var res *Checksum
		for _, header := range trailing {
			var duplicates bool
			switch {
			case strings.EqualFold(header, ChecksumCRC32C.Key()):
				duplicates = res != nil
				res = NewChecksumWithType(ChecksumCRC32C|ChecksumTrailing, "")
			case strings.EqualFold(header, ChecksumCRC32.Key()):
				duplicates = res != nil
				res = NewChecksumWithType(ChecksumCRC32|ChecksumTrailing, "")

		name string
		args args
		want []string
	}{
		{
			name: "No duplicates",
			args: args{ports: []string{"1234", "2345"}},
			want: []string{"1234", "2345"},
		},
		{
			name: "Sequential Duplicates",
			args: args{ports: []string{"1234", "1234", "2345", "2345"}},
			want: []string{"1234", "2345"},
		},
		{
			name: "Mixed Duplicates",
			args: args{ports: []string{"1234", "2345", "1234", "2345"}},

			success: false,
		},
		// no duplicates, shall be parsed properly.
		{

	if v == nil {
		bugLogIf(ctx, errInvalidArgument)
		return errInvalidArgument
	}

	nv := make(textproto.MIMEHeader, len(v))
	for k, kv := range v {
		// Canonicalize all headers, to remove any duplicates.
		nv[http.CanonicalHeaderKey(k)] = kv
	}

	// Save all supported headers.
	for _, supportedHeader := range supportedHeaders {
		value, ok := nv[http.CanonicalHeaderKey(supportedHeader)]
		if ok {

	if l <= 1 {
		return l
	}
	for i := 1; i < l; i++ {
		if !data.Less(p, i) {
			continue
		}
		p++
		if p < i {
			data.Swap(p, i)
		}
	}
	return p + 1
}

// Remove any duplicates and return unique entries.
func uniqueEntries(paths []string) []string {
	sort.Strings(paths)
	n := uniq(sort.StringSlice(paths))
	return paths[:n]
}

// Init sets the trimStrings to possible GOPATHs

			hi := lo
			if p.peek() == '-' {
				p.next()
				hi = p.registerNumber(p.next().String())
			}
			if hi < lo {
				lo, hi = hi, lo
			}
			// Check there are no duplicates in the register list.
			for i := 0; lo <= hi && i < maxReg; i++ {
				if bits&(1<<lo) != 0 {
					p.errorf("register R%d already in list", lo)
				}
				bits |= 1 << lo
				lo++
			}
		default:

	isDup bool
}

type fileInfoDirEntry interface {
	fs.FileInfo
	fs.DirEntry
}

func (f *fileListEntry) stat() (fileInfoDirEntry, error) {
	if f.isDup {
		return nil, errors.New(f.name + ": duplicate entries in zip file")
	}
	if !f.isDir {
		return headerFileInfo{&f.file.FileHeader}, nil
	}
	return f, nil
}

// Only used for directories.

	uniqueArgs := set.NewStringSet()
	for _, sargs := range setArgs {
		for _, arg := range sargs {
			if uniqueArgs.Contains(arg) {
				return nil, config.ErrInvalidErasureEndpoints(nil).Msg(fmt.Sprintf("Input args (%s) has duplicate ellipses", args))
			}
			uniqueArgs.Add(arg)
		}
	}

	return setArgs, nil
}

// Override set drive count for manual distribution.
const (

			}
			if oi.DeleteMarker && (validReplStatus || replicate) {
				dsc.Set(newReplicateTargetDecision(tgtArn, replicate, sync))
				continue
			}
			// can be the case that other cluster is down and duplicate `mc rm --vid`
			// is issued - this still needs to be replicated back to the other target
			if !oi.VersionPurgeStatus.Empty() {
				replicate = oi.VersionPurgeStatus == Pending || oi.VersionPurgeStatus == Failed

		if best.name > last {
			select {
			case <-ctxDone:
				return ctx.Err()
			case out <- *best:
				last = best.name
			}
		} else if serverDebugLog {
			console.Debugln("mergeEntryChannels: discarding duplicate", best.name, "<=", last)
		}
		// Replace entry we just sent.
		if err := selectFrom(bestIdx); err != nil {
			return err
		}
	}
}

// merge will merge other into m.