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Sequences of characters which represent the sameĪbstract character, and which when correctly displayed should alwaysīehavior. Canonical equivalence is a fundamental equivalency between characters or The Unicode Standard defines two formal types of equivalence between characters:Īnd compatibility equivalence. 1.1 Canonical and Compatibility Equivalence Section 2.12, Equivalent Sequences and Normalization in Sequences for Unicode strings and the need for normalization, see Of the Stream-Safe Text Format and of the Normalization Process for Stabilizedįor the formal specification of the Unicode NormalizationĪlgorithm, see Section 3.11, Normalization Forms inįor a general introduction to the topic of equivalent This document also provides the formal specification With further explanations and implementation notes. It describes canonical and compatibility equivalenceĪnd the four normalization forms, providingĮxamples, and elaborates on the formal specification of Unicode normalization, This annex provides subsidiary information about
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The version number of a UAX document corresponds to the version of the Unicode Standard of which it forms a part. The Unicode Standard may require conformance to normativeĬontent in a Unicode Standard Annex, if so specified in the Conformance chapter of that version Is published online as a separate document.
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This is a stable document and may be used as reference material or cited asĪ normative reference by other specifications.Ī Unicode Standard Annex (UAX) forms an integral part of the Unicode Standard, but Parties, and has been approved for publication by the Unicode Consortium.
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This document has been reviewed by Unicode members and other interested Regarding normalization of Unicode text, and information about conformance This annex also provides examples, additional specifications Strings have a unique binary representation. When implementations keep strings in a normalized form, they can be assured that equivalent This annex describes normalization forms for Unicode text. Unicode® Standard Annex #15 Unicode Normalization Forms Version