I have a long text with section headers partly in italics and/or emphasis. I'd like to setup the formatting in a way that overrules these.

\setuphead[section][style=\tfb\up]

In LaTeX there would be \upshape/\textup -- is there an equivalent in ConTeXt?

Did you try \tf ?


yes I did, unfortunately it doesn't work

Otherwise \emph{italics \emph{upright} italics} should work (didn’t try).

Nested emph to invert works. But my text has both italicised and regular headers -- both should be printed upright with the modified style.

Even though I can modify them manually in this present case, something like \upshape would be good to have.

Best
Florian.