Is there a way to add a host to ssh_config with a rule that emulates the -t option in the ssh command?
Well, I searched the man pages and asked around a bit and it looks like your best option for doing this will be to define an alias for it or make a script. I also looked for some catch all command you can use in ssh_config to specify options that don't have config file equivalents and surprisingly, there isn't one. I downloaded the latest version of openssh and it looks like there isn't even any option for it there. So if its something you really need, I'd submit a bug/feature request over it because it really should be an option since nearly every other option has an config file command for it.