On 11/2/2021 05:43, Hans Hagen via ntg-context wrote:
> Hi,
>
> I uploaded a new lmtx. There is a new low level manual 
> (lowlevel-localboxes) that describes the extended local boxes 
> interface as well as a layer on top. New is that we have classes which 
> makes this (engine) mechanism more useable. It definitely is some low 
> level mechanism but you can for instance use if for high performance 
> efficient maginal notes and line numbering in controlled situations. 
> (There is some room fro optimization in the engien but I deal with 
> that later.)
>
> Hans
>

On the first run of MkIV (context --luatex) after updating my 
installation on Win11-x64, I get a complaint just after loading 
.../base/mkiv/syst-mac-lua :

    open source > level 1, order 11, name
    'C:/ConTeXt_LMTX/tex/texmf-context/tex/context/base/mkiv/syst-aux.mkiv'
    resolvers       > lua > loading file
    'C:/ConTeXt_LMTX/tex/texmf-context/tex/context/base/mkiv/syst-aux.lua'
    succeeded
    resolvers       > lua > loading file
    'C:/ConTeXt_LMTX/tex/texmf-context/tex/context/base/mkiv/syst-mac.lua'
    succeeded
    ! ^^^^ needs four hex digits.
    l.1506     {\unless\ifx##2^
                               ^^^3}%
    ?

If I let the build proceed, all seems to be well.

-- 
Rik