From afbddc1bcde8543dee73a818c4a660e3116a7efe Mon Sep 17 00:00:00 2001
From: Keith Simmons <keith@zed.dev>
Date: Thu, 31 Mar 2022 18:22:55 -0700
Subject: [PATCH] Address panic when completions requested and returned to
 outdated buffer

---
 crates/project/src/project.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/crates/project/src/project.rs b/crates/project/src/project.rs
index 65c943c888247b5c02badc3e3b59c603f325a290..856405d620a0e00741b8e7976d4e560db6e3d6c5 100644
--- a/crates/project/src/project.rs
+++ b/crates/project/src/project.rs
@@ -2331,6 +2331,13 @@ impl Project {
                 };
 
             cx.spawn(|_, cx| async move {
+                let clipped_position = source_buffer_handle
+                    .read_with(&cx, |this, _| this.clip_point_utf16(position, Bias::Left));
+                if clipped_position != position {
+                    log::info!("Completion position out of date");
+                    return Ok(Default::default());
+                }
+
                 let completions = lang_server
                     .request::<lsp::request::Completion>(lsp::CompletionParams {
                         text_document_position: lsp::TextDocumentPositionParams::new(