+#else /* !VMS */
+# ifdef WIN32
+# define PERL_FILE_IS_ABSOLUTE(f) \
+ (*(f) == '/' \
+ || ((f)[0] && (f)[1] == ':') /* drive name */ \
+ || ((f)[0] == '\\' && (f)[1] == '\\')) /* UNC path */
+# else /* !WIN32 */
+# ifdef DOSISH
+# define PERL_FILE_IS_ABSOLUTE(f) \
+ (*(f) == '/' \
+ || ((f)[0] && (f)[1] == ':')) /* drive name */
+# else /* !DOSISH */
+# define PERL_FILE_IS_ABSOLUTE(f) (*(f) == '/')
+# endif /* DOSISH */
+# endif /* WIN32 */
+#endif /* VMS */