From 40c62cda5fff7833ef1e12129fc58d45ec0bff7e Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Thu, 6 Mar 2025 16:25:27 -0800
Subject: [PATCH] Fix early return when reaching end excerpt in
 `lift_buffer_metadata` (#26253)

Release Notes:

- Fixed a bug causing slowness when viewing multi buffers with lots of
excerpts
---
 crates/multi_buffer/src/multi_buffer.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crates/multi_buffer/src/multi_buffer.rs b/crates/multi_buffer/src/multi_buffer.rs
index b578acd303..1d7183532b 100644
--- a/crates/multi_buffer/src/multi_buffer.rs
+++ b/crates/multi_buffer/src/multi_buffer.rs
@@ -3830,6 +3830,11 @@ impl MultiBufferSnapshot {
             // When there are no more metadata items for this excerpt, move to the next excerpt.
             else {
                 current_excerpt_metadata.take();
+                if let Some((end_excerpt_id, _)) = range_end {
+                    if excerpt.id == end_excerpt_id {
+                        return None;
+                    }
+                }
                 cursor.next_excerpt();
             }
         })