A pane closed with its question standing logs answer <serial> -

A follower that saw ask never heard the question end when its pane closed
first. Retiring a pane with a question still up now logs answer <serial> -
before its del.

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

3 files changed, 18 insertions, 1 deletions

diff --git a/docs/fs.md b/docs/fs.md
index d8080e1c..64f10e21 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -611,7 +611,7 @@ since a terminal is named by its directory), `exit <serial> <N>` before
 the `del` of a terminal whose shell exited by itself, `ask <serial> <what>
 <choices>` when a pane asks a question (answered by `answer` on its ctl),
 `answer <serial> <choice|->` when it is answered, by key or ctl, `-` for
-taken back,
+taken back or for its pane closing with the question standing,
 and `save <serial> <name>`,
 `dump <path>` when a Dump is written and `restore <path>` in a Restore's
 new log after its panes' `new`s, then `restored <old> <new>` for each pane,
diff --git a/src/ninep/events.zig b/src/ninep/events.zig
index 2112110a..61aadae2 100644
--- a/src/ninep/events.zig
+++ b/src/ninep/events.zig
@@ -122,6 +122,12 @@ pub fn noteRetire(p: *Pardes, pane: *Pane) void {
         pane.fs.unannounced = false;
         return;
     }
+    // A question still standing ends with it, so a follower of its `ask`
+    // hears the end.
+    if (pane.prompt == .repl_choice or pane.prompt == .del_side) {
+        var rec: [32]u8 = undefined;
+        notePath(p, "answer", std.fmt.bufPrint(&rec, "{d} -", .{pane.serial}) catch "");
+    }
     noteLog(p, .del, pane);
 }
 
diff --git a/src/pardes.zig b/src/pardes.zig
index da9889ff..f55654b6 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -7096,6 +7096,17 @@ test "Del from a key asks which neighbour takes the rows; nothing else asks" {
         try std.testing.expectEqual(ctlfs.Status.ok, th.wr(p, ctl, "answer -\n").reply.status);
         try std.testing.expect(p.panes[asked] != null and p.panes[asked].?.prompt == .none);
         try std.testing.expect(th.logHas(p, try std.fmt.bufPrint(&want, "answer {d} -\n", .{serial})));
+        // A pane closed while its question stands ends the question in the log.
+        p.newScratchBelow(top);
+        const closing = p.active;
+        p.sync();
+        const closing_serial = p.panes[closing].?.serial;
+        p.update(.{ .key = .{ .cp = ' ' } });
+        p.update(.{ .key = .{ .cp = 'd' } });
+        try std.testing.expectEqual(Pane.Prompt.del_side, p.panes[closing].?.prompt);
+        try p.removePane(closing, null);
+        try std.testing.expect(th.logHas(p, try std.fmt.bufPrint(&want, "answer {d} -\ndel {d}", .{ closing_serial, closing_serial })));
+        p.active = asked;
         p.update(.{ .key = .{ .cp = ' ' } });
         p.update(.{ .key = .{ .cp = 'd' } });
         try std.testing.expectEqual(ctlfs.Status.ok, th.wr(p, ctl, "answer k\n").reply.status);