Applying Postel's Law to XML, from a Unicode perspective?

Mark Davis ☕️ mark at
Sun Jun 28 08:49:45 CDT 2015

On Sun, Jun 28, 2015 at 2:31 PM, Costello, Roger L. <costello at>

> How might Postel's Law be applied to web services that receive XML and
> sends out XML?
> Here's one idea: a web service is willing to receive UTF-8 XML documents
> containing a pseudo-BOM; the web service sends out UTF-8 XML documents
> without the pseudo-BOM.
> Can you think of Unicode errors in inbound XML documents that a web
> service might be willing to accept?

​Your question is not at all in the scope of Unicode. It is an XML issue,
so should be directed to the W3C, not here.
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