emberjs/ember.js — pull request #992 by rlivsey (2012-06-12 15:46:24+00:00)
Title: Changing context in the current state should generate a new URL

if we're in /posts/1 and want the urlForEvent('showPost', {id: 2}) it should generate /posts/2, not stay in /posts/1

Here's a fiddle with an example of the issue this fixes: http://jsfiddle.net/rlivsey/MZFae/