."\n";
    echo '    dc:title="'.str_replace('--', '&#x2d;&#x2d;', wptexturize(strip_tags(get_the_title()))).'"'."\n";
    echo '    trackback:ping="'.get_trackback_url().'"'." />\n";
    echo '</rdf:RDF>';
}

/**
 * Whether the current post is open for comments.
 *
 * @since 1.5.0
 *
 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default current post.
 * @return bool True if the comments are open.
 */
function comments_open( $post_id = null ) {

    $_post = get_post($post_id);

    $open = ( 'open' == $_post->comment_status );

    /**
     * Filter whether the current post is open for comments.
     *
     * @since
     *
     * @param bool        $open    Whether the current post is open for comments.
     * @param int|WP_Post $post_id The post ID or WP_Post object.
     */
    return apply_filters( 'comments_open', $open, $post_id );
}

/**
 * Whether the current post is open for pings.
 *
 * @since 1.5.0
 *
 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default current post.
 * @return bool True if pings are accepted
 */
function pings_open( $post_id = null ) {

    $_post = get_post($post_id);

    $open = ( 'open' == $_post->ping_status );
    return apply_filters( 'pings_open', $open, $post_id );
}

/**
 * Display form token for unfiltered comments.
 *
 * Will only display nonce token if the current user has permissions for
 * unfiltered html. Won't display the token for other users.
 *
 * The function was backported to 2.0.10 and was added to versions 2.1.3 and
 * above. Does not exist in versions prior to 2.0.10 in the 2.0 branch and in
 * the 2.1 branch, prior to 2.1.3. Technically added in 2.2.0.
 *
 * Backported to 2.0.10.
 *
 * @since 2.1.3
 */
function wp_comment_form_unfiltered_html_nonce() {
    $post = get_post();
    $post_id = $post ? $post->ID : 0;

    if ( current_user_can( 'unfiltered_html' ) ) {
        wp_nonce_field( 'unfiltered-html-comment_' . $post_id, '_wp_unfiltered_html_comment_disabled', false );
        echo "<script>(function(){if(window===window.parent){document.getElementById('_wp_unfiltered_html_comment_disabled').name='_wp_unfiltered_html_comment';}})();</script>\n";
    }
}

/**
 * Load the comment template specified in $file.
 *
 * Will not display the comments template if not on single post or page, or if
 * the post does not have comments.
 *
 * Uses the WordPress database object to query for the comments. The comments
 * are passed through the 'comments_array' filter hook with the list of comments
 * and the post ID respectively.
 *
 * The $file path is passed through a filter hook called, 'comments_template'
 * which includes the TEMPLATEPATH and $file combined. Tries the $filtered path
 * first and if it fails it will require the default comment template from the
 * default theme. If either does not exist, then the WordPress process will be
 * halted. It is advised for that reason, that the default theme is not deleted.
 *
 * @todo Document globals
 * @uses $withcomments Will not try to get the comments if the post has none.
 *
 * @since 1.5.0
 *
 * @param string $file              Optional. The file to load. Default '/comments.php'.
 * @param bool   $separate_comments Optional. Whether to separate the comments by comment type. Default false.
 * @return null Returns null if no comments appear.
 */
function comments_template( $file = '/comments.php', $separate_comments = false ) {
    global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_ID, $user_identity, $overridden_cpage;

    if ( !(is_single() || is_page() || $withcomments) || empty($post) )
        return;

    if ( empty($file) )
        $file = '/comments.php';

    $req = get_option('require_name_email');

    /**
     * Comment author information fetched from the comment cookies.
     *
     * @uses wp_get_current_commenter()
     */
    $commenter = wp_get_current_commenter();

    /**
     * The name of the current comment author escaped for use in attributes.
     */
    $comment_author = $commenter['comment_author']; // Escaped by sanitize_comment_cookies()

    /**
     * The email address of the current comment author escaped for use in attributes.
     */
    $comment_author_email = $commenter['comment_author_email'];  // Escaped by sanitize_comment_cookies()

    /**
     * The url of the current comment author escaped for use in attributes.
     */
    $comment_author_url = esc_url($commenter['comment_author_url']);

    /** @todo Use API instead of SELECTs. */
    if ( $user_ID) {
        $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND (comment_approved = '1' OR ( user_id = %d AND comment_approved = '0' ) )  ORDER BY comment_date_gmt", $post->ID, $user_ID));
    } else if ( empty($comment_author) ) {
        $comments = get_comments( array('post_id' => $post->ID, 'status' => 'approve', 'order' => 'ASC') );
    } else {
        $comments = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND ( comment_approved = '1' OR ( comment_author = %s AND comment_author_email = %s AND comment_approved = '0' ) ) ORDER BY comment_date_gmt", $post->ID, wp_specialchars_decode($comment_author,ENT_QUOTES), $comment_author_email));
    }

    // keep $comments for legacy's sake
    /**
     * Filter the comments array.
     *
     * @since 2.1.0
     *
     * @param array $comments The array of comments supplied to the comments template.
     * @param int   $post->ID The post ID.
     */
    $wp_query->comments = apply_filters( 'comments_array', $comments, $post->ID );
    $comments = &$wp_query->comments;
    $wp_query->comment_count = count($wp_query->comments);
    update_comment_cache($wp_query->comments);

    if ( $separate_comments ) {
        $wp_query->comments_by_type = separate_comments($comments);
        $comments_by_type = &$wp_query->comments_by_type;
    }

    $overridden_cpage = false;
    if ( '' == get_query_var('cpage') && get_option('page_comments') ) {
        set_query_var( 'cpage', 'newest' == get_option('default_comments_page') ? get_comment_pages_count() : 1 );
        $overridden_cpage = true;
    }

    if ( !defined('COMMENTS_TEMPLATE') )
        define('COMMENTS_TEMPLATE', true);

    $theme_template = STYLESHEETPATH . $file;
    /**
     * Filter the path to the theme template file used for the comments template.
     *
     * @since 1.5.1
     *
     * @param string $theme_template The path to the theme template file.
     */
    $include = apply_filters( 'comments_template', $theme_template );
    if ( file_exists( $include ) )
        require( $include );
    elseif ( file_exists( TEMPLATEPATH . $file ) )
        require( TEMPLATEPATH . $file );
    else // Backward compat code will be removed in a future release
        require( ABSPATH . WPINC . '/theme-compat/comments.php');
}

/**
 * Display the JS popup script to show a comment.
 *
 * If the $file parameter is empty, then the home page is assumed. The defaults
 * for the window are 400px by 400px.
 *
 * For the comment link popup to work, this function has to be called or the
 * normal comment link will be assumed.
 *
 * @global string $wpcommentspopupfile  The URL to use for the popup window.
 * @global int    $wpcommentsjavascript Whether to use JavaScript. Set when function is called.
 *
 * @since 0.71
 *
 * @param int $width  Optional. The width of the popup window. Default 400.
 * @param int $height Optional. The height of the popup window. Default 400.
 * @param string $file Optional. Sets the location of the popup window.
 */
function comments_popup_script( $width = 400, $height = 400, $file = '' ) {
    global $wpcommentspopupfile, $wpcommentsjavascript;

    if (empty ($file)) {
        $wpcommentspopupfile = '';  // Use the index.
    } else {
        $wpcommentspopupfile = $file;
    }

    $wpcommentsjavascript = 1;
    $javascript = "<script type='text/javascript'>\nfunction wpopen (macagna) {\n    window.open(macagna, '_blank', 'width=$width,height=$height,scrollbars=yes,status=yes');\n}\n</script>\n";
    echo $javascript;
}

/**
 * Displays the link to the comments popup window for the current post ID.
 *
 * Is not meant to be displayed on single posts and pages. Should be used on the
 * lists of posts
 *
 * @global string $wpcommentspopupfile  The URL to use for the popup window.
 * @global int    $wpcommentsjavascript Whether to use JavaScript. Set when function is called.
 *
 * @since 0.71
 *
 * @param string $zero      Optional. The string to display when no comments. Default false.
 * @param string $one       Optional. The string to display when only one comment is available. Default false.
 * @param string $more      Optional. The string to display when there are more than one comment. Default false.
 * @param string $css_class Optional. The CSS class to use for comments. Default empty.
 * @param string $none      Optional. The string to display when comments have been turned off. Default false.
 * @return null Returns null on single posts and pages.
 */
function comments_popup_link( $zero = false, $one = false, $more = false, $css_class = '', $none = false ) {
    global $wpcommentspopupfile, $wpcommentsjavascript;

    $id = get_the_ID();

    if ( false === $zero ) $zero = __( 'No Comments' );
    if ( false === $one ) $one = __( '1 Comment' );
    if ( false === $more ) $more = __( '% Comments' );
    if ( false === $none ) $none = __( 'Comments Off' );

    $number = get_comments_number( $id );

    if ( 0 == $number && !comments_open() && !pings_open() ) {
        echo '<span' . ((!empty($css_class)) ? ' class="' . esc_attr( $css_class ) . '"' : '') . '>' . $none . '</span>';
        return;
    }

    if ( post_password_required() ) {
        echo __('Enter your password to view comments.');
        return;
    }

    echo '<a href="';
    if ( $wpcommentsjavascript ) {
        if ( empty( $wpcommentspopupfile ) )
            $home = home_url();
        else
            $home = get_option('siteurl');
        echo $home . '/' . $wpcommentspopupfile . '?comments_popup=' . $id;
        echo '" onclick="wpopen(this.href); return false"';
    } else { // if comments_popup_script() is not in the template, display simple comment link
        if ( 0 == $number )
            echo get_permalink() . '#respond';
        else
            comments_link();
        echo '"';
    }

    if ( !empty( $css_class ) ) {
        echo ' class="'.$css_class.'" ';
    }
    $title = the_title_attribute( array('echo' => 0 ) );

    $attributes = '';
    /**
     * Filter the comments popup link attributes for display.
     *
     * @since 2.5.0
     *
     * @param string $attributes The comments popup link attributes. Default empty.
     */
    echo apply_filters( 'comments_popup_link_attributes', $attributes );

    echo ' title="' . esc_attr( sprintf( __('Comment on %s'), $title ) ) . '">';
    comments_number( $zero, $one, $more );
    echo '</a>';
}

/**
 * Retrieve HTML content for reply to comment link.
 *
 * @since 2.7.0
 *
 * @param array $args {
 *     Optional. Override default arguments.
 *
 *     @type string 'add_below'  The first part of the selector used to identify the comment to respond below. The resulting
 *                               value is passed as the first parameter to addComment.moveForm(), concatenated
 *                               as $add_below-$comment->comment_ID. Default 'comment'.
 *     @type string 'respond_id' The selector identifying the responding comment. Passed as the third parameter to addComment.moveForm(),
 *                               and appended to the link URL as a hash value. Default 'respond'.
 *     @type string 'reply_text' The text of the Reply link. Default 'Reply'.
 *     @type string 'login_text' The text of the link to reply if logged out. Default 'Log in to Reply'.
 *     @type int    'depth'      The depth of the new comment. Must be greater than 0 and less than the value of the 'thread_comments_depth'
 *                               option set in Settings > Discussion.
 *                               Default 0.
 *     @type string 'before'     The text or HTML to add before the reply link. Default empty.
 *     @type string 'after'      The text or HTML to add after the reply link. Default empty.
 * }
 * @param int         $comment Optional. Comment being replied to. Default current comment.
 * @param int|WP_Post $post    Optional. Post ID or WP_Post object the comment is going to be displayed on. Default current post.
 * @return mixed Link to show comment form, if successful. False, if comments are closed.
 */
function get_comment_reply_link($args = array(), $comment = null, $post = null) {

    $defaults = array(
        'add_below'  => 'comment',
        'respond_id' => 'respond',
        'reply_text' => __('Reply'),
        'login_text' => __('Log in to Reply'),
        'depth'      => 0,
        'before'     => '',
        'after'      => ''
    );

    $args = wp_parse_args($args, $defaults);

    if ( 0 == $args['depth'] || $args['max_depth'] <= $args['depth'] )
        return;

    extract($args, EXTR_SKIP);

    $comment = get_comment($comment);
    if ( empty($post) )
        $post = $comment->comment_post_ID;
    $post = get_post($post);

    if ( !comments_open($post->ID) )
        return false;

    $link = '';

    if ( get_option('comment_registration') && ! is_user_logged_in() )
        $link = '<a rel="nofollow" class="comment-reply-login" href="' . esc_url( wp_login_url( get_permalink() ) ) . '">' . $login_text . '</a>';
    else
        $link = "<a class='comment-reply-link' href='" . esc_url( add_query_arg( 'replytocom', $comment->comment_ID ) ) . "#" . $respond_id . "' onclick='return addComment.moveForm(\"$add_below-$comment->comment_ID\", \"$comment->comment_ID\", \"$respond_id\", \"$post->ID\")'>$reply_text</a>";

    /**
     * Filter the comment reply link.
     *
     * @since 2.7.0
     *
     * @param string  $before  Text or HTML displayed before the reply link.
     * @param string  $link    The HTML markup for the comment reply link.
     * @param string  $after   Text or HTML displayed after the reply link.
     * @param array   $args    An array of arguments overriding the defaults.
     * @param object  $comment The object of the comment being replied.
     * @param WP_Post $post    The WP_Post object.
     */
    return apply_filters( 'comment_reply_link', $before . $link . $after, $args, $comment, $post );
}

/**
 * Displays the HTML content for reply to comment link.
 *
 * @since 2.7.0
 *
 * @param array       $args    Optional. Override default options, @see get_comment_reply_link()
 * @param int         $comment Optional. Comment being replied to. Default current comment.
 * @param int|WP_Post $post    Optional. Post ID or WP_Post object the comment is going to be displayed on. Default current post.
 * @return mixed Link to show comment form, if successful. False, if comments are closed.
 */
function comment_reply_link($args = array(), $comment = null, $post = null) {
    echo get_comment_reply_link($args, $comment, $post);
}

/**
 * Retrieve HTML content for reply to post link.
 *
 * @since 2.7.0
 *
 * @param array $args {
 *     Optional. Override default arguments.
 *
 *     @type string 'add_below'  The first part of the selector used to identify the comment to respond below.
 *                               The resulting value is passed as the first parameter to addComment.moveForm(),
 *                               concatenated as $add_below-$comment->comment_ID. Default is 'post'.
 *     @type string 'respond_id' The selector identifying the responding comment. Passed as the third parameter
 *                               to addComment.moveForm(), and appended to the link URL as a hash value. Default is 'respond'.
 *     @type string 'reply_text' The text of the Reply link. Default is 'Leave a Comment'.
 *     @type string 'login_text' The text of the link to reply if logged out. Default is 'Log in to leave a Comment'.
 *     @type string 'before'     The text or HTML to add before the reply link. Default empty.
 *     @type string 'after'      The text or HTML to add after the reply link. Default empty.
 * }
 * @param int|WP_Post $post    Optional. Post ID or WP_Post object the comment is going to be displayed on. Default current post.
 * @return string|bool|null Link to show comment form, if successful. False, if comments are closed.
 */
function get_post_reply_link($args = array(), $post = null) {
    $defaults = array(
        'add_below'  => 'post',
        'respond_id' => 'respond',
        'reply_text' => __('Leave a Comment'),
        'login_text' => __('Log in to leave a Comment'),
        'before'     => '',
        'after'      => '',
    );

    $args = wp_parse_args($args, $defaults);
    extract($args, EXTR_SKIP);
    $post = get_post($post);

    if ( !comments_open($post->ID) )
        return false;

    if ( get_option('comment_registration') && ! is_user_logged_in() )
        $link = '<a rel="nofollow" href="' . wp_login_url( get_permalink() ) . '">' . $login_text . '</a>';
    else
        $link = "<a rel='nofollow' class='comment-reply-link' href='" . get_permalink($post->ID) . "#$respond_id' onclick='return addComment.moveForm(\"$add_below-$post->ID\", \"0\", \"$respond_id\", \"$post->ID\")'>$reply_text</a>";

    $formatted_link = $before . $link . $after;
    /**
     * Filter the formatted post comments link HTML.
     *
     * @since 2.7.0
     *
     * @param string      $formatted The HTML-formatted post comments link.
     * @param int|WP_Post $post      The post ID or WP_Post object.
     */
    return apply_filters( 'post_comments_link', $formatted_link, $post );
}

/**
 * Displays the HTML content for reply to post link.
 *
 * @since 2.7.0
 *
 * @param array       $args Optional. Override default options, @see get_post_reply_link()
 * @param int|WP_Post $post Optional. Post ID or WP_Post object the comment is going to be displayed on. Default current post.
 * @return string|bool|null Link to show comment form, if successful. False, if comments are closed.
 */
function post_reply_link($args = array(), $post = null) {
    echo get_post_reply_link($args, $post);
}

/**
 * Retrieve HTML content for cancel comment reply link.
 *
 * @since 2.7.0
 *
 * @param string $text Optional. Text to display for cancel reply link. Default empty.
 */
function get_cancel_comment_reply_link( $text = '' ) {
    if ( empty($text) )
        $text = __('Click here to cancel reply.');

    $style = isset($_GET['replytocom']) ? '' : ' style="display:none;"';
    $link = esc_html( remove_query_arg('replytocom') ) . '#respond';

    $formatted_link = '<a rel="nofollow" id="cancel-comment-reply-link" href="' . $link . '"' . $style . '>' . $text . '</a>';
    /**
     * Filter the cancel comment reply link HTML.
     *
     * @since 2.7.0
     *
     * @param string $formatted_link The HTML-formatted cancel comment reply link.
     * @param string $link           The cancel comment reply link URL.
     * @param string $text           The cancel comment reply link text.
     */
    return apply_filters( 'cancel_comment_reply_link', $formatted_link, $link, $text );
}

/**
 * Display HTML content for cancel comment reply link.
 *
 * @since 2.7.0
 *
 * @param string $text Optional. Text to display for cancel reply link. Default empty.
 */
function cancel_comment_reply_link( $text = '' ) {
    echo get_cancel_comment_reply_link($text);
}

/**
 * Retrieve hidden input HTML for replying to comments.
 *
 * @since 3.0.0
 *
 * @param int $id Optional. Post ID. Default current post ID.
 * @return string Hidden input HTML for replying to comments
 */
function get_comment_id_fields( $id = 0 ) {
    if ( empty( $id ) )
        $id = get_the_ID();

    $replytoid = isset($_GET['replytocom']) ? (int) $_GET['replytocom'] : 0;
    $result  = "<input type='hidden' name='comment_post_ID' value='$id' id='comment_post_ID' />\n";
    $result .= "<input type='hidden' name='comment_parent' id='comment_parent' value='$replytoid' />\n";

    /**
     * Filter the returned comment id fields.
     *
     * @since 3.0.0
     *
     * @param string $result    The HTML-formatted hidden id field comment elements.
     * @param int    $id        The post ID.
     * @param int    $replytoid The id of the comment being replied to.
     */
    return apply_filters( 'comment_id_fields', $result, $id, $replytoid );
}

/**
 * Output hidden input HTML for replying to comments.
 *
 * @since 2.7.0
 *
 * @param int $id Optional. Post ID. Default current post ID.
 */
function comment_id_fields( $id = 0 ) {
    echo get_comment_id_fields( $id );
}

/**
 * Display text based on comment reply status.
 *
 * Only affects users with Javascript disabled.
 *
 * @since 2.7.0
 *
 * @param string $noreplytext  Optional. Text to display when not replying to a comment. Default false.
 * @param string $replytext    Optional. Text to display when replying to a comment.
 *                             Default false. Accepts "%s" for the author of the comment being replied to.
 * @param string $linktoparent Optional. Boolean to control making the author's name a link to their comment. Default true.
 */
function comment_form_title( $noreplytext = false, $replytext = false, $linktoparent = true ) {
    global $comment;

    if ( false === $noreplytext ) $noreplytext = __( 'Leave a Reply' );
    if ( false === $replytext ) $replytext = __( 'Leave a Reply to %s' );

    $replytoid = isset($_GET['replytocom']) ? (int) $_GET['replytocom'] : 0;

    if ( 0 == $replytoid )
        echo $noreplytext;
    else {
        $comment = get_comment($replytoid);
        $author = ( $linktoparent ) ? '<a href="#comment-' . get_comment_ID() . '">' . get_comment_author() . '</a>' : get_comment_author();
        printf( $replytext, $author );
    }
}

/**
 * HTML comment list class.
 *
 * @package WordPress
 * @uses Walker
 * @since 2.7.0
 */
class Walker_Comment extends Walker {
    /**
     * What the class handles.
     *
     * @see Walker::$tree_type
     *
     * @since 2.7.0
     * @var string
     */
    var $tree_type = 'comment';

    /**
     * DB fields to use.
     *
     * @see Walker::$db_fields
     *
     * @since 2.7.0
     * @var array
     */
    var $db_fields = array ('parent' => 'comment_parent', 'id' => 'comment_ID');

    /**
     * Start the list before the elements are added.
     *
     * @see Walker::start_lvl()
     *
     * @since 2.7.0
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param int $depth Depth of comment.
     * @param array $args Uses 'style' argument for type of HTML list.
     */
    function start_lvl( &$output, $depth = 0, $args = array() ) {
        $GLOBALS['comment_depth'] = $depth + 1;

        switch ( $args['style'] ) {
            case 'div':
                break;
            case 'ol':
                $output .= '<ol class="children">' . "\n";
                break;
            default:
            case 'ul':
                $output .= '<ul class="children">' . "\n";
                break;
        }
    }

    /**
     * End the list of items after the elements are added.
     *
     * @see Walker::end_lvl()
     *
     * @since 2.7.0
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param int    $depth  Depth of comment.
     * @param array  $args   Will only append content if style argument value is 'ol' or 'ul'.
     */
    function end_lvl( &$output, $depth = 0, $args = array() ) {
        $GLOBALS['comment_depth'] = $depth + 1;

        switch ( $args['style'] ) {
            case 'div':
                break;
            case 'ol':
                $output .= "</ol><!-- .children -->\n";
                break;
            default:
            case 'ul':
                $output .= "</ul><!-- .children -->\n";
                break;
        }
    }

    /**
     * Traverse elements to create list from elements.
     *
     * This function is designed to enhance Walker::display_element() to
     * display children of higher nesting levels than selected inline on
     * the highest depth level displayed. This prevents them being orphaned
     * at the end of the comment list.
     *
     * Example: max_depth = 2, with 5 levels of nested content.
     * 1
     *  1.1
     *    1.1.1
     *    1.1.1.1
     *    1.1.1.1.1
     *    1.1.2
     *    1.1.2.1
     * 2
     *  2.2
     *
     * @see Walker::display_element()
     *
     * @since 2.7.0
     *
     * @param object $element           Data object.
     * @param array  $children_elements List of elements to continue traversing.
     * @param int    $max_depth         Max depth to traverse.
     * @param int    $depth             Depth of current element.
     * @param array  $args              An array of arguments. @see wp_list_comments()
     * @param string $output            Passed by reference. Used to append additional content.
     * @return null Null on failure with no changes to parameters.
     */
    function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {

        if ( !$element )
            return;

        $id_field = $this->db_fields['id'];
        $id = $element->$id_field;

        parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );

        // If we're at the max depth, and the current element still has children, loop over those and display them at this level
        // This is to prevent them being orphaned to the end of the list.
        if ( $max_depth <= $depth + 1 && isset( $children_elements[$id]) ) {
            foreach ( $children_elements[ $id ] as $child )
                $this->display_element( $child, $children_elements, $max_depth, $depth, $args, $output );

            unset( $children_elements[ $id ] );
        }

    }

    /**
     * Start the element output.
     *
     * @see Walker::start_el()
     *
     * @since 2.7.0
     *
     * @param string $output  Passed by reference. Used to append additional content.
     * @param object $comment Comment data object.
     * @param int    $depth   Depth of comment in reference to parents.
     * @param array  $args    An array of arguments. @see wp_list_comments()
     */
    function start_el( &$output, $comment, $depth = 0, $args = array(), $id = 0 ) {
        $depth++;
        $GLOBALS['comment_depth'] = $depth;
        $GLOBALS['comment'] = $comment;

        if ( !empty( $args['callback'] ) ) {
            ob_start();
            call_user_func( $args['callback'], $comment, $args, $depth );
            $output .= ob_get_clean();
            return;
        }

        if ( ( 'pingback' == $comment->comment_type || 'trackback' == $comment->comment_type ) && $args['short_ping'] ) {
            ob_start();
            $this->ping( $comment, $depth, $args );
            $output .= ob_get_clean();
        } elseif ( 'html5' === $args['format'] ) {
            ob_start();
            $this->html5_comment( $comment, $depth, $args );
            $output .= ob_get_clean();
        } else {
            ob_start();
            $this->comment( $comment, $depth, $args );
            $output .= ob_get_clean();
        }
    }

    /**
     * Ends the element output, if needed.
     *
     * @see Walker::end_el()
     *
     * @since 2.7.0
     *
     * @param string $output  Passed by reference. Used to append additional content.
     * @param object $comment The comment object. Default current comment.
     * @param int    $depth   Depth of comment.
     * @param array  $args    An array of arguments. @see wp_list_comments()
     */
    function end_el( &$output, $comment, $depth = 0, $args = array() ) {
        if ( !empty( $args['end-callback'] ) ) {
            ob_start();
            call_user_func( $args['end-callback'], $comment, $args, $depth );
            $output .= ob_get_clean();
            return;
        }
        if ( 'div' == $args['style'] )
            $output .= "</div><!-- #comment-## -->\n";
        else
            $output .= "</li><!-- #comment-## -->\n";
    }

    /**
     * Output a pingback comment.
     *
     * @access protected
     * @since 3.6.0
     *
     * @param object $comment The comment object.
     * @param int    $depth   Depth of comment.
     * @param array  $args    An array of arguments. @see wp_list_comments()
     */
    protected function ping( $comment, $depth, $args ) {
        $tag = ( 'div' == $args['style'] ) ? 'div' : 'li';
?>
        <<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class(); ?>>
            <div class="comment-body">
                <?php _e( 'Pingback:' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
            </div>
<?php
    }

    /**
     * Output a single comment.
     *
     * @access protected
     * @since 3.6.0
     *
     * @param object $comment Comment to display.
     * @param int    $depth   Depth of comment.
     * @param array  $args    An array of arguments. @see wp_list_comments()
     */
    protected function comment( $comment, $depth, $args ) {
        if ( 'div' == $args['style'] ) {
            $tag = 'div';
            $add_below = 'comment';
        } else {
            $tag = 'li';
            $add_below = 'div-comment';
        }
?>
        <?php echo $tag; ?> <?php comment_class( empty( $args['has_children'] ) ? '' : 'parent' ); ?> id="comment-<?php comment_ID(); ?>">
        <?php if ( 'div' != $args['style'] ) : ?>
        <div id="div-comment-<?php comment_ID(); ?>" class="comment-body">
        <?php endif; ?>
        <div class="comment-author vcard">
            <?php if ( 0 != $args['avatar_size'] ) echo get_avatar( $comment, $args['avatar_size'] ); ?>
            <?php printf( __( '<cite class="fn">%s</cite> <span class="says">says:</span>' ), get_comment_author_link() ); ?>
        </div>
        <?php if ( '0' == $comment->comment_approved ) : ?>
        <em class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.' ) ?></em>
        <br />
        <?php endif; ?>

        <div class="comment-meta commentmetadata"><a href="<?php echo esc_url( get_comment_link( $comment->comment_ID ) ); ?>">
            <?php
                /* translators: 1: date, 2: time */
                printf( __( '%1$s at %2$s' ), get_comment_date(),  get_comment_time() ); ?></a><?php edit_comment_link( __( '(Edit)' ), '&nbsp;&nbsp;', '' );
            ?>
        </div>

        <?php comment_text( get_comment_id(), array_merge( $args, array( 'add_below' => $add_below, 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>

        <div class="reply">
            <?php comment_reply_link( array_merge( $args, array( 'add_below' => $add_below, 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
        </div>
        <?php if ( 'div' != $args['style'] ) : ?>
        </div>
        <?php endif; ?>
<?php
    }

    /**
     * Output a comment in the HTML5 format.
     *
     * @access protected
     * @since 3.6.0
     *
     * @param object $comment Comment to display.
     * @param int    $depth   Depth of comment.
     * @param array  $args    An array of arguments. @see wp_list_comments()
     */
    protected function html5_comment( $comment, $depth, $args ) {
        $tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
?>
        <<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( empty( $args['has_children'] ) ? '' : 'parent' ); ?>>
            <article id="div-comment-<?php comment_ID(); ?>" class="comment-body">
                <footer class="comment-meta">
                    <div class="comment-author vcard">
                        <?php if ( 0 != $args['avatar_size'] ) echo get_avatar( $comment, $args['avatar_size'] ); ?>
                        <?php printf( __( '%s <span class="says">says:</span>' ), sprintf( '<b class="fn">%s</b>', get_comment_author_link() ) ); ?>
                    </div><!-- .comment-author -->

                    <div class="comment-metadata">
                        <a href="<?php echo esc_url( get_comment_link( $comment->comment_ID ) ); ?>">
                            <time datetime="<?php comment_time( 'c' ); ?>">
                                <?php printf( _x( '%1$s at %2$s', '1: date, 2: time' ), get_comment_date(), get_comment_time() ); ?>
                            </time>
                        </a>
                        <?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
                    </div><!-- .comment-metadata -->

                    <?php if ( '0' == $comment->comment_approved ) : ?>
                    <p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.' ); ?></p>
                    <?php endif; ?>
                </footer><!-- .comment-meta -->

                <div class="comment-content">
                    <?php comment_text(); ?>
                </div><!-- .comment-content -->

                <div class="reply">
                    <?php comment_reply_link( array_merge( $args, array( 'add_below' => 'div-comment', 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
                </div><!-- .reply -->
            </article><!-- .comment-body -->
<?php
    }
}

/**
 * List comments.
 *
 * Used in the comments.php template to list comments for a particular post.
 *
 * @since 2.7.0
 *
 * @param string|array $args {
 *     Optional. Formatting options.
 *
 *     @type string 'walker'            The Walker class used to list comments. Default null.
 *     @type int    'max_depth'         The maximum comments depth. Default empty.
 *     @type string 'style'             The style of list ordering. Default 'ul'. Accepts 'ul', 'ol'.
 *     @type string 'callback'          Callback function to use. Default null.
 *     @type string 'end-callback'      Callback function to use at the end. Default null.
 *     @type string 'type'              Type of comments to list.
 *                                      Default 'all'. Accepts 'all', 'comment', 'pingback', 'trackback', 'pings'.
 *     @type int    'page'              Page ID to list comments for. Default empty.
 *     @type int    'per_page'          Number of comments to list per page. Default empty.
 *     @type int    'avatar_size'       Height and width dimensions of the avatar size. Default 32.
 *     @type string 'reverse_top_level' Ordering of the listed comments. Default null. Accepts 'desc', 'asc'.
 *     @type bool   'reverse_children'  Whether to reverse child comments in the list. Default null.
 *     @type string 'format'            How to format the comments list.
 *                                      Default 'html5' if the theme supports it. Accepts 'html5', 'xhtml'.
 *     @type bool   'short_ping'        Whether to output short pings. Default false.
 *     @type bool   'echo'              Whether to echo the output or return it. Default true.
 * }
 * @param array $comments Optional. Array of comment objects. @see WP_Query->comments
 */
function wp_list_comments( $args = array(), $comments = null ) {
    global $wp_query, $comment_alt, $comment_depth, $comment_thread_alt, $overridden_cpage, $in_comment_loop;

    $in_comment_loop = true;

    $comment_alt = $comment_thread_alt = 0;
    $comment_depth = 1;

    $defaults = array(
        'walker'            => null,
        'max_depth'         => '',
        'style'             => 'ul',
        'callback'          => null,
        'end-callback'      => null,
        'type'              => 'all',
        'page'              => '',
        'per_page'          => '',
        'avatar_size'       => 32,
        'reverse_top_level' => null,
        'reverse_children'  => '',
        'format'            => current_theme_supports( 'html5', 'comment-list' ) ? 'html5' : 'xhtml',
        'short_ping'        => false,
        'echo'              => true,
    );

    $r = wp_parse_args( $args, $defaults );

    // Figure out what comments we'll be looping through ($_comments)
    if ( null !== $comments ) {
        $comments = (array) $comments;
        if ( empty($comments) )
            return;
        if ( 'all' != $r['type'] ) {
            $comments_by_type = separate_comments($comments);
            if ( empty($comments_by_type[$r['type']]) )
                return;
            $_comments = $comments_by_type[$r['type']];
        } else {
            $_comments = $comments;
        }
    } else {
        if ( empty($wp_query->comments) )
            return;
        if ( 'all' != $r['type'] ) {
            if ( empty($wp_query->comments_by_type) )
                $wp_query->comments_by_type = separate_comments($wp_query->comments);
            if ( empty($wp_query->comments_by_type[$r['type']]) )
                return;
            $_comments = $wp_query->comments_by_type[$r['type']];
        } else {
            $_comments = $wp_query->comments;
        }
    }

    if ( '' === $r['per_page'] && get_option('page_comments') )
        $r['per_page'] = get_query_var('comments_per_page');

    if ( empty($r['per_page']) ) {
        $r['per_page'] = 0;
        $r['page'] = 0;
    }

    if ( '' === $r['max_depth'] ) {
        if ( get_option('thread_comments') )
            $r['max_depth'] = get_option('thread_comments_depth');
        else
            $r['max_depth'] = -1;
    }

    if ( '' === $r['page'] ) {
        if ( empty($overridden_cpage) ) {
            $r['page'] = get_query_var('cpage');
        } else {
            $threaded = ( -1 != $r['max_depth'] );
            $r['page'] = ( 'newest' == get_option('default_comments_page') ) ? get_comment_pages_count($_comments, $r['per_page'], $threaded) : 1;
            set_query_var( 'cpage', $r['page'] );
        }
    }
    // Validation check
    $r['page'] = intval($r['page']);
    if ( 0 == $r['page'] && 0 != $r['per_page'] )
        $r['page'] = 1;

    if ( null === $r['reverse_top_level'] )
        $r['reverse_top_level'] = ( 'desc' == get_option('comment_order') );

    extract( $r, EXTR_SKIP );

    if ( empty($walker) )
        $walker = new Walker_Comment;

    $output = $walker->paged_walk($_comments, $max_depth, $page, $per_page, $r);
    $wp_query->max_num_comment_pages = $walker->max_pages;

    $in_comment_loop = false;

    if ( $r['echo'] )
        echo $output;
    else
        return $output;
}

/**
 * Output a complete commenting form for use within a template.
 *
 * Most strings and form fields may be controlled through the $args array passed
 * into the function, while you may also choose to use the comment_form_default_fields
 * filter to modify the array of default fields if you'd just like to add a new
 * one or remove a single field. All fields are also individually passed through
 * a filter of the form comment_form_field_$name where $name is the key used
 * in the array of fields.
 *
 * @since 3.0.0
 *
 * @param array       $args {
 *     Optional. Default arguments and form fields to override.
 *
 *     @type array 'fields' {
 *         Default comment fields, filterable by default via the 'comment_form_default_fields' hook.
 *
 *         @type string 'author' The comment author field HTML.
 *         @type string 'email'  The comment author email field HTML.
 *         @type string 'url'    The comment author URL field HTML.
 *     }
 *     @type string 'comment_field'        The comment textarea field HTML.
 *     @type string 'must_log_in'          HTML element for a 'must be logged in to comment' message.
 *     @type string 'logged_in_as'         HTML element for a 'logged in as <user>' message.
 *     @type string 'comment_notes_before' HTML element for a message displayed before the comment form.
 *                                         Default 'Your email address will not be published.'.
 *     @type string 'comment_notes_after'  HTML element for a message displayed after the comment form.
 *                                         Default 'You may use these HTML tags and attributes ...'.
 *     @type string 'id_form'              The comment form element id attribute. Default 'commentform'.
 *     @type string 'id_submit'            The comment submit element id attribute. Default 'submit'.
 *     @type string 'title_reply'          The translatable 'reply' button label. Default 'Leave a Reply'.
 *     @type string 'title_reply_to'       The translatable 'reply-to' button label. Default 'Leave a Reply to %s',
 *                                         where %s is the author of the comment being replied to.
 *     @type string 'cancel_reply_link'    The translatable 'cancel reply' button label. Default 'Cancel reply'.
 *     @type string 'label_submit'         The translatable 'submit' button label. Default 'Post a comment'.
 *     @type string 'format'               The comment form format. Default 'xhtml'. Accepts 'xhtml', 'html5'.
 * }
 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object to generate the form for. Default current post.
 */
function comment_form( $args = array(), $post_id = null ) {
    if ( null === $post_id )
        $post_id = get_the_ID();
    else
        $id = $post_id;

    $commenter = wp_get_current_commenter();
    $user = wp_get_current_user();
    $user_identity = $user->exists() ? $user->display_name : '';

    $args = wp_parse_args( $args );
    if ( ! isset( $args['format'] ) )
        $args['format'] = current_theme_supports( 'html5', 'comment-form' ) ? 'html5' : 'xhtml';

    $req      = get_option( 'require_name_email' );
    $aria_req = ( $req ? " aria-required='true'" : '' );
    $html5    = 'html5' === $args['format'];
    $fields   =  array(
        'author' => '<p class="comment-form-author">' . '<label for="author">' . __( 'Name' ) . ( $req ? ' <span class="required">*</span>' : '' ) . '</label> ' .
                    '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) . '" size="30"' . $aria_req . ' /></p>',
      'email'  => '<p class="comment-form-email">' . '<label for="email">' . __( 'Email' ) . ( $req ? ' <span class="required">*</span>' : '' ) . '</label> ' .
                    '<input id="email" name="email" ' . ( $html5 ? 'type="email"' : 'type="text"' ) . ' value="' . esc_attr(  $commenter['comment_author_email'] ) . '" size="30"' . $aria_req . ' /></p>',
        'url'    => '<p class="comment-form-url">' . '<label for="url">' . __( 'Website' ) . '</label> ' .
                    '<input id="url" name="url" ' . ( $html5 ? 'type="url"' : 'type="text"' ) . ' value="' . esc_attr( $commenter['comment_author_url'] ) . '" size="30" /></p>',
    );

    $required_text = sprintf( ' ' . __('Required fields are marked %s'), '<span class="required">*</span>' );

    /**
     * Filter the default comment form fields.
     *
     * @since 3.0.0
     *
     * @param array $fields The default comment fields.
     */
    $fields = apply_filters( 'comment_form_default_fields', $fields );
    $defaults = array(
        'fields'               => $fields,
        'comment_field'        => '<p class="comment-form-comment"><label for="comment">' . _x( 'Comment', 'noun' ) . '</label> <textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea></p>',
        'must_log_in'          => '<p class="must-log-in">' . sprintf( __( 'You must be <a href="%s">logged in</a> to post a comment.' ), wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
        'logged_in_as'         => '<p class="logged-in-as">' . sprintf( __( 'Logged in as <a href="%1$s">%2$s</a>. <a href="%3$s" title="Log out of this account">Log out?</a>' ), get_edit_user_link(), $user_identity, wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
        'comment_notes_before' => '<p class="comment-notes">' . __( 'Your email address will not be published.' ) . ( $req ? $required_text : '' ) . '</p>',
        'comment_notes_after'  => '<p class="form-allowed-tags">' . sprintf( __( 'You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: %s' ), ' <code>' . allowed_tags() . '</code>' ) . '</p>',
        'id_form'              => 'commentform',
        'id_submit'            => 'submit',
        'title_reply'          => __( 'Leave a Reply' ),
        'title_reply_to'       => __( 'Leave a Reply to %s' ),
        'cancel_reply_link'    => __( 'Cancel reply' ),
        'label_submit'         => __( 'Post Comment' ),
        'format'               => 'xhtml',
    );



  <?php
$fields =  array(
    'author' => '<p class="comment-form-author">' . '<label for="author">' . __( 'Name' ) . '</label> ' . ( $req ? '<span class="required">*</span>' : '' ) .
                '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) . '" size="30"' . $aria_req . ' /></p>',
    'email'  => '<p class="comment-form-email"><label for="email">' . __( 'Email' ) . '</label> ' . ( $req ? '<span class="required">*</span>' : '' ) .
                '<input id="email" name="email" type="text" value="' . esc_attr(  $commenter['comment_author_email'] ) . '" size="30"' . $aria_req . ' /></p>',
    'url'    => '<p class="comment-form-url"><label for="url">' . __( 'Website' ) . '</label>' .
                '<input id="url" name="url" type="text" value="' . esc_attr( $commenter['comment_author_url'] ) . '" size="30" /></p>',
); ?>



    /**
     * Filter the comment form default arguments.
     *
     * Use 'comment_form_default_fields' to filter the comment fields.
     *
     * @since 3.0.0
     *
     * @param array $defaults The default comment form arguments.
     */
    $args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) );

    ?>
        <?php if ( comments_open( $post_id ) ) : ?>
            <?php
            /**
             * Fires before the comment form.
             *
             * @since 3.0.0
             */
            do_action( 'comment_form_before' );
            ?>
            <div id="respond" class="comment-respond">
                <h3 id="reply-title" class="comment-reply-title"><?php comment_form_title( $args['title_reply'], $args['title_reply_to'] ); ?> <small><?php cancel_comment_reply_link( $args['cancel_reply_link'] ); ?></small></h3>
                <?php if ( get_option( 'comment_registration' ) && !is_user_logged_in() ) : ?>
                    <?php echo $args['must_log_in']; ?>
                    <?php
                    /**
                     * Fires after the HTML-formatted 'must log in after' message in the comment form.
                     *
                     * @since 3.0.0
                     */
                    do_action( 'comment_form_must_log_in_after' );
                    ?>
                <?php else : ?>
                    <form action="<?php echo site_url( '/wp-comments-post.php' ); ?>" method="post" id="<?php echo esc_attr( $args['id_form'] ); ?>" class="comment-form"<?php echo $html5 ? ' novalidate' : ''; ?>>
                        <?php
                        /**
                         * Fires at the top of the comment form, inside the <form> tag.
                         *
                         * @since 3.0.0
                         */
                        do_action( 'comment_form_top' );
                        ?>
                        <?php if ( is_user_logged_in() ) : ?>
                            <?php
                            /**
                             * Filter the 'logged in' message for the comment form for display.
                             *
                             * @since 3.0.0
                             *
                             * @param string $args['logged_in_as'] The logged-in-as HTML-formatted message.
                             * @param array  $commenter            An array containing the comment author's username, email, and URL.
                             * @param string $user_identity        If the commenter is a registered user, the display name, blank otherwise.
                             */
                            echo apply_filters( 'comment_form_logged_in', $args['logged_in_as'], $commenter, $user_identity );
                            ?>
                            <?php
                            /**
                             * Fires after the is_user_logged_in() check in the comment form.
                             *
                             * @since 3.0.0
                             *
                             * @param array  $commenter     An array containing the comment author's username, email, and URL.
                             * @param string $user_identity If the commenter is a registered user, the display name, blank otherwise.
                             */
                            do_action( 'comment_form_logged_in_after', $commenter, $user_identity );
                            ?>
                        <?php else : ?>
                            <?php echo $args['comment_notes_before']; ?>
                            <?php
                            /**
                             * Fires before the comment fields in the comment form.
                             *
                             * @since 3.0.0
                             */
                            do_action( 'comment_form_before_fields' );
                            foreach ( (array) $args['fields'] as $name => $field ) {
                                /**
                                 * Filter a comment form field for display.
                                 *
                                 * The dynamic portion of the filter hook, $name, refers to the name
                                 * of the comment form field. Such as 'author', 'email', or 'url'.
                                 *
                                 * @since 3.0.0
                                 *
                                 * @param string $field The HTML-formatted output of the comment form field.
                                 */
                                echo apply_filters( "comment_form_field_{$name}", $field ) . "\n";
                            }
                            /**
                             * Fires after the comment fields in the comment form.
                             *
                             * @since 3.0.0
                             */
                            do_action( 'comment_form_after_fields' );
                            ?>
                        <?php endif; ?>
                        <?php
                        /**
                         * Filter the content of the comment textarea field for display.
                         *
                         * @since 3.0.0
                         *
                         * @param string $args['comment_field'] The content of the comment textarea field.
                         */
                        echo apply_filters( 'comment_form_field_comment', $args['comment_field'] );
                        ?>
                        <?php echo $args['comment_notes_after']; ?>
                        <p class="form-submit">
                            <input name="submit" type="submit" id="<?php echo esc_attr( $args['id_submit'] ); ?>" value="<?php echo esc_attr( $args['label_submit'] ); ?>" />
                            <?php comment_id_fields( $post_id ); ?>
                        </p>
                        <?php
                        /**
                         * Fires at the bottom of the comment form, inside the closing </form> tag.
                         *
                         * @since 1.5.0
                         *
                         * @param int $post_id The post ID.
                         */
                        do_action( 'comment_form', $post_id );
                        ?>
                    </form>
                <?php endif; ?>
            </div><!-- #respond -->
            <?php
            /**
             * Fires after the comment form.
             *
             * @since 3.0.0
             */
            do_action( 'comment_form_after' );
        else :
            /**
             * Fires after the comment form if comments are closed.
             *
             * @since 3.0.0
             */
            do_action( 'comment_form_comments_closed' );
        endif;
}