Talk:Unicode Free Operator

--Alexander Kogtenkov 15:00, 27 May 2010 (UTC) Maybe it makes sense to look at the character categories.

Clearly the operators cannot include identifier characters. And the latter can consist, as far as I understand, from categories L (letter), M (mark), N (number), Pc (punctuation connector). Now the operators cannot include categories C (other) and Z (separator) since they are not printable. The remaining characters can be used to form the operators.

--Ted 16:08, 27 May 2010 (UTC) I feel that the categories are not clear to follow for the purpose of narrowing operator characters. For example, ⁀ (CHARACTER TIE) can be a good operator which belongs to Pc. And do you think C (other), for example Cf (Other, Format), can not be part of an operator? A standalone Cf character is indeed not printable, but it actually takes effect on the style of other characters. So I think some Cf characters can be allowed as part of an operator.

--Alexander Kogtenkov 16:43, 27 May 2010 (UTC) Well, we can extend the list of characters for operators, but my idea was first to exclude anything that cannot be used in operators. As to formatting characters and Pc, I'm not quite sure, because they can also be applied to non-operator characters. So, it might be better to exclude them as well to avoid any confusion in the future.