[XeTeX] XeLaTeX and SIunitx(in a way OT)

[Keith J. Schultz]

Hi All,

I have a question. 

In a style file would say TeX barf if it contained utf-8 characters even if
I have them in a conditional sothat the are not processed by the engine
just parsed?

regards
	Keith


Am 14.05.2012 um 01:19 schrieb Ross Moore:

> Hi Ulrike, and Bruno,
> 
> On 13/05/2012, at 11:05 PM, Ulrike Fischer wrote:
> 
>> Am Fri, 11 May 2012 19:44:00 +0200 schrieb Bruno Le Floch:
>> 
>>> 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.
> 
> If by styles, you mean in a macro definition made within 
> a separate style file, then I agree with you 100%.
> 
> But ...
> 
>> But it doesn't
>> solve the problem here as pdftex chokes if it sees more than two ^^: 
>> 
> 
>  ... this is not a good example to support this view.
> 
>> \documentclass{article}
>> \begin{document}
>> ^^^^00b5
>> \end{document}
> 
> The body of your document source should be engine independent,
> so this should look more like:
> 
> 
> \documentclass{article}
> \usepackage{ifxetex}
> 
> \ifxetex
> \newcommand{\micronChar}{^^^^00b5}
>  % handle other characters
>  ...
> \else
> \if ... 
>  % handle other possibilities
>  %  e.g.  ^^c2^^b5
>  ...
> \fi
> \fi
> 
> \begin{document}
> \micronChar
> \end{document}
> 
> 
> Better still, of course is to have the conditional
> definitions made in a separate file, so that similar things
> can all be handled together and used in multiple documents.
> 
> You want to avoid having to find and replace multiple instances
> of the special characters, when you share you work with colleagues
> or need to reuse your own work in other contexts.
> Instead you should simply need to adjust the macro expansions,
> and all that previous work will adapt automatically.
> 
>> 
>> 
>> ! Text line contains an invalid character.
>> l.9  ^^^
>>       ^00b5
>> ? 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 
> 
> Hope this helps,
> 
> 	Ross
> 
> ------------------------------------------------------------------------
> Ross Moore                                       ross.moore at mq.edu.au 
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> Macquarie University                             tel: +61 (0)2 9850 8955
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