I was trying to delete an individual file from my shelf and it turns out the delete button deletes all of the files in the shelf instead. Is there a way to recover these files besides going into .hg/Trashcan and trying to remember which of those files were deleted?
The best way to do this, as you alluded to, is to go into the .hg/Trashcan and copy the shelf file back into the .hg/shelves folder. Obviously if you order or list the trashcan folder by date you should be able to see which was the one you deleted by accident!
来源：https://stackoverflow.com/questions/17372525/how-to-recover-files-that-have-been-deleted-from-shelf-in-tortoisehg-program