From bc5bebc5f8a9d98b55d6fdebdaf5652b2074bbea Mon Sep 17 00:00:00 2001
From: CrazyRoka <rokarostuk@gmail.com>
Date: Tue, 3 Feb 2026 22:25:11 +0000
Subject: [PATCH] perf(split): reuse buffer in chunked splitting loop

---
 src/uu/split/src/split.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/uu/split/src/split.rs b/src/uu/split/src/split.rs
index fcab096e2e0..d2d0d729de7 100644
--- a/src/uu/split/src/split.rs
+++ b/src/uu/split/src/split.rs
@@ -1156,9 +1156,10 @@ where
         out_files = OutFiles::init(num_chunks, settings, false)?;
     }
 
+    let buf = &mut Vec::new();
     for i in 1_u64..=num_chunks {
         let chunk_size = chunk_size_base + (chunk_size_reminder > i - 1) as u64;
-        let buf = &mut Vec::new();
+        buf.clear();
         if num_bytes > 0 {
             // Read `chunk_size` bytes from the reader into `buf`
             // except the last.