Question about üarent-frame changes

[Gerd Möllmann]

Hi Martin,

I came across another question today. Maybe you can help me with this.
It's actually not very technical, more a question if and how something
is used today, or how important it is supporting it on ttys.

I'm talking about changing the parent-frame of a frame.

AFAICT from the Elisp Info docs, one is currently free to change the
parent-frame as one sees fit. That is, one can make a child a root
frame, a root frame a child, or change the parent of a child to another
root.

I'm currently inclined to disallow parent-frame changes on ttys
entirely, unless it is used for something. Couldn't find something
today, but maybe something is a package outside Emacs' repo, or I'm just
ont looking for the right thing.

WDYT?