[Pharo-users] Testing a Unicode Character's Category

The Pharo image has a table of Unicode Character Categories in a class variable GeneralCategory of class Unicode. But there do not seem to be many methods to interpret this data. For example, while there is a method Unicode class >> #isDigit: aCharacter that checks if the Unicode category of aCharacter is Nd, and Unicode class >> #isLetter: aCharacter that checks if aCharacter is in one of the letter categories, there does not seem to be a general way of asking “what is the category of this character”. I want to check if a character is a mathematical symbol, that is, if it is in the Unicode Category Sm. What’s the right way of doing this? Would it be reasonable to add a method Unicode class >> #category: aCharacter that answers one of the 29 category symbols #Cc to #Zs? Or “is” methods for each category? Andrew