SSH wrapper function that replaces uncommon TERM values with `xterm`

ssh.fish

# SSH wrapper function that replaces uncommon TERM values with `xterm`.
#
# The term values listed for override should be fully xterm compatible for this to work.
# Removes problems of unrecognised TERM when connecting to remote servers without having to install the appropriate terminfo.
function ssh
        if contains $TERM rxvt-unicode-256color
                env TERM=xterm ssh $argv
        else
                command ssh
        end
end