ssh) required -c supportWhen I attempted to create a shell and call it from ssh client or crypto/ssh.Session.Run this is what gets dumped for os.Args. This means that the Secure Shell protocol itself requires that any shell supporting it automatically support the -c argument. This is also how stdin is freed up to be passed in after the fact.
$ ssh -i testdata/blahpriv blah@localhost "echo" <<< hello
2022/12/14 05:42:00 [safesh -c echo]
$ ssh -i testdata/blahpriv blah@localhost "ls -ld"
2022/12/14 05:45:39 [safesh -c ls -ld]
$ ssh -i testdata/blahpriv blah@localhost 'ls -la'
["safesh" "-c" "ls -la"]
$ ssh -i testdata/blahpriv blah@localhost ls -la
["safesh" "-c" "ls -la"]
$ ssh -i testdata/blahpriv blah@localhost ls -la -t -p
["safesh" "-c" "ls -la -t -p"]