1 files changed, 16 insertions, 0 deletions
diff --git a/src/util.c b/src/util.c
index 653b5f3..7231ed2 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,4 +1,5 @@
 #define _XOPEN_SOURCE 600
+#define _GNU_SOURCE
 
 #include "util.h"
 #include "tui.h"
@@ -40,6 +41,21 @@ done:
 	return width;
 }
 
+const wchar_t *
+wcscasestr(const wchar_t *haystack, const wchar_t *needle)
+{
+	int hslen, nlen, i;
+
+	nlen = wcslen(needle);
+	hslen = wcslen(haystack) - nlen;
+	for (i = 0; i < hslen; i++) {
+		if (!wcsncasecmp(haystack + i, needle, nlen))
+			return haystack + i;
+	}
+
+	return NULL;
+}
+
 void
 panic(const char *file, int line, const char *msg, ...)
 {