I started writing a FUSE fs specifically for this (and other fun dynamic .ssh/ things), but never got round to finishing it off. The wildcard and (very recent)

I started writing a FUSE fs specifically for this (and other fun dynamic .ssh/ things), but never got round to finishing it off. The wildcard and (very recent) .d support has mostly solved the need now, unless I can remember what exactly it was I couldn't get it to do before.