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charmap - character symbols to define character encodings
A character set description (charmap) defines a character set of
available characters and their encodings. All supported character sets
should have the portable character set as a proper subset.
The charmap file starts with a header, that may consist of the
is followed by the name of the codeset.
is followed by the max number of bytes for a multibyte-
character. Multibyte characters are currently not supported.
The default value is 1.
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.
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 ( \ ).
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
The following lines may have one of the two following forms to define
<symbolic-name> <encoding> <comments>
This form 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 multibyte-characters, which are currently not implemented.
The last line in a charmap-definition file must contain END CHARMAP.
A symbolic name for a character contains only characters of the
portable character set. The name itself is enclosed between angle
brackets. Characters following an <escape_char> are interpreted as
itself; for example, the sequence â€â€™<\\\>>â€â€™ represents the symbolic name
â€â€™\>â€â€™ enclosed in angle brackets.
The encoding may be in each of the following three forms:
with a decimal number
with a hexadecimal number
with an octal number.
locale(1), localedef(1), localeconv(3), setlocale(3), locale(5)
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