I don't know of any, but one thing you can do is split up your config into multiple files and then use `cat` to combine them after making a change. There's also

I don't know of any, but one thing you can do is split up your config into multiple files and then use `cat` to combine them after making a change. There's also https://github.com/markhellewell/sshconfigfs https://github.com/markhellewell/sshconfigfs