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 option).
Options
-?, -h, --help
display summary of options and exits.
-afile, --append-to=file
output is appended to file.
-cconverters, --convert-to=converters
specifies character encoding conversion.
converters must be comma separated list of
words described in ``Conversion specifiers''.
-fflags, --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.
-mstring, --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.
-tfile, --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''.
--format=string
specifies output format
--which
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
otherwise.
--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 explicitly.
ascii
domestic ASCII converted to US-ASCII,
ces
converted appropriately according to
the CES bound to input/output stream,
to-ucs
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,
jisx0213
Codepoints in JIS C 6226 or in JIS X 0208 which are bound to no
character are converted into JIS X 0213 plane 1,
jisx0213-aggressive
All codepoints in JIS C 6226 or in JIS X 0208 are converted into JIS X
0213 plane 1,
ms-latin1
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 <acli@ada.dhs.org>).
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.