So assume we have a patch file that fixes some whitespace.
You can see on line 18 and 19 here, it fixes the whitespace problem.
But then we notice on line 27 there's a similar problem that we missed.
So the first thing we want to do to get that new change inside the patch, is to go modify the file in question.
And we'll see on line 65, that's where the extra whitespace is again.
We'll just fix that problem, we'll save it, we'll quit.
And then we could use hg qnew here like we did in the last video,
but the problem with that is that it's going to create a second patch file.
What we really wanted to do is get the change inside the same patch file.
So to do that, it's pretty easy, all you have to do is type hg qref.
And that's for qrefresh.
And wait a couple of seconds.
And then we're just going to go open up that patch file again.
And you can see down here, it has the extra fix in it.
And that's all.