Black Hole
May contain traces of nut
It seems they want to go the German way with compound nouns - but this has been an ongoing trend, probably go as long as language. For example, even within a generation or two, "to day" has become "to-day" and now "today". What is to me a "hard-working head teacher" will be a "hardworking headteacher" to the next generation. We can lament it, and comment on it, all we like, it won't change a thing - just as no doubt those of the last generation scratch their heads over "today".
However, this is AvP, and I say "headteacher" is wrong!
However, this is AvP, and I say "headteacher" is wrong!