Bugzilla – Bug 20623
[F+O 3.0] Circled digits
Last modified: 2013-04-23 13:07:45 UTC
The format-integer specification mentions, by way of an example:
For example, the format token ① (circled digit one, ①) has a range of 1 to 20 imposed by the Unicode character repertoire.
This statement was true in earlier versions of Unicode but is no longer true today. For example, Unicode 4.0 introduced circled numbers 21 to 35 in positions x3251 to x325f.