/**
 * Similar to the Date (dd/mm/YY) data sorting plug-in, this plug-in offers 
 * additional  flexibility with support for spaces between the values and
 * either . or / notation for the separators.
 *
 * Please note that this plug-in is **deprecated*. The
 * [datetime](//datatables.net/blog/2014-12-18) plug-in provides enhanced
 * functionality and flexibility.
 *
 *  @name Date (dd . mm[ . YYYY]) 
 *  @summary Sort dates in the format `dd/mm/YY[YY]` (with optional spaces)
 *  @author [Robert Sedovšek](http://galjot.si/)
 *  @deprecated
 *
 *  @example
 *    $('#example').dataTable( {
 *       columnDefs: [
 *         { type: 'date-eu', targets: 0 }
 *       ]
 *    } );
 */

jQuery.extend( jQuery.fn.dataTableExt.oSort, {
	"date-eu-pre": function ( date ) {
		date = date.replace(" ", "");
		var eu_date, year;
		
		if (date == '') {
			return 0;
		}

		if (date.indexOf('.') > 0) {
			/*date a, format dd.mn.(yyyy) ; (year is optional)*/
			eu_date = date.split('.');
		} else {
			/*date a, format dd/mn/(yyyy) ; (year is optional)*/
			eu_date = date.split('/');
		}

		/*year (optional)*/
		if (eu_date[2]) {
			year = eu_date[2];
		} else {
			year = 0;
		}

		/*month*/
		var month = eu_date[1];
		if (month.length == 1) {
			month = 0+month;
		}

		/*day*/
		var day = eu_date[0];
		if (day.length == 1) {
			day = 0+day;
		}

		return (year + month + day) * 1;
	},

	"date-eu-asc": function ( a, b ) {
		return ((a < b) ? -1 : ((a > b) ? 1 : 0));
	},

	"date-eu-desc": function ( a, b ) {
		return ((a < b) ? 1 : ((a > b) ? -1 : 0));
	}
} );

@@ -800,29 +800,8 @@
 %22);%0A
-%09%09var eu_date, year;%0A
 %09%09%0A%09
@@ -809,18 +809,16 @@
 if (
+ ! 
 date 
-== ''
 ) %7B%0A
@@ -841,193 +841,24 @@
 %0A%0A%09%09
-if (date.indexOf('.') %3E 0) %7B%0A%09%09%09/*date a, format dd.mn.(yyyy) ; (year is optional)*/%0A%09%09%09eu_date = date.split('.');%0A%09%09%7D else %7B%0A%09%09%09/*date a, format dd/mn/(yyyy) ; (year is optional)*/%0A%09%09%09
+var year;%0A%09%09var 
 eu_d
@@ -878,17 +878,20 @@
 lit(
-'/');%0A%09%09%7D
+/%5B%5C.%5C-%5C/%5D/);
 %0A%0A%09%09
@@ -916,16 +916,17 @@
 /%0A%09%09if (
+ 
 eu_date%5B
@@ -927,16 +927,17 @@
 _date%5B2%5D
+ 
 ) %7B%0A%09%09%09y
@@ -957,17 +957,19 @@
 %5B2%5D;%0A%09%09%7D
- 
+%0A%09%09
 else %7B%0A%09
@@ -1029,16 +1029,17 @@
 ;%0A%09%09if (
+ 
 month.le
@@ -1043,24 +1043,25 @@
 .length == 1
+ 
 ) %7B%0A%09%09%09month
@@ -1117,16 +1117,17 @@
 ;%0A%09%09if (
+ 
 day.leng
@@ -1133,16 +1133,17 @@
 gth == 1
+ 
 ) %7B%0A%09%09%09d

Update - Sorting: Add `-` as a seperator for eu dates