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In section 3.12.6, there is the rule: 3.12.6 Constraints on Type Alternative Schema Components 2 If the {test} is not ·absent·, then it satisfies the constraint Test Value OK (§3.13.6), with the following modification: Comparator in Alternative XPath expressions [8] Comparator ::= '=' | '!=' | '<' | '<=' | '>' | '>=' However, as far as I can tell, [8] is identical to [18] in 3.13.6: [18] Comparator ::= '=' | '!=' | '<' | '<=' | '>' | '>='
A wording proposal including changes for this issue went to the WG on 7 February 2008: http://www.w3.org/XML/Group/2004/06/xmlschema-1/structures.consent.200801.html#composition (member-only link).
The corrections accepted by the XML Schema WG on today's call, in order to resolve this issue, are shown in an attachment to bug 5074 (http://www.w3.org/Bugs/Public/attachment.cgi?id=517). With this change, the WG believes we have resolved this issue fully. I'm changing the status of this record accordingly. Xan, as the originator of this comment, you should receive from Bugzilla an email notification of this decision. Please accept our thanks for the bug report. Please let us know if you agree with this resolution of your issue, by adding a comment to the issue record and changing the Status of the issue to Closed. Or, if you do not agree with this resolution, please add a comment explaining why. If you wish to appeal the WG's decision to the Director, then also change the Status of the record to Reopened. If you wish to record your dissent, but do not wish to appeal the decision to the Director, then change the Status of the record to Closed. If we do not hear from you in the next two weeks, we will assume you agree with the WG decision.
Accepted.