A convenient Vala syntax sugar is like this:

```vala class TheNameSpace.ASubNameSpace.SomeKindOfThing { // ... } ```

It's equivalent to:

```vala namespace TheNameSpace { namespace ASubNameSpace { class SomeKindOfThing { // ... } } } ```

But this seems to break type name highlighting. Presumably it's a bug in the ctags/tagmanager parsing.