I've been wanting this for some time, too. My current command line scripts create a subdirectory, move all the files to be archived, create the archive and then nuke the subdirectory. It's the only way I can be sure I'm not nuking newly created logs.
It's the default behavior of tar, and it's a feature that has long been available in the command line instances of WinRAR and WinZIP.
2007-02-12 15:09:13 UTC in 7-Zip