emacs term mode (and many other terminals?) not supported

[PerBothner]

The claim "supports all UNIX terminals" should probably be changed to something like "supports most modern terminal emulators that use xterm-style escape sequences". I don't see anything in the code that checks the terminfo datebase so unless I'm missing something there is no way crossterm can support older or more idiosyncratic terminals.

Specifically, I tried running nushell (which uses crossterm) under both term and ansi-term modes of the Emacs editor. It failed pretty badly. These modes implement a simple ansi/vtxxx-style terminal, and are admittedly very basic. However, readline, vim, and nested emacs work.

It's fine if you don't want to support older terminals, of course.