Re: [Groff] Diversion/trap help
Under what circumstances would a diversion that ends on the
bottom line of a page spring a footer trap even when the
diversion has been chopped?
As usual, please provide a small snippet which demonstrates
the problematic behaviour.
It might be related to outputting the diversion in no-fill mode,
which behaves somewhat as if there were a .br at the end.
Try the following, and uncomment either the .nf or the .br:
.\ This is for A4 paper.
.\
.wh 0 HD
.wh -2c FT
.pl 29.7c
.po 2.5c
.ll 16c
.\
.de HD
.ev 1
.lt 16c
.sp |1c-1v
.tl ''page % header''
.sp |2c
.ev
..
.de FT
.ev 1
.sp |29.7c-1c-1v
.tl ''page % footer''
.bp
.ev
..
.\
.de XX
ps: def
/cm { 72 mul 2.54 div } def
/BPhook
{ gsave
1 .9 .9 setrgbcolor 0 27.7 cm 21 cm 2 cm rectfill
.9 1 .9 setrgbcolor 0 2 cm 21 cm 25.7 cm rectfill
.9 .9 1 setrgbcolor 0 0 cm 21 cm 2 cm rectfill
grestore }
def
..
.\
\Y[XX]\c
.di xx
Hello,
.br
\!.sp 24.9c
world.
.br
.di
.\ .nf
.xx
.\ .br
.\
.\ This is the end. Don't let blank lines creep in here.
Re: [Groff] Diversion/trap help
Under what circumstances would a diversion that ends on the bottom line of a page spring a footer trap even when the diversion has been chopped? The end of document handling in groff is handled specially in the C++ source; maybe there's a bug. If anyone can come up with a reason (or several reasons), I may be able to track down the source of the problem and then be more precise in asking for help if I can't fix it myself. As it is, I'm stymied. As usual, please provide a small snippet which demonstrates the problematic behaviour. And sorry for not having time yet to examine your `refer' problem. Werner
[Groff] Diversion/trap help
I've been struggling with a problem for three days, so I guess it's time to ask help. Under what circumstances would a diversion that ends on the bottom line of a page spring a footer trap even when the diversion has been chopped? I've been working on the refer section of mom, and I came upon the problem, as so often, by accident. Some endnotes happened to conclude at the very bottom of a page, and I discovered that a blank page, complete with header and footer, was being output afterwards. The endnotes are collected in a diversion which outputs flawlessly over several pages. However, when the final page ends as I've described, there's that damn blank page afterwards, even though the diversion's chopped before output. If anyone can come up with a reason (or several reasons), I may be able to track down the source of the problem and then be more precise in asking for help if I can't fix it myself. As it is, I'm stymied. -- Peter Schaffter Author of The Binbrook Caucus http://www.schaffter.ca
