This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
The first paragraph in `15.4.5 fn:sum' reads: <quote> Summary: Returns a value obtained by adding together the values in $arg. If $zero is not specified, then the value returned for an empty sequence is the xs:integer value 0. If $zero is specified, then the value returned for an empty sequence is $zero.. </quote> Note the two dots at the end of the paragraph. Cheers, Frans