Potential bug in sv geometry

"onf" <[email protected]>
Newsgroups gmane.comp.printing.groff.general
Message-ID <[email protected]>
Hi all,

there seems to be an off by one bug in sv's geometry in groff.

Given the input,
  .de x
  . br
  ..
  .wh 2v x
  Lorem
  .br
  .sv 1v
  ipsum
  .br
  dolor

groff gives the output
  Lorem
  ipsum
  dolor

whereas both Heirloom troff and Plan 9 troff give
  Lorem

  ipsum
  dolor

Groff gives the same output when the wh line is
changed to
  .wh 2v+1u x

(in troff mode; in nroff mode, +1v is needed due to lower resolution)

Cheers,
onf
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