sshd: history and autocompletion keys don't work

[treeswift]

Actual:

• In an incoming session (-C cmd.exe) the up, down and tab keys result in escaped control characters added to the command line.

Expected:

• Up/down keys navigate the list of recently entered commands.
• The tab key auto-completes the command line (e.g. iterates over directory elements starting with a given typed prefix).

History and autocompletion hotkeys work correctly in an outgoing session.