"Copy Newer" and "Copy Different" ???

[sjk]

This thread reminds me of something I've been meaning to ask and hadn't gotten around to testing it...

Originally Posted by dnanian

When "Copy newer" is selected, the file on the destination is replaced with the one from the source if the file on the source has a later (newer) modification date.

Does "Copy newer" cause SD! to ignore a newer version of a file that's, say, been recently downloading but happens to have older modification date than the older version of that file on the backup target? Or will SD! detect that the file is newer on the source by its "change time", similar to using the -newerct option of the find command?

The latter seems the more intuitive and desirable behavior, without depending on possibly misleading modification dates. And the example above is real because Safari sets the modification date of a downloaded file to whatever it is for that file on the destination server, if possible. Other utilities, like wget, can also behave that way.