Expected behavior when no config files exist

[verdverm]

What is the expected behavior when neither of the identity files exist?

It seems that the NonExist errors are ignored and a default value is returned.

I'm trying to build some auth with fallback and the lack of error means I have to be aware of what files you are checking and make sure they don't exist.

From https://pkg.go.dev/github.com/kevinburke/ssh_config#GetStrict

The returned error will be non-nil if and only if a user's configuration file or the system configuration file could not be parsed, and u.IgnoreErrors is false.

I would expect that if neither file is found, then it should "fail to parse" and I would get an error.

Could we add some logic to https://github.com/kevinburke/ssh_config/blob/v1.1.0/config.go#L247 to return an error when both methods fail to find a file to parse?

[Dentrax]

Just hit this issue:

open ~/.ssh/identity: no such file or directory

Since I'm not so familiar with the library, what would you recommend instead of this: ssh_config.Get(host, "IdentityFile")?

The following simply works:

ssh -F ./my-ssh-config my-user

$ cat my-ssh-config
Host colima
  IdentityFile "/Users/furkan/.lima/_config/user"
  StrictHostKeyChecking no
  UserKnownHostsFile /dev/null
  NoHostAuthenticationForLocalhost yes
  GSSAPIAuthentication no
  PreferredAuthentications publickey
  Compression no
  BatchMode yes
  IdentitiesOnly yes
  Ciphers "^aes128-gcm@openssh.com,aes256-gcm@openssh.com"
  User lima
  ControlMaster auto
  ControlPath "/Users/furkan/.lima/colima/ssh.sock"
  ControlPersist 5m
  ForwardAgent yes
  Hostname 127.0.0.1
  Port 52253

cc @kevinburke