Ports the parts of Ghostty's IO layer that don't depend on the terminal:
- pty.zig: pty pair, window size, mode, child-side setsid/TIOCSCTTY;
master is CLOEXEC with IUTF8 set
- Command.zig: fork/execvpe with Ghostty's exact child setup (stdio
dup2, best-effort chdir, rlimit restore, os/runtime pre-exec hooks,
cgroup handling) and exit status decoding
- shell_integration.zig for bash/zsh/fish/elvish/nushell plus feature
flags; scripts copied verbatim to resources/shell-integration/
- terminfo generator for xterm-ghostty, byte-identical to Zig's encode
output (golden file produced with the real Zig code)
This crate opts into unsafe_code = "deny" (fork/exec need it) with
allow + SAFETY comments on minimal items.
Integration left: config-derived option types are local stand-ins;
cgroup D-Bus scope creation is a closure hook; Exec/Termio/Thread/
stream_handler wait for ghostty-terminal. Pty now closes both fds on
drop (Zig never auto-closed the slave) - to re-check when wiring Exec.
Test Plan:
- cargo test -p ghostty-termio (52 tests, incl. real pty spawn test
expecting "hi\r\n31 97\r\n" from `echo hi; stty size`)
ddidderr
59bc84fde0