-int win32_has_dos_drive_prefix(const char *path);
-#define has_dos_drive_prefix win32_has_dos_drive_prefix
-
+#define has_dos_drive_prefix(path) \
+ (isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
int win32_skip_dos_drive_prefix(char **path);
#define skip_dos_drive_prefix win32_skip_dos_drive_prefix
static inline int win32_is_dir_sep(int c)