Comment 2 for bug 1020580

Once Errors understands query URLs, you can use pushState() or replaceState() (I'd suggest the latter) to change the URL whenever the filter values change. That way a value can be bookmarked, shared on IRC, etc without having to reload the page. <https://developer.mozilla.org/en-US/docs/DOM/Manipulating_the_browser_history#Adding_and_modifying_history_entries>