GitHub - d1vanov/basic-xml-syntax-highlighter: Basix XML syntax highlighter in C++/Qt (subclass of QSyntaxHighlighter). Uses simple regexes to highlight not very complicated XML content.
XML/HTML Syntax Highlighter in PHP | OpenWeb Solutions, LLC
eclipse - How do I view XML files with simple syntax highlighting? - Stack Overflow
SyntaxHighlighter Evolved Plugin Adds Gutenberg Support – WP Tavern