A command line runs as its own command pane unless it is clicked at a shell's prompt

A middle click, an exec write or a tag word that no builtin knows was typed
into some terminal for the pane's directory, sharing whatever state that
shell was in and answering nothing, so a misspelling vanished into a shell.
Now only a line clicked at an interactive terminal's prompt is typed there.
From anywhere else it runs as a command pane: a terminal whose child is
$SHELL -c the line in the pane's directory, full emulation, which shows its
output and then exit N from the host's reaping of the child, and stays. A
finished command pane is the next command's for its directory, which runs
below what it showed after a '% line' line (acme appends to +Errors and never
clears it, util.c:213); a running one gets a second pane. Kill ends a command
pane's whole process group, the log records run and exit, exec reads back the
command pane's serial, and a line is at most 1 KB, read off the pane as the
host forks rather than carried in every spawn effect. ttyForDir's search for
a free shell is gone. The goldens of chordcut, cmdword and layout-open change
where a file's exec now opens a command pane, and ttytaken is rewritten to
exec from the terminal itself; docs/open-questions.md records the decision.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/macos.zig b/src/macos.zig
index 7bfa6c49..97dab9a8 100644
--- a/src/macos.zig
+++ b/src/macos.zig
@@ -1280,8 +1280,14 @@ fn drainInbox(st: *State) bool {
             },
             .eof => |e| {
                 if (st.gens[e.pane] != e.gen) continue;
+                // Reaped here, its status kept, it is no shell to retire.
+                const status = if (st.ptys[e.pane]) |*pt| status: {
+                    const got = host_io.exitStatus(pt.pid, 100);
+                    if (got != null) pt.pid = 0;
+                    break :status got;
+                } else null;
                 reap(st, e.pane);
-                st.core.update(.{ .eof = .{ .pane = e.pane } });
+                st.core.update(.{ .eof = .{ .pane = e.pane, .status = status } });
             },
             .lsp_done => |d| {
                 st.core.update(.{ .lsp_resp = .{ .id = d.id, .rows = d.rows } });