It's been a number of years, and all I really remember is coming to the conclusion that "emacsclient only works with a local server." It uses a domain socket for this, but forwarding that from a remote server doesn't seem to be enough.
Simply editing a remote file over an ssh connection is easy enough using TRAMP, but that isn't the same as accessing existing buffers in a remote server.
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It's been a number of years, and all I really remember is coming to the conclusion that "emacsclient only works with a local server." It uses a domain socket for this, but forwarding that from a remote server doesn't seem to be enough.
Simply editing a remote file over an ssh connection is easy enough using TRAMP, but that isn't the same as accessing existing buffers in a remote server.