Jan 20, 2020  XeTeX is Unicode-based TeX using platform fonts and font technologies (e.g. AAT on Mac OS X or OpenType features on Mac/Linux/Windows) to provide typesetting for all the world's scripts. XeTeX is a TeX-based typesetting tool for Mac OS X, making use of Unicode together with AAT and OpenType font technologies.

XeTeX (/ˈziːtɛx/ZEE-tekh^[1]or /ˈziːtɛk/; see also Pronouncing and writing 'TeX') is a TeXtypesetting engine using Unicode and supporting modern font technologies such as OpenType, Graphite and Apple Advanced Typography (AAT). It was originally written by Jonathan Kew and is distributed under the X11 free software license.^[2]

Initially developed for Mac OS X only, it is now available for all major platforms. It natively supports Unicode and the input file is assumed to be in UTF-8 encoding by default. XeTeX can use any fonts installed in the operating system without configuring TeX font metrics, and can make direct use of advanced typographic features of OpenType, AAT and Graphite technologies such as alternative glyphs and swashes, optional or historic ligatures, and variable font weights. Support for OpenType local typographic conventions (locl tag) is also present. XeTeX even allows raw OpenType feature tags to be passed to the font. Microtypography is also supported. XeTeX also supports typesetting mathematics using Unicode fonts that contain special mathematical features, such as Cambria Math or Asana Math as an alternative to the traditional mathematical typesetting based on TeX font metrics.

Mode of operation[edit]

XeTeX processes input in two stages. In the first stage XeTeX outputs an extended DVI (xdv) file, which is then converted to PDF by a driver. In the default operating mode the xdv output is piped directly to the driver without producing any user-visible intermediate files. It is possible to run just the first stage of XeTeX and save the xdv, although as of July 2008 there are no viewers capable of displaying the intermediate format.

Two backend drivers are available to generate PDF from an xdv file:

• xdv2pdf, which uses ATSUI and QuickTime frameworks, and only works on Mac OS X.
• xdvipdfmx, a modified version of dvipdfmx, which uses FreeType. This driver works on all platforms.

Starting from version 0.997, the default driver is xdvipdfmx on all platforms. As of version 0.9999, xdv2pdf is no longer supported and its development has been discontinued.^[3]

XeTeX works well with both LaTeX and ConTeXt macro packages. Its LaTeX counterpart is invoked as xelatex. It is usually used with the fontspec package, which provides a configurable interface for font selection, and allows complex font choices to be named and later reused.^[4]

XeTeX is bundled with TeX Live, MacTeX, MiKTeX and Lyx (see the History below for dates and versions).^[5]

Example[edit]

The following is an example of XeLaTeX source and rendered output. The typeface used is OFL-licensed font Linux Libertine. The text is to be processed by the command xelatex.

On Wednesday that turns Mac computers into video surveillance command centers.Once installed, the Logitech Alert system can be viewed on a variety of devices.allows users to tie six Logitech Alert security cameras into a single HD dashboard, viewed live or in playback, giving them full surveillance over households and small offices. (Users can also set up motion alerts that send text or images to your phone or email.) And once set up, the feed can be viewed privately but remotely at or via the company’s.It works with systems including the $350 and the, for either external or internal views of the premises.Until Wednesday, Logitech’s security products had been compatible.Logitech Alert Commander for Mac is free; it is compatible for users running Mac OS 10.6.8 and later. Security cameras for mac.

Arabic support[edit]

XeTeX also supports right-to-left scripts, such as Arabic. One way of rendering Arabic in XeTeX is to use the package arabxetex. In order to do so, the Arabic is placed inside the following:

The following code illustrates this:

Features[edit]

In bibliographic files (see below the BibTeX example) you can use Unicode entities and call them with their native scripting, for example cite{Ekstrøm}, instead of a transliterated ASCII form like cite{Ekstrom} which is mandatory using the pdfTeX engine.

History[edit]

XeTeX was initially released for Mac OS X only in April 2004 with built-in AAT and Unicode support. In 2005 support for OpenType layout features was first introduced. During BachoTeX 2006 a version for Linux was announced, which was ported to Microsoft Windows by Akira Kakuto a few months later, and finally included into TeX Live 2007 for all major platforms. XeTeX is also supported by LyX since version 2.0^[6] and shipped with MiKTeX since version 2.7.As of the inclusion in TeX Live, XeTeX supports most macro packages written for LaTeX, OpenType, TrueType and PostScript fonts without any specific setup procedure.Version 0.998 announced at BachoTeX 2008 supports Unicode normalization via the XeTeXinputnormalization command.Version 0.9999, released in May 2013, switched from ICU Layout Engine to HarfBuzz for OpenType layout, and Graphite2 engine for Graphite layout, as well Core Text framework instead of ATSUI on Mac OS X.

See also[edit]

• TeXworks – A multi-platform, Unicode editor designed for working with TeX files, written by the author of XeTeX.

References[edit]

1. ^Kew, Jonathan (April 3, 2007). 'Jonathan Kew'. TUG (Interview). Interviewed by Dave Walden. Retrieved November 20, 2009.
2. ^'XeTeX COPYING file'. Retrieved March 18, 2013.
3. ^Hosny, Khaled (March 12, 2013). 'Future of xdv2pdf driver on Mac'. Retrieved June 7, 2013.
4. ^Robertson, Will (August 9, 2008). 'The fontspec package'(PDF). Retrieved January 8, 2009.
5. ^'LyX wiki LyX / XeTeX'. wiki.lyx.org. Retrieved August 25, 2017.
6. ^'LyX wiki LyX / New in LyX 2.0'. wiki.lyx.org. Retrieved August 25, 2017.

Further reading[edit]

• M. Goossens (Ed.) (2008) The XeTeX Companion: TeX meets OpenType and Unicode.

External links[edit]

• The Beauty of LaTeX: illustrates XeTeX use with professional fonts.
• TeX Catalogue Entry for fontspec.
• TeX Catalogue Entry for polyglossia.
• TeX Catalogue Entry for xltxtra.
• TeX Catalogue Entry for xunicode.
• XeTeX Showcase at TUG.

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