What is a UTF-8 multibyte character?

What is a UTF-8 multibyte character?

UTF-8 is a multibyte encoding able to encode the whole Unicode charset. An encoded character takes between 1 and 4 bytes. UTF-8 encoding supports longer byte sequences, up to 6 bytes, but the biggest code point of Unicode 6.0 (U+10FFFF) only takes 4 bytes.

What is surrogate character?

Surrogate characters are typically referred to as surrogate pairs. They are the combination of two characters, containing a single code point. To make the detection of surrogate pairs easy, the Unicode standard has reserved the range from U+D800 to U+DFFF for the use of UTF-16.

What is multibyte characters example?

An example of a single-byte code set is the ISO 8859 family of code sets. Examples of multibyte character sets are the IBM-eucJP and the IBM-943 code sets. The single-byte code sets have at most 256 characters and the multibyte code sets have more than 256 (without any theoretical limit).

What is UTF-8?

v. t. e. UTF-8 is a variable-width character encoding used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode (or Universal Coded Character Set) Transformation Format – 8-bit. UTF-8 is capable of encoding all 1,112,064 valid character code points in Unicode using one to four one- byte (8-bit) code units.

How many ASCII characters are there in UTF-8?

Here are the original ASCII characters from 0-127. These are the same in UTF-8. ASCII Characters 128-255 must be represented as multi-byte strings in UTF-8 UTF-8 2-byte Characters: byte 1 = \-\ß, byte 2 = \-\ There are 2048 possible 2-byte characters, but not all of them are valid and not all of the valid characters are used.

How to represent 128-255 characters in UTF-8?

ASCII Characters 128-255 must be represented as multi-byte strings in UTF-8 UTF-8 2-byte Characters: byte 1 = \-\ß, byte 2 = \-\

Why UTF-8 is the default character encoding in XML?

The World Wide Web Consortium recommends UTF-8 as the default encoding in XML and HTML (and not just using UTF-8, also stating it in metadata), “even when all characters are in the ASCII range.. Using non-UTF-8 encodings can have unexpected results”. Many other standards only support UTF-8, e.g. open JSON exchange requires it.