On 12 Jun 2023, at = 19:47, Hans Hagen via ntg-context <ntg-context@ntg.nl> = wrote:

On = 6/12/2023 12:32 PM, Hans van der Meer via ntg-context = wrote:
On 12 Jun = 2023, at 11:12, Hans Hagen via ntg-context <ntg-context@ntg.nl> = wrote:

On 6/12/2023 10:57 AM, Hans van der Meer via ntg-context = wrote:
The manual LMTX-primitives on page = 21 tells me:
= You can explicitly freeze an unfrozen macro.
= ...
= A redefinition will now give: You can't redefine a frozen = macro.
But is this true? The following code seems to contradict = this:
\def\HOME{myhome}
\writestatus{1}{\meaning\HOME}
\letfrozen= \HOME
\writestatus{2}{\meaning\HOME}
\def\HOME{other = home}
\writestatus{3}{\meaning\HOME}
=EF=BF=BC
Is this = mechanism broken? It looks so useful to prevent accidental = redefinition!

here i run = with

\enabledirectives[overloadmode=3Derror]

(you can do = that in = cont-sys.mkxl)

\enabledirectives[overloadmode=3Dwarning]
Hans
Pity. Now I get on loading the tex file:
"csname = overload > fatal error, protection level 4, control sequence 'nbsp', = properties 'immutable', file 't-hvdm-text.tex', line 63
while I had = hoped that frozen would give me something like:
illegal attempt to = redefine \HOME
Byproduct (not unwanted) the above illegal = redefinition to be solved :-)
May I ask why obviously the = frozen-mechanism seems (yet?) unimplemented?
It's okay = and has been around for quite a while = now.

\enabledirectives[overloadmode=3Derror]

\starttext
<= br>    \frozen\def\HOME{!!!!}

=    \def\HOME{!!!!!}

\stoptext

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