Build a Terminal Emulator in C

Terminals aren't magic — they're programs speaking Unix I/O, POSIX APIs, and ANSI escape codes. Build one from scratch: master file descriptors, ttys, and pseudoterminals; put a real device into raw mode; parse escape sequences with a state machine; decode keyboards and UTF-8; model the screen as a grid of cells and render it with minimal writes; then build a text editor on top — line buffers, viewports, atomic saves, search, and an event loop — and assemble it into a working editor you can actually live in.