33.5 Character Sets

Emacs classifies characters into various character sets, each of which has a name which is a symbol. Each character belongs to one and only one character set.

In general, there is one character set for each distinct script. For example, latin-iso8859-1 is one character set, greek-iso8859-7 is another, and ascii is another. An Emacs character set can hold at most 9025 characters; therefore, in some cases, characters that would logically be grouped together are split into several character sets. For example, one set of Chinese characters, generally known as Big 5, is divided into two Emacs character sets, chinese-big5-1 and chinese-big5-2.

ASCII characters are in character set ascii. The non-ASCII characters 128 through 159 are in character set eight-bit-control, and codes 160 through 255 are in character set eight-bit-graphic.

Function: charsetp object

Returns t if object is a symbol that names a character set, nil otherwise.

Variable: charset-list

The value is a list of all defined character set names.

Function: charset-list

This function returns the value of charset-list. It is only provided for backward compatibility.

Function: char-charset character

This function returns the name of the character set that character belongs to, or the symbol unknown if character is not a valid character.

Function: charset-plist charset

This function returns the charset property list of the character set charset. Although charset is a symbol, this is not the same as the property list of that symbol. Charset properties are used for special purposes within Emacs.

Command: list-charset-chars charset

This command displays a list of characters in the character set charset.

Ce document a été généré par Eric Reinbold le 13 Octobre 2007 en utilisant texi2html 1.78.