From 6b46095980bf73512f5ed06d0659d263a4c990df Mon Sep 17 00:00:00 2001
From: Luna Razzaghipour <lunarazzaghipour@gmail.com>
Date: Sun, 28 May 2023 22:10:24 +1000
Subject: [PATCH] Make formatting a latency-sensitive request

---
 crates/rust-analyzer/src/main_loop.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs
index 34947fcd6f9..19c49a23000 100644
--- a/crates/rust-analyzer/src/main_loop.rs
+++ b/crates/rust-analyzer/src/main_loop.rs
@@ -695,6 +695,14 @@ fn on_request(&mut self, req: Request) {
             .on_latency_sensitive::<lsp_types::request::SemanticTokensRangeRequest>(
                 handlers::handle_semantic_tokens_range,
             )
+            // Formatting is not caused by the user typing,
+            // but it does qualify as latency-sensitive
+            // because a delay before formatting is applied
+            // can be confusing for the user.
+            .on_latency_sensitive::<lsp_types::request::Formatting>(handlers::handle_formatting)
+            .on_latency_sensitive::<lsp_types::request::RangeFormatting>(
+                handlers::handle_range_formatting,
+            )
             // All other request handlers
             .on::<lsp_ext::FetchDependencyList>(handlers::fetch_dependency_list)
             .on::<lsp_ext::AnalyzerStatus>(handlers::handle_analyzer_status)
@@ -730,8 +738,6 @@ fn on_request(&mut self, req: Request) {
             .on::<lsp_types::request::PrepareRenameRequest>(handlers::handle_prepare_rename)
             .on::<lsp_types::request::Rename>(handlers::handle_rename)
             .on::<lsp_types::request::References>(handlers::handle_references)
-            .on::<lsp_types::request::Formatting>(handlers::handle_formatting)
-            .on::<lsp_types::request::RangeFormatting>(handlers::handle_range_formatting)
             .on::<lsp_types::request::DocumentHighlightRequest>(handlers::handle_document_highlight)
             .on::<lsp_types::request::CallHierarchyPrepare>(handlers::handle_call_hierarchy_prepare)
             .on::<lsp_types::request::CallHierarchyIncomingCalls>(