On Tue, 10 Nov 2020 at 18:25, Wolfgang Schuster <
wolfgang.schuster.lists@gmail.com> wrote:

> Sylvain Hubert schrieb am 10.11.2020 um 18:06:
>
> > Thanks for the suggestion, but as illustrated by the second example,
> > copied here, where the section title is at the top of the page:
> >
> >      \starttext
> >      \showframe
> >      \dorecurse{50}{a }
> >      \startsection[title=spec][before={\blank[preference,big]},
> > after={\blank[samepage,big]}]
>
> Your settings in the second argument of \startsection make no sense
> because the optional argument is for userdata (values like author etc.)
>
> >      \startxtable
> >      \startxrow
> >      \startxcell[ny=30]a\stopxcell\startxcell 1\stopxcell
> >      \stopxrow
> >      \dorecurse{29}{\startxrow\startxcell 2\stopxcell\stopxrow}
> >      \stopxtable
> >      \stoptext
> >
> > it is sometimes difficult to predict how much remaining space should
> > trigger a line break.
>
> You can either reformat your table or put the table in a float
> environment to move it to a place where it fits.
>
> Wolfgang
>

Weirdly enough, "\hskip 0pt" solves the problem.

    \setuphead[section][after={\blank[samepage]\hskip 0pt}]
    \starttext
    \showframe
    \dorecurse{50}{a }
    \startsection[title=spec]
    \startxtable
    \startxrow
    \startxcell[ny=30]a\stopxcell\startxcell 1\stopxcell
    \stopxrow
    \dorecurse{29}{\startxrow\startxcell 2\stopxcell\stopxrow}
    \stopxtable
    \stoptext

Sylvain