Feature request: Allow static Window title prefix with templating

[albertdev]

I know that you can change the window title using Window > Behaviour | Window title, but this field is either static (when Terminal > Features | Disable remote-controlled window title changing is checked) or replaced all the time by a remote escape code.

The problem is, I want to have full domain names in my window title somewhere and yet keep the remotely-controlled title somewhere, but I don't want to have to change the PROMPT_COMMAND on every single host I connect to so that it contains the right information.

Is it thus possible to have a part of the window title which is never updated by the host? Preferably it should have the templates as used in KiTTY's window title so a default template string can be stored in the default profile, though just having a static string per saved session would also work for a start.