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Dear Sirs I'm trying to run an old code that imports the t-scancsv module. However, I encountered an error message that did not happen before. The same error can be reproduced in the module package when I run "context list.tex". The error is on the line: \ doloopif {\ Flag} {~ =} {anl} {\ lineaction} don’t work anymore, the same for \ doloopif {\ Flag} {==} {anl} {\ lineaction} but \ doloopif {1} {= =} {1} {\ lineaction} is ok. And the error is <argument> \Email \mailto #1->\useURL [#1 ][mailto:#1][][#1]\from [{#1}] <argument> ...\bTD \ \flagpicture \eTD \bTD \fcol \ttx \mejl \eTD \eTR \expanded ...m_syst_helpers_expanded {\noexpand #1 }\m_syst_helpers_expanded \20>>1 ...v.gNumLine-1;}\else \blinehook \tempiii \elinehook \fi \nextrow \i... \syst_helpers_loop_yes ...helpers_recurse_content \endofloop ... l.81 \doloopif{\Flag}{~=}{anl}{\lineaction} Thanks for your support. This is LuaTeX, Version 1.08.0 (TeX Live 2018)