Add space to SSH command to fix error when using -i option (#46)

* Add space to SSH command to fix error when using -i option

Using the `-i` option to supply a SSH key fails with the error 'Safety check failed - the destination does not appear to be a backup folder or drive (marker file not found).' This seems to be because of a missing space in the SSH parsing code which means that the key address and the SSH address get munged together. This pull request simply adds a space between them.

* add space elsewhere to make test pass

* oops

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Co-authored-by: Bas Nijholt <[email protected]>

Author: wragge

rsync_time_machine.py

@@ -220,7 +220,8 @@ def parse_ssh(
         ssh_user = ssh["user"] if ssh["user"] else ""
         ssh_host = ssh["host"]
         auth = f"{ssh_user}@{ssh_host}" if ssh_user else ssh_host
-        ssh_cmd = f"ssh -p {ssh_port} {'-i ' + id_rsa if id_rsa else ''}{auth}"
+        id_rsa_opt = f"-i {id_rsa} " if id_rsa else ""
+        ssh_cmd = f"ssh -p {ssh_port} {id_rsa_opt}{auth}"
 
         ssh_src_folder_prefix = f"{auth}:" if ssh_src else ""
         ssh_dest_folder_prefix = f"{auth}:" if ssh_dest else ""