WordPress at a glance
filter is not described

the_title_rss filter-hook . WP 1.2.0

Filters the post title for use in a feed.

Usage

add_filter( 'the_title_rss', 'filter_function_name_5085' );
function filter_function_name_5085( $title ){
	// filter...

	return $title;
}
$title(string)
The current post title.

Where the hook is called

get_the_title_rss()
export_wp()
wp-includes/feed.php 163
$title = apply_filters( 'the_title_rss', $title );
wp-includes/feed-rss2-comments.php 78
$title = apply_filters( 'the_title_rss', $title );
wp-includes/feed-atom-comments.php 79
$title = apply_filters( 'the_title_rss', $title );
wp-admin/includes/export.php 506
echo apply_filters( 'the_title_rss', $post->post_title );

Where the hook is used (in WP core)

wp-includes/default-filters.php 202
add_filter( 'the_title_rss', 'strip_tags' );
wp-includes/default-filters.php 203
add_filter( 'the_title_rss', 'ent2ncr', 8 );
wp-includes/default-filters.php 204
add_filter( 'the_title_rss', 'esc_html' );