Quoting WN <[EMAIL PROTECTED]>:
> Hi Aditya
>
> I tried your code and performed more tests. My first tests show your fix
> works. But than I added a \section{} in my test code and I am sorry
> to say that
> the math matrix alignment does not work at that point.
> However the extra math fonts I defined still do work.
Ok. I will test this to see what is happening. (I do not have an
uptodate context on this machine).
> General observation
> I thought from the examples like using the RSFS font on the wiki page
> http://wiki.contextgarden.net/rsfs that using other fonts for math
> should be easy.
> Thinking about this specific example I now understand that this
> example is flawed
> as some default math characters are also overwritten.
I am out of depths here. I do not really understand how math fonts are
handled. The wiki example was modified from a suggestion from Taco. For
rsfs, you can go to the plain tex way of doing things also.
Aditya
> PS
> Attached my modified test code along with the map file for the RSFS fonts.
> For the RSFS fonts I am using \definedfont and not using the definebodyfont.
>
>> Hi Wim,
>>
>> On Tue, 31 Jul 2007, WN wrote:
>>
>> see previous email
>
>> Phew! This was a hard to find bug. First, to illustrate the bug:
>> \definetypeface[mainface] [rm] [serif] [modern] [default] [encoding=texansi]
>> \definetypeface[mainface] [mm] [math] [modern] [modern] [encoding=texansi]
>>
>> \setupbodyfont[mainface,11pt]
>>
>> \loggingall
>>
>> \starttext
>> \startformula
>> A = \startmatrix[align={left,right}]
>> \NC 11 \NC 2 \NR
>> \NC 2 \NC -5 \NR
>> \stopmatrix
>> \stopformula
>>
>> \stoptext
>>
>> Try with and without the font declarations. With the font
>> declarations, you lost matrix alignment. The reason is that
>> \startmatrix uses \scratchcounter, which gets rewritten when using a
>> font collection other than "default". One fix it to replace
>> \scractcounter in matrix constructions by some other counter, for
>> example \!!counta.
>>
>> So, add this to your file (beware of false line breaks in email)
>>
>> \unprotect
>>
>> \def\dostartmathmatrix[#1][#2]%
>> {\begingroup
>> \edef\currentmathmatrix{#1}%
>> \doifassignmentelse{#2}{\setupmathmatrix[#1][#2]}\donothing
>> \null
>>
>> \executeifdefined{\??mx:\mathmatrixparameter\c!location}{\getvalue{\??mx:\v!lohi}}%
>> \mathmatrixleft
>> \mathmatrixbox\bgroup
>> \pushmacro\domatrixNC
>> \let\endmath\relax
>> \def\NC{\domatrixNC}%
>> \def\MC{\domatrixNC\ifmmode\else$\def\endmath{$}\fi}%
>> \global\let\domatrixNC\dodomatrixNC
>> \def\NR{\endmath\global\let\domatrixNC\dodomatrixNC\crcr}%
>> \normalbaselines
>> \mathsurround\zeropoint
>> \everycr\emptytoks
>> \tabskip\zeropoint
>> \eqaligncolumn\zerocount % could be \!!counta
>>
>> \processcommacommand[\mathmatrixparameter\c!align]{\advance\eqaligncolumn\plusone\dosetmatrixcolumn}%
>> \!!counta=\ifnum\eqaligncolumn>\!!counta \eqaligncolumn \else
>> \plusone \fi
>> \global\eqaligncolumn\plusone
>> \preparemathmatrix } % uses !!counta
>>
>> \def\buildmathmatrix % beware: etex only
>> {\scratchtoks\emptytoks
>> \expanded{\scratchtoks{\the\scratchtoks\the\!!toksa}}%
>> \dorecurse{\numexpr\!!counta-\plusone\relax}
>> {\expanded{\scratchtoks{\the\scratchtoks\the\!!toksb}}}%
>> \expanded{\scratchtoks{\the\scratchtoks\the\!!toksc }}}
>>
>> \protect
>>
>> Hans, this needs to be changed in core-mat.tex. I do not know if
>> something can be done to avoid such errors in future.
>>
>> Wim, I am attaching a modified version of your file which gives the
>> correct output. (I needed to make some changes since I did not have
>> your map file for rsfs). You loose some symbols from the math
>> collection. I do not know how to add extra math symbol sets without
>> loosing these characters. Look at math-tim.tex to see how more
>> families can be supported. But I would suggest waiting for mkiv,
>> where the limit on font families will be removed and some of this
>> font mess would be cleaner.
>>
>> Aditya
>
>
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