From 4dc7c2a986a15c129aecccdea334108d8e1df06b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Kr=C3=A1l?= <tomas@kral.hk>
Date: Tue, 18 May 2021 18:31:17 +0200
Subject: [PATCH] add comment in expand_strip()

---
 src/decoder/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/decoder/mod.rs b/src/decoder/mod.rs
index 43dccb0..173c4d5 100644
--- a/src/decoder/mod.rs
+++ b/src/decoder/mod.rs
@@ -1136,7 +1136,10 @@ impl<R: Read + Seek> Decoder<R> {
                 DecodingBuffer::F64(buf) => bytecast::f64_as_ne_mut_bytes(buf),
             };
 
+            // Note that writing updates the slice to point to the yet unwritten part.
             std::io::copy(&mut reader.take(buffer.len() as u64), &mut buffer)?;
+
+            // If less than the expected amount of bytes was read, set the remaining data to 0.
             for b in buffer {
                 *b = 0;
             }