Unfortunately, even Properties aren't fully reliable. The Tamil pulli for eg., does not have the Alphabetic property despite being a central part of the Tamil a

Unfortunately, even Properties aren't fully reliable. The Tamil pulli for eg., does not have the Alphabetic property despite being a central part of the Tamil alphabet, pretty much due to historical accident: other Indic languages have a similar looking Virama character that aren't alphabetic, and pulli (despite being a separate, unrelated character) was lumped in with those. When I tried to raise this in the mailing list and get it rectified, the response I got was pretty much that many properties need language-specific processing anyway, and shouldn't be relied upon fully, and so this wasn't worth fixing. [1] https://util.unicode.org/UnicodeJsps/character.jsp?a=0BCD&B1=Show https://util.unicode.org/UnicodeJsps/character.jsp?a=0BCD&B1...