complete --command cleanmgr --no-files --arguments '/d\t"Specify the drive that you want Disk Cleanup to clean"
/sageset\t"Display the Disk Cleanup Settings dialog box and also create a registry keyt"
/sagerun\t"Run the specified tasks that are assigned to the n value if you use the /sageset option"
/tuneup\t"Run /sageset and /sagerun for the same n"
/lowdisk\t"Run with the default settings"
/verylowdisk\t"Run with the default settings, no user prompts"
/?\t"Show help"'