Re: "Final" version of tty child frames

[Jared Finder]

On 2024-12-11 01:39, martin rudalics wrote:

> If you have the time, please also try to look into two issues I raised
> earlier:
>
>   Two further things I noticed: When point in the parent frame is
>   effectively hidden by the child frame, its cursor sometimes appears 
> at
>   the right of the child frame and sometimes it's not shown.  I have 
> not
>   understood the underlying principle for this behavior.  Also when the
>   selected region in the parent frame is active, its overlay covers the
>   child frame.  That's ugly.

TTY child frame cursors behave even worse under GPM and a TERM=linux 
terminal.  In this case, the cursor ends up on some lines always 
appearing at the end of lines (ignoring separate frames or windows) and 
sometimes in the right place.  The point position is correct though and 
the cursor does appear correctly once I start pressing simple keys like 
'A'.

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.

  -- MJF