Sylvain Hubert schrieb am 04.11.2020 um 15:53:
> Dear List,
>
> I was reading workflow-mkiv 
> <http://www.pragma-ade.nl/general/manuals/workflows-mkiv.pdf> and have 
> found the '--errors' and '--noconsole' arguments which seemed quite 
> helpful since, according to the documentation, "show errors at the end 
> of a run" and "disables logging to the console" while "error reporting 
> mentioned in the previous section will never be silenced". But when I 
> run 'context --errors' for the following document
>
> \setuppagenumbering[footer]
>     \starttext
>     hi
>     \stoptext
>
> the message
>
>     setup           > error in line 1, namespace 'pagenumbering', key 
> 'footer,'
>
> still lies in the middle of a bunch of messages and is not shown in 
> the end. When I add '--noconsole' to the arguments, the error 
> disappears along with all the other messages.

--errors adds extra information to the log, try the following example 
with and without the option

\usemodule[unknown]

\starttext
\stoptext

Wolfgang