NAME
vt-is-UTF8 - check whether current VT is in UTF8- or byte-mode.
SYNOPSIS
vt-is-UTF8 [-h|--help] [-V|--version] [-q|--quiet]
DESCRIPTION
vt-is-UTF8 checks whether the current VT is in UTF8 mode, by writing
(and erasing afterwards) a 3-byte-long UTF8 sequence, and looking how
much chars where displayed by the console driver.
A message telling in which mode the console is is then written to
stdout (except if the --quiet option was given).
If the --quiet option is not given, the value returned is 1 if an error
occurs, else 0.
OPTIONS
-h --help
display version number, a short help message and exit.
-V --version
display version number and exit.
-q --quiet
do not print on stdout in with mode we are, but return the state
as exit-status 0 if in UTF8-mode, 1 if in byte-mode. In case of
error, 1 is returned and a message is displayed on stderr.
BUGS
The check should be done by directly asking the kernel, which is not
possible as of kernels 2.0.x.
As of kernel 2.0.35, the byte-mode is sometimes erroneously detected as
UTF8-mode, after switching from a 512-chars font to a 256-chars font.
This is probably a console-driver bug.
SEE ALSO
unicode_start(1), unicode_stop(1).