Datepicker: Broken handling of four digit years before year 100

[Lexiyntax]

When entering an early four-digit year, i.e. 03/04/11, it will be translated to 03/04/2011 in the year browser. This is incorrect; a four digit year of 03/04/11 must be 03/04/0011 in the four digit year format and shown as such. Additionally, trying to manually correct it using 03/04/0011 still shows the wrong date picker, for 2011 instead of 0011.

This bug makes it impossible to correctly browse and enter early dates for historical data entry and processing.

[kzys]

Because Datapicker has shortYearCutoff and default value is +10. If you want to use Datapicker on historical data application, please try shortYearCutoff: 0.

​http://jqueryui.com/demos/datepicker/#option-shortYearCutoff

[bombo]

Setting shortYearCutoff to 0 does not seem to do the trick. In fact it seems to result in some strange behavior in terms of emulating shortYearCutoff: 21 or something like that.

Here is a jsfiddle sample, reproducing said behavior:

​http://jsfiddle.net/bombo/47f7D/24/

Even when inputting 01/01/0001, the datepicker seems to store 01/01/2001 internally, as can be seen when doing so and pressing Show date.

[mikesherov]

confirmed on latest: ​http://jsfiddle.net/LgVqM/7/

[tj.vantoll]

#9488 is a duplicate of this ticket.

[tj.vantoll]

Test case from brunobg in #9488: ​http://jsfiddle.net/NYNCh/.

[tj.vantoll]

#9600 is a duplicate of this ticket.

[brunobg]

Sent a pull request with the fix: ​https://github.com/jquery/jquery-ui/pull/1142