From 12d38b1886b1e4a17d3bd018f028f7fa2b821229 Mon Sep 17 00:00:00 2001
From: Adam Parod <mystic414@gmail.com>
Date: Thu, 17 Feb 2011 15:17:40 -0600
Subject: [PATCH] Datepicker: Reformat minDate/maxDate when dateFormat changes.
 Fixes #7009 - Reformat minDate/maxDate when dateFormat changes. (cherry
 picked from commit 74b7c3f684f5d83effcee6d5099c6fffb020fdf9)

---
 ui/jquery.ui.datepicker.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ui/jquery.ui.datepicker.js b/ui/jquery.ui.datepicker.js
index c23984530..8dd9bf3dc 100644
--- a/ui/jquery.ui.datepicker.js
+++ b/ui/jquery.ui.datepicker.js
@@ -444,7 +444,14 @@ $.extend(Datepicker.prototype, {
 				this._hideDatepicker();
 			}
 			var date = this._getDateDatepicker(target, true);
+			var minDate = this._getMinMaxDate(inst, 'min');
+			var maxDate = this._getMinMaxDate(inst, 'max');
 			extendRemove(inst.settings, settings);
+			// reformat the old minDate/maxDate values if dateFormat changes and a new minDate/maxDate isn't provided
+			if (minDate !== null && settings['dateFormat'] !== undefined && settings['minDate'] === undefined)
+				inst.settings.minDate = this._formatDate(inst, minDate);
+			if (maxDate !== null && settings['dateFormat'] !== undefined && settings['maxDate'] === undefined)
+				inst.settings.maxDate = this._formatDate(inst, maxDate);
 			this._attachments($(target), inst);
 			this._autoSize(inst);
 			this._setDateDatepicker(target, date);