 --> [ local path prefix ]/event/duplicate_name.fpp:4:3
  |
4 |   event E severity activity low format ""
  |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ duplicate event name E
  |
 ::: [ local path prefix ]/event/duplicate_name.fpp:3:3
  |
3 |   event E severity activity low format ""
  |   --------------------------------------- previous occurrence is here

