fix(cli[load]): Add --detached to --here/--append mutual exclusion group

tony · tony · commit 92ba6f42df8a · 2026-03-22T20:25:01.000-05:00
--detached silently overrode --here (short-circuited in _dispatch_build
before reaching the here check). Now all three load modes (-d, -a/
--append, --here) are in the same argparse mutually exclusive group.
diff --git a/src/tmuxp/cli/load.py b/src/tmuxp/cli/load.py
@@ -898,13 +898,13 @@ def create_load_subparser(parser: argparse.ArgumentParser) -> argparse.ArgumentP
         action="store_true",
         help="always answer yes",
     )
-    parser.add_argument(
+    load_mode_group = parser.add_mutually_exclusive_group()
+    load_mode_group.add_argument(
         "-d",
         dest="detached",
         action="store_true",
         help="load the session without attaching it",
     )
-    load_mode_group = parser.add_mutually_exclusive_group()
     load_mode_group.add_argument(
         "-a",
         "--append",
diff --git a/tests/cli/test_load.py b/tests/cli/test_load.py
@@ -1485,3 +1485,21 @@ def test_load_here_and_append_mutually_exclusive() -> None:
     parser = create_parser()
     with pytest.raises(SystemExit):
         parser.parse_args(["load", "--here", "--append", "myconfig"])
+
+
+def test_load_here_and_detached_mutually_exclusive() -> None:
+    """--here and -d cannot be used together."""
+    from tmuxp.cli import create_parser
+
+    parser = create_parser()
+    with pytest.raises(SystemExit):
+        parser.parse_args(["load", "--here", "-d", "myconfig"])
+
+
+def test_load_append_and_detached_mutually_exclusive() -> None:
+    """--append and -d cannot be used together."""
+    from tmuxp.cli import create_parser
+
+    parser = create_parser()
+    with pytest.raises(SystemExit):
+        parser.parse_args(["load", "--append", "-d", "myconfig"])
