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Scala XML Changes

2.0.0-M1 (2019-10-21)

Not binary compatible with Scala XML 1.2.0.

Published for Scala 2.12, 2.13 and Scala.js 0.6, 1.0.0-M8. Artifacts are no longer published for Scala 2.11.

There have been a number of deprecated elements that have been removed, see the "Removed" section below.

Added

  • The apiURL is now published in ivy metadata so that hyperlinks exist in downstream projects that reference Scala XML in their Scaladocs.

Changed

  • Changed use of scala.collection.mutable.Stack in FactoryAdapter to a scala.collection.immutable.List. These members were affected.
    • attribStack
    • hStack
    • tagStack
    • scopeStack
  • The abstract class FactoryAdapter, see above, is used elsewhere within the library, as well, so the previous changes are also inherited by:
    • scala.xml.parsing.NoBindingFactoryAdapter implemented class
    • scala.xml.factory.XMLLoader.adapter static member

Fixed

  • Attribute order is preserved for XML elements, not reversed.
  • Don't escape quotes in scala.xml.PCData and CDATA as an XML "

Removed

Most of these deletions are of vestigial code that is either unused, of poor quality or both. Very few users of Scala XML will even notice the removed parts. Most users will not be affected.

The deletions represent about one thousand lines of code (sloc). By comparison Scala XML is 10,000 sloc, so this is about 10% reduction in sloc. The code that supports XML literals is maintained upstream in the Scala compiler, not in the Scala XML library.

  • Remove deprecated scala.xml.pull.XMLEventReader
  • Remove deprecated versions of scala.xml.Elem constructors
  • Remove deprecated scala.xml.Elem.xmlToProcess and scala.xml.Elem.processXml
  • Remove deprecated definitions under scala.xml.persistent
    • CachedFileStorage
    • Index
    • SetStorage
  • Remove scala.xml.dtd.impl.PointedHedgeExp
  • Remove scala.xml.dtd.Scanner
  • Remove scala.xml.dtd.ContentModelParser
  • Remove scala.xml.factory.Binder
  • Remove scala.xml.parsing.ValidatingMarkupHandler