[RFC] Var_export tabbing

I've been trying to think of something that would be a good project to cut my teeth on for a first C project in forever and I'd rather work on something that might be useful. While cleaning tabbing on a var_export for a test class I think I have an idea. What I'm looking for is two things. One, is this the sort of thing that a beginner to C (not a beginning programmer mind you - I've been doing PHP scripting for, gosh, 7 years now) can do. If so I'll do this just for the experience of it because I need to learn how to prep patches and the remainder of the process for more major patches - such as the include style I RFC'ed earlier. It looks like if it's going to happen I'll have to learn how to do it. Anyway, var_export takes 2 arguments - the expression to be converted and whether to return or echo it. I'd like to add a third, whether to use spaces (default) or tabs for indentation For backwards compatibility null would mean uses spaces, and use 2 per indentation. If set to true a tab character would be used. Thoughts and input appreciated.