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<chapter>
  <header>
    <copyright>
      <year>2004</year><year>2018</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.

    </legalnotice>

    <title>Xmerl Release Notes</title>
    <prepared>otp_appnotes</prepared>
    <docno>nil</docno>
    <date>nil</date>
    <rev>nil</rev>
    <file>notes.xml</file>
  </header>
  <p>This document describes the changes made to the Xmerl application.</p>


<section><title>Xmerl 1.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>The compiler will now emit warnings when (previously
	    bound) underscore-prefixed variables are matched.</p>
          <p>
	    Own Id: OTP-17123</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.26</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Corrected namespace and expanded name in the old dom
	    backend example module.</p>
          <p>
	    Own Id: OTP-17060</p>
        </item>
        <item>
          <p>
	    Corrected a bug that in some cases didn't allow
	    unresolved references when skip_external_dtd option used.</p>
          <p>
	    Own Id: OTP-17061</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.25</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fix a bug that the function name didn't get
	    normalized in some case which left white spaces in links.
	    </p>
          <p>
	    Own Id: OTP-16617</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.24</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fix a performance problem when using internal general
	    references in XML content. </p>
          <p>
	    Own Id: OTP-16578 Aux Id: ERIERL-482 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.23</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Replace a local floor/1 function with erlang:floor/1.
	    </p>
          <p>
	    Own Id: OTP-16324</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Implement handling of parsed entity content and some
	    other improvements. </p> <list> <item>Updated the SAX
	    test-suite (xmerl_sax_std_SUITE) to more recent
	    version</item> <item>Test now uses its own data directory
	    since the non-SAX xmerl test suite (xmerl_std_SUITE) uses
	    a different version of the other suite</item>
	    <item>Canonical XML checks have been added to all tests
	    that apply. Canonical, as it applies here, is regular
	    canonical XML with the addition of notation declarations
	    if any. Output must match byte-for-byte.</item>
	    <item>External entities implemented, both as markup and
	    replacement text</item> <item>Cyclic references are
	    checked at the end of the DTD parse; also when a
	    reference is found</item> <item>Default attributes are
	    reported in events</item> <item>Attributes are whitespace
	    normalized if their type demands it</item> <item>External
	    entities can have a different encoding than the base
	    document and will be transcoded to the document
	    encoding</item> <item>Conditional sections
	    (IGNORE/INCLUDE) handling has been added to DTD
	    parsing</item> <item>Element content-model is now checked
	    for well-formed-ness</item> <item>A few missing function
	    clauses have been added</item> </list>
          <p>
	    Own Id: OTP-16339</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.22</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    <c>xmerl_sax_parser</c> crashed during charset detection
	    when the xml declarations attribute values was missing
	    the closing quotation (&apos; or &quot;).</p>
          <p>
	    Own Id: OTP-15826</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.21</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    A typo in an error printout has been fixed.</p>
          <p>
	    Own Id: OTP-14703 Aux Id: PR-1964 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.20.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    <c>xmerl_sax_parser</c> crashed during charset detection
	    when the xml declarations attribute values was missing
	    the closing quotation (&apos; or &quot;).</p>
          <p>
	    Own Id: OTP-15826</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.20</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Handling of character references in attributes are fixed.</p>
          <p>
	    Own Id: OTP-15684 Aux Id: ERL-837 </p>
        </item>
        <item>
          <p>
	    Normalization of whitespace characters in attributes are
	    fixed so it works when character references are used.</p>
          <p>
	    Own Id: OTP-15685 Aux Id: ERL-475 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.19</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>The charset detection parsing crash in some cases when
	    the XML directive is not syntactic correct.</p>
          <p>
	    Own Id: OTP-15492 Aux Id: ERIERL-283 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.18</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Improved documentation.</p>
          <p>
	    Own Id: OTP-15190</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.17</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix typos in documentation.</p>
          <p>
	    Own Id: OTP-15039</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.16.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>The charset detection parsing crash in some cases when
	    the XML directive is not syntactic correct.</p>
          <p>
	    Own Id: OTP-15492 Aux Id: ERIERL-283 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.16</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Removed all old unused files in the documentation.
	    </p>
          <p>
	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.15</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Improves accumulator fun in xmerl_scan so that only one
	    #xmlText record is returned for strings which have
	    character references.</p>
          <p>
	    (Thanks to Jimmy Zöger)</p>
          <p>
	    Own Id: OTP-14377 Aux Id: PR-1369 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.14</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> A couple of bugs are fixed in the sax parser
	    (xmerl_sax_parser). </p> <list> <item>The continuation
	    function was not called correctly when the XML directive
	    was fragmented. </item> <item>When the event callback
	    modules (xmerl_sax_old_dom and xmerl_sax_simple) got an
	    endDocument event at certain conditions the parser
	    crashed.</item> <item>Replaced internal ets table with
	    map to avoid table leakage.</item> </list>
          <p>
	    Own Id: OTP-14430</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.13</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The namespace_conformant option in xmerl_scan did not
	    work when parsing documents without explicit XML
	    namespace declaration.</p>
          <p>
	    Own Id: OTP-14139</p>
        </item>
        <item>
	    <p> Fix a "well-formedness" bug in the XML Sax parser so
	    it returns an error if there are something more in the
	    file after the matching document. If one using the
	    xmerl_sax_parser:stream() a rest is allowed which then
	    can be sent to a new call of xmerl_sax_parser:stream() to
	    parse next document. </p> <p> This is done to be
	    compliant with XML conformance tests. </p>
          <p>
	    Own Id: OTP-14211</p>
        </item>
        <item>
	    <p> Fixed compiler and dialyzer warnings in the XML SAX
	    parser. </p>
          <p>
	    Own Id: OTP-14212</p>
        </item>
        <item>
	    <p> Change how to interpret end of document in the XML
	    SAX parser to comply with Tim Brays comment on the
	    standard. This makes it possible to handle more than one
	    doc on a stream, the standard makes it impossible to know
	    when the document is ended without waiting for the next
	    document (and not always even that). </p> <p> Tim Brays
	    comment: </p> <p> Trailing "Misc"<br/> The fact that
	    you're allowed some trailing junk after the root element,
	    I decided (but unfortunately too late) is a real design
	    error in XML. If I'm writing a network client, I'm
	    probably going to close the link as soon as a I see the
	    root element end-tag, and not depend on the other end
	    closing it down properly.<br/> Furthermore, if I want to
	    send a succession of XML documents over a network link,
	    if I find a processing instruction after a root element,
	    is it a trailer on the previous document, or part of the
	    prolog of the next? </p>
          <p>
	    Own Id: OTP-14213</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.12</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fix a number of broken links in the xmerl
	    documentation. </p>
          <p>
	    Own Id: OTP-13880</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.11</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Internal changes</p>
          <p>
	    Own Id: OTP-13551</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.10</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Suppress Dialyzer warnings. </p>
          <p>
	    Own Id: OTP-12862</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.9</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Removed the built-in definitions of xml.xsd from the
	    xmerl_xsd module.</p>
          <p>
	    Own Id: OTP-13070</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.8</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Remove compiler warnings in xmerl. </p>
          <p>
	    Own Id: OTP-12689</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Application upgrade (appup) files are corrected for the
	    following applications: </p>
          <p>
	    <c>asn1, common_test, compiler, crypto, debugger,
	    dialyzer, edoc, eldap, erl_docgen, et, eunit, gs, hipe,
	    inets, observer, odbc, os_mon, otp_mibs, parsetools,
	    percept, public_key, reltool, runtime_tools, ssh,
	    syntax_tools, test_server, tools, typer, webtool, wx,
	    xmerl</c></p>
          <p>
	    A new test utility for testing appup files is added to
	    test_server. This is now used by most applications in
	    OTP.</p>
          <p>
	    (Thanks to Tobias Schlager)</p>
          <p>
	    Own Id: OTP-11744</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fixed a problem in the SAX parser when the header of
	    the next document was appearing in the buffer when using
	    xmerl_sax_parser:stream/2 function. </p>
          <p>
	    Own Id: OTP-11551 Aux Id: seq12505 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> The default encoding of Erlang files has been changed
	    from ISO-8859-1 to UTF-8. </p> <p> The encoding of XML
	    files has also been changed to UTF-8. </p>
          <p>
	    Own Id: OTP-10907</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Teach xmerl_xpath to resolve context namespaces in more
	    cases. Thanks to Daniel White.</p>
          <p>
	    Own Id: OTP-11461</p>
        </item>
        <item>
          <p>
	    Avoid serialization on code_server in xmerl:export().
	    Thanks to Richard Carlsson.</p>
          <p>
	    Own Id: OTP-11463</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Fixed various typos in xmerl documentation. Thanks to
	    David Welton.</p>
          <p>
	    Own Id: OTP-11224</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Where necessary a comment stating encoding has been
	    added to Erlang files. The comment is meant to be removed
	    in Erlang/OTP R17B when UTF-8 becomes the default
	    encoding. </p>
          <p>
	    Own Id: OTP-10630</p>
        </item>
        <item>
	    <p> Some examples overflowing the width of PDF pages have
	    been corrected. </p>
          <p>
	    Own Id: OTP-10665</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fix a continuation bug when a new block of bytes is
	    to be read during parsing of a default declaration. </p>
          <p>
	    Own Id: OTP-10063 Aux Id: seq12049 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Add missing spaces in xmerl doc (Thanks to Ricardo
	    Catalinas Jiménez)</p>
          <p>
	    Own Id: OTP-9873</p>
        </item>
        <item>
	    <p> Fixed a continuation error in the sax parser and
	    added latin1 as recognized encoding (not only the
	    iso-8859 variants). </p>
          <p>
	    Own Id: OTP-9961</p>
        </item>
        <item>
	    <p> Removed the unused file xmerl_xlink.hrl. Thanks to
	    Vlad Dumitrescu for informing us about it. </p>
          <p>
	    Own Id: OTP-9965</p>
        </item>
        <item>
	    <p> xmerl couldn't handle comments inside a type
	    specification. </p>
          <p>
	    Own Id: OTP-10023</p>
        </item>
        <item>
	    <p> Fix some small errors in the sax parser: error
	    message bug, removal of trailing blanks in DTD element
	    definitions and an documentation error of the startDTD
	    event in xmerl_sax_parser module. </p>
          <p>
	    Own Id: OTP-10026</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fix character check of non-characters due to change
	    in unicode module. </p>
          <p>
	    Own Id: OTP-9670</p>
        </item>
        <item>
          <p>
	    Treat , as special in xmerl_xpath_scan. (Thanks to Anneli
	    Cuss)</p>
          <p>
	    Own Id: OTP-9753</p>
        </item>
        <item>
	  <p> 
	    Fix bug in namespace handling for attributes when the  
            <c>namespace_conformant</c> flag is set to true. </p>
          <p>
	    Own Id: OTP-9821</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Updates to the xml scanner </p> <list> <item>
	    <p>xmerl_scan is now returning xmlComment records in the
	    output.<br/><br/> Functions <c>xmerl_scan:file/2</c> and
	    <c>xmerl_scan:string/2</c> now accepts a new option
	    <c>{comments, Flag}</c> for filtering of comments.<br/>
	    Default (<c>true</c>) is that <c>#xmlComment</c> records
	    are returned from the scanner and this flag should be set
	    to false if one don't want comments in the output. </p>
	    </item> <item> <p>Add <i>default_attrs</i>
	    option<br/><br/> When <i>default_attrs</i> is <c>true</c>
	    any attribute with a default value defined in the doctype
	    but not in the attribute axis of the currently scanned
	    element is added to it. </p> </item> <item> <p>Allow
	    whole documents to be returned<br/><br/> Functions
	    <c>xmerl_scan:file/2</c> and <c>xmerl_scan:string/2</c>
	    now accepts a new option <c>{document, true}</c> to
	    produce a whole document as a <c>xmlDocument</c> record
	    instead of just the root element node.<br/> This option
	    is the only way to get to the top-level comments and
	    processing instructions without hooking through the
	    customization functions. Those nodes are needed to
	    implement [Canonical XML][c14n-xml] support.<br/>
	    [c14n-xml]:
	    http://www.w3.org/TR/2008/PR-xml-c14n11-20080129/
	    <i>Canonical XML</i> </p> </item> <item><p>Parents and
	    namespace are tracked in <c>#xmlAttribute</c>
	    nodes</p></item> <item><p>Parents are tracked in
	    <c>#xmlPI</c> nodes</p></item> <item><p>Set <c>vsn</c>
	    field in <c>#xmlDecl</c> record</p></item> <item><p>Fix
	    namespace-conformance constraints<br/><br/> See
	    [Namespaces in XML 1.0 (Third Edition)][1]: The prefix
	    xml is by definition bound to the namespace name
	    http://www.w3.org/XML/1998/namespace. It MAY, but need
	    not, be declared, and MUST NOT be bound to any other
	    namespace name. Other prefixes MUST NOT be bound to this
	    namespace name, and it MUST NOT be declared as the
	    default namespace.<br/> The prefix xmlns is used only to
	    declare namespace bindings and is by definition bound to
	    the namespace name http://www.w3.org/2000/xmlns/. It MUST
	    NOT be declared . Other prefixes MUST NOT be bound to
	    this namespace name, and it MUST NOT be declared as the
	    default namespace. Element names MUST NOT have the prefix
	    xmlns.<br/> In XML documents conforming to this
	    specification, no tag may contain two attributes which
	    have identical names, or have qualified names with the
	    same local part and with prefixes which have been bound
	    to namespace names that are identical.<br/> [1]
	    http://www.w3.org/TR/REC-xml-names/ </p></item> </list>
	    <p> Updates of xmerl's Xpath functionality. </p> <list>
	    <item><p>Add <c>#xmlPI</c> support to
	    xmerl_xpath:write_node/1</p></item> <item><p>Fix
	    processing-instruction(name?)</p></item> <item><p>Fix
	    path filters, support more top-level primary
	    expressions</p></item> <item><p>Accumulate comments in
	    element nodes</p></item> <item><p>Implement namespace
	    axis<br/><br/> Namespace nodes are represented as
	    <c>#xmlNsNode</c> records. Now that the namespace axis is
	    correctly implemented, attributes nodes corresponding to
	    attributes that declare namespaces are ignored.<br/> See
	    [5.3 Attribute Nodes][xpath-5.3]:<br/> There are no
	    attribute nodes corresponding to attributes that declare
	    namespaces.<br/> [xpath-5.3]:
	    http://www.w3.org/TR/xpath/#attribute-nodes </p></item>
	    </list> <p> (Thanks to Anthony Ramine) </p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-9664</p>
        </item>
        <item>
          <p>
	    Eliminate use of deprecated regexp module</p>
          <p>
	    Own Id: OTP-9810</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.10</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fixed a schema search bug in xmerl_xsd. </p> <p> A
	    new flag was needed in the xsd_state record so if the
	    state is saved there is an incompatibility and a state
	    conversion is needed. </p>
          <p>
	    *** INCOMPATIBILITY with R14B03 ***</p>
          <p>
	    Own Id: OTP-9410</p>
        </item>
        <item>
	    <p> Fixed xmerl_scan problems with entities in attribute
	    values. </p>
          <p>
	    Own Id: OTP-9411</p>
        </item>
        <item>
	    <p> Streaming bug in xmerl_scan. </p> <p> If the
	    continuation_fun runs out of input at the end of an
	    attribute value then it crashed. (Thanks to Simon
	    Cornish) </p>
          <p>
	    Own Id: OTP-9457</p>
        </item>
        <item>
          <p>
	    Fixed xmerl_ucs UCS2 little endian en/decoding</p>
          <p>
	    Corrected number of shift bytes in
	    xmerl_ucs:char_to_ucs2le and recursive call from
	    from_ucs2le to from_ucs4le. (Thanks to Michal Ptaszek)</p>
          <p>
	    Own Id: OTP-9548</p>
        </item>
        <item>
          <p>
	    Add latin9 (iso-8859-15) support in xmerl_ucs (Thanks to
	    David Julien)</p>
          <p>
	    Own Id: OTP-9552</p>
        </item>
        <item>
          <p>
	    Improve spelling throughout documentation, code comments
	    and error messages</p>
          <p>
	    Own Id: OTP-9555</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.9</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix minor typos and improve punctuation in the
	    xmerl_xpath @doc comment (Thanks to Marcus Marinelli)</p>
          <p>
	    Own Id: OTP-9187</p>
        </item>
        <item>
          <p>
	    Prevent xmerl from over-normalizing character references
	    in attributes</p>
          <p>
	    Section 3.3.3 of the XML Recommendation gives the rules
	    for attribute-value normalization. One of those rules
	    requires that character references not be re-normalized
	    after being replaced with the referenced characters.
	    (Thanks to Tom Moertel)</p>
          <p>
	    Own Id: OTP-9274</p>
        </item>
        <item>
	    <p> Fixed the default encoding option in SAX parser. </p>
          <p>
	    Own Id: OTP-9288</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Added the xmerl test suites and examples to the open
	    source distribution. </p>
          <p>
	    Own Id: OTP-9228</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.8</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> The function xmerl_lib:expand_content/1 is mainly for
	    expanding Simple XML, but can also handle xmerl records.
	    This patch fixes an omission that caused expand_content/1
	    to not maintain the parents list when expanding
	    #xmlElement{} records. (Thanks to Ulf Wiger) </p>
          <p>
	    Own Id: OTP-9034</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Removed some dialyzer warnings. </p>
          <p>
	    Own Id: OTP-9074</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> An empty element declared as simpleContent was not
	    properly validated. </p>
          <p>
	    Own Id: OTP-8599</p>
        </item>
        <item>
	    <p> Fix format_man_pages so it handles all man sections
	    and remove warnings/errors in various man pages. </p>
          <p>
	    Own Id: OTP-8600</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Fix entity checking so there are no fatal errors for
	    undefined entities when option skip_external_dtd is used.
	    </p>
          <p>
	    Own Id: OTP-8947</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Fixed problem with hex entities in UTF-8 documents:
	    When a document was in UTF-8 encoding, xmerl_scan
	    improperly replaced hex entities by the UTF-8 bytes
	    instead of returning the character, as it does with
	    inline UTF-8 text and decimal entities. (Thanks to Paul
	    Guyot.) </p>
          <p>
	    Own Id: OTP-8697</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            All Erlang files are now built by the test server instead of the test directory Makefile.
          </p>
          <p>
            Erlang files in data directories are now built by the test suites instead of using 
            prebuilt versions under version control.
          </p>
          <p>
            Removed a number of obsolete guards.
          </p>
          <p>
            Own Id: OTP-8537
          </p>
        </item>
        <item>
          <p>
           An empty element declared as a simpleContent was not properly validated.
          </p>
          <p>
            Own Id: OTP-8599
          </p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
            <p>Updated the documentation Makefile to work with the 
               new documentation build process.</p>
            <p>
            Own Id: OTP-8343</p>
        </item>
      </list>
    </section>

</section>


<section><title>Xmerl 1.2.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            A continuation clause of <c>parse_reference/3</c> had
            its parameters in wrong order.</p>
          <p>
            Own Id: OTP-8251 Aux Id: seq11429 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            A new option to turn off the parsing of an external DTD
            is added to <c>xmerl_sax_parser:file/2</c> and
            <c>xmerl_sax_parser:stream/2</c>
            (<c>skip_external_dtd</c>).</p>
          <p>
            Own Id: OTP-8252 Aux Id: seq11432 </p>
        </item>
        <item>
          <p>
            The documentation is now built with open source tools
            (xsltproc and fop) that exists on most platforms. One
            visible change is that the frames are removed.</p>
          <p>
            Own Id: OTP-8253</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            <c>xmerl_sax_parse:stream/2</c> failed with
            <c>{fatal_error,_, "Continuation function undefined, and
            more data needed",_,_}</c> when no continuation function
            was defined even though it was a complete document as
            input.</p>
          <p>
            Own Id: OTP-8213</p>
        </item>
        <item>
          <p>
            The namespace URI supplied on unprefixed attributes in
            startElement tuples is the same as the URI for the
            default namespace. According to the standard the
            namespace for an unprefixed attribute should always has
            no value.</p>
          <p>
            Own Id: OTP-8214</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.2.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            <c>xmerl/include/xmerl.hrl</c> contained internal debug
            macros (<c>dbg/2</c> and <c>DBG/0</c>) which now is moved
            to <c>xmerl_internal.hrl</c>.
          </p>
          <p>
            Own Id: OTP-8084
          </p>
        </item>
        <item>
          <p>
            The function <c>xmerl_uri:parse/1</c> couldn't handle FTP
            URIs containing username and password. The default FTP
            port constant was also wrong. (Thanks to Steve Vinoski)
          </p>
          <p>
            Own Id: OTP-8156
          </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            The SAX parser couldn't handle consecutive documents on
            the same stream. The return values are now changed so
            they return a rest value instead of giving an error about
            "erranous information after the end tag". 
          </p>
          <p>
            This means that
            the functions <c>file/2</c> and <c>stream/2</c> now
            returns <c>{ok, EventState, Rest}</c> when the parsing is
            correct. The rest can then be used as input to a new call
            to <c>xmerl_sax_parse:stream/2</c>. If one know that it's
            just one document the rest value in the result tuple can
            be matched against <c>&lt;&lt;&gt;&gt;</c> or <c>[]</c>
            depending on if the input is in binary form or not.
          </p>
          <p>
            Own Id: OTP-8153 Aux Id: seq11388 
          </p>
        </item>
      </list>
    </section>

</section>


<section><title>Xmerl 1.2</title>
    <section><title>Improvements and New Features</title>
	<p>
        In xmerl-1.2 we have added the first Beta version of the new 
        SAX parser (module: xmerl_sax_parser), it supports XML 1.0. 
        We call it Beta due to that the validation part is not ready yet and that the 
        parser still has some known limitations (mostly in the DTD area).
        </p>
	<p>
	Known limitations: 
        </p>
        <list type="bulleted">
          <item>the external DTD in the DOCTYPE declaration is handled but other external entities are not supported.</item>
          <item>the general entity values are just checked in the structure after replacement.</item>
          <item>
             parsed entities are supported on markup declaration level (e.g. partly replacement of markup 
             declaration with PEReference is not supported).
          </item>
          <item>conditionalSect in external DTD's are not supported.</item>
          <item>recursive loops in entity declarations are not detected.</item>
        </list>
	<p>	
	 The version is increased from 1.1.12 to 1.2 is due to that the new parser
         is dependent on the Unicode support that was added in OTP R13B. The old xmerl 
         functionality is not changed.
	</p>
        <p>
            Own Id: OTP-6635
        </p>
    </section>
</section>

<section><title>Xmerl 1.1.12</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            Updated copyright notice in source files</p>
          <p>
            Own Id: OTP-7847</p>
        </item>
      </list>
    </section>

</section>
 
<section><title>Xmerl 1.1.11</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            An empty element with a complexType and simpleContent was
            not properly validated. This error is now corrected.</p>
          <p>
            Own Id: OTP-7736</p>
        </item>
      </list>
    </section>

</section>
 
<section><title>Xmerl 1.1.10</title>
 
    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
           Changed the examples in Customization Functions Tutorial
           to correct Erlang code.
          </p>
          <p>
            Own Id: OTP-6053
          </p>
        </item>
        <item>
          <p>
            Some XPath errors solved, typo in compare function '!=',
            error in <c>id()</c> function.</p>
          <p>
            Own Id: OTP-6792 Aux Id: seq10570 </p>
        </item>
        <item>
          <p>
            The XPath function <c>contains()</c> now implemented. See
            XPath 1.0 section 4.2.</p>
          <p>
            Own Id: OTP-6873</p>
        </item>
        <item>
          <p>
           Fixed that xmerl_xsd:process_schema/2 with {xsdbase, Dirname} failed with enoent 
           and a number of inor documentation bugs in xmerl_xsd reference manual.
          </p>
          <p>
            Own Id: OTP-7165
          </p>
        </item>
        <item>
          <p>
            Fixed xmerl_scan's problem with numeric character references 
            followed by UTF-8 characters in the contents.
          </p>
          <p>
            Own Id: OTP-7430
          </p>
        </item>
        <item>
          <p>
           Fixed an incorrect guard for xmerl_scan:to_ucs/2.
          </p>
          <p>
            Own Id: OTP-7473
          </p>
        </item>
        <item>
          <p>
            Some bug corrections of xmerl XPath implementation, most
            provided by Matthew Dempsky.</p>
          <p>
            Own Id: OTP-7496</p>
        </item>
        <item>
          <p>
            Now with <c>string()</c> and <c>name()</c> all XPath
            functions are implemented. The string representation of
            QName by <c>name()</c> is "{Namespace URI}local-name".</p>
          <p>
            Own Id: OTP-7510</p>
        </item>

      </list>
    </section>
 
</section>


<section><title>Xmerl 1.1.9</title>
 
    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            A number of minor scanner faults have got more clear error messages. 
          </p>
          <p>
            Own Id: OTP-5998, Aux Id: seq9803
          </p>
        </item>
        <item>
          <p>
           An example error in the Xmerl Users Guide is corrected.
          </p>
          <p>
            Own Id: OTP-6947
          </p>
        </item>
        <item>
          <p>
           When xmerl_xsd:validate was executed the schema table in the state 
           was deleted and next execution would fail. This is now corrected.
          </p>
          <p>
            Own Id: OTP-7288
          </p>
        </item>
      </list>
    </section>
 
</section>


<section><title>Xmerl 1.1.8</title>
 
    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            A Kleene Closure child in a sequence consumed all
            following children. This problem has been fixed.</p>
          <p>
            Own Id: OTP-7211</p>
        </item>
        <item>
          <p>
            Now validating xhtml1-transitional.dtd. A certain
            contentspec with a succeeding choice, that didn't match
            all content, followed by other child elements caused a
            failure. This is now corrected.</p>
          <p>
            Own Id: OTP-7214</p>
        </item>
      </list>
    </section>
 
</section>

<section><title>Xmerl 1.1.7</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            xmerl's schema validation now takes default facets into
            account</p>
          <p>
            Own Id: OTP-7190</p>
        </item>
      </list>
    </section>

</section>

<section><title>Xmerl 1.1.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            Parsing XML with option <c>{validation,schema}</c> is now
            corrected.</p>
          <p>
            Own Id: OTP-6773</p>
        </item>
        <item>
          <p>
            union type is now supported</p>
          <p>
            Own Id: OTP-6877 Aux Id: seq10755 </p>
        </item>
        <item>
          <p>
            Now xmerl validates as expected when a sequence has a
            present group member and a following element.</p>
          <p>
            Own Id: OTP-6910</p>
        </item>
      </list>
    </section>

</section>

  <section>
    <title>Xmerl 1.1.5</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>The head of a substitutionGroup may have type anyType and
            thus allow members of any type. This was an oversight, but is
            now corrected.</p>
          <p>Own Id: OTP-6720</p>
        </item>
        <item>
          <p>A recursive group reference in a redefine refers to the
            definition in the redefined schema. See 4.2.2 in
            XMLSchema part1 "Schema Representation Constraint:
            Individual Component Redefinition" bullet 2.</p>
          <p>Own Id: OTP-6739</p>
        </item>
        <item>
          <p>Solved some content model problems, for instance in some
            cases failed when more than one choice.</p>
          <p>Own Id: OTP-6752</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.1.4</title>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>An additional format is possible for the simple syntax:
            <c>{Fun, State}</c>. The fun should retrieve the
            replacement in simple syntax format. The semantics of
            fun: <c>fun(State) -> code that creates replacement, then returns {SimpleSyntax,NewState} | done </c></p>
          <p>Own Id: OTP-6679</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.1.3</title>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Memory consumption decreased: moved transforming from
            utf-8 to unicode from an extra pass of the document to
            the occasion when a character is parsed. Removed use of
            lists:subtract. Those changes also speeds up parsing in
            some scenarios.</p>
          <p>Own Id: OTP-6599 Aux Id: seq10552 </p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.1.2</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Schema processor reprocessed schemas that already were
            processed, using process_schemas on a system of schemas
            with circular dependencies.</p>
          <p>Own Id: OTP-6460 Aux Id: seq10564 </p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Dialyzer warnings now removed, i.e. dead code have been
            removed.</p>
          <p>Own Id: OTP-6507</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.1.1</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Bug in xmerl removed so that simple syntax element
            content is exported correctly.</p>
          <p>Own Id: OTP-6402 Aux Id: OTP-6099</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.1</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Xmerl failed to parse and export with the sax_file
            front-end. Therefore hook function calls were added in the
            parser and handling of text content were changed.</p>
          <p>Own Id: OTP-6043</p>
        </item>
        <item>
          <p>Bug in xmerl removed so that simple syntax element
            content is exported correctly.</p>
          <p>Own Id: OTP-6099</p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>xmerl now supports XMLSchema validation. Documentation in
            reference manual for xmerl. The release of XMLSchema
            validation should be considered as a beta release. The
            user interface may still be adjusted in a coming
            release. Opinions and evaluations are welcome.</p>
          <p>Own Id: OTP-6401</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>xmerl 1.0.5</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Code that caused compiler warnings has been reviewed.</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>xmerl 1.0.4</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>xmerl behaved strange parsing a XML-document with a
            copyright sign in a comment.</p>
          <p>Own Id: OTP-5599</p>
        </item>
        <item>
          <p>Line count for error messages in DTD improved, still
            problem because of ENTITY expansions. Didn't delete
            digraphs after recursion test. Now correctly parsing of
            declaration separators [28a-b].</p>
          <p>Own Id: OTP-5718</p>
        </item>
        <item>
          <p>Failed to validate a XML file with a content spec that
            had a choice of which one element was a sequence with
            optional elements, and all elements of that sequence were
            missing</p>
          <p>Own Id: OTP-5734</p>
        </item>
        <item>
          <p>Location paths for document root and attributes is now
            working as expected.</p>
          <p>Own Id: OTP-5895</p>
        </item>
        <item>
          <p>Now has the last() predicate in the XPATH modules the
            properties specified in ch 2.4 in the XPATH spec, i.e. if
            last() evaluates to a number other than the context
            position it is false, otherwise true.</p>
          <p>Own Id: OTP-5902</p>
        </item>
        <item>
          <p>The location path of a single wildcard now only selects
            element nodes.</p>
          <p>Own Id: OTP-5905</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.0.3</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Removed call of undefined function in xmerl_lib.</p>
          <p>Own Id: OTP-5587</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.0.2</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Better identification of errors in xml code.</p>
          <p>Own Id: OTP-5498 Aux Id: seq9803 </p>
        </item>
        <item>
          <p>Some minor bugs fixed.</p>
          <p>Own Id: OTP-5500</p>
        </item>
        <item>
          <p>Parser failed on PE reference as EnumeratedType AttType,
            now corrected.</p>
          <p>Own Id: OTP-5531</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Xmerl 1.0.1</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Fixed bug in xmerl_xpath. Xpath expressions that select
            nodes of type text() didn't work, like "context/text()",
            "child::text()", "descendant::text()".</p>
          <p>Own Id: OTP-5268 Aux Id: seq9656 </p>
        </item>
        <item>
          <p>Minor bugs fixed.</p>
          <p>Own Id: OTP-5301</p>
        </item>
      </list>
    </section>
    <!-- p>There are also release notes for <url href="notes_history.html">older versions</url>.</p -->
  </section>

  <section>
    <title>Xmerl 1.0</title>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>The OTP release of xmerl 1.0 is mainly the same as
            xmerl-0.20 of http://sowap.sourceforge.net/. It is
            capable of parsing XML 1.0. There have only been minor
            improvements: Some bugs that caused an unexpected crash
            when parsing bad XML. Failure report that also tells
            which file that caused an error.</p>
          <p>Own Id: OTP-5174</p>
        </item>
      </list>
    </section>
  </section>
</chapter>
