-# else /* NEITHER DOSISH NOR EPOCISH */
-# ifdef MACOS_TRADITIONAL
-# define PERL_FILE_IS_ABSOLUTE(f) (strchr(f, ':') && *(f) != ':')
-# else /* !MACOS_TRADITIONAL */
-# define PERL_FILE_IS_ABSOLUTE(f) (*(f) == '/')
-# endif /* MACOS_TRADITIONAL */
+# else /* NEITHER DOSISH NOR EPOCISH NOR SYMBIANISH */
+# define PERL_FILE_IS_ABSOLUTE(f) (*(f) == '/')