diff --git a/char32.c b/char32.c
index 827cef8d..3d6c2c78 100644
--- a/char32.c
+++ b/char32.c
@@ -53,6 +53,14 @@ UNITTEST
     xassert(c32cmp(U"b", U"a") > 0);
 }
 
+UNITTEST
+{
+    xassert(c32ncmp(U"foo", U"foot", 3) == 0);
+    xassert(c32ncmp(U"foot", U"FOOT", 4) > 0);
+    xassert(c32ncmp(U"a", U"b", 1) < 0);
+    xassert(c32ncmp(U"bb", U"aa", 2) > 0);
+}
+
 UNITTEST
 {
     char32_t copy[16];
@@ -127,6 +135,20 @@ UNITTEST
     xassert(c32cmp(dst, U"foobar12345678") == 0);
 }
 
+UNITTEST
+{
+    xassert(!isc32upper(U'a'));
+    xassert(isc32upper(U'A'));
+    xassert(!isc32upper(U'a'));
+}
+
+UNITTEST
+{
+    xassert(hasc32upper(U"abc1A"));
+    xassert(!hasc32upper(U"abc1_aaa"));
+    xassert(!hasc32upper(U""));
+}
+
 UNITTEST
 {
     char32_t *c = xc32dup(U"foobar");
diff --git a/char32.h b/char32.h
index 6a5eb080..dcb412ce 100644
--- a/char32.h
+++ b/char32.h
@@ -20,6 +20,10 @@ static inline int c32cmp(const char32_t *s1, const char32_t *s2) {
     return wcscmp((const wchar_t *)s1, (const wchar_t *)s2);
 }
 
+static inline int c32ncmp(const char32_t *s1, const char32_t *s2, size_t n) {
+    return wcsncmp((const wchar_t *)s1, (const wchar_t *)s2, n);
+}
+
 static inline char32_t *c32ncpy(char32_t *dst, const char32_t *src, size_t n) {
     return (char32_t *)wcsncpy((wchar_t *)dst, (const wchar_t *)src, n);
 }
@@ -60,6 +64,10 @@ static inline char32_t toc32upper(char32_t c) {
     return (char32_t)towupper((wint_t)c);
 }
 
+static inline bool isc32upper(char32_t c32) {
+    return iswupper((wint_t)c32);
+}
+
 static inline bool isc32space(char32_t c32) {
     return iswspace((wint_t)c32);
 }
@@ -72,6 +80,13 @@ static inline bool isc32graph(char32_t c32) {
     return iswgraph((wint_t)c32);
 }
 
+static inline bool hasc32upper(const char32_t *s) {
+    for (int i = 0; s[i] != '\0'; i++) {
+        if (isc32upper(s[i])) return true;
+    }
+    return false;
+}
+
 static inline int c32width(char32_t c) {
 #if defined(FOOT_GRAPHEME_CLUSTERING)
     return utf8proc_charwidth((utf8proc_int32_t)c);