Fixed issue #84

Author: aryan-debug

strftime.js

@@ -649,7 +649,8 @@
                         // '70'
                         // case 'y':
                         case 121:
-                            resultString += ('' + date.getFullYear()).slice(padding === "" ? 3 : 2);
+                            let year_without_century = ('' + date.getFullYear()).slice(2)
+                            resultString += year_without_century.slice(padding === "" &&  year_without_century.charAt(0) === "0" ? 1 : 0);
                             break;
 
                         // '+0000'

test.js

@@ -101,6 +101,7 @@ assert.format('%L', '067');
 assert.format('%l', null, ' 6');
 assert.format('%-l', null, '6');
 assert.format("%-y", "1", null, new Date('2001-02-03T04:05:06'))
+assert.format("%-y", "23", null, new Date('2023-02-03T04:05:06'))
 assert.format('%_l', null, ' 6');
 assert.format('%0l', null, '06');
 assert.format('%M', null, '51');