notify-send -h string ignored

[Kommynct]

I use

notify-send -h string:x-canonical-private-synchronous:sink-state

to make a notification overwrite a different notification, it appears this flag in notify-send is ignored.

[Toqozz]

I'm not familiar with that hint. It seems to be a non-standard hint used by notify-osd in Ubuntu, which I'd rather not support unless it's super useful in some way. Can you elaborate on why you can't use other mechanisms like the replace-id or tags (https://github.com/Toqozz/wired-notify/wiki/Useful-tools-to-help-you-do-things-with-Wired#notification-tags)?

[Toqozz]

Some more notes on this hint: https://gitlab.freedesktop.org/xdg/xdg-specs/-/issues/77

Annoyingly it may be one of those things that "everybody else is doing" so now we might want to do it too.