Re: "Final" version of tty child frames

[Gerd Möllmann]

Jared Finder <jared@finder.org> writes:

> Unfortunately, the redisplay code in Emacs is super hard for me to
> understand and I can't figure out where or how the cursor gets
> positioned.  If someone could give me some pointers here, I'd love to
> investigate further.

I think you want to take a look at dispnew.c, functions
combine_updates_for_frame, and there at this part

  /* If a child is displayed, and the cursor is displayed in another
     frame, the child might lay above the cursor, so that it appears to
     "shine through" the child.  Avoid that because it's confusing.  */
  if (topmost_child)
    terminal_cursor_magic (root, topmost_child);
  flush_terminal (root