a pretty mid terminal library

Midterm is a virtual terminal emulator. There is no GUI, but it has conveniences for rendering back to a terminal or to HTML.

Some examples:

• Progrock uses it for displaying progress logs.
• Dagger uses it for interactive shells, also rendered via Progrock.
• Bass uses it for rendering terminal output in its docs. (And also uses Progrock.)

• Compatibility with everyday tools like htop and vim.
• Good enough performance, though optimizations haven't been sought out yet so there's probably some low hanging fruit.
• Composability/versatility, e.g. forwarding OSC requests/responses between an outer terminal and a remote shell in a container.
• Anything you'd expect for interactive shells: full mouse support, 256 colors, copy/paste, etc. - though there's no GUI so this really just amounts to forwarding ANSI sequences between local/remote shells.

This is not a GUI terminal emulator intended for everyday use. It's all in-memory. If you want to wrap it in a GUI, feel free!

Right now it's used for rendering terminals embedded in other TUIs (Progrock), and for rendering terminal output in documentation.

It used to be called vt100, but then I added support for things beyond vt100 like scroll regions, and I don't want to keep renaming it.

I went with midterm because this library often sits in between a local and remote terminal (e.g. dagger shell), so it's a middle terminal. :man_shrugging:

Based on tonistiigi/vt100 which was was based on jaguilar/vt100.