😏

tests/helpers/tui_probe_launcher.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+"""Enter an allocated pseudo-terminal and invoke the real MMO TUI launcher."""
+
+from __future__ import annotations
+
+import fcntl
+import json
+import os
+import sys
+import termios
+
+from mmo_runtime import launch_interactive
+
+
+def main() -> int:
+    try:
+        # Popen(start_new_session=True) made this process a session leader. The
+        # slave PTY descriptors were inherited, so explicitly claim the terminal
+        # before MMO performs normal foreground process-group handoff.
+        fcntl.ioctl(sys.stdin.fileno(), termios.TIOCSCTTY, 0)
+        os.tcsetpgrp(sys.stdin.fileno(), os.getpgrp())
+        initial = termios.tcgetattr(sys.stdin.fileno())
+        exit_code = launch_interactive(profile=sys.argv[1], cwd=sys.argv[2])
+        restored = termios.tcgetattr(sys.stdin.fileno())
+        print(
+            json.dumps(
+                {
+                    "event": "launcher_returned",
+                    "exit_code": exit_code,
+                    "echo_enabled": bool(restored[3] & termios.ECHO),
+                    "attributes_restored": restored == initial,
+                    "pgrp": os.getpgrp(),
+                    "foreground_pgrp": os.tcgetpgrp(sys.stdin.fileno()),
+                },
+                sort_keys=True,
+            ),
+            flush=True,
+        )
+        return exit_code
+    except BaseException as exc:
+        print(json.dumps({"event": "launcher_error", "error": repr(exc)}), flush=True)
+        return 97
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())