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maestro/crates
naps62-yoloandClaude Opus 4.7 7814ca99de
ci / rust (push) Failing after 1m45s
fix(maestro): chain pipe-pane into new-session so initial output isn't lost (NAP-253)
`SessionManager::create` used to call `tmux new-session` (which exec's the
user's command immediately), run an async `PtyBridge::start_with_replay`
(mkfifo + open + spawn reader), then issue a *separate* `tmux pipe-pane`.
Any output the child wrote between exec and that third tmux subprocess
landing went into the pane but never into the FIFO. Hit in NAP-252
dogfood: `bash -c 'echo X; exec bash'` sessions showed only the trailing
prompt, never the X.

Two changes:

1. New `Tmux::new_session_piped(id, cwd, cmd, sink)` chains
   `; pipe-pane -t maestro-<id> <sink>` into the same tmux command argv
   as `new-session`. Within a tmux command chain, `pipe-pane` is
   processed immediately after `new-session` returns — before the child
   has finished `execve` — so the FIFO is wired up before the first
   write.
2. `SessionManager::create` now builds the FIFO + reader task **before**
   spawning the session, then calls `new_session_piped` instead of the
   two-step `new_session` + `pipe_pane`.

`Tmux::pipe_pane` and the standalone `Tmux::new_session` stay around —
`recover()` (NAP-228) still needs a standalone pipe-pane re-attach, and
some integration tests want a bare session without a pipe.

Tests:
- Unit: argv assertion that the chained `pipe-pane` follows `new-session`
  when a sink is supplied.
- Integration: `create_captures_initial_output_in_replay_buffer` spawns
  `sh -c 'echo NAP_253_FIRST_LINE_MARKER; exec sleep 30'` and polls
  `subscribe_pty_with_replay` until the marker shows up in the replay
  buffer (or fails after 5s). Fails before the fix, passes after.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-27 09:49:43 +00:00
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