A prompt a 9P request opens is an ask, answered with answer, never stacked

Save through exec on a terminal (or a scratch) opened its path prompt on
screen, where no script could see or answer it, and a second Save stacked
another. Opened while a 9P request is served, it now logs ask <serial>
save path; answer <path> on the pane's ctl saves there and closes it,
answer - closes it; asked again, the open one stands. A pane closed with
it open logs answer <serial> -.

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

1 files changed, 13 insertions, 0 deletions

diff --git a/src/pardes.zig b/src/pardes.zig
index a55a22e0..7e426ba4 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -5386,7 +5386,9 @@ pub const Pardes = struct {
         p.needs_frame = true;
         p.raw_hover_intent = false;
         look.cancelLookHover(p);
+        p.fs.serving = true;
         const reply = ctlfs.handle(p, req);
+        p.fs.serving = false;
         if (reply.status == .err and (req.op == .write or req.op == .setattr or (req.op == .open and reply.errno == ctlfs.E.NOSPC) or (req.op == .release and req.remove))) ctlfs.events.noteError(p, req, reply);
         // The request was a whole step of its own, so it settles the way a
         // step does: the cursor and scroll reconciled, the scripted panes
@@ -5632,6 +5634,8 @@ pub const Pardes = struct {
         const asked = p.panes[id] orelse return null;
         switch (asked.prompt) {
             .del_side => return "k j",
+            // Any path; `-` takes it back.
+            .save => return "<path>",
             .repl_choice => {
                 const ask = p.repl_ask orelse return null;
                 var w = std.Io.Writer.fixed(buf);
@@ -5990,6 +5994,15 @@ pub const Pardes = struct {
             p.fs.refused = true;
             return;
         }
+        // Asked for over 9P (Save from an exec on a terminal): a question
+        // the log says, `ask <serial> save path`, answered on the pane's
+        // ctl with `answer <path>` or `answer -`; asked again, the one
+        // already open stands, not a second on top of it.
+        if (request == .save and p.fs.serving) {
+            if (pane.prompt == .save) return;
+            var rec: [32]u8 = undefined;
+            ctlfs.events.notePath(p, "ask", std.fmt.bufPrint(&rec, "{d} save path", .{pane.serial}) catch "");
+        }
         const marker = switch (request) {
             .search => |marker| marker,
             .save => config.save_marker,