Bug 267173 [Linked Resources] Data loss when replacing one linked resource with another using drag and drop
Build ID: HEAD Steps To Reproduce: I've got a Group with some links to folders. If I drag and drop a linked folder from another workspace path, into the group, I get the dialog saying: "project/group/linked_folder" already exists. Do you wish to overwrite? Folder contents will be merged existing files will be overwritten. In my case I had selected a bunch of linked resources to drag into the group, (some of which are identical to the links already in the group). So I pressed "Yes To All". The result is an error: "Resource is out of sync with the filesystem: ..." The move operation has actually tried to replace a file with itself, and this fails (and the resulting file is empty...). I find this completely counter-intuitive. If I'm replacing a linked resource with another, I don't want a recursive merge. I want to replace the link, just like aliases in a filesystem...
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/undo/WorkspaceUndoUtil.java
| IResource.KEEP_HISTORY, new SubProgressMonitor(
							monitor, 1));
					
					
					if (generatedParent == null) {
						resourcesAtDestination.add(getWorkspace().getRoot()
								.findMember(destinationPath));
					} else {
						resourcesAtDestination.add(generatedParent);
					}
				}
				if (monitor.isCanceled()) {
					throw new OperationCanceledException();
				}
			}
		}
		monitor.done();
		return (ResourceDescription[]) overwrittenResources
				.toArray(new ResourceDescription[overwrittenResources.size()]);
	}
	/**
	 * Recreate the resources from the specified resource descriptions.
	 * 
	 * @param resourcesToRecreate
	 *            the ResourceDescriptions describing resources to be recreated
	 * @param monitor
	 *            the progress monitor used to show progress
	 * @param uiInfo
	 *            the IAdaptable (or <code>null</code>) provided by the
	 *            caller in order to supply UI information for prompting the