On Sun, Aug 08, 2010 at 08:32:59AM +1000, Ross Moore wrote:
>
> Hi Peter, Sebastien,
>
> On 08/08/2010, at 7:33 AM, Peter Dyballa <peter_dyba...@web.de> wrote:
>
> >
> > Am 07.08.2010 um 22:44 schrieb Sebastian Gerecke:
> >
> >> BUT: This just has to be an utter hack and I can not believe it is the way
> >> it
> >> is supposed to be done.
> >
> > This hack is necessary because mhchem is not aware of font features, it's a
> > simple LaTeX package that maltreats simple TeX fonts in the usual ways.
> >
> >> I'm putting the scientific inferior numbers in the upper position, and the
> >> scientific superiors in the lower position. Does that make sense to anyone?
>
>
> The usual LaTeX way to do this would be to use the \sideset command from
> AMSMath, that is with \usepackage{amsmath}.
>
> But this would be placing the usual ASCII numerals, and not using the Unicode
> inferior and superior numerals. Those characters are very new to the TeX
> world. A Google search brings up only a few mentions of them on Microsoft
> pages. Thus you are not likely to find a good solution having easy syntax,
> until someone writes a macro specially for it, for use with XeTeX and other
> Unicode-aware TeX processing.
>
Actually, the OpenType features he is using, map ASCII numbers to
special glyphs designed for subscript/superscript, but unlike TeX's
optical sizes, those glyphs are scaled and raised/lowered to give the
desired size and position, and thus can't be used with normal TeX
super/subscript mechanisms. May be Will Robertson can extend his new
realscripts package to handle such situations as well, if it does not
already since I didn't test it.
Regards,
Khaled
--
Khaled Hosny
Arabic localiser and member of Arabeyes.org team
Free font developer
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