Support for the square character for the Japanese new era
A new code point (U+32FF) will be assigned for the upcoming Japanese new era . Currently the code point is unassigned, thus various static methods in java.lang.Character class returns values for an invalid code point.
Modify the character properties for that particular code point so that it would be regarded as a Japanese square era name, similar to the one that represents Meizi (U+337E). Specifically,
Character.isDefined(0x32FF) returns 'true'.
Character.getType(0x32FF) returns Character.OTHER_SYMBOL
Character.getName(0x32FF) returns "SQUARE ERA NAME NEWERA"
Character.getDirectionality(0x32FF) returns Character.DIRECTIONALITY_LEFT_TO_RIGHT
Character.UnicodeScript(0x32FF) returns Character.UnicodeScript.COMMON
This change will not include any composition/decomposition changes. It will be included in the upcoming ICU4J changes in their version 63.
This is a behavioral change, so no spec change is anticipated.