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   PID: Synchronet 3.20e-Linux master/9a746495e Mar 23 2025 GCC 12.2.0   
   TID: SBBSecho 3.24-Linux master/ad9ab307f Mar 18 2025 GCC 12.2.0   
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   https://gitlab.synchro.net/main/sbbs/-/merge_requests/506#note_6819   
      
   Rather than renaming `lastlinelen` to `lastcrcol`, I would *add* `lastcrcol`   
   and when a newline is sent, copy `lastcrcol` to `lastlinelen`.   
   --- SBBSecho 3.24-Linux   
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