bittty

A pure Python terminal emulator.

Demo

Run the standalone demo:

python ./demo/terminal.py

Or use the textual demo to see it in a TUI:

uvx textual-tty

WTFPL with one additional clause

Do wtf you want, but don’t blame me when it rips a hole in your trousers.

🏃 more performance
🏗️ rewrite architecture
🐛 scroll region: scroll up in vim corrupts outside scroll region
🏃 squeeze another 15% performance out of it
✀ fix utf8 and escape code splitting across buffer boundaries
🪟 tests run on Windows runner
📉 added parser benchmarking and tui graphs
🐌 use regex for parsing to speed things up a tad (~2x faster)
📚 document half a billion DEC private modes we don’t support
🔙 DECLM - allow \n to act like \r\n so we don’t have to rely on cooked input on the pty when using as a library.
🖼️ DEC Special Graphics
🐌 Faster colour/style parser
⛓️‍💥 Split out from textual-tty into separate package

Wide characters, combining characters and grapheme clusters are treated as one cell.
Resizing is not atomic with concurrent PTY output.
There is no scrollback buffer or reflow on resize.