Test, validate and match regular expressions
Matches a Wikisource ProofreadPage <pages> tag that transcludes pages 3 through 8 from the DjVu index file 'La Divina Commedia Napoletano Domenico Jaccarino-Nfierno.djvu', capturing the filename and the from/to page numbers while requiring empty fromsection/tosection attributes. Intended for migration/cleanup tasks rewriting legacy <pages> inclusion syntax (e.g., converting it to <iwpage>) on Italian Wikisource.