Transmission

I was waiting for the post download script feature for a long time, and once it is implemented I found that I could not write a script to copy the files, because I do not know (from within the script) what these files are.
Other users might ask for other information if it is useful to them, and each ...

[I don't understand what you mean. Given the top level directory name, you sohuld be able to do a recursive copy, right?
Two (or more) torrents might load to the same folder. Also the user might have choosen to download only some of the filen in the torrent. When a download completes I want to be ...

isn't that in effect already included in the present env variables TR_TORRENT_DIR and TR_TORRENT_NAME

TR_TORRENT_NAME is the name of the torrent, not the name of the file(s) downloaded using the torrent.
In order to be able to copy the file(s) that were downloaded, I would need the path to the ...

The "Call script when download complete " new feature in 2.13 is great. I would like to write a script that copies the downloaded file to another location.
However the environment variables for the script do no supply information about the downloaded file.

How about adding TR_DOWNLOADED_PATH ...