Hi Pol,

You can use the following:

%% begin show-math.tex
\doifmode{mkiv}{\usemodule[s][mat-11]}
\starttext
\doifmodeelse{mkiv}{\showmathfontcharacters}{\showmathcharacters}
\stoptext
%% end show-math.tex

However in mkiv the presentation of math fonts is not the same as in mkii.
I don't know how to get the mkii presentation of the math fonts in mkiv…

Best regards: OK

On 14 sept. 2012, at 16:45, pol stra <ryzz@hotmail.fr> wrote:

> Hello,
> 
> from the wiki (http://wiki.contextgarden.net/Math/basic#List_of_All_Math_macros) I tryed the following snippet:
> \usemodule[fnt-25]
> \showmathfontcharacters
> 
> But context complains that there is no fnt-25 module, so let’s grep showmathfontcharacters in conteXt directory.
> I found that it is defined into the mat-10 module. So new snippet:
> \usemodule[mat-10]
> \showmathfontcharacters
> 
> End new error:
> 
> ConTeXt  ver: 2012.09.11 20:36 MKIV  fmt: 2012.9.12  int: english/english
> 
> system          > cont-new.mkiv loaded
> (/opt/context-minimals/texmf-context/tex/context/base/cont-new.mkiv
> system          > beware: some patches loaded from cont-new.mkiv
> )
> fonts           > latin modern fonts are not preloaded
> languages       > language en is active
> (mathsymbols.tex
> resolvers       > modules > loaded: 'mat-10'
> (/opt/context-minimals/texmf-context/tex/context/base/s-mat-10.mkiv))
> fonts           > defining > font with asked name 'unknown' is not found using lookup 'file'
> fonts           > defining > unknown font unknown, loading aborted
> fonts           > defining > unable to define unknown as [thedefinedfont--0]
> ! LuaTeX error <main ctx instance>:22: attempt to index local 'resources' (a nil value)
> stack traceback:
>         <main ctx instance>:22: in function 'showmathfont'
>         <main ctx instance>:1: in main chunk.
> 
> system          > tex > error on line 5 in file /opt/context-minimals/texmf-context/tex/context/base/cont-yes.mkiv: LuaTeX error  ...
> 
>  1     %D \module
>  2     %D   [       file=cont-yes,
>  3     %D        version=2012.06.01,
>  4     %D          title=\CONTEXT\ Miscellaneous Macros,
>  5 >>  %D       subtitle=Startup Stub,
>  6     %D         author=Hans Hagen,
>  7     %D           date=\currentdate,
>  8     %D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
>  9     %C
> 10     %C This module is part of the \CONTEXT\ macro||package and is
> 11     %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
> 12     %C details.
> 13     
> 14     % At some point I will reconsider the \starttext .. \stoptext
> 15     % wraping as we can assume proper styling. It's a left-over from
> 
> <argument> ...cument.showmathfont(font.current())}
>                                                   
> \firstoftwoarguments #1#2->#1
>                              
> \doshowmathfontcharacters ...wmathfontcharacters }
>                                                   \endgroup 
> <to be read again> 
>                    \finishjob 
> l.5 \finishjob
>               
> }   context.finishjob()
>                                                   
> ...
> l.86 \stopluacode
> 
> 
> I do not realy care about this list, I was just currious and it did not work so I point it out.
> ___________________________________________________________________________________
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> 
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