Thank you so much, Pablo. This is exactly what I needed.

Could you also tell me where you have learnt these features? I had been
searching for this for hours but \effect was still the best of what I've
got. Indeed, googling 'context+tex+boldened' or 'contextgarden+boldened'
results in nothing useful.

Sylvain

On Sat, 7 Nov 2020 at 16:41, Pablo Rodriguez <oinos@gmx.es> wrote:

> On 11/7/20 4:06 PM, Sylvain Hubert wrote:
> > [...]
> > Could anyone help me define a {\bf}-aware version of \fakebf which can
> > render the "4 5 6" in the example above in latinmodern's bold?
>
> Hi Sylvain,
>
> there is an already defined font feature that fakes boldened fonts:
> boldened (and also boldened-10, boldened-15, boldened-20 and boldened-25
> [boldened is actually boldened-30]).
>
> But I don’t use \definefont myself, so this is my sample:
>
>     \definefontfamily[mainface][rm][Latin Modern Sans]
>         [bf={style:tf, features:{default, boldened}}]
>     \setupbodyfont[mainface]
>     \starttext
>     normal \bf boldened
>     \stoptext
>
> Handle with care, since faked fonts are to be used sparingly,
>
> Pablo
> --
> http://www.ousia.tk
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>