#define I32_MAX INT32_MAX
#define I32_MIN INT32_MIN
-#define U32_MAX UINT32_MAX
+#ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
+# define U32_MAX UINT32_MAX
+#else
+# define U32_MAX 4294967295U
+#endif
#define U32_MIN UINT32_MIN
#else
#define isBLANK_LC_uni(c) isBLANK(c) /* could be wrong */
#define isALNUM_utf8(p) is_utf8_alnum(p)
-#define isIDFIRST_utf8(p) is_utf8_idfirst(p)
+/* The ID_Start of Unicode is quite limiting: it assumes a L-class
+ * character (meaning that you cannot have, say, a CJK character).
+ * Instead, let's allow ID_Continue but not digits. */
+#define isIDFIRST_utf8(p) (is_utf8_idcont(p) && !is_utf8_digit(p))
#define isALPHA_utf8(p) is_utf8_alpha(p)
#define isSPACE_utf8(p) is_utf8_space(p)
#define isDIGIT_utf8(p) is_utf8_digit(p)