Am 15.10.2011 um 14:48 schrieb Khaled Hosny:
> On Sat, Oct 15, 2011 at 02:44:18PM +0200, Wolfgang Schuster wrote:
>>
>> Am 15.10.2011 um 14:36 schrieb Khaled Hosny:
>>
>>> On Sat, Oct 15, 2011 at 02:02:28PM +0200, Andreas Richter wrote:
>>>> Hello,
>>>>
>>>> compiling the following with 'context'
>>>>
>>>> \starttext
>>>> \startformula
>>>> J:\blackboard{R}^\infty \rightarrow \blackboard{R},f \mapsto J[f]
>>>> \stopformula
>>>> \stoptext
>>>>
>>>> produces a blackboard 'J' character in J[f] instead of a $J$.
>>>
>>> I think it should be {\blackboard R} not \blackboard{R} (i.e. it is,
>>> traditionally at least, a font switch).
>>
>> No, the font switch is \bbd.
>
> So what is the correct syntax then, as I notice other issues in his
> example (the f is roman not italic) that disappear if \blackboard is
> grouped.
I’m sorry but you’re right. For MkII \blackboard has a argument but
in MkIV it is a font switch like \fraktur, \gothic etc.
Wolfgang
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