Hi Ralph, On 6/16/18, Ralph Corderoy <ra...@inputplus.co.uk> wrote: > It's odd that for `ps' it's the first trap to a rounded position that > springs, but for `ascii' it's the second.
True, but it's odd that there should be rounding in the ps device at all, given that the device has a much finer granularity than 1/10 of an inch (2.54 mm to the civilized world). Do you have ready access to a non-groff roff on which you can run this test and see if it gives the same result? If not, I've been meaning for a while to try out Heirloom troff anyway, so this might be a good excuse to finally install it.