Is it possible not to push unnecessary state when clicking an <a> element?

[jiaoliao946]

Feature request

Problem or desire

I click an element which has the href just like the location.href when setting routerMode to "history", and then it pushes a new state which is not necessary.
It might be better to use history.back() than history.pushState() when clicking an element which has the href just like the location.href of the previous page in session history.

Proposal

Do nothing when clicking an element which has the href just like the location.href.
Use history.back() when clicking an element which has the href just like the location.href of the previous page in session history.

Implementation

Just change the onchange function to something like this:

e.prototype.onchange = function (i) {
        void 0 === i &&
        (i = d),
        p(
          'click',
          function (e) {
            var n = 'A' === e.target.tagName ? e.target : e.target.parentNode;
            n &&
            'A' === n.tagName &&
            !g(n.href) &&
            (
              e.preventDefault(),
              n = n.href,
              n === location.href ? 1 :      //Add
              n === hrefPre ? window.history.back() :      //Add(hrefPre is used to record the href before)
              window.history.pushState({
                key: n
              }, '', n),
              i({
                event: e,
                source: 'navigate'
              })
            )
          }
        ),
        p('popstate', function (e) {
          i({
            event: e,
            source: 'history'
          })
        })
      }