Encode::X11(3) User Contributed Perl Documentation Encode::X11(3)
NAME
Encode::X11 -- character encodings for X11
SYNOPSIS
use Encode;
use Encode::X11;
my $chars = Encode::decode ('x11-compound-text', $bytes);
DESCRIPTION
This module encodes and decodes X11 ICCCM "compound text" strings.
x11-compound-text
Compound text is found in window properties of type "COMPOUND_TEXT".
It's not usual to use it outside that context. Compound text consists
of ISO-2022 style escape sequences switching among various basic
charsets, including the ISO-8859 series, JIS, KSC, and GB.
The plain name "x11-compound-text" tries to encode in a sensible and
compatible way. Perhaps in the future there'll be some options or
variations for which charsets to use. For now encoding prefers the
original ICCCM charsets latin-N, JIS, KSC and GB for the benefit of
older X clients, then the newer utf-8 encoding when necessary.
The decode is meant to recognise anything, but may be a bit limited
yet. Perhaps it could be just a full ISO-2022 decode, if/when that
might exist, but for now it's done explicitly and might potentially
cope with X11 specifics.
Decoding cns11643 segments requires the "Encode::HanExtra" module.
Such segments are not normally generated by the Xlib conversions (as of
X.org libX11 1.4.0). Have HanExtra available if you think you might
encounter them.
Emacs has some "private encoding" sequences for big5. They're not
supported currently.
When working with compound text you might in fact not want to convert
it to Perl wide chars. If drawing with the core X requests then split
it into segments of the various charsets and find a font for each
encoding. Some oopery could no doubt represent such a breakdown and
have things like concatenate or compare. That would work almost
directly with the bytes without converting.
SEE ALSO
Encode, Encode::HanExtra
"Compound Text Encoding" specification,
/usr/share/doc/xorg-docs/ctext/ctext.txt.gz,
<http://www.x.org/docs/CTEXT/ctext.pdf>
HOME PAGE
<http://user42.tuxfamily.org/x11-protocol-other/index.html>
LICENSE
Copyright 2011, 2012, 2013, 2014, 2017 Kevin Ryde
X11-Protocol-Other is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 3, or (at
your option) any later version.
X11-Protocol-Other is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with X11-Protocol-Other. If not, see <http://www.gnu.org/licenses/>.
perl v5.28.2 2017-04-12 Encode::X11(3)
x11-protocol-other 31 - Generated Tue Aug 6 15:23:37 CDT 2019