Manual Reference Pages - VIS (1)
- display non-printable characters in a visual format
Multibyte Character Support
is a filter for converting non-printable characters
into a visual representation.
It differs from
the form is unique and invertible.
By default, all non-graphic
characters except space, tab, and newline are encoded.
A detailed description of the
various visual formats is given in
The options are as follows:
Turns off prepending of backslash before up-arrow control sequences
and meta characters, and disables the doubling of backslashes.
produces output which is neither invertible or precise, but does
represent a minimum of change to the input.
It is similar to
Request a format which displays a small subset of the
non-printable characters using C-style backslash sequences.
Also encode characters in
to fold output lines to foldwidth columns (default 80), like
that a hidden newline sequence is used, (which is removed
when inverting the file back to its original form with
If the last character in the encoded file does not end in a newline,
a hidden newline sequence is appended to the output.
the output usable with various editors and other utilities which
typically dont work with partial lines.
Encode using the URI encoding from RFC 1808.
Mark newlines with the visible sequence
followed by the newline.
Encode using the MIME Quoted-Printable encoding from RFC 2045.
Turns off any encoding, except for the fact that backslashes are
still doubled and hidden newline sequences inserted if
When combined with the
an invertible version of the
That is, the output can be unfolded by running the output through
Request a format which displays non-printable characters as
an octal number, \ddd.
Only characters considered unsafe to send to a terminal are encoded.
This flag allows backspace, bell, and carriage return in addition
to the default space, tab and newline.
Tabs are also encoded.
White space (space-tab-newline) is also encoded.
MULTIBYTE CHARACTER SUPPORT
supports multibyte character input.
The encoding conversion is influenced by the setting of the
environment variable which defines the set of characters that can be
copied without encoding.
When 8-bit data is present in the input,
must be set to the correct locale or to the C locale.
If the locales of the data and the conversion are mismatched, multibyte
character recognition may fail and encoding will be performed byte-by-byte
Specify the locale of the input data.
Set to C if the input data locale is unknown.
command appears in
BSD 4.4 .
Myltibyte character support was added in
.Fx 9.2 .
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.