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mbconv - Character encoding scheme converter


mbconv [options] <file> ...


This is an application of a library to handle multiple octets character encoding:


mainly written for debugging of the library.

It reads octet by octet from files given on command line (or standard input if no file is
specified), converts character encoding scheme (CES) as specified by command line options
(described below), and output to standard output (or a file specified by -t option or -a

-?, -h, --help
display summary of options and exits.

-a file, --append-to=file
output is appended to file.

-c converters, --convert-to=converters
specifies character encoding conversion. converters must be comma separated list of
words described in "Conversion specifiers".

-f flags, --flag=flags
specifies flags to change behavior of conversion. flags must be comma separated list
of words describe in "Flag specifiers".

-i, --input
succeeding options apply to input stream.

-m string, --mime-charset=string
mime encoding conforming to RFC2047 is performed. <string> is used as charset name.

-n, --line-number
line number (>= 1) is inserted to beginning of each line.

-o, --output
succeeding options apply to output stream.

-t file, --to=file
output to file (truncated).

-w, --width
output width of each line.

-cs <string>, --charset=string
specifies charset name. Some language specifications are also accepted as well as
MIME charset names, which are used to restrict candidates of encoding scheme of input
stream. Acceptable languages are listed in "Acceptable languages".

specifies output format

output charset name of each input stream to stderr, in the form

file name":" charset name

if two or more files are specifed on the command line, or

charset name


--regex=regular expression
specifies regeular expression to filter output. Character encoding of regular
expression can be specified by putting string of the form

"*"charset name"*"

at the beginning of the regular expression, otherwise UTF-8. Character encoding of
the expression is converted to that of output stream before matching.

Conversion specifiers
Conversion is applied just before each character is output to stream. Conversion setup is
automatically performed based on CES. So in most cases, yo need not to specify converters

domestic ASCII converted to US-ASCII,

ces converted appropriately according to the CES bound to input/output stream,

converted to Unicode,

f2h, full-to-half
Fullwidth compatibility characters are converted to corresponding halfwidth ones,

h2f, half-to-full
Halfwidth compatibility characters are converted to corresponding fullwidth ones,

Codepoints in JIS C 6226 or in JIS X 0208 which are bound to no character are
converted into JIS X 0213 plane 1,

All codepoints in JIS C 6226 or in JIS X 0208 are converted into JIS X 0213 plane 1,

Unicode characters of code point between 0x80 and 0x9F (both inclusive) are converted
to other Unicode characters as if they are characters of those code point in Microsoft
Windows Codepage 1252.

ucs-to-jis0208-extra, jis0208-to-ucs-extra
Converters between some JIS X 0208 and Unicode characters having similar glyphs (by
the courtesy of Ambrose Li <[email protected]>).

Flag specifiers
use-0x28-for-94x94inG0, 28
use "1/11 2/4 2/8 F" instead of "1/11 2/4 F" to designate charsets with final octet
4/0, 4/1, or 4/2 to G0,

ac, ascii-at-control
escape sequence "1/11 2/8 4/2" is output before every control character,

nossl, ignore-7bit-single-shift
escape sequence for 7 bit single shift is ignored,

dnc, discard-notprefered-char
discard characters which CES bound to output stream can not decode.

Acceptable languages
The following words may be given instead of MIME charset name for input stream. In that
case, encoding scheme is automatically detected (hopefully) among succeeding ones.

c, cn, china, chinese
x-gb-18030-2000, cn-big5, utf-8, or x-euc-tw.

j, ja, jp, japan, japanese
euc-jp, shift_jis, or utf-8.

k, ko, kr, korea, korean
euc-kr, x-johab, utf-8, or x-unified-hangul.

cjk iso-8859-1, x-gb-18030-2000, cn-big5, x-euc-tw, euc-jp, shift_jis, euc-kr, x-johab,
x-unified-hangul, or utf-8.

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