if ctx == nil {
		return nil
	}
	if ctx.IsSet("memlimit") {
		memlimit := ctx.String("memlimit")
		if memlimit == "" {
			memlimit = ctx.GlobalString("memlimit")
		}
		mlimit, err := humanize.ParseBytes(memlimit)
		if err != nil {
			return err
		}
		debug.SetMemoryLimit(int64(mlimit))
	}
	return nil

		return Config{}, err
	}

	cfg.Optimize = env.Get(OptimizeEnv, kvs.Get(Optimize))

	inlineBlockStr := env.Get(InlineBlockEnv, kvs.Get(InlineBlock))
	if inlineBlockStr != "" {
		inlineBlock, err := humanize.ParseBytes(inlineBlockStr)
		if err != nil {
			return cfg, err
		}
		if inlineBlock > 128*humanize.KiByte {

	}

	rootDiskSize := env.Get(config.EnvRootDriveThresholdSize, "")
	if rootDiskSize == "" {
		rootDiskSize = env.Get(config.EnvRootDiskThresholdSize, "")
	}
	if rootDiskSize != "" {
		size, err := humanize.ParseBytes(rootDiskSize)
		if err != nil {
			logger.Fatal(err, fmt.Sprintf("Invalid %s value in root drive threshold environment variable", rootDiskSize))
		}
		globalRootDiskThreshold = size
	}

				BucketLookup: lookupStyle(r.Target.Path),
			})
			if err != nil {
				batchLogIf(ctx, err)
				return
			}

			// Already validated before arriving here
			smallerThan, _ := humanize.ParseBytes(*r.Source.Snowball.SmallerThan)

			batch := make([]ObjectInfo, 0, *r.Source.Snowball.Batch)
			writeFn := func(batch []ObjectInfo) {
				if len(batch) > 0 {