tty

func Open ¶

func Open() *os.File

Open opens the controlling terminal of the current process for reading and writing. Returns nil when no controlling terminal is available (CI, detached session, no-TTY environments).

Used as a fallback when parent stdio is not a terminal (e.g. old-wrapper invocation where stdout is captured by a subshell). Note: Bun-compiled agents on macOS reject /dev/tty-opened fds for TTY stream construction; callers should prefer inheriting parent stdio directly when it is already a terminal.