The code editor plugin uses the XML syntax definitions from the Kate/KWrite project. The result of that is highlighting support for 272 languages.
Ever wondered about some properties of your plain text file other than just how many lines you typed? The code editor plugin got you covered!
Because who needs that anyway? Most useless feature ever! Look at the picture: Just line numbers! No folding marks! Not even as an option! How insane is that?
And yes, the blury part shows VHDL code. Great, right?