diff -r f28bb31024b4 -r 4277359896dc librazor/razor-internal.h
--- a/librazor/razor-internal.h	Wed Aug 20 18:57:59 2014 +0100
+++ b/librazor/razor-internal.h	Tue Sep 09 15:04:24 2014 +0100
@@ -346,4 +346,15 @@
 int razor_allow_all_root_names(void);
 int razor_valid_root_name(const char *name);
 
+#define RAZOR_ASCII_ISALPHA(c) \
+	((c) >= 'A' && (c) <= 'Z' || (c) >= 'a' && (c) <= 'z')
+
+#ifdef MSWIN_API
+#define SKIP_DRIVE_LETTER(path) \
+	((RAZOR_ASCII_ISALPHA(path[0]) && (path)[1] == ':') ? \
+	   (path) + 2 : (path))
+#else
+#define SKIP_DRIVE_LETTER(path) (path)
+#endif /* MSWIN_API */
+
 #endif /* _RAZOR_INTERNAL_H_ */