From b32254acda43bc4966565f482ccf911b74a95345 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Sun, 23 Oct 2011 08:03:27 +0000
Subject: [PATCH] Ignore LC_ALL and LC_CTYPE if they are empty as well as
 unset.

---
 tmux.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tmux.c b/tmux.c
index 5d4fda72..0c161490 100644
--- a/tmux.c
+++ b/tmux.c
@@ -289,8 +289,8 @@ main(int argc, char **argv)
 		 * if not they know that output from UTF-8-capable programs may
 		 * be wrong.
 		 */
-		if ((s = getenv("LC_ALL")) == NULL) {
-			if ((s = getenv("LC_CTYPE")) == NULL)
+		if ((s = getenv("LC_ALL")) == NULL || *s == '\0') {
+			if ((s = getenv("LC_CTYPE")) == NULL || *s == '\0')
 				s = getenv("LANG");
 		}
 		if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||