test mode for synchronization

Hi. I am writing a synchronize script via FTP that runs nightly, but I want to run it in a test mode that will only identify the changed files and print them out to the console/log. Is this possible with the current version or a beta version? Could you clue me in a bit on what the commmandline looks like? I have been through the documentation pretty throughly.
thanks.

Thanks for your post.

This request is being tracked already:
https://winscp.net/tracker/885