From f700a717d74218ac5a6bedaf5b71eaf96399dc13 Mon Sep 17 00:00:00 2001
From: kichikuou <KichikuouChrome@gmail.com>
Date: Thu, 15 Aug 2024 16:50:52 +0900
Subject: [PATCH] Do not pass negative values to isspace()

MSVCRT debug versions assert that.
---
 src/config.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/config.cpp b/src/config.cpp
index 8c418c5..ff7b16d 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -38,7 +38,7 @@ std::string normalize_path(std::string s)
 bool is_empty_line(const char *s)
 {
 	for (; *s; s++) {
-		if (!isspace(*s))
+		if (!isspace((unsigned char)*s))
 			return false;
 	}
 	return true;
@@ -46,10 +46,10 @@ bool is_empty_line(const char *s)
 
 char *trim(char *s)
 {
-	while (isspace(*s))
+	while (isspace((unsigned char)*s))
 		s++;
 	char *p = s + strlen(s) - 1;
-	while (p > s && isspace(*p))
+	while (p > s && isspace((unsigned char)*p))
 		*p-- = '\0';
 	return s;
 }