CLI: AbstractConsoleDownloadMonitor, BatchModeDownloadMonitor output download progress to STDOUT

What does "filter STDOUT" exactly mean? For usage in batch scenarios, one can add -batch to the Maven CLI and disable progress output. stdout is intentionally used by the CLI for the progress monitor because the logger does not support "\r".

By filtering STDOUT I mean loading output in environment variables, etc.
I do use "-batch" - that's why I registered this issue. Maven CLI used BatchModeDownloadMonitor in this mode, which still outputs progress into stdout:

http://svn.apache.org/repos/asf/maven/maven-2/tags/maven-2.2.1/maven-core/src/main/java/org/apache/maven/cli/BatchModeDownloadMonitor.java

public void transferInitiated( TransferEvent transferEvent )
{
  String message = transferEvent.getRequestType() == TransferEvent.REQUEST_PUT ? "Uploading" : "Downloading";

  String url = transferEvent.getWagon().getRepository().getUrl();

  out.println( message + ": " + url + "/" + transferEvent.getResource().getName() );
}

I can't quite follow, what would be the difference to your filtering if the progress went to the Logger (which eventually just prints to STDOUT) instead?

I can switch off most of logger messages by running "mvn -q ...". That option does nothing to the text pushed straight into System.out, of course. Currently, "Downloading: ...." is the only thing that keeps printing from time to time to stdout.

Aha, so what you're actually asking for is to disable the progress when quiet mode is enabled.

Yes, either disable it in quite mode or batch mode - I'll adjust.

Made transfer progress output respect quiet mode in r947404.