When I divide my document into \startfrontmatter, \startbodymatter, etc.
an extra page is added to the end of the pdf. Is this expected behavior?
How can I prevent it?

\def\mypagenumber#1%
  {\headnumber[chapter]-#1}
\setuppagenumbering[command=\mypagenumber]
\starttext
\startfrontmatter
\completecontent
\stopfrontmatter
\startbodymatter
\chapter{foo} \section{bar} \section{baz}
\chapter{qux} \section{quux} \section{corge}
\chapter{grault} \section{garply} \section{waldo}
\stopbodymatter
\stoptext

-- 
Stuart Jansen <sjansen@gurulabs.com>
Guru Labs, L.C.