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Release Notes
Version 1.2.4

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# 1 Xmerl Release Notes

This document describes the changes made to the Xmerl application.

### 1.1 Xmerl 1.2.4

#### Improvements and New Features

- Updated the documentation Makefile to work with the new documentation build process.

  Own Id: OTP-8343

### 1.2 Xmerl 1.2.3

#### Fixed Bugs and Malfunctions

- A continuation clause of parse_reference/3 had it's parameters in wrong order.

  Own Id: OTP-8251 Aux Id: seq11429

#### Improvements and New Features

- A new option to turn off the parsing of an external DTD is added to xmerl_sax_parser:file/2 and xmerl_sax_parser:stream/2 (skip_external_dtd).

  Own Id: OTP-8252 Aux Id: seq11432

- 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.

  Own Id: OTP-8253

### 1.3 Xmerl 1.2.2

#### Fixed Bugs and Malfunctions

- xmerl_sax_parse:stream/2 failed with {fatal_error,_, "Continuation function undefined, and more data needed",_,_} when no continuation function was defined even though it was a complete document as input.

  Own Id: OTP-8213

- 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.

  Own Id: OTP-8214

### 1.4 Xmerl 1.2.1

#### Fixed Bugs and Malfunctions

- xmerl/include/xmerl.hrl contained internal debug macros (dbg/2 and DBG/0) which now is moved to xmerl_internal.hrl.

  Own Id: OTP-8084

- The function xmerl_uri:parse/1 couldn't handle FTP URIs containing username and password. The default FTP port constant was also wrong. (Thanks to Steve Vinoski)

  Own Id: OTP-8156

#### Improvements and New Features

- 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".

  This means that the functions file/2 and stream/2 now returns {ok, EventState, Rest} when the parsing is correct. The rest can then be used as input to a new call to xmerl_sax_parse:stream/2. If one know that it's just one document the rest value in the result tuple can be matched against <<>> or [] depending on if the input is in binary form or not.

  Own Id: OTP-8153 Aux Id: seq11388

### 1.5 Xmerl 1.2

#### Improvements and New Features

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).

Known limitations:

- the external DTD in the DOCTYPE declaration is handled but other external entities are not supported.
- the general entity values are just checked in the structure after replacement.
- parsed entities are supported on markup declaration level (e.g. partly replacement of markup declaration with PEReference is not supported).
- conditionalSect in external DTD's are not supported.
- recursive loops in entity declarations are not detected.

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.

Own Id: OTP-6635

### 1.6 Xmerl 1.1.12

#### Improvements and New Features

- Updated copyright notice in source files

  Own Id: OTP-7847

### 1.7 Xmerl 1.1.11

#### Fixed Bugs and Malfunctions

- An empty element with a complexType and simpleContent was not properly validated. This error is now corrected.

  Own Id: OTP-7736

### 1.8 Xmerl 1.1.10

#### Fixed Bugs and Malfunctions

- Changed the examples in Customization Functions Tutorial to correct Erlang code.

  Own Id: OTP-6053

- Some XPath errors solved, typo in compare function '!=', error in id() function.

  Own Id: OTP-6792 Aux Id: seq10570

- The XPath function contains() now implemented. See XPath 1.0 section 4.2.

  Own Id: OTP-6873

- 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.

  Own Id: OTP-7165

- Fixed xmerl_scan's problem with numeric character references followed by UTF-8 characters in the contents.

  Own Id: OTP-7430

- Fixed an incorrect guard for xmerl_scan:to_ucs/2.

  Own Id: OTP-7473

- Some bug corrections of xmerl XPath implementation, most provided by Matthew Dempsky.

  Own Id: OTP-7496

- Now with string() and name() all XPath functions are implemented. The string representation of QName by name() is "{Namespace URI}local-name".

  Own Id: OTP-7510

### 1.9 Xmerl 1.1.9

#### Fixed Bugs and Malfunctions

- A number of minor scanner faults have got more clear error messages.

  Own Id: OTP-5998, Aux Id: seq9803

- An example error in the Xmerl Users Guide is corrected.

  Own Id: OTP-6947

- When xmerl_xsd:validate was executed the schema table in the state was deleted and next execution would fail. This is now corrected.

  Own Id: OTP-7288

### 1.10 Xmerl 1.1.8

#### Fixed Bugs and Malfunctions

- A Kleene Closure child in a sequence consumed all following children. This problem has been fixed.

  Own Id: OTP-7211

- 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.

  Own Id: OTP-7214

### 1.11 Xmerl 1.1.7

#### Improvements and New Features

- xmerl's schema validation now takes default facets into account

  Own Id: OTP-7190

### 1.12 Xmerl 1.1.6

#### Fixed Bugs and Malfunctions

- Parsing XML with option {validation,schema} is now corrected.

  Own Id: OTP-6773

- union type is now supported

  Own Id: OTP-6877 Aux Id: seq10755

- Now xmerl validates as expected when a sequence has a present group member and a following element.

  Own Id: OTP-6910

### 1.13 Xmerl 1.1.5

#### Fixed Bugs and Malfunctions

- The head of a substitutionGroup may have type anyType and thus allow members of any type. This was an oversight, but is now corrected.

  Own Id: OTP-6720

- 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.

  Own Id: OTP-6739

- Solved some content model problems, for instance in some cases failed when more than one choice.

  Own Id: OTP-6752

### 1.14 Xmerl 1.1.4

#### Improvements and New Features

- An additional format is possible for the simple syntax: {Fun, State}. The fun should retrieve the replacement in simple syntax format. The semantics of fun: fun(State) -> code that creates replacement, then returns {SimpleSyntax,NewState} | done

  Own Id: OTP-6679

### 1.15 Xmerl 1.1.3

#### Improvements and New Features

- 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.

  Own Id: OTP-6599 Aux Id: seq10552

### 1.16 Xmerl 1.1.2

#### Fixed Bugs and Malfunctions

- Schema processor reprocessed schemas that already were processed, using process_schemas on a system of schemas with circular dependencies.

  Own Id: OTP-6460 Aux Id: seq10564

#### Improvements and New Features

- Dialyzer warnings now removed, i.e. dead code have been removed.

  Own Id: OTP-6507

### 1.17 Xmerl 1.1.1

#### Fixed Bugs and Malfunctions

- Bug in xmerl removed so that simple syntax element content is exported correctly.

  Own Id: OTP-6402 Aux Id: OTP-6099

### 1.18 Xmerl 1.1

#### Fixed Bugs and Malfunctions

- 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.

  Own Id: OTP-6043

- Bug in xmerl removed so that simple syntax element content is exported correctly.

  Own Id: OTP-6099

#### Improvements and New Features

- 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.

  Own Id: OTP-6401

### 1.19 xmerl 1.0.5

#### Fixed Bugs and Malfunctions

- Code that caused compiler warnings has been reviewed.

### 1.20 xmerl 1.0.4

#### Fixed Bugs and Malfunctions

- xmerl behaved strange parsing a XML-document with a copyright sign in a comment.

  Own Id: OTP-5599

- 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].

  Own Id: OTP-5718

- 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

  Own Id: OTP-5734

- Location paths for document root and attributes is now working as expected.

  Own Id: OTP-5895

- 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.

  Own Id: OTP-5902

- The location path of a single wildcard now only selects element nodes.

  Own Id: OTP-5905

### 1.21 Xmerl 1.0.3

#### Fixed Bugs and Malfunctions

- Removed call of undefined function in xmerl_lib.

  Own Id: OTP-5587

### 1.22 Xmerl 1.0.2

#### Fixed Bugs and Malfunctions

- Better identification of errors in xml code.

  Own Id: OTP-5498 Aux Id: seq9803

- Some minor bugs fixed.

  Own Id: OTP-5500

- Parser failed on PE reference as EnumeratedType AttType, now corrected.

  Own Id: OTP-5531

### 1.23 Xmerl 1.0.1

#### Fixed Bugs and Malfunctions

- Fixed bug in xmerl_xpath. Xpath expressions that select nodes of type text() didn't work, like "context/text()", "child::text()", "descendant::text()".

  Own Id: OTP-5268 Aux Id: seq9656

- Minor bugs fixed.

  Own Id: OTP-5301

### 1.24 Xmerl 1.0

#### Improvements and New Features

- 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.

  Own Id: OTP-5174