Halfwidth and Fullwidth Forms (Unicode block): Difference between revisions

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'''Halfwidth and Fullwidth Forms''' is the name of a [[Unicode block]] U+FF00&ndash;FFEF, provided so that older encodings containing both [[Halfwidth and fullwidth forms|halfwidth and fullwidth]] characters can have lossless translation to/from Unicode. It is the second-to-last block of the [[Basic Multilingual Plane]], followed only by the short [[Specials (Unicode block)|Specials]] block at U+FFF0&ndash;FFFF. Its block name in Unicode 1.0 was '''Halfwidth and Fullwidth Variants'''.<ref>{{cite web |url=https://www.unicode.org/versions/Unicode1.0.0/CodeCharts2.pdf |work=The Unicode Standard |version=version 1.0 |title=3.8: Block-by-Block Charts |publisher=[[Unicode Consortium]]}}</ref>

Range U+FF01&ndash;FF5E reproduces the characters of [[ASCII]] 21 to 7E as fullwidth forms. U+FF00 does not correspond to a fullwidth ASCII 20 (space character), since that role is already fulfilled by U+3000 "[[ideographic space]]".

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An additional variant is defined for a fullwidth [[slashed zero|zero with a short diagonal stroke]]: U+FF10 FULLWIDTH DIGIT ZERO, U+FE00 VS1 ({{not a typo|０&#xfe00;}}).<ref>{{cite web|url=https://www.unicode.org/L2/L2015/15268-slashed-zero.pdf|title=L2/15-268: Proposal to Represent the Slashed Zero Variant of Empty Set|date=2015-10-30|first1=Barbara|last1=Beeton|first2=Asmus|last2=Freytag|first3=Laurențiu|last3=Iancu|first4=Murray|last4=Sargent}}</ref><ref name="stdvar"/>

==History==