@Hans putting otf version of fontawesome instead of ttf version made it for
the command
        context --global symb-imp-fontawesome.mkiv
Thank you for your quick response.

Le sam. 11 avr. 2020 à 16:20, kaddour kardio <kaddourkardio@gmail.com> a
écrit :

> this is a part of my log file.
> i have ttf-fontawesome installed in my system , maybe i should switch off
> to otf version?
>
>       defining > unknown font 'fontawesome5brandsregular400', loading
> aborted
>       fonts           > defining > unable to define
> 'fontawesome5brandsregular400.otf' as 'thedefinedfont--0'
>       fonts           > defining > forced type 'otf' of
> 'fontawesome5brandsregular400' not found
>       fonts           > defining > font with asked name
> 'fontawesome5brandsregular400' is not found using      lookup 'file'
>
> Le sam. 11 avr. 2020 à 16:12, kaddour kardio <kaddourkardio@gmail.com> a
> écrit :
>
>> To Aditya this works as expected thank you.
>> To Hans when i run the command i get "deja vu sans" symbolset instead .
>>
>> Le sam. 11 avr. 2020 à 10:49, Hans Hagen <j.hagen@xs4all.nl> a écrit :
>>
>>> On 4/11/2020 10:48 AM, Aditya Mahajan wrote:
>>> > On Fri, 10 Apr 2020, kaddour kardio wrote:
>>> >
>>> >> Hi, if there any changes in the interface for using symbols?
>>> >> I tried today the example from Aditya's Blog but it shows no symbols:
>>> >>
>>> >> \definetypeface[mainfont][rm][specserif][Linux Libertine O][default]
>>> >> \definetypeface[mainfont][mm][math] [TeX Gyre Pagella Math][default]
>>> >> \definetypeface[mainfont][tt][mono] [Dejavu Mono][default]
>>> [rscale=0.8,
>>> >> features=none]
>>> >> \setupbodyfont[mainfont,11pt]
>>> >> \usesymbols[fontawesome]
>>> >>
>>> >> \define\FA{\dosingleargument\doFA}
>>> >> \def\doFA[#1]{\inlinedbox
>>> >>    {\scale[height=1em]{\symbol[fontawesome][#1]}}}
>>> >>
>>> >> \starttext
>>> >> Checked box \FA[check-square-o]
>>> >> Unchecked box \FA[square-o]
>>> >> \stoptext
>>> >> i use luamtetex for archlinux with all luatex modules linked to lmtx
>>> >> folder
>>> >
>>> > The names of the symbols have changed in fontaweson 5.0. Try:
>>> >
>>> > \FA[check] \FA[check_empty]
>>> fwiw, if you do:
>>>
>>>    context --global symb-imp-fontawesome.mkiv
>>>
>>> you get a pdf file that shows all names and symbols
>>>
>>> Hans
>>>
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>>>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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>>
>>
>> --
>> Dr YAHYAOUI Mohamed Kaddour, cardiologue  .
>>
>
>
> --
> Dr YAHYAOUI Mohamed Kaddour, cardiologue  .
>


-- 
Dr YAHYAOUI Mohamed Kaddour, cardiologue  .