WordPress at a glance
filter is not described

the_excerpt_export filter-hook . WP 2.6.0

Filters the post excerpt used for WXR exports.

Usage

add_filter( 'the_excerpt_export', 'filter_function_name_418' );
function filter_function_name_418( $post_excerpt ){
	// filter...

	return $post_excerpt;
}
$post_excerpt(string)
Excerpt for the current post.

Where the hook is called

export_wp()
wp-admin/includes/export.php 531
echo wxr_cdata( apply_filters( 'the_excerpt_export', $post->post_excerpt ) );

Where the hook is used (in WP core)

Does not used.