linenumbers in marking

linenumbers in marking

[Thomas A. Schmitz]

Hi all,

5 years ago, on the mailing list, there was a thread started by Pablo 
Rodríguez (http://www.mail-archive.com/ntg-context@ntg.nl/msg62140.html) 
about line numbers in headers. Wolfgang Schuster replied that in 
principle, it's possible to have line numbers in headers, "but it’s not 
usable because the numbers are always shown on the next page." He made 
the following example (which I have slightly adapted):

\definemarking[linenumber]

\define\LinenumberCommand
   {\normalexpanded{\setmarking[linenumber]{\linenumber}}}

\setuplinenumbering[command=\LinenumberCommand]

\startsetups linenumber

         \doiftext {
                 \getmarking[linenumber]
         }
         {
                 \getmarking[linenumber][top] – 
\getmarking[linenumber][bottom]
         }

\stopsetups

\setupheadertexts[\texsetup{linenumber}]

\starttext

\dorecurse{6}{\input tufte\par}

\startlinenumbering
\dorecurse{20}{\input knuth\par}
\stoplinenumbering

\resetmarking[linenumber]

\dorecurse{6}{\input tufte\par}

\stoptext

Hans wrote: "currently it's not possible but it's no big deal to add 
that feature at some point." I have now a similar problem with markings 
in a header. Is there a solution to this? Could it be implemented now?

Thanks, and best wishes

Thomas
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