Setting color scheme for a pane from Lua

[kontza]

Hi,

Is it possible to set pane's background color/color scheme from Lua?

[nekowinston]

Configuration can be overridden per-window, not per-pane; you can change the active color scheme based on which pane is focused, though. See #4260

[kontza]

Ok, thanks. I was just looking for an alternative way of changing pane background for SSH to a remote host. I know that I could do it so, that the remote end's bashrc etc would print out an ANSI escape codes to change colors, but I like my current setup where everything happens client side.

My current setup for changing pane background is as follows:

1. SSH config 'runs' a LocalCommand, a script that runs https://github.com/drinchev/phook to capture SSH's PID.
2. Then the script prints out an ANSI escape sequence based on the host where I'm connecting to. This sets the active pane's background color.
3. When SSH exists, i.e. connection closes, phook runs another script that restores the pane background to the default one.

The above works, but as it consists of multiple moving parts, I was looking for a way to have all this happen within Wezterm via Lua and events.

[wez]

Take a look a User Vars. https://wezfurlong.org/wezterm/recipes/passing-data.html#user-vars has some examples.
You could set a user var to specify some metadata per-pane, then apply that in the update-status event.

[kontza]

Ok, thanks. One, final, question: can Lua change the pane background color? Wezterm itself can do it, as I'm currently using OSC 1337 SetColors to set it. But is there an API in Lua-side for it?

[wez]

Configuration is per-window, rather than per-pane, so you can't set it via configuration from lua.
However, you can use https://wezfurlong.org/wezterm/config/lua/pane/inject_output.html to inject escape sequences into local (not multiplexer!) panes.

[kontza]

Ok, thanks. Juha R. pe 5.1.2024 klo 15.38 Wez Furlong ***@***.***> kirjoitti:

…

Configuration is per-window, rather than per-pane, so you can't set it via configuration from lua. However, you can use https://wezfurlong.org/wezterm/config/lua/pane/inject_output.html to inject escape sequences into *local* (not multiplexer!) panes. — Reply to this email directly, view it on GitHub <#4744 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AASRRCFTRAQFEWUK2VUV5L3YM765RAVCNFSM6AAAAABBLK4ERKVHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM4DAMRTGMYDG> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>

[kontza]

For anyone interested, this is what I finally came up with:
https://gist.github.com/kontza/7ee30f5ed7ae949e90bd03bc0d8bc63d