Bug 86184 [KeyBinding] registry: Missing key binding for paste in emacs scheme
3.1 M5a 1. start fresh workspace 2. Window > Preferences > General > Keys 3. switch to "Modify" 4. select emacs scheme 5. select "Edit" category 6. select "Paste" command ==> all key bindings are missing, only the binding provided by "Editing Text" is there. This might be caused by the fact that Ctrl+Y is already declared in org.eclipse.ui/plugin.xml for the redo command.
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
*            never be empty, and must never be <code>null</code>.
	 * @return The binding which best matches the current state. If there is a
	 *         tie, then return <code>null</code>.
	 */
	private final Binding resolveConflicts(final Collection bindings,
			final Map activeContextTree) {
		/*
		 * This flag is used to indicate when the bestMatch binding conflicts
		 * with another binding. We keep the best match binding so that we know
		 * if we find a better binding. However, if we don't find a better
		 * binding, then we known to return null.
		 */
		boolean conflict = false;
		final Iterator bindingItr = bindings.iterator();
		Binding bestMatch = (Binding) bindingItr.next();
		/*
		 * Iterate over each binding and compare it with the best match. If a
		 * better match is found, then replace the best match and set the
		 * conflict flag to false. If a conflict is found, then leave the best
		 * match and set the conflict flag. Otherwise, just continue.
		 */
		while (bindingItr.hasNext()) {
			final Binding current = (Binding) bindingItr.next();
			/*
			 * CONTEXTS: Check for context superiority, only if we care about
			 * contexts.
			 */
			final String currentContext = current.getContextId();
			final String bestContext = bestMatch.getContextId();
			if (!currentContext.equals(bestContext)) {