bug#30141: 26.0.91; text-pixel dimensions not properly saved by desktop-save-mode sometimes

[martin rudalics]

> The code I introduced in 804b37ca63 to save and restore text-pixel dimensions 
appears
> to be flaky because I do not always set the frame parameter
> frameset--text-pixel-height, so it occasionally keeps the old value if
> you size from a pixel size to a non-pixel size.

Can you please give a more detailed scenario of what happens in
practice.  Is this prevalence of pixel sizes something which occurs
after the frameset was restored or already during restoration?

> Is it better to set that to nil every time

It shouldn't harm to do that.

> or is there some code that is
> missing that is meant to clear that frame parameter after restoring the 
desktop?

We probably should add code to reset all frame parameters installed by
`frameset--record-relationships' after the frameset has been restored.

BTW I've never been able to understand why we don't have code to
remove frame and window parameters.  'frameset--' parameters are just
gruft for the following session IIUC.

martin