> On 13 Aug 2020, at 14:15, Pablo Rodriguez <oi...@gmx.es> wrote:
>
>>> My questions are: what is the restricted horizontal mode (as different
>>> from the horizontal mode)?
I forgot to answer this. Simple explanation:
* 'restricted horizontal mode' is inside an \hbox{} or something similar like a
header/footer,
where line breaks are forbidden
* ‘horizontal mode’ is inside a paragraph, where line breaks are possible
But the ‘restricted’ part is not relevant to your problem, \prevdepth is
forbidden in horizontal mode regardless of restrictions; it is only allowed in
vertical mode.
Somehow your table ends up being typeset in a horizontal context, based on the
error message (at least, if we assume that the error message was triggered by a
table).
But why that is? I do not have any other good ideas. And unfortunately lots of
different things in ConTeXt can trigger an implicit horizontal context.
For debugging, you could try adding this to the preamble (or grouped around
each xtable, for slightly less damage to the vertical spacing):
\let\prevdepth\relax
\newdimen\prevdepth
that should at least remove the error report. The vertical spacing in the pdf
output will be wrong (!!!), but perhaps the output can provide a clue about
what triggered the problem.
Best wishes,
Taco
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