Unselected Year/Month/Day not working in {html_select_date}

[bluepowder]

Using the latest master from GitHub (or the 3.1.30 release), it is not possible to have an unselected Year/Month/Day, as described in the documentation (see below). Attempting to use "2015-08-" as a time value (for example) defaults to the current date.

On:
https://www.smarty.net/docs/en/language.function.html.select.date.tpl

year_empty -> "use values like “-MM-DD” as time-attribute to indicate an unselected year"
month_empty -> "use values like “YYYY--DD” as time-attribute to indicate an unselected month"
day_empty -> "use values like “YYYY-MM-” as time-attribute to indicate an unselected day"

[bluepowder]

After further examining the documentation & code ( https://github.com/smarty-php/smarty/blob/master/libs/plugins/function.html_select_date.php ) - and not finding any examples of using arrays for $time - I was able to make this work using an array. The original issue still exists - "1997--", etc does not work.

Here's how the array works:

$date_x = "2005-00-00"; //For when I needed just a year, no month or day
$date_y = explode('-', $date_x);

// "Date_" is the default prefix
$date_z = [
    'Date_Year' => ($date_y[0] > 0 ? $date_y[0] : 'null'),
    'Date_Month' => ($date_y[1] > 0 ? $date_y[1] : 'null'),
    'Date_Day' => ($date_y[2] > 0 ? $date_y[2] : 'null')
];

$smarty->assign('time', $date_z);

[wisskid]

@bluepowder is correct this not doing what it should do according to de docs
A fix would not be too hard and I don't see how it could mess anything up unintentionally.
Alternatively, since there is a workaround with an array, we could also just fix the docs.