gnuplot.info.gz not a complete info file

For gnuplot-doc-4.0.0-5, maintained by Ubuntu MOTU Developers <email address hidden>, when I attempt to view the Gnuplot info documentation, I get an error about it not being able to find node "Top". I looked at /usr/share/info/gnuplot.info.gz with zless, and see that it contains only the index. Here's one possible solution:

--- rules 2007/04/12 05:55:04 1.1
+++ rules 2007/04/12 05:56:16
@@ -38,7 +38,7 @@
  dh_testdir
  ./configure $(confflags) CFLAGS="$(CFLAGS)" \
    --prefix=/usr --mandir=\$${prefix}/share/man \
- --infodir=\$${prefix}/share/info \
+ --infodir=\$${prefix}/share/info MAKEINFO='makeinfo --no-split' \
    --datadir=\$${prefix}/share/gnuplot \
    --libexecdir=\$${prefix}/lib/gnuplot \
    --without-gnu-readline --without-lasergnu \

That will cause the 'makeinfo' to be run with the '--no-split' option. The other possibility is to have the rule that installs them glob and get all of the files gnuplot.info*.