Replacing the existing date filter (Tribe Bar/3.5)

gistfile1.php

<?php
/**
 * Outline for replacing the existing datepicker with a custom filter field.
 * 
 * (TEC 3.5)
 */
add_action( 'init', 'replace_tribe_bar_search_field', 50 );

function replace_tribe_bar_search_field() {
	$callback = array( TribeEvents::instance(), 'setup_date_search_in_bar' );
	remove_filter( 'tribe-events-bar-filters', $callback, 1, 1 );
	add_filter( 'tribe-events-bar-filters', 'replacement_date_field' );
}

function replacement_date_field( $filters ) {
	array_unshift( $filters, array(
		'name' => 'custom-date-search',
		'caption' => 'Date',
		'html' => '<input type="text" name="datesearch" value="Some date" />'
	) );
	return $filters;
}