OK, I give up. I'm using version 2.2.1, and when I try to index I get 
the following:

Bad directive on line #15: IndexContents XML .xml

I've also tried "IndexContents XML* .xml". For your edification, I'm 
pasting in the entire configuration file below. Thanks for any 
suggestions on where I went wrong.
Roy

IndexDir /escholarship/tomcat-4.0/webapps/saxon/eschol
IndexFile /escholarship/swish-e/indexes/ucpress.swish
IndexName "UC Press Books"
IndexDescription "This is an index of UC Press books."
IndexPointer "http://escholarship.cdlib.org/cgi-bin/searchucpress.pl"
IndexAdmin "Roy Tennant (roy.tennant@ucop.edu)"
MetaNames title docAuthor
PropertyNames title
ReplaceRules remove "/escholarship/tomcat-4.0/webapps/saxon/eschol/"
ReplaceRules remove ".xml"
IgnoreLastChar ).],;:?!'"
IgnoreFirstChar ("[
IndexComments 0
IndexOnly .xml
IndexContents XML .xml