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On Mon, Jul 10, 2017 at 07:08:38PM +0200, René Scharfe wrote:

> > So I think it's a true mechanical conversion, but I have to admit the
> > original is confusing. Without digging I suspect it's correct, though,
> > just because a simple bug here would mean that our ewah bitmaps totally
> > don't work. So it's probably not worth spending time on.
> A few lines below there is "self->bit_size = i + 1", so the code
> calculates how many words the old and the new value are apart (or by how
> many words the bitmap needs to be extended), which becomes easier to see
> with the patch.

Yeah, I'd agree the consistent use of "i + 1" makes the end result after
your patch easier to read.