Hi Tim,
Does BaseX support any Unicode block properties, such as \p{InCombiningDiacriticalMarks}, in regex functions? \p{Mn} works, but \p{InCombiningDiacriticalMarks} doesn't seem to.
Yes, it does. The confusion may have been caused by a little typo [1]; try this:
matches('̀', '\p{IsCombiningDiacriticalMarks}')
Best, Christian