XGDragView bug?

[Enrico Sersale]

After the recent changes in XGDragView, I'm working to change the
GWorkspace code that actually uses a private BOOL to switch between move
and copy operations.

All seems to work except the Alt_L modifier that has a strange behaviour.

It works exactly conversely, if I *don't* press it, I get a
NSDragOperationCopy, and, to simply move a file, I must press it!

Now, I've taken a look at the other gnustep apps and classes that use dnd,
that is, Gorm and NSColorWell, but I've not find any exemple;

Gorm uses NSDragOperationCopy and NSDragOperationLink and, NSColorWell,
only NSDragOperationCopy.

Am I missing something or this is a bug?