From 279321fa7396fff13ce1ea9d555c895b15be539c Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Wed, 23 Feb 2022 20:35:22 +0100
Subject: [PATCH] ime: fix utf8_size for the NUL character

---
 src/ime.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ime.cpp b/src/ime.cpp
index cd36af5..e95467b 100644
--- a/src/ime.cpp
+++ b/src/ime.cpp
@@ -29,7 +29,9 @@ static const uint32_t UTF8_INVALID = 0xFFFD;
 static size_t utf8_size(const char *str)
 {
 	uint8_t u8 = (uint8_t)str[0];
-	if ((u8 & 0x80) == 0) {
+	if (u8 == 0) {
+		return 0;
+	} else if ((u8 & 0x80) == 0) {
 		return 1;
 	} else if ((u8 & 0xE0) == 0xC0) {
 		return 2;