The Unicode Consortium Discussion Forum

I have received a comment that those characters originate from CNS 11643, and therefore should be treated like the fullwidth versions rather than like the Basic Latin versions.

I propose the following changes to the data file:

FE50 ; cl-07, comma ; U # SMALL COMMA
FE51 ; cl-07, comma ; U # SMALL IDEOGRAPHIC COMMA
FE52 ; cl-06, fullwidthStop ; U # SMALL FULL STOP
FE53 ; cl-19.3, symbol ; U
# reserved
FE54 ; cl-05, middleDot ; U # SMALL SEMICOLON
FE55 ; cl-05, middleDot ; U # SMALL COLON
FE56 ; cl-04, dividing ; U # SMALL QUESTION MARK
FE57 ; cl-04, dividing ; U # SMALL EXCLAMATION MARK
FE58; cl-03, hyphen ; U # SMALL EM DASH
FE59 ; cl-01.2, openingBracket.round ; SB # SMALL LEFT PARENTHESIS
FE5A ; cl-02.2, closingBracket.round ; SB # SMALL RIGHT PARENTHESIS
FE5B ; cl-01.3, openingBracket.other ; SB # SMALL LEFT CURLY BRACKET
FE5C ; cl-02.3, closingBracket.other ; SB # SMALL RIGHT CURLY BRACKET
FE5D ; cl-01.3, openingBracket.other ; SB # SMALL LEFT TORTOISE SHELL BRACKET
FE5E ; cl-02.3, closingBracket.other ; SB # SMALL RIGHT TORTOISE SHELL BRACKET
FE5F ; cl-12, prefixAbbrev ; U ﹟ SMALL NUMBER SIGN
FE60 ; cl-19.3, symbol ; U # SMALL AMPERSAND
FE61 ; cl-19.3, symbol ; U # SMALL ASTERISK
FE62 ; cl-19.3, symbol ; U # SMALL PLUS SIGN
FE63 ; cl-19.3, symbol ; U # SMALL HYPHEN-MINUS
FE64 ; cl-19.3, symbol ; U # SMALL LESS-THAN SIGN
FE65 ; cl-19.3, symbol ; U # SMALL GREATER-THAN SIGN
FE66 ; cl-19.3, symbol ; U # SMALL EQUALS SIGN
FE67 ; cl-19.3, symbol ; U # reserved
FE68 ; cl-19.3, symbol ; U # SMALL REVERSE SOLIDUS
FE69 ; cl-12, prefixAbbrev ; U # SMALL DOLLAR SIGN
FE6A ; cl-13, postfixAbbrev ; U # SMALL PERCENT SIGN
FE6B ; cl-19.3, symbol ; U # SMALL COMMERCIAL AT
FE6C..FE6F ; cl-19.3, symbol ; U # reserved

That sounds right: the SMALL characters are full width but normal-sized, whereas the FULLWIDTH characters are full width and the size of an ideograph.