[lltx] amsmath + breqn + unicode-math breaks

[Arno Trautmann]

Hi all,

as the subject tells, I'd like to use the breqn package together with 
amsmath and unicode-math. But it seems that only two out of these three 
work together mutually. Depending on the order of loading, I can produce 
some different error messages, but as amsmath always has to be the first 
one, here are the two relevant messages, belonging to the minimal 
example below. (file list at the end of the mail)

——————————————————————————————————————————
./test.tex:7: Undefined control sequence.
<recently read> \

l.7 \begin{dmath}

?
——————————————————————————————————————————
Runaway argument?
\reset at strutbox@ \lltxmath_set_mathchar:NN \std at minus 
\-\lltxmath_set_mathchar:
NN \ETC.
/home/texlive2011/texmf-dist/tex/latex/mh/breqn.sty:50: File ended while 
scanni
ng use of \next.
<inserted text>
                 \par
l.50 }

?
——————————————————————————————————————————

\documentclass{minimal}
\usepackage{amsmath}
\usepackage{breqn}
\usepackage{unicode-math}\setmathfont{XITS-math}

\begin{document}
\begin{dmath}
a = b
\end{dmath}
\end{document}
——————————————————————————————————————————

Are there any chances that this could anyhow work together? It would be 
great to have all the functionality. Unfortunately, the error messages 
seem too random for me to guess where the problem really is …

cheers
Arno

  *File List*
  minimal.cls    2001/05/25 Standard LaTeX minimal class
  amsmath.sty    2000/07/18 v2.13 AMS math features
  amstext.sty    2000/06/29 v2.01
   amsgen.sty    1999/11/30 v2.0
   amsbsy.sty    1999/11/29 v1.2d
   amsopn.sty    1999/12/14 v2.01 operator names
    breqn.sty    2009/08/07 v0.98a Breaking equations
    expl3.sty    2011/08/17 v2607 L3 Experimental code bundle wrapper
  l3names.sty    9999/99/99 v999 L3 Experimental namespace for primitives
l3bootstrap.sty    9999/99/99 v999 L3 Experimental bootstrap code
   luatex.sty    2010/03/09 v0.4 LuaTeX basic definition package (HO)
infwarerr.sty    2010/04/08 v1.3 Providing info/warning/message (HO)
ifluatex.sty    2010/03/01 v1.3 Provides the ifluatex switch (HO)
     etex.sty    1998/03/26 v2.0 eTeX basic definition package (PEB)
luatex-loader.sty    2010/03/09 v0.4 Lua module loader (HO)
pdftexcmds.sty    2011/04/22 v0.16 Utilities of pdfTeX for LuaTeX (HO)
  ltxcmds.sty    2011/04/18 v1.20 LaTeX kernel commands for general use (HO)
    ifpdf.sty    2011/01/30 v2.3 Provides the ifpdf switch (HO)
     calc.sty    2007/08/22 v4.3 Infix arithmetic (KKT,FJ)
l3basics.sty    9999/99/99 v999 L3 Experimental basic definitions
  l3expan.sty    9999/99/99 v999 L3 Experimental argument expansion
     l3tl.sty    9999/99/99 v999 L3 Experimental token lists
    l3seq.sty    9999/99/99 v999 L3 Experimental sequences and stacks
    l3int.sty    9999/99/99 v999 L3 Experimental integers
  l3quark.sty    9999/99/99 v999 L3 Experimental quarks
    l3prg.sty    9999/99/99 v999 L3 Experimental control structures
  l3clist.sty    9999/99/99 v999 L3 Experimental comma separated lists
  l3token.sty    9999/99/99 v999 L3 Experimental token manipulation
   l3prop.sty    9999/99/99 v999 L3 Experimental property lists
    l3msg.sty    9999/99/99 v999 L3 Experimental messages
     l3io.sty    9999/99/99 v999 L3 Experimental input-output operations
   l3file.sty    9999/99/99 v999 L3 Experimental file operations
   l3skip.sty    9999/99/99 v999 L3 Experimental dimensions and skips
    l3box.sty    9999/99/99 v999 L3 Experimental boxes
l3keyval.sty    9999/99/99 v999 L3 Experimental key-value parsing
   l3keys.sty    9999/99/99 v999 L3 Experimental key-value interfaces
     l3fp.sty    9999/99/99 v999 L3 Experimental floating-point operations
l3luatex.sty    9999/99/99 v999 L3 Experimental LuaTeX-specific functions
l3coffins.sty    9999/99/99 v999 L3 Experimental coffin code layer
graphicx.sty    1999/02/16 v1.0f Enhanced LaTeX Graphics (DPC,SPQR)
   keyval.sty    1999/03/16 v1.13 key=value parser (DPC)
graphics.sty    2009/02/05 v1.0o Standard LaTeX Graphics (DPC,SPQR)
     trig.sty    1999/03/16 v1.09 sin cos tan (DPC)
graphics.cfg    2010/04/23 v1.9 graphics configuration of TeX Live
   pdftex.def    2011/05/27 v0.06d Graphics/color for pdfTeX
    color.sty    2005/11/14 v1.0j Standard LaTeX Color (DPC)
    color.cfg    2007/01/18 v1.5 color configuration of teTeX/TeXLive
   l3toks.sty    9999/99/99 v999 L3 Experimental token registers
flexisym.sty    2010/09/17 v0.97b Make math characters macros
   cmbase.sym    2007/12/19 v0.92
mathstyle.sty    2010/11/17 v0.89
unicode-math.sty    2011/07/31 v0.5e Unicode maths in XeLaTeX and LuaLaTeX
  ifxetex.sty    2010/09/12 v0.6 Provides ifxetex conditional
   xparse.sty    2011/08/17 v2607 L3 Experimental document command parser
l3keys2e.sty    2011/08/17 v2607 LaTeX2e option processing using LaTeX3 keys
fontspec.sty    2011/02/26 v2.1f Advanced font selection for 
XeLaTeX/LuaLaTeX
luaotfload.sty    2011/04/21 v1.25 OpenType layout system
luatexbase.sty    2010/10/06 v0.3 Module utilities for LuaTeX
luatexbase-compat.sty    2010/10/10 v0.3 Compatibility tools for LuaTeX
luatexbase-loader.sty    2010/10/10 v0.3 Lua module loader for LuaTeX
luatexbase-regs.sty    2010/10/10 v0.3 Registers allocation for LuaTeX
luatexbase-attr.sty    2011/05/21 v0.31 Attributes allocation for LuaTeX
luatexbase-cctb.sty    2010/10/10 v0.3 Catcodetable allocation for LuaTeX
luatexbase-mcb.sty    2010/10/10 v0.3 Callback management for LuaTeX
luatexbase-modutils.sty    2010/10/10 v0.3 Module utilities for LuaTeX
  xkeyval.sty    2008/08/13 v2.6a package option processing (HA)
  xkeyval.tex    2008/08/13 v2.6a key=value parser (HA)
fontspec-patches.sty    2011/02/26 v2.1f Advanced font selection for 
XeLaTeX/Lu
aLaTeX
fixltx2e.sty    2006/09/13 v1.1m fixes to LaTeX
  fontenc.sty
   eu2enc.def    2010/05/27 v0.1h Experimental Unicode font encodings
   eu2lmr.fd    2009/10/30 v1.6 Font defs for Latin Modern
xunicode.sty    2010/11/06 v0.96 provides access to latin accents and 
many othe
r characters in Unicode lower plane
fontspec.cfg
catchfile.sty    2011/03/01 v1.6 Catches the contents of a file (HO)
etexcmds.sty    2011/02/16 v1.5 Prefix for e-TeX command names (HO)
trimspaces.sty    2009/09/17 v1.1 Trim spaces around a token list
   fix-cm.sty    2006/09/13 v1.1m fixes to LaTeX
   ts1enc.def    2001/06/05 v3.0e (jk/car/fm) Standard LaTeX file
filehook.sty    2011/03/09 v0.5a Hooks for input files
lualatex-math.sty    2011/05/05 v0.1 Patches for mathematics typesetting 
with L
uaLaTeX
etoolbox.sty    2011/01/03 v2.1 e-TeX tools for LaTeX
unicode-math-table.tex
supp-pdf.mkii
epstopdf-base.sty    2010/02/09 v2.5 Base part for package epstopdf
   grfext.sty    2010/08/19 v1.1 Managing graphics extensions (HO)
kvdefinekeys.sty    2011/04/07 v1.3 Defining keys (HO)
kvoptions.sty    2010/12/23 v3.10 Keyval support for LaTeX options (HO)
kvsetkeys.sty    2011/04/07 v1.13 Key value parser (HO)
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX 
Live
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