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Many standards only support UTF-8, e.g. JSON exchange requires it (without a byte-order mark (BOM)). [29] UTF-8 is also the recommendation from the WHATWG for HTML and DOM specifications, and stating "UTF-8 encoding is the most appropriate encoding for interchange of Unicode" [4] and the Internet Mail Consortium recommends that all e‑mail ...
All printable characters in UTF-EBCDIC use at least as many bytes as in UTF-8, and most use more, due to a decision made to allow encoding the C1 control codes as single bytes. For seven-bit environments, UTF-7 is more space efficient than the combination of other Unicode encodings with quoted-printable or base64 for almost all types of text ...
In theory UTF-1 and UTF-8 could encode the original UCS-4 set with 31 bits up to 7FFFFFFF. BOCU-1 and UTF-16 can encode the modern Unicode set from U+0000 to U+10FFFF . Excluding the thirteen protected code points encoded as single octets BOCU-1 can use 256 − 13 = 243 {\displaystyle 256-13=243} octets in multi-byte encodings.
UTF-8-encoded, preceded by 32-bit integer length of string in bytes Vectors of any other type, preceded by 32-bit integer length of number of elements Tables (schema defined types) or Vectors sorted by key (maps / dictionaries)
The same character converted to UTF-8 becomes the byte sequence EF BB BF. The Unicode Standard allows the BOM "can serve as a signature for UTF-8 encoded text where the character set is unmarked". [74] Some software developers have adopted it for other encodings, including UTF-8, in an attempt to distinguish UTF-8 from local 8-bit code pages.
As of Unicode version 16.0, Cyrillic script is encoded across several blocks: . Cyrillic: U+0400–U+04FF, 256 characters; Cyrillic Supplement: U+0500–U+052F, 48 characters ...
[citation needed] UTF-8 is a sparse encoding: a large fraction of possible byte combinations do not result in valid UTF-8 text. Binary data and text in any other encoding are likely to contain byte sequences that are invalid as UTF-8, so existence of such invalid sequences indicates the file is not UTF-8, while lack of invalid sequences is a ...
Unicode equivalence is the specification by the Unicode character encoding standard that some sequences of code points represent essentially the same character. This feature was introduced in the standard to allow compatibility with pre-existing standard character sets, which often included similar or identical characters.