angular/angular.js — pull request #9406 by tbosch (2014-10-03 00:56:12+00:00)
Title: fix($browser): don’t use history api when only the hash changes

IE10/11 have the following problem: When changing the url hash
via `history.pushState()` and then reverting the hash via direct
changes to `location.href` (or via a link) does not fire a
`hashchange` nor `popstate` event.

This commit changes the default behavior as follows:
Uses `location.href`/`location.replace` if the new url differs from
the previous url only in the hash fragment or the browser
does not support history API.
Use `history.pushState`/ `history.replaceState` otherwise.

Fixes #9143