# [NTG-context] Changing font for math function

Hans Hagen pragma at wxs.nl
Sun May 10 01:30:03 CEST 2015

On 5/9/2015 4:16 PM, Aditya Mahajan wrote:
> On Sat, 9 May 2015, Aditya Mahajan wrote:
>
>> On Sat, 9 May 2015, Hans Hagen wrote:
>>
>>>
>>> \setupmathematics
>>>   [functionstyle=\ss,
>>>    functioncolor=red]
>>>
>>> \starttext
>>> \startformula
>>>   f = \sin i\omega x^{\sin(x^{\sin(y)})}
>>> \stopformula
>>> \stoptext
>>>
>>> best test this because Mojca will at some point push into tex live
>>> (at which moment we have a current)
>>
>> Thanks. This works correctly on a small test. I will test this more
>> thoroughly.
>
> \sin etc should not behave like \text{...}. \text should adapt to the
> surrounding style while \mathoptext should not. In particular, in the
> following
>
>    {\ss $\sin x$}
>    {\bf $\sin x$}
>
> \sin should be in normal text upright font and not adapted to the
> surrounded
> text.
>
> Is it possible to set a value of functionstyle so that the surrounding
> text font
> styles are ignored (but the font size is not).

does

\setupmathematics
[functionstyle=\normalrm,
functioncolor=red]

work ok? (\rm is redefined in math mode so we need the outer one)

we could have some keywords for this if needed

> I realize that this takes us back to the old 'bold-math-in-section-heads'
> debate. With the current implementation:
>
>      \section{$\sin x$}
>
> sin is bold, and if you implement the change that I am suggesting, then
> \sin
> will not be bold in section titles. If someone prefers \sin to be bolded in
> \setupmathematics[functionstyle=\bf] in
> the section style as well.

the next stage of the math font project will provide some real bold
fonts (so bold alphabets get heavy variants)

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