fix(date filter): handle newlines in format string

Closes #15794

Author: ashsearle

src/ng/filter/filters.js

@@ -475,7 +475,7 @@ var DATE_FORMATS = {
      GGGG: longEraGetter
 };
 
-var DATE_FORMATS_SPLIT = /((?:[^yMLdHhmsaZEwG']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|L+|d+|H+|h+|m+|s+|a|Z|G+|w+))(.*)/,
+var DATE_FORMATS_SPLIT = /((?:[^yMLdHhmsaZEwG']+)|(?:'(?:[^']|'')*')|(?:E+|y+|M+|L+|d+|H+|h+|m+|s+|a|Z|G+|w+))([\s\S]*)/,
     NUMBER_STRING = /^-?\d+$/;
 
 /**

test/ng/filter/filtersSpec.js

@@ -504,6 +504,11 @@ describe('filters', function() {
       expect(date(morning, 'yy/xxx')).toEqual('10/xxx');
     });
 
+    it('should allow newlines in format', function() {
+      expect(date(midnight, 'EEE\nMMM d\'\n\'yy/xxx\n')).
+                      toEqual('Fri\nSep 3\n10/xxx\n');
+    });
+
     it('should support various iso8061 date strings with timezone as input', function() {
       var format = 'yyyy-MM-dd ss';