get_the_title_rss example

    return apply_filters( 'the_title_rss', $title );
}

/** * Displays the post title in the feed. * * @since 0.71 */
function the_title_rss() {
    echo get_the_title_rss();
}

/** * Retrieves the post content for feeds. * * @since 2.9.0 * * @see get_the_content() * * @param string $feed_type The type of feed. rss2 | atom | rss | rdf * @return string The filtered content. */

    do_action( 'rss2_comments_ns' );
    ?> > <channel> <title> <?php     if ( is_singular() ) {
        /* translators: Comments feed title. %s: Post title. */
        printf( ent2ncr( __( 'Comments on: %s' ) ), get_the_title_rss() );
    } elseif ( is_search() ) {
        /* translators: Comments feed title. 1: Site title, 2: Search query. */
        printf( ent2ncr( __( 'Comments for %1$s searching on %2$s' ) ), get_bloginfo_rss( 'name' ), get_search_query() );
    } else {
        /* translators: Comments feed title. %s: Site title. */
        printf( ent2ncr( __( 'Comments for %s' ) ), get_wp_title_rss() );
    }
    ?> </title> <atom:link href="<?php self_link(); ?>" rel="self" type="application/rss+xml" /> <link><?php ( is_single() ) ? the_permalink_rss() : bloginfo_rss( 'url' ); ?></link> <description>

        do_action( 'atom_comments_ns' );
    ?> > <title type="text"> <?php     if ( is_singular() ) {
        /* translators: Comments feed title. %s: Post title. */
        printf( ent2ncr( __( 'Comments on %s' ) ), get_the_title_rss() );
    } elseif ( is_search() ) {
        /* translators: Comments feed title. 1: Site title, 2: Search query. */
        printf( ent2ncr( __( 'Comments for %1$s searching on %2$s' ) ), get_bloginfo_rss( 'name' ), get_search_query() );
    } else {
        /* translators: Comments feed title. %s: Site title. */
        printf( ent2ncr( __( 'Comments for %s' ) ), get_wp_title_rss() );
    }
    ?> </title> <subtitle type="text"><?php bloginfo_rss( 'description' ); ?></subtitle> <updated>