Yup, they seem to have used an overly indent-happy indentation scheme. Two separate indents: he 'begin' after the 'for' and for the block body is superfluous. T

Yup, they seem to have used an overly indent-happy indentation scheme. Two separate indents: he 'begin' after the 'for' and for the block body is superfluous. This raises the concern that their results are biased towards smaller indents.