Invalid Resource Identifiers

Dear XML Core Working Group,

  http://www.w3.org/TR/2004/PR-xinclude-20040930/ states in section 3.1:

[...]
  A value that results in a syntactically invalid URI or IRI should
  be reported as a fatal error, but some implementations may find it
  impractical to distinguish this case from a resource error. 
[...]

This seems to assume that such resource identifiers neccessarily yield
in a resource error. Please change the text to explicitly state whether
an implementation would be considered conforming if it does not report
a fatal error and processing does not yield in a resource error. This
is possible e.g. if processing yields in a IRI that meets the generic
constraints of the IRI specification but does not meet the specific re-
quirements of the specific scheme and a request is made to via an IRI-
aware protocol for which the server is designed to tolerate such faults,
possibly licenced by the protocol specification, for example. The text
implies that such implementations would be non-conforming.

regards.
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
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