From 01eb9a8236b9fbedc1018b0a8b219f46efb3401e Mon Sep 17 00:00:00 2001
From: Jin Liu <m.liu.jin@gmail.com>
Date: Thu, 30 Apr 2026 12:16:36 +0800
Subject: [PATCH] Reduce flickering on typing by reusing unchanged matches

---
 anyrun/src/plugin_box.rs | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/anyrun/src/plugin_box.rs b/anyrun/src/plugin_box.rs
index 3c7d3e5e..b09c26f7 100644
--- a/anyrun/src/plugin_box.rs
+++ b/anyrun/src/plugin_box.rs
@@ -242,10 +242,21 @@ impl FactoryComponent for PluginBox {
                 {
                     let mut guard = self.matches.guard();
 
-                    guard.clear();
-
-                    for _match in matches {
-                        guard.push_back((_match, self.config.clone()));
+                    let len_new_matches = matches.len();
+                    let len_old_matches = guard.len();
+                    let mut skipped = 0;
+
+                    while skipped < len_new_matches && skipped < len_old_matches {
+                        if guard[skipped].content != matches[skipped] {
+                            break;
+                        }
+                        skipped += 1;
+                    }
+                    while guard.len() > skipped {
+                        guard.pop_back();
+                    }
+                    for _match in matches.iter().skip(skipped) {
+                        guard.push_back((_match.clone(), self.config.clone()));
                     }
                 }
                 sender.output(PluginBoxOutput::MatchesLoaded).unwrap();