Am Sonntag 08 August 2010, 00:32:59 schrieb Ross Moore: > 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. > > If I've understood this correctly, you want the positioning of \sideset > with the characters being the Unicode superiors and inferiors, which are > full-sized glyphs. Furthermore, the input syntax should be intuitive, > allowing use of either ASCII numerals or the Unicode points directly, for > maximum flexibility.
That is exactly what I want, yes. The Libertine webpage promotes the sub/superscipt feature and explicitly gives the example of chemical formulars. That is why I thougt it would be easy to use that feature. > > Should such support be in the unicode-math package? > Probably not, as super-/subscripts in math usually have the usual numerical > meaning, so it would be wrong to use separate characters, just for a > purely visual effect. > > Is a chemist going to learn about Unicode and XeTeX just to typeset isotope > names correctly? We could be so lucky! > > However maybe if someone on this list develops such a macro, it could go > into xltxtra.sty . The macro Mike has written works really well for me. Perhaps that could be included somewhere? > > > Well, otherwise it would look much worse... > > Indeed. > > > -- > > Mit friedvollen Grüßen > > > > Pete > > Hope this helps, > > Ross > > > -------------------------------------------------- > Subscriptions, Archive, and List information, etc.: > http://tug.org/mailman/listinfo/xetex -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex