vim-patch:7.4.1988

Problem:    When updating viminfo with file marks there is no time order.
Solution:   Remember the time when a buffer was last used, store marks for
            the most recently used buffers.
ab9c89b68d

As this is a viminfo fix, most of this is irrelevant - the patch has
just been brought across for the creation and updating of buffer's
`b_last_used` properties.

src/nvim/normal.c

@@ -1260,6 +1260,8 @@ static void normal_redraw(NormalState *s)
     maketitle();
   }
 
+  curbuf->b_last_used = time(NULL);
+
   // Display message after redraw. If an external message is still visible,
   // it contains the kept message already.
   if (keep_msg != NULL && !msg_ext_is_visible()) {