func openFileNolog(name string, flag int, perm FileMode) (*File, error) {
	var (
		fd     int
		e      error
		create bool
		excl   bool
		trunc  bool
		append bool
	)

	if flag&O_CREATE == O_CREATE {
		flag = flag & ^O_CREATE
		create = true
	}
	if flag&O_EXCL == O_EXCL {
		excl = true
	}
	if flag&O_TRUNC == O_TRUNC {
		trunc = true
	}
	// O_APPEND is emulated on Plan 9

			if haveExclude[x.Mod] {
				kill[x.Syntax] = true
				continue
			}
			haveExclude[x.Mod] = true
		}
		var excl []*Exclude
		for _, x := range *exclude {
			if !kill[x.Syntax] {
				excl = append(excl, x)
			}
		}
		*exclude = excl
	}

	// Remove duplicate replacements.
	// Later replacements take priority over earlier ones.