From d508d0359c95651f3d8e8015eb846555438d5c5d Mon Sep 17 00:00:00 2001
From: Tony Gorez <gorez.tony@gmail.com>
Date: Tue, 30 Aug 2022 19:01:09 +0200
Subject: [PATCH] test: update doc in code

---
 src/api/encoding.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/api/encoding.cc b/src/api/encoding.cc
index 68278ff7371d80..ffbabc3b44b04a 100644
--- a/src/api/encoding.cc
+++ b/src/api/encoding.cc
@@ -15,7 +15,11 @@ enum encoding ParseEncoding(const char* encoding,
   switch (encoding[0]) {
     case 'u':
     case 'U':
-      // utf8, utf16le
+      // Note: the two first conditions are needed for performance reasons
+      // as "utf8"/"utf-8" is a common case.
+      // (same for other cases below)
+
+      // utf, utf16le
       if (encoding[1] == 't' && encoding[2] == 'f') {
         // Skip `-`
         const size_t skip = encoding[3] == '-' ? 4 : 3;