github.com/beevik/etree

Changes

• Improve efficiency of Element.Text and Element.Tail.

Breaking changes

• To address a security issue, it was necessary to add a MaxDepth option to
  ReadSettings to limit the depth of XML trees during parsing. A generous
  default value of 1024 was chosen to avoid breaking most existing code.
  However, if your code is processing XML hierarchies with a depth greater
  than 1024, you will need to assign your Document a ReadSettings that has
  a MaxDepth set to a higher value.

Security Fixes

• Limited the depth of XML trees processed by all ReadFrom functions during
  parsing.
• Fixed a CompilePath index-out-of-range panic that could be caused by a
  missing path filter key.
• Sanitized the contents of XML text, comment, ProcInst and Directive tokens
  provided by the user.

Changes

• Added new iterator versions of existing functions that return slices of Element pointers: ChildElementsSeq, SelectElementsSeq, FindElementsSeq, and FindElementsPathSeq.
• Improved performance of functions that return a single element.
• Because of its use of iterators, this package now requires go 1.23 or later.

Fixes

• Fixed a bug in InsertChildAt.

Changes

• Added Element function CreateChild, which calls a continuation function
  after creating and adding a child element.

Fixes

• Removed a potential conflict between two ReadSettings values. When
  AttrSingleQuote is true, CanonicalAttrVal is forced to be false.

Updates

• Minimal go version updated to 1.21.
• Default-initialized CharsetReader causes same result as NewDocument().
• When reading an XML document, attributes are parsed more efficiently.

New Features

• Add AutoClose option to ReadSettings.
• Add ValidateInput to ReadSettings.
• Add NotNil function to Element.
• Add NextSibling and PrevSibling functions to Element.

New Features

• Add support for double-quotes in filter path queries.
• Add PreserveDuplicateAttrs to ReadSettings.
• Add ReindexChildren to Element.

Full Changelog: v1.2.0...v1.3.0

New Features

• Add the ability to write XML fragments using Token WriteTo functions.
• Add the ability to re-indent an XML element as though it were the root of the document.
• Add a ReadSettings option to preserve CDATA blocks when reading an XML document.

New Features

• Add the ability to preserve whitespace in leaf elements during indent.
• Add the ability to suppress a document-trailing newline during indent.
• Add choice of XML attribute quoting style (single-quote or double-quote).

Removed Features

• Removed the CDATA preservation change introduced in v1.1.3. It was implemented in a way that broke the ability to process XML documents encoded using non-UTF8 character sets.

• XML reads now preserve CDATA sections instead of converting them to standard character data.

• Fixed a path parsing bug.
• The Element.Text function now handles comments embedded between character data spans.

• Updated go version in go.mod to 1.20