> 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}
>> 
>> Is this mechanism broken? It looks so useful to prevent accidental
>> redefinition!
>
> here i run with
>
> \enabledirectives[overloadmode=error]
>
> (you can do that in cont-sys.mkxl)
>
> \enabledirectives[overloadmode=warning]
> 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?
dr. Hans van der Meer
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