WordPress at a glance
filter is not described

title_save_pre filter-hook . WP 1.0

This filter is documented in wp-includes/post.php

Usage

add_filter( 'title_save_pre', 'filter_function_name_9432' );
function filter_function_name_9432( $wp_slash ){
	// filter...

	return $wp_slash;
}
$wp_slash
-

Where the hook is called

WP_Customize_Nav_Menu_Item_Setting::sanitize()
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php 702
$menu_item_value['title'] = wp_unslash( apply_filters( 'title_save_pre', wp_slash( $menu_item_value['title'] ) ) );

Where the hook is used (in WP core)

wp-includes/default-filters.php 250
add_filter( 'title_save_pre', 'trim' );
wp-includes/kses.php 1704
add_filter('title_save_pre', 'wp_filter_kses');
wp-includes/kses.php 1732
remove_filter('title_save_pre', 'wp_filter_kses');