I know about kak.connect.
But is there another way to send a file to a specified session or client (from a terminal that hasn't been started by kak)?
Or send a file / buffer from one client to another?
Look at the [Commands] implementation and [Interfacing] from Kakoune.
echo "evaluate-commands -client $kakoune_client_name edit $filename" | kak -p $kakoune_session_name ?
I knew I'd answered that question already!
Dupe #3534
this is great, thanks!