Don't discard selection after copy action

[outis]

After dragging a group of files between panes, the selection is discarded, whether or not the copy occurs. This is particularly problematic if the copy is cancelled, such as if there are duplicates/existing files and the user choses not to merge & replace (see issues #238 & #306). The user must then go back through the laborious task of reselecting files (see issues #243 & #316).

A more usable design with the current file-selection behaviors would be to unselect files when they are successfully copied, so that if the copy is cancelled or interrupted, uncopied files will still be selected and can be retried.

Better overall would be to have better selection management features (e.g. range selection with shift+click, "clear selection" & "invert selection" actions), but that's a separate issue.

[wedebe]

I just came here to report the same issue. As Move isn't (currently?) available as a function, I'd like to delete files one they've been copied, but I have to either remember my selection or visually compare which files have been copied.