TRAMP remote buffers aren’t a huge issue on disconnection because the buffer contents are stored locally: TRAMP’s magic mostly occurs on open and save. Unfortunately, your modew like eglot have to be TRAMP-aware and execute over a ssh connection somehow. Many LSP servers use stdio communication, so it should be possible to put together a mode hook that detects if the buffer file name is a TRAMP file name and then does something like `ssh remotehost -- cd /project/root ‘&&’ clangd --stdio`