AFAIK, the remote applications simply do an isatty() check on the stdout and that's it; a proper terminal is then apparently expected to correctly skip and quie

AFAIK, the remote applications simply do an isatty() check on the stdout and that's it; a proper terminal is then apparently expected to correctly skip and quietly ignore any OSC sequence it does not understand. See the source of ls [0], for example. [0] https://github.com/coreutils/coreutils/blob/2a72cf1e9959f40bba5292a62174ff9c97d08671/src/ls.c#L2186 https://github.com/coreutils/coreutils/blob/2a72cf1e9959f40b...