getScript: error when get cached utf-8 js in gbk page on ie6

[yiminghe]

KISSY Version :

<=1.3

Browsers :

ie6

What steps will reproduce the problem?

1. prepare utf-8 script x.js

      KISSY.log('测试');
      window.x++;

2. get the same script twice in gbk page

         window.x=0;
         var js='../specs/getScript/x.js';
         S.getScript(js, {
             charset: 'utf-8',
             success: function () {
                 expect(window.x).toBe(1);
                 setTimeout(function () {
                     S.getScript(js, {
                         charset: 'utf-8',
                         success: function () {
                             expect(window.x).toBe(2);
                             ok = 1;
                         }
                     });
                 }, 500);
             }
         });

Expected

window.x==2

actual

window.x==1; error occurs.
#1.3 workaround

KISSY.config('tag',KISSY.now()); 测试环境永不缓存

线上代码要压缩