RE: [Groff] Short Orphan Lines

[Andrew Piziali]

Larry,

   I implemented your suggestion as follows:

.de ParBeg\"                        Divert paragraph so we can prevent
.  di ParDIV\"                        orphan lines on the top of the
.  PP\"                               next page.
..
.de ParEnd\"                        End paragraph diversion.  If all but
.  di\"                               two lines of the paragraph will
.  if (\\n[.t] < (\\n[dn]-2v))\#      not fit on this page, set a trap
.    dt \\n[.h]u+\\n[dn]u-2v ParBP\"  for two lines from the bottom of
.\"                                   the paragraph.
.  ParDIV\"                         Print the paragraph.
..
.de ParBP\"                         Break page called by trap set in
.  bp\"                               ParEnd.
..

and it almost works as expected.  The third-to-last and second-to-last
lines of a paragraph that will not fit on a page are spilled to the top
of the next page.  The last line is never printed!  I eliminated the
macros as the source of the problem by inlining the .di, .if, .dt and
.ParDIV requests and it behaves the same: two of the last three lines of
the paragraph print at the top of the next page.

   What am I missing?

   Thanks!


-- 
        Andrew Piziali, <address@hidden>