Love the UI. You might want to change the text a little bit to make it more readable.

Thanks you for pointing out the font issue. I'll look into that

c++ will have internal error. Could you check it out?

Error: {"code":"InternalError","message":"Invalid regular expression: /^/root/docsets/feeds-master/C++.docset/Contents/Resources/Documents/?.*/: Nothing to repeat"}

Hi, I just pushed a fix.