view a thread. This takes two steps:
1. Apply
-[this patch from Mark Walters](http://notmuchmail.org/pipermail/notmuch/2012/010817.html)
+[this patch from Mark Walters](https://notmuchmail.org/pipermail/notmuch/2012/010817.html)
to add the `notmuch-show-filter-thread` function.
1. Add the following hook to your emacs configuration: