> Am 09.05.2015 um 13:46 schrieb Hans Hagen <pragma@wxs.nl>:
> 
> On 5/9/2015 2:03 AM, Aditya Mahajan wrote:
>> Hi,
>> 
>> There is a question on TeX.SX asking how to change the font of \sin,
>> \cos, etc.
>> 
>> http://tex.stackexchange.com/q/243893/323
>> 
>> I looked at the code, and there does not appear to be an easy solution.
>> The \mathfunctionlabeltext command has \mathupright hard coded.
>> 
>> One option is to keep this configurable using \setupmathematics, perhaps
>> mfunction=(normal|italic|sans).
>> 
>> In any case, I think that the current implementation is a bug. The
>> default font for mathfunctionlabeltext should be typeset in the bodyfont.
> 
> this is evil (as it's unpredictable, so no support for side effects):
> 
> % \prependtoks \rm \to \everymathematics

Is there no better way to use upright letters in math except the line above?

Wolfgang