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, 3 insertions, 0 deletions

diff --git a/src/fs.zig b/src/fs.zig
index 5d7d68e8..5fd1fd4e 100644
--- a/src/fs.zig
+++ b/src/fs.zig
@@ -1308,6 +1308,9 @@ pub const Namespace = struct {
     header_held: bool = false,
     late_failure: [256]u8 = undefined,
     late_failure_len: u16 = 0,
+    /// A 9P write asked a language server something: the answer count it
+    /// waits to change (`turn.lsp_answers`), so its failure is the write's.
+    lsp_answer_at: ?u64 = null,
     /// The serial of the pane the root's exec or look last ran a line at
     /// (the keyboard's), 0 before one: its err record names that pane.
     ran_at: u32 = 0,