Implementation - continued

• Most XML features come from libxml2 (XML parser, validators, XPath query engine, XSLT)

• Internally, XSH works with a DOM representation

• Lots of magic involved in the move/copy operations and similar, such as automatic node-type conversion

• Lots of magic in Perl bindings for libxml2, too

• The XPath completion is implemented as a lazy regexp-based parser for “reversed-XPath”