custom List show zero result

[straysh]

when using rsync to upload/list/download backups, if remote is empty, custom list command get empty, then the final output shows:

   0B   01/01/0001 00:00:00   remote

look into this code pkg/custom/list_custom.go, when strings.TrimRight(out, "\n") got empty string, strings.Split("", "\n") got []string{""} , but we expect it as []string{}.

outLines := strings.Split(strings.TrimRight(out, "\n"), "\n")
backupList := make([]storage.Backup, len(outLines))
for i, line := range outLines {
	if len(line) > 0 {
		if err = json.Unmarshal([]byte(line), &backupList[i]); err != nil {
			return nil, fmt.Errorf("JSON parsing '%s' error: %v ", line, err)
		}
	}
}

and this result to backupList got []storage.Backup{ storage.Backup{} }, which contains only one empty struct item. and lead to the problem above.