--- include/common.h	Mon Mar 14 00:02:43 2005
+++ include/common.h	Wed Oct 26 13:51:36 2005
@@ -198,11 +198,24 @@
 #define	iscntrl(c) (char_atribs[(u_char)(c)]&CNTRL)
 #define isalpha(c) (char_atribs[(u_char)(c)]&ALPHA)
 #define isspace(c) (char_atribs[(u_char)(c)]&SPACE)
+#ifndef RUSSIAN_IRCD
 #define islower(c) ((char_atribs[(u_char)(c)]&ALPHA) && ((u_char)(c) > 0x5f))
 #define isupper(c) ((char_atribs[(u_char)(c)]&ALPHA) && ((u_char)(c) < 0x60))
-#define isdigit(c) (char_atribs[(u_char)(c)]&DIGIT)
 #define	isxdigit(c) (isdigit(c) || ('a' <= (c) && (c) <= 'f') || \
 		     ('A' <= (c) && (c) <= 'F'))
+#else
+#define islower(c) ((char_atribs[(u_char)(c)]&ALPHA) && (((u_char)(c) >= 0x61 && (u_char)(c) <= 0x7a) || \
+			((u_char)(c) >= 0xe0 && (u_char)(c) <= 0xff) || \
+			(u_char)(c) == 0xb8))
+#define isupper(c) ((char_atribs[(u_char)(c)]&ALPHA) && (((u_char)(c) >= 0x41 && (u_char)(c) <= 0x5a) || \
+			((u_char)(c) >= 0xc0 && (u_char)(c) <= 0xdf) || \
+			(u_char)(c) == 0xa8))
+#define	isxdigit(c) (isdigit(c) || ('a' <= (c) && (c) <= 'f') || \
+		     ('A' <= (c) && (c) <= 'F') || \
+		     ((u_char)(c) >= 0xc0 && (u_char)(c) <= 0xff) || \
+		     (u_char)(c) == 0xa8 || (u_char)(c) == 0xb8)
+#endif
+#define isdigit(c) (char_atribs[(u_char)(c)]&DIGIT)
 #define isalnum(c) (char_atribs[(u_char)(c)]&(DIGIT|ALPHA))
 #define isprint(c) (char_atribs[(u_char)(c)]&PRINT)
 #define isascii(c) ((u_char)(c) >= 0 && (u_char)(c) <= 0x7f)