On 19-6-2011 2:25, Kip Warner wrote:
Hey list,

I am running ConTeXt version 2011.06.17 16:50 pulled from Adam's PPA.

 From the Chemistry wiki article here,
http://wiki.contextgarden.net/Chemistry

, I am attempted to compile the water reaction example here:
\usemodule[chemic]
\startformula
  \chemical{2H_2,+,O_2,->,2H_2O}
\stopformula

The image following it on the wiki looks as one would expect, but mine
does not. I compiled the same code, but bracketed with \startstoptext
and my generated PDF contains literally the following:

2H 2,+,O 2,–>,2H 2O

Something's not right. Any ideas? I have tried it both with and without
the texlive-math-extra package installed.

chemical support is not includes so best not load the chem module

\chemical{2H_2,+,O_2,->,2H_2O}

\startformula
    \chemical{2H_2}{}{}
\stopformula

\startformula
    \inlinechemical{2H_2,+,O_2,->,2H_2O}
\stopformula

\startchemicalformula
    \chemical{S}
    \chemical{+}
    \chemical{O_2}
    \chemical{GIVES}{violent}
    \chemical{\+{4}{S}\-{2}{O_2}}
\stopchemicalformula

the last case is bugged (i'll look into it, probably some interference with recent math)

Hans

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