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.\" Escape single quotes in literal strings from groff's Unicode transform.
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.TH LUIT 1 __vendorversion__
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luit \- Locale and ISO\ 2022 support for Unicode terminals
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is a filter that can be run between an arbitrary application and a
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UTF-8 terminal emulator. It will convert application output from the
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locale's encoding into UTF-8, and convert terminal input from UTF-8
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into the locale's encoding.
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An application may also request switching to a different output
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encoding using ISO\ 2022 and ISO\ 6429 escape sequences. Use of this
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feature is discouraged: multilingual applications should be modified
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to directly generate UTF-8 instead.
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is usually invoked transparently by the terminal emulator. For
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information about running
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from the command line, see EXAMPLES below.
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Display some summary help and quit.
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List the supported charsets and encodings, then quit.
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Print luit's version and quit.
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Function as a simple converter from standard input to standard output.
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In startup, establish a handshake between parent and child processes.
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This is needed for some systems, e.g., FreeBSD.
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Exit as soon as the child dies. This may cause
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to lose data at the end of the child's output.
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Set the child's name (as passed in argv[0]).
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.BI \-encoding " encoding"
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rather than the current locale's encoding.
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Disable interpretation of single shifts in application output.
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Disable interpretation of locking shifts in application output.
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Disable interpretation of character set selection sequences in
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Disable interpretation of all sequences and pass all sequences in
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application output to the terminal unchanged. This may lead to
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Generate seven-bit characters for keyboard input.
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Disable generation of single-shifts for keyboard input.
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Use GL codes after a single shift for keyboard input. By default, GR
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codes are generated after a single shift when generating eight-bit
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Generate locking shifts (SO/SI) for keyboard input.
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Set the initial assignment of GL. The argument should be one of
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The default depends on the locale, but is usually
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Set the initial assignment of GR. The default depends on the locale,
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except for EUC locales, where it is
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Set the charset initially selected in G0. The default depends on
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the locale, but is usually
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Set the charset initially selected in G1. The default depends on the
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Set the charset initially selected in G2. The default depends on the
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Set the charset initially selected in G3. The default depends on the
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.BI \-ilog " filename"
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all the bytes received from the child.
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.BI \-olog " filename"
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all the bytes sent to the terminal emulator.
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.BI \-alias " filename"
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the locale alias file
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(default: __locale_alias__).
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The most typical use of
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is to adapt an instance of
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to the locale's encoding. Current versions of
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automatically when it is needed. If you are using an older release of
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or a different terminal emulator, you may invoke
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$ xterm \-u8 \-e luit
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If you are running in a UTF-8 locale but need to access a remote
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machine that doesn't support UTF-8,
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can adapt the remote output to your terminal:
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$ LC_ALL=fr_FR luit ssh legacy-machine
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is also useful with applications that hard-wire an encoding that is
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different from the one normally used on the system or want to use
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legacy escape sequences for multilingual output. In particular,
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that do not speak UTF-8 well can use
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for multilingual output:
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$ luit -encoding 'ISO 8859-1' emacs -nw
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M-x set-terminal-coding-system RET iso-2022-8bit-ss2 RET
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The file mapping locales to locale encodings.
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On systems with SVR4 (\*(``Unix-98\*('') ptys (Linux version 2.2 and later,
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should be run as the invoking user.
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On systems without SVR4 (\*(``Unix-98\*('') ptys (notably BSD variants),
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as an ordinary user will leave the tty world-writable; this is a
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security hole, and luit will generate a warning (but still accept to
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run). A possible solution is to make
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should drop privileges sufficiently early to make this safe. However,
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the startup code has not been exhaustively audited, and the author
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takes no responsibility for any resulting security issues.
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will refuse to run if it is installed setuid and cannot safely drop
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None of this complexity should be necessary. Stateless UTF-8
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throughout the system is the way to go.
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Charsets with a non-trivial intermediary byte are not yet supported.
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Selecting alternate sets of control characters is not supported and
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xterm(__appmansuffix__), unicode(__miscmansuffix__), utf-8(__miscmansuffix__), charsets(__miscmansuffix__).
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.I Character Code Structure and Extension Techniques (ISO\ 2022, ECMA-35).
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.I Control Functions for Coded Character Sets (ISO\ 6429, ECMA-48).
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included in this X.Org Foundation release
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was originally written by Juliusz Chroboczek <jch@freedesktop.org>
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for the XFree86 Project and includes additional contributions from
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Thomas E. Dickey required for newer releases of xterm(__appmansuffix__).
added
removed
luit/man/luit.man
