X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/tig/blobdiff_plain/9295982a3492d52bc85a6b7b12817ca3d6fbe007..6a19a30372cca7c252afcf6adbb31b6e9ecdee9b:/tig.c

diff --git a/tig.c b/tig.c
index fcbf93c..81bc52b 100644
--- a/tig.c
+++ b/tig.c
@@ -42,6 +42,9 @@
 #include <langinfo.h>
 #include <iconv.h>
 
+/* ncurses(3): Must be defined to have extended wide-character functions. */
+#define _XOPEN_SOURCE_EXTENDED
+
 #include <curses.h>
 
 #if __GNUC__ >= 3