[lltx] patch for lualatex-math.lua

[Wolfgang Jeltsch]

I’ve meanwhile found out that the mirror I’m using seems to be flawed,
although it was chosen by the TeX Live installation script. It still has
lualatex-math from 13 January 2013!

Best wishes,
Wolfgang

Am Freitag, den 16.08.2013, 14:18 +0300 schrieb Wolfgang Jeltsch:
> Hi,
> 
> I see that the patched package has been uploaded to CTAN. Surprisingly,
> it hasn’t gone into TeX Live. Does anyone know why?
> 
> Best wishes,
> Wolfgang
> 
> Am Samstag, den 03.08.2013, 23:28 +0200 schrieb Philipp Stephani:
> > Thanks for the patch; I've already merged Philipp Gesang's equivalent
> > patch and will do a new release ASAP.
> > 
> > 
> > 2013/8/3 Wolfgang Jeltsch <wolfgang at cs.ioc.ee>
> >         Hi Philipp,
> >         
> >         I don’t know if you have followed the recent discussion on
> >         lualatex-dev
> >         about an issue with the lualatex-math package.
> >         
> >         The code in lualatex-math.lua relies on unpack being a global
> >         variable,
> >         which was the case in Lua 5.1, but is not the case anymore in
> >         Lua 5.2.
> >         As a result, I get the following error when importing amsmath
> >         and
> >         lualatex-math in the same document:
> >         
> >             ! LuaTeX error
> >         
> >           .../texmf-dist/tex/lualatex/lualatex-math/lualatex-math.lua:46:
> >             attempt to call upvalue 'unpack' (a nil value)
> >             stack traceback:
> >         
> >           .../texmf-dist/tex/lualatex/lualatex-math/lualatex-math.lua:46:
> >                     in function 'print_class_fam_slot'
> >                     [string "\directlua "]:1: in main chunk.
> >             \__lltxmath_set_mathchar:NN ...\int_eval:n {`#2})}
> >         
> >         \scan_stop:
> >         
> >         Other Lua files (lualibs-basic-merged.lua, lualibs-lua.lua,
> >         and
> >         luaotfload-merged.lua) use the following code to work around
> >         this
> >         incompatibility between Lua 5.1 and Lua 5.2:
> >         
> >             if not table.unpack then
> >               table.unpack=_G.unpack
> >             elseif not unpack then
> >               _G.unpack=table.unpack
> >             end
> >         
> >         By adding this code to lualatex-math.lua at an appropriate
> >         place, I was
> >         able to fix the issue with lualatex-math and amsmath.
> >         
> >         I’ve attached a patch. Could this patch or some other fix for
> >         the
> >         problem please be incorporated into lualatex-math? Thank you.
> >         
> >         Best wishes,
> >         Wolfgang
> > 
> > 
> 
>