Wrong username during release:prepare tagging

If I my Svn repository requires a different username than the login name, and I issue

mvn -Dmaven.username=niclas@hedhman.org release:prepare

The first phase (checking in modified POMs) will succeed with that username.

Then somewhere between that point and writing out the release.properties file, the user name falls back to the login name (in my case "niclas"), which is written into the release.properties file, and used during the tagging of the repository.

Now, looking at the source, I think that is unwise to keep a username both in the ReleaseProgressTracker as well as in the ScmHelper, and I suspect that there is some type of sequencing problem in there.

WORKAROUND;
Before starting the release:prepare, create a release.properties file manually which contains

maven.username=niclas@hedhman.org

and everything will work.