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Xsd pattern constraint - disallow backslash

I have a requirement to disallow backslashes in a given string field defined by an xsd document. However, being as green as me, I am not sure about my knowledge of xsd and / or regex. Here's what I have so far:

<xs:simpleType name="BackslashRestrictedField">
  <xs:restriction base="xs:string">
    <xs:minLength value="0" />
    <xs:pattern value="[^\\]"/> <!-- disallow backslash '\' char ??? -->
  </xs:restriction>
</xs:simpleType>

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If I'm correct, with this expression, you only allow one character long string and don't accept backslashes. Adding * to the end of your regex should fix this problem.



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