shiboken used XPath expressions to extract the function descriptions from the qdoc-generated WebXML. With the deprecation of QtXmlPatterns in Qt 6, libxml/xslt was used for this. A major drawback is that libxml/xslt is unable to match entities in attributes which means functions taking parameters by const-ref could not be found. This required cumbersome workarounds involving repeated searches, which still were not sufficient to find all functions. To fix this, write a WebXML parser based on QXmlStreamReader that extracts the contents of a WebXML page into some simple data structures and use those for searching. On this occasion, also use the metafunction flags to correctly match binary operator functions. This reduces the number of functions for which no documentation can be found (from ~1100 to ~800 for the qtbase repository). From the remaining functions, ~230 are functions inherited from templates, which should at least be listed. Others are caused by qdoc not finding hidden friends. The remaining usages of libxml/xslt are the doxygen parser and the documentation modifications using XSLT. Task-number: PYSIDE-1106 Change-Id: I31c045ad42948afad884f40d5bbc8bee7555859e Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>