Both Left and Right Control are identified as Left Control.

[error404seeker]

This is causing problem as there is some difference in left and right control press in neovim.

[rvaiya]

This is by design, please read the layers section of the man page.

there is some difference in left and right control press in neovim.

The terminal should not be able to distinguish between right and left control. Can you elaborate on this?

[error404seeker]

in Neovim(Lazyvim), when I press Left Control in insert mode, it goes back to Normal Mode. When I press Right control, it doesn't change anything. I use kitty and have confirmed it by disabling keyd. When I use keyd, both left and right control change from insert mode to normal mode.

[rvaiya]

Have you remapped something? As a rule, terminals do not distinguish between right and left modifiers, they are stored as a bitmask. Kitty seems to have some new keyboard protocol, but that is not natively supported by any application I am aware of. It is possible that lazyvim uses this protocol to distinguish between right and left control, but I cannot find this documented anywhere.

In any case, I very much doubt left control is mapped to escape in lazyvim (it certainly isn't in neovim), since this would make default behaviour dependent on kitty's proprietary protocol (the vast majority of terminals will just flip a bit, which does not allow the program to distinguish between right and left control).

[victor-gaganov]

I am facing the same issue. My RDP client (remmina) uses Ctrl_R + F4 to close connection to remote host. There are many pieces of software that do different things depending on Left/Right Ctrl or Alt. If you want an easy reproducer take a look at Via key tester (https://www.caniusevia.com/). Even the online version detects that Right Ctrl sends Left Ctrl (https://www.usevia.app/). After I stop keyd service, key tester starts detecting Right Ctrl again.

OS: Ubuntu 20.04

Config:

[ids]

[main]
capslock = layer(nav)
\ = layer(nav)

[nav]
j = left
i = up
k = down
l = right
u = C-left
o = C-right
y = pageup
h = pagedown
m = C-pageup
. = C-pagedown
, = delete
p = home
; = end
4 = =
r = )
f = ]
v = |
3 = +
e = (
d = [
c = }
2 =
w = -
s = _
x = {

I hope this can get fixed. I loved keyd for simple config format and nice systemd integration. But this is a serious issue for me.....

[rvaiya]

@victor-gaganov

If you aren't aware, you can already remap any key to rightcontrol just like any other keycode. The present issue concerns the default mapping of both left and right control to layer(control) which is a modifier layer defined as control:C. Changing this has been discussed before, and has a few downstream consequences.

If you really need rightcontrol to be available, you can just do rightcontrol = rightcontrol in the worst case, though my recommendation would be to bind the sequence of interest to a macro inside of a layer (e.g macro(rightcontrol+f4)).

[victor-gaganov]

I was not aware of this. For me, this fix works. Thank you! I added rightcontrol = rightcontrol to my main layer and all software that has different behavior started to work.