Thanks Wolfgang. I set it by hand because I was using the light version and the bold version of the light one does not exist ;) I just put regular for the example.

On 28 April 2014 20:59, Wolfgang Schuster <schuster.wolfgang@gmail.com> wrote:

Am 28.04.2014 um 13:46 schrieb Flavien Lambert <petit.lepton@gmail.com>:

> Hi everyone, could you tell me how to use the Ubuntu font for the math command \max in the following example?
>
> \definefontfamily [mainface] [sans] [Ubuntu] [regularfont=ubuntu,italicfont=ubuntuitalic,boldfont=ubuntubold]
> \definefallbackfamily [mainface] [math] [Ubuntu] [preset=math:lowercaseitalic,tf=name:ubuntu]
> \definefontfamily     [mainface] [math] [Latin Modern Math]
>
> \setupbodyfont[mainface]
>
> \starttext
> $ abc \max$ abc max
> \stoptext

\definefontfamily [mainface] [sans] [Ubuntu]

\definefallbackfamily [mainface] [math] [Ubuntu] [preset=math:lowercaseitalic]
\definefallbackfamily [mainface] [math] [Ubuntu] [preset=math:lowercasenormal]

\definefontfamily     [mainface] [math] [Latin Modern Math]

\setupbodyfont[mainface]

\starttext
$ abc \max$ abc max
\stoptext

BTW: Why do you set the upright, italic etc. styles by hand?

> I am also interesting by knowing where I can find all the features "preset=math:" possible.

The presets are defined in font-eel.mkvi with the \definefontfamilypreset command.

Wolfgang

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