A language server question that finds nothing, cannot be answered or has no room fails, and so does a write to an image's or PDF's body

Callers or Callees with nothing found, Hover or Lspwhy with no room for its pane, and a question asked of no file's pane said nothing, the 9P write succeeding; a body write to an image or PDF pane went nowhere. A write that asks a language server now waits for its answer (turn.lsp_answers), and what fails there -- nothing found, no answer, a backend's @none why, a placement with no room (ENOSPC) -- fails the write and logs its err. No diagnostics is said, not failed.

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

1 files changed, 7 insertions, 1 deletions

diff --git a/src/9p_io.zig b/src/9p_io.zig
index 72897979..96f91bc1 100644
--- a/src/9p_io.zig
+++ b/src/9p_io.zig
@@ -312,13 +312,19 @@ pub const Listener = struct {
         defer if (restoring) l.restore_writer.store(false, .release);
         core.fs.late_failure_len = 0;
         if (core.effects_len != 0) pardes.turn.awaitSettled(epoch);
+        if (core.fs.lsp_answer_at) |n| {
+            core.fs.lsp_answer_at = null;
+            pardes.turn.awaitLsp(n);
+        }
         // ponytail: one slot, so a failure of another client's effects that
         // settle in the same wait is told to this write too.
         if (l.core == core and core.fs.late_failure_len != 0) {
             const late = core.fs.late_failure[0..core.fs.late_failure_len];
             // What is not there (`no such directory`) is ENOENT, as a
             // builtin's failure saying so is (ctl.failureErrno).
-            const errno = if (std.mem.indexOf(u8, late, "no such") != null or std.mem.indexOf(u8, late, "not found") != null) pardes.ctlfs.E.NOENT else pardes.ctlfs.E.IO;
+            const errno = if (std.mem.indexOf(u8, late, "no such") != null or std.mem.indexOf(u8, late, "not found") != null)
+                pardes.ctlfs.E.NOENT
+            else if (std.mem.indexOf(u8, late, "no space") != null) pardes.ctlfs.E.NOSPC else pardes.ctlfs.E.IO;
             const failed = pardes.ctlfs.failText(req.tag, errno, late);
             // Its err record says it (the path in it); the msg the failure
             // was also said as goes, as a builtin's failing a write does.