[tex-k] Possible bug in The Metafont Book

[Karl Berry]

Hi Richard,

    By "the dvi software associated with TeX" I assume Knuth means dvitype. 

I don't think he means dvitype, but rather DVI drivers for actual output
devices. The part of dvitype.web you quote explains that DVI drivers
should use chardx when necessary rather than rounding the TFM width as
dvitype does.

I can't say I've checked, or remember, what dvips or any other drivers
actually do, but I would presume some drivers used chardx at the time he
wrote that, at least. --thanks, karl.