Unfortunately, I cannot explain exactly what happened. The result is the following: In my repository I have a file foo.bar for which the correct version is HEAD-1. How can I create a new revision, such that the only difference between HEAD and HEAD+1 is that foo.bar in HEAD+1 is the one from HEAD-1. All other elements of the repository should be identical in HEAD+1 to those of HEAD.
By invoking
svn update -rHEAD-1 foo.bar
I obtain a working copy which is the one I want to become HEAD+1. However, svn status doesn't show anything.
I hope my question make some sense...