On 2022-04-19 10:47, Heinrich Paeßens via ntg-context wrote:
> Hi there
>
> just a quick question:
>
> Is there a command or package to embed the source-file (*.tex) into 
> the resulting pdf-file, just like in LaTeX using package »embedall« 
> <https://mirror.las.iastate.edu/tex-archive/macros/latex/contrib/embedall/embedall.pdf>?
>
> Many thanks and kind regards
>
> Heinrich
>
> <https://wiki.contextgarden.net/Command/_attachment>

You are looking for attachment 
<https://wiki.contextgarden.net/Command/_attachment>.

Note that the resulting pdf will not pass PDF/A validation, or at least, 
it did not at the last time I tested it a year ago.

-- 
Rik