[NTG-context] Strange backgroundcolors with showgrid and luacode

Wolfgang Schuster wolfgang.schuster.lists at gmail.com
Fri Apr 26 14:28:14 CEST 2019

Otared Kavian schrieb am 26.04.2019 um 14:10:
> Dear all,
> When typesetting an old list of exercises, I noticed that when \showgrid is active and a luafunction is called, there is some unwanted and strange background colors (gray and blue, or yellow and blue). Thes background colors seems to show up on an unfilled page when a lua function is used, and I could come up with the following minimal example which gives the attached PDF.
> Could someone, please, tell me what I am doing wrong?

\showgrid highlights different page elements with colors but you can 
change the output



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