Subscribe to Contour color palette update notifications

Open Vixb1122 opened this issue 2 months ago • 4 comments

Oct 22 '25 07:10 Vixb1122

Well, we can't just poll the terminal for its theme every time we render (too much traffic) and there's no event that we receive for when the theme changes. In my opinion, TUI applications are not supposed to handle this edge case.

Oct 22 '25 09:10 lhecker

Understand, this is not necessary.

Oct 22 '25 09:10 Vixb1122

@lhecker well, Contour implements something:

Send CSI ? 2031 h to the terminal to enable unsolicited DSR (device status report) messages for color palette updates and CSI ? 2031 l respectively to disable it again.

Oct 22 '25 16:10 DHowett

FYI, that Contour extension is quite widely used by TUI libraries and applications, and I think there are one or two more terminals supporting it that aren't currently listed in the adoption table. Windows Terminal has an open issue for it here: https://github.com/microsoft/terminal/issues/18375

Oct 22 '25 20:10 j4james