emaxima, breqn and physical constants



Hi,

I've found a slight problem with using the breqn option and physical
constants from the physical_constants.mac package. The reason is that

\begin{maxima}[]
\maximaoutput*
\m   m_\mathrm{e}\\
\end{maxima}

Compiles fine if emaxima latex package is  used as:

\usepackage{emaxima}

but fails to compile  if 

\usepackage[breqn]{emaxima}

is used.  The problem can be worked around by putting a set of braces
under the sub-scripted part, i.e.:

\begin{maxima}[]
\maximaoutput*
\m   m_{\mathrm{e}}\\
\end{maxima}

However the physical constants in physical_constants.mac do not have
this extra set of wrapping braces.

Anybody else seeing this?

I'm using:

\ProvidesExplPackage{breqn}{2009/08/07}{0.98a}{Breaking equations}

Best,
Bojan


-- 
Bojan Nikolic               Tel:  +44 1223 746432
Astrophysics Group	    Fax:  +44 1223 354599	 
Cavendish Laboratory	    
Cambridge CB3 0HE