gardener, Interface administrators, Administrators
3,893
edits
Changes
Jump to navigation
Jump to search
m
< [[Fonts]] >
Encodings and Regimes - Old Content (view source)
Revision as of 17:18, 8 June 2020
, 17:18, 8 June 2020no edit summary
==Introduction==
If you write ConTeXt source documents and use more than 7-bit ASCII, you must decide on the encoding of your file. That’s a matter of your text editor.
The best choice is normally UTF-8, but if you insist to use an outdated editor that can’t handle Unicode properly or if you’re forced to use legacy code, you have to choose the proper 8-bit encoding, see below.
=== Testing for UTF-8-aware TeX ===
To test for [[LuaTex]], one may test if <code>\directlua</code> is defined.
The next weird macro definition should work for testing XeTeX/LuaTex, because only XeTeX and LuaTex accept 5- and 6-byte caret notation (hex 22 == double quote):
<texcode>
\def\"{0}\expandafter\def\csname^^^^^00022\endcsname{1}
\ifnum\"=0 \message{tex82}\else\message{newstuff}\fi
</texcode>
But that is not quite the same as testing for native UTF-8. Better is a trick like this:
<texcode>
\def\test#1#2!{\def\secondarg{#2}}
\test χ!\relax % That's Chi, a 2-byte utf-8 sequence
\ifx\secondarg\empty \message{newstuff}\else \message{tex82}\fi
</texcode>
ConTeXt offers <code>\beginNEWTEX ... \endNEWTEX</code> to process code conditional on using LuaTeX or XeTeX.
===Available Regimes===
<table style="border:1px solid #DDDDDD">
<tr style="background-color:#DDDDDD"><th>ConTeXt name(s)</th><th>Official name(s)</th><th>Remarks</th></tr>
====How do I know which glyph name to use?====
* Under mkii, use <{{cmd>|showcharacters</cmd>}}* Consult the [http://partners.adobe.com/public/developer/en/opentype/aglfn13.txt Adobe glyph list]* browse the ConTeXt [[source:enco-acc.tex|sourceenco-acc.tex]], {{src|enco-acc.mkii}}, or {{src|char-def.lua}}. (Warning: The lua file is 3.6 MB large and contains nearly 180,000 lines.)
<context mode=mkii source="yes">
\showcharacters
</context>
* [http://www.jw-stumpel.nl/stestu.html Multilingual text on Linux] : A good guide on how to configure and use UTF-8 support on linux.
[[Category:Fonts]][[Category:InternationalOld Content]]
