29 Apr
2026
29 Apr
'26
2:31 p.m.
On Wed, 29 Apr 2026 at 13:04, Nicolas Cedilnik <nicoco(a)nicoco.fr> wrote:
What sort of control characters?
As far as I know, GC3 has no published specification and is not an XSF
activity; I've avoided that name to (hopefully) avoid confusion with it.
Dave.
Hi,
It'll certainly be doing resourceprep.
Is that referring to clients and servers still
relying on resourceprep
when the RFC is clear that resource is a PRECIS OpaqueString
Is that supposed to
allow all emojis? If the lib I use says đ is
forbidden, is it because it does resourceprep instead of doing PRECIS? đ
(which has
almost no limitations other than forbidding control
characters, which seems sensible for nicknames).
I am not saying we should, but
FWIW discord and telegram (maybe other
networks too) do allow control characters in nicknames.
XEP-0172 MUC
support removed in version 1.1 of that XEP but still used
in the wild by some clients, notably Jitsi Meet)
Some other implementations I know of that use XEP-0172:
- Cheogram <https://wiki.soprani.ca/CheogramApp/Nickname>
- Slidge (compatible with Cheogram to encode nicknames that are not
valid resource parts â at least according to the libs I have used, cf
above)
- Maybe gajim some day if I ever find the energy to rebase and finish
<https://dev.gajim.org/gajim/gajim/-/merge_requests/999>
Now, the question that has been burning my lips: is "New MUC" the new
codename of "GC3" or are those supposed to be different things?