charmap(5)

NAME
charmap - character symbols to define character encodings

DESCRIPTION
A character set description (charmap) defines a characterset of available characters and their encodings. All supported character sets should have the portable character set as a proper subset. The portable character set is defined in the file /usr/lib/nls/charmap/POSIX for reference purposes.

SYNTAX
The charmap file starts with a header, that may consist of the following keywords:

<codeset>
    is followed by the name of the codeset.

<mb_cur_max>
    is followed by the max number of bytes for a multibyte-character. Multibyte characters are currently not supported. The default value is 1.

<mb_cur_min>
    is followed by the min number of bytes for a character. This value must be less or equal than mb_cur_max. If not specified, it defaults to mb_cur_max.

<escape_char>
    is followed by a character that should be used as the escape-character for the rest of the file to mark characters that should be interpreted in a special way. It defaults to the backslash ( \\ ).

<comment_char>
    is followed by a character that will be used as the comment-character for the rest of the file. It defaults to the number sign ( # ).

The charmap-definition itself starts with the keyword CHARMAP in column 1. The following lines may have one of the two following forms to define the character-encodings:

<symbolic-name> <encoding> <comments>
    This for defines exactly one character and its encoding.

<symbolic-name>...<symbolic-name> <encoding> <comments>
    This form defines a couple of characters. This is only useful for mutlibyte-characters, which are currently not implemented.

The last line in a charmap-definition file must contain END CHARMAP.

SYMBOLIC NAMES
A symbolic name for a character contains only characters of the portable character set. The name itself isenclosed between angle brackets. Characters following the <escape_char> are interpreted as itself; for example, the sequence '<\\\\\\>>' represents the symbolic name '\\>' enclosed in angle brackets.

CHARACTER ENCODING
The encoding may be in each of the following three forms:

<escape_char>d<number>
    with a decimal number

<escape_char>x<number>
    with a hexadecimal number

<escape_char><number>
    with an octal number.

FILES
/usr/lib/nls/charmap/*

AUTHOR
Jochen Hein (jochen.hein@delphi.central.de)

CONFORMING TO
POSIX.2

SEE ALSO
setlocale(3), localeconv(3), locale(1), locale(5), localedef(1),