copyTo function from a dir to a dir empties the target dir when overwrite is true

[JakubKahovec]

Hi,

I've found out that when I'm calling copyTo from a dir to a target dir it empties the target dir, which seems to me pretty odd behaviour. Normally when one copies files from a source dir to a target dir doesn't expect that the target dir gets erased.

Jakub

[jiminhsieh]

I found when using copyTo with overwrite = true, it would simply delete anything in the target directory. If I am correct, I would try to work on this. Thanks!

[poslegm]

I think that if (overwrite) destination.delete(swallowIOExceptions = true) in File.copyTo is useless because files in target dir will be overwrited by File.CopyOptions(overwrite).

File.copyTo without this line works like a UNIX cp util.

[pathikrit]

Fixed in #168