[XeTeX] XeLaTeX and SIunitx

Ulrike Fischer news3 at nililand.de
Sun May 13 15:05:29 CEST 2012

Am Fri, 11 May 2012 19:44:00 +0200 schrieb Bruno Le Floch:

>> As the siunitx documents state, there are simply too many combinations
>> of font packages to hope to cover all of them 'out of the box' or indeed
>> in the documentation, especially as XeLaTeX and LuaLaTeX users may be
>> loading /any/ system font. Furthermore, the package code has to work
>> with pdfTeX, so it cannot contain UTF-8 characters outside of the ASCII
>> range.

> I'm really no expert, but the siunitx package could include, e.g., µ
> as ^^^^00b5.  This  would not make pdftex choke when appearing in the
> false branch of an engine-dependent conditional.

Using ^^..-notation is certainly a good idea in styles - regardless
of the engine - as it avoids encoding confusing. But it doesn't
solve the problem here as pdftex chokes if it sees more than two ^^: 


! Text line contains an invalid character.
l.9  ^^^
? x

For pdftex you would have to code it as two 8bit-octect:  ^^c2^^b5
But this naturally will assume that pdftex is expecting utf8-input.

Ulrike Fischer 

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