[Lua] Highlighting improvements?

[Yakehira]

'self' is not an operator, 'self' has been flagged as operator which looks weird overall. In theming it's variable.language.

In this case 'func' shouldn't have the function color, only Sub should because thats our Function and 'func' inside function should have the same color as outside because it's the same reference.

Also you can see that arg1 is colored like a variable, but it should have it's own color so it's not mixed with other variables. In theming it's variable.language.arguments.

Anything that can be done?

[Stanzilla]

Agree here, also is it intentional that end has a different color than function?