\definefontalternative breaks font switches in math

\definefontalternative breaks font switches in math

[Florian Wobbe]

Dear typescript experts,

in an earlier Email I reported, that the font switches did not work in math mode. E.g.,

$\bf a=\alpha$
$\bi a=\alpha$

did not display bold math. It turned out that this happens when I invoke \definefontalternative.

Normaly \bf is defined like this:

*\show\bf
> \bf=\protected macro:
->\ifmmode \mathbf \else \normalbf \fi .
<*> \show\bf

After using \definefontalternative it looks different:

*\show\bf
> \bf=\protected macro:
->\setcurrentfontalternative {bf}.
<*> \show\bf

Minimal example:

% \definefontalternative [sb] % <-- uncomment me to break bold math
\starttext
  $\bf 3x^2+7x$
\stoptext

How to avoid this? Thanks for advice,
Florian

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Re: \definefontalternative breaks font switches in math

[Hans Hagen]

On 8-12-2010 9:18, Florian Wobbe wrote:
> Dear typescript experts,
>
> in an earlier Email I reported, that the font switches did not work in math mode. E.g.,
>
> $\bf a=\alpha$
> $\bi a=\alpha$
>
> did not display bold math. It turned out that this happens when I invoke \definefontalternative.
>
> Normaly \bf is defined like this:
>
> *\show\bf
>> \bf=\protected macro:
> ->\ifmmode \mathbf \else \normalbf \fi .
> <*>  \show\bf
>
> After using \definefontalternative it looks different:
>
> *\show\bf
>> \bf=\protected macro:
> ->\setcurrentfontalternative {bf}.
> <*>  \show\bf
>
> Minimal example:
>
> % \definefontalternative [sb] %<-- uncomment me to break bold math
> \starttext
>    $\bf 3x^2+7x$
> \stoptext


fixed in next beta

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________