Apple's container exec --interactive --tty does not put the host
terminal into raw mode before starting its I/O relay. In cooked
(canonical) mode the kernel line discipline buffers modifier-key
escape sequences — e.g. Shift+Enter in modifyOtherKeys mode generates
\x1b[13;2~ — until a carriage-return arrives, so they never reach
Claude Code inside the container.
Add pty_forward.py, a stdlib-only wrapper (modelled on the existing
smolmachines pty_resize.py) that sets the host terminal to raw mode
via tty.setraw(), spawns the container exec command, and restores the
original terminal attributes on exit. Falls back to a bare
subprocess.run when stdin is not a TTY (piped invocations, CI) or
when termios operations fail.
Also retain the --env TERM=<host> forwarding from the previous commit:
without TERM inside the container session, Claude Code cannot determine
which modifier-key protocol to enable even with raw mode correctly set.
Non-TTY exec paths (bottle.exec, cp_in) are unaffected.
didericis-codex
didericis
didericis-claude