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
throw new OperationCanceledException();
							} else {
								exceptions.add(e);
							}
						} else {
							exceptions.add(e);
						}
					} else {
						exceptions.add(e);
					}
				}
			}
			IStatus result = createResult(exceptions);
			if (!result.isOK()) {
				throw new CoreException(result);
			}
		} finally {
			monitor.done();
		}
		return returnedResourceDescriptions;
	}
	/**
	 * Copies the resources to the given destination. This method can be called
	 * recursively to merge folders during folder copy.
	 * 
	 * @param resources
	 *            the resources to be copied
	 * @param destination
	 *            the destination path for the resources, relative to the
	 *            workspace