Applied patch attached to issue2550723. Problem in index page @pagesize=0 not properly propigated to previous batch link (is set to actual number of entries displayed). Using demo.py verified original issue with 0 page size. Also verified that a non-zero page size was properly propigated (values 5 and 20). Applied patch attached to issue. Verified issue with size 0 fixed. Verified that values 5 and 20 worked correctly. Updated CHANGES.txt.

See <a href="http://dev.zope.org/Wikis/DevSite/Projects/ZPT">the
ZPT project Wiki</a> for more information about Page Templates, or
<a href="http://www.zope.org/Members/4am/ZPT">the download page</a>
for installation instructions and the most recent version of the software.

This Product requires the TAL and ZTUtils packages to be installed in
your Python path (not Products).  See the links above for more information.