xmerl trouble with validation anyURI type

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Hello,

I have a trouble with validating xml document by xsd schema with
attribute's type anyURI and value = "alerting.wav". According to RFC 3986
(Uniform Resource Identifier)
"alerting.wav" is valid value for anyURI type. I've tried on Erlang R16B03,
17.4.

I attached simple sample, where you can see this problem. To run it,
compile xml_test and invoke "test" method.

I've analyzed xmerl source code, and have found that in xmerl_xsd_type.erl
file make validation anyURI type. According source code anyURI must
contains SCHEME section, but by RFC 3986
this section is optional. I've made fix, that validate anyURI type
according regular expression from RFC 3986, Appendix B.

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<div dir=3D"ltr"><div>Hello,</div><div><br></div><div>I have a trouble with=
 validating xml document by xsd schema with attribute&#39;s type anyURI and=
 value =3D &quot;alerting.wav&quot;. According to RFC 3986 (Uniform Resourc=
e Identifier)</div><div>&quot;alerting.wav&quot; is valid value for anyURI =
type. I&#39;ve tried on Erlang R16B03,<span style=3D"color:rgb(0,0,0);white=
-space:pre-wrap"> 17.4.</span></div><div><br></div><div>I attached simple s=
ample, where you can see this problem. To run it, compile xml_test and invo=
ke &quot;test&quot; method.</div><div><br></div><div>I&#39;ve analyzed xmer=
l source code, and have found that in xmerl_xsd_type.erl file make validati=
on anyURI type. According source code anyURI must contains SCHEME section, =
but by RFC 3986</div><div>this section is optional. I&#39;ve made fix, that=
 validate anyURI type according regular expression from RFC 3986, Appendix =
B.</div><div><br></div></div>

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