Bug 16181 Tab key doesn't work in editor when 'Insert spaces for tabs' enabled
Using integration build 0515, pressing Tab in an editor window doesn't do anything when 'Insert spaces for tabs' is selected. The editor is marked as unsaved, but no spaces appear.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
}
		
		if (nextErrorPosition != null) {
			errorPosition.setOffset(nextErrorPosition.getOffset());
			errorPosition.setLength(nextErrorPosition.getLength());
		}
		
		return nextError;
	}
	
	/*
	 * @see AbstractTextEditor#isSaveAsAllowed() 
	 */
	public boolean isSaveAsAllowed() {
		return true;
	}
	
	/*
	 * 1GF7WG9: ITPJUI:ALL - EXCEPTION: "Save As..." always fails
	 */
	protected IPackageFragment getPackage(IWorkspaceRoot root, IPath path) {
				
		if (path.segmentCount() == 1) {
			
			IProject project= root.getProject(path.toString());
			if (project != null) {
				IJavaProject jProject= JavaCore.create(project);
				if (jProject != null) {
					try {
						IJavaElement element= jProject.findElement(new Path(""));