Am 04.11.2025 um 16:42 schrieb vm via ntg-context:
Given a chunk of text,
8<---
\setuppapersize[A1]
\setupheader [state=empty, no]
\usetypescript[ibmplex]
\setupbodyfont[ibmplex, mono, 10pt]
\setupinterlinespace[12=pt]
\hyphenation[off]
\definelayer[behindtext]
\definelayer[beforetext]
\setupbackgrounds[text][background={behindtext,foreground,beforetext}]
\definecolor[achter][r=.95,g=.95,b=.95]
\startTEXpage[offset=10mm]
\setlayer[behindtext][x=63mm,y=0mm]{\framed[width=2mm,height=\textheight,background=color,backgroundcolor=achter,frame=off]{}}
\setlayer[behindtext][x=139mm,y=0mm]{\framed[width=2mm,height=\textheight,background=color,backgroundcolor=achter,frame=off]{}}
\setlayer[behindtext][x=\MPx{period-1}]{\blackrule[width=2mm,height=th,color=achter]}
\setlayer[behindtext][x=\MPx{period-2}]{\blackrule[width=2mm,height=th,color=achter]}
\startlines
~~~~~~~~~~~~~~~~~~~~~~~~~.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~.~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~\hpos{period-1}{.}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\hpos{period-2}{.}~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~haken~&~ogen~~~~~~~~~~~~~~~~~~~~~~~~~~~~taxatie~&~advies~~~~~~~~
~~~~~~~~~~~~~~~~bloemen~&~planten~~~~~~~~~~~~~~~~inspireren~&~innoveren~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~rijst~&~linzen~~~~~~~~~~~~~~~~~~~~~~~~~~mager~&~bleek~~~~~~~~~~~~~~~
\stoplines
\stopTEXpage
\stoptext
--->8
what would be the simple way to extract the position of the two period
(.) symbols in the first line, to be used in the two vertical bars
definitions above.
See above, use \hpos to mark the content where you need the position and
\MPx to access the horizontal position.
Wolfgang
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