A refused Putall is answered once the other saves have landed; a bad Tab width is invalid (EINVAL), from a pane's exec too; Incl refuses a relative or missing directory and takes - only alone

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

1 files changed, 14 insertions, 3 deletions

diff --git a/src/9p_io.zig b/src/9p_io.zig
index 671a1852..46bbb2ba 100644
--- a/src/9p_io.zig
+++ b/src/9p_io.zig
@@ -316,9 +316,20 @@ pub const Listener = struct {
         // mount: 9ns answers nothing else on it while a clunk is out, and
         // the editor's step may be out opening a file through that mount.
         if (fills) return conn.reply(&reply, core.fsPayload(reply));
-        // A refusal answers at once: its text may be in the core's one
-        // buffer for it, which a request run while this one waited would
-        // write over.
+        // A refusal that left saves going (Putall's one refused among the
+        // rest) is answered once they have landed, its words copied out of
+        // the core's one buffer for them, which a request run meanwhile
+        // could write over.
+        if (reply.status == .err and core.effects_len != 0 and !core.quit) {
+            var kept: [320]u8 = undefined;
+            const words = kept[0..@min(reply.ename.len, kept.len)];
+            @memcpy(words, reply.ename[0..words.len]);
+            var waited = reply;
+            waited.ename = words;
+            pardes.turn.awaitSettled(epoch);
+            return conn.reply(&waited, "");
+        }
+        // Any other refusal answers at once, for the same buffer's sake.
         if (reply.status == .err) return conn.reply(&reply, "");
         // A write that quits the editor (Kill) is answered now: the editor
         // is on its way out and will settle nothing this could wait for,