At least me have seen your post and tried some solutions, but nothing
useful....


On Thu, Nov 22, 2012 at 3:45 PM, Romain Diss <romain.diss@yahoo.fr> wrote:

> Hi all,
>
> Le mardi 20 novembre 2012, Romain Diss a écrit :
> > Le lundi 19 novembre 2012, Romain Diss a écrit :
> > > I got some problems to express powers of ten in the \unit command. See
> > > the strange behaviour with these two minimal examples.
> > >
> > > \starttext
> > > \unit{10^2 meter}\\
> > > \unit{10^{-12} second}
> > > \stoptext
> > > Is this a bug or are these expressions not supported?
> >
> > I'm not an expert neither in TeX nor Lua, but I quickly glance at the
> > source code (phys-dim.*) and here is what I understand:
> > — the brackets { } are not recognized (a comment in the lua code
> mentioned
> > it), so \unit{10^{-12} second} should be \unit{10^-12 second};
> > — the hat sign '^' is recognized as 'e' so it means "… times ten to the
> > power…" instead of "to the power…" as one should expect.
> >
> > So I come back to my problem. I want to write 10⁻¹² s (ten to the
> negative
> > twelfth power second). Actually, I'm typing \math{10^{-12} \unit{second}}
> > but I'd prefer to type \unit{10^-12 second} (for coherence). Is it
> > possible to modify phys-dim.lua in that way or is this to much work (I
> > have no idea if this is a matter of changing one line or a hundred lines
> > in phys-dim.lua. Maybe also this is a too specific request, I don't know…
>
> Nobody seems very enthusiastic concerning this thread so I tried to go
> further
> in the comprehension of the phys-dim.lua code. I now have found an
> approximate
> solution to my problem :
> \unit{$10^{-12}$ second}
> give the right result. It is not very satisfactory because I'm now used to
> use
> \m{} instead of $ $. In the phys-dim.lua code, the line 64 shows that \m{}
> can
> be used inside \unit{} but this doesn't work for:
> \unit{\m{10^{-12}} second}
> because the pattern doesn't handle nested curly braces.
>
> Is there any Lua expert to find a pattern to handle exponents?
>
> Thank you.
>
> --
> Romain Diss
> <romain.diss@yahoo.fr>
>
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-- 
luigi