I don't know under what circumstances Windows scans files but I do no that copying a file to the same drive does not rescan the file. I found this out because g

I don't know under what circumstances Windows scans files but I do no that copying a file to the same drive does not rescan the file. I found this out because grunt-copy-contrib copies incorrectly by opening the src, reading bytes, writing to dest instead of just asking the OS to copy the file. Switch it to ask the OS to copy the file removed the scanning (windows already knows it scanned the file so no need to scan a copy).