linux-kernel - [PATCH] kconfig/nconf: Initialize the default locale at startup

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Message-ID: <20251014144405.3975275-2-jakub.git@horky.net>
Date: Tue, 14 Oct 2025 16:44:06 +0200
From: Jakub Horký <jakub.git@...ky.net>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Jakub Horký <jakub.git@...ky.net>
Subject: [PATCH] kconfig/nconf: Initialize the default locale at startup

Fix bug where make nconfig doesn't initialize the default locale, which
causes ncurses menu borders to be displayed incorrectly (lqqqqk) in
UTF-8 terminals that don't support VT100 ACS by default, such as PuTTY.

Signed-off-by: Jakub Horký <jakub.git@...ky.net>
---
 scripts/kconfig/nconf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index ae1fe5f60327..198467d0edda 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -10,6 +10,7 @@
 #include <string.h>
 #include <strings.h>
 #include <stdlib.h>
+#include <locale.h>
 
 #include <list.h>
 #include <xalloc.h>
@@ -1478,6 +1479,8 @@ int main(int ac, char **av)
 	int lines, columns;
 	char *mode;
 
+	setlocale(LC_ALL, "");
+
 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
 		/* Silence conf_read() until the real callback is set up */
 		conf_set_message_callback(NULL);
-- 
2.43.0