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
.asList(copy(members,
													destinationPath,
													resourcesAtDestination,
													new SubProgressMonitor(
															monitor, 1),
													uiInfo, false,
													createVirtual, createLinks,
													relativeToVariable)));
								}
							} else
								folder.createLink(createRelativePath(source.getLocationURI(), relativeToVariable, folder),
										0, new SubProgressMonitor(monitor, 1));
						}
					} else
						source.copy(destinationPath, IResource.SHALLOW,
								new SubProgressMonitor(monitor, 1));
					
					
					if (generatedParent == null) {
						resourcesAtDestination.add(getWorkspace().getRoot()
								.findMember(destinationPath));
					} else {
						resourcesAtDestination.add(generatedParent);
					}
				}
				if (monitor.isCanceled()) {
					throw new OperationCanceledException();
				}
			}
		}