Re: Q: child frames on ttys

[Dmitry Gutov <dmitry@gutov.dev>]

On 31/08/2024 09:45, Eli Zaretskii wrote:
>> Date: Sat, 31 Aug 2024 00:11:10 +0300
>> From: Dmitry Gutov <dmitry@gutov.dev>
>>
>> On 17/08/2024 10:24, Gerd Möllmann wrote:
>>> I'm asking because I'm in the process of switching to tty Emacs on
>>> macOS, and the only thing I'm missing it seems is child frames, for
>>> Corfu, Vertico, and Transient, in my case, the latter two via Posframe.
>>
>> Off topic (sorry), but I wish someone worked on child frames looking
>> better under GNOME/Linux.
>>
>> When I test it on macOS, it seems regular, but under GNOME it swiftly
>> blinks once every refresh. Something to do with double buffering, maybe.
> 
> Do you mean that disabling double-buffering stops the blinking?

Unfortunately no (I just retested with --with-xdbe=no). Just that the 
issue looks like something that stems from insufficient synchronization 
in the graphical system (inconsistent states being displayed).

To clarify, here's a video with Company popup - first (20s) with 
company-posframe-mode being on - then with it off (next 15s), and then 
again with company-posframe-mode on. That mode switches the popup 
rendering to use child frames instead of overlays. The minibuffer got 
cropped out, so the mode switching looks just like a pause when 
nothing's happening.

https://imgur.com/a/moGloQP

FWIW, I'm seeing the same issue with Corfu, so it doesn't seem to be 
specific to Company or Posframe.