One line per token doesn't work, because line information seems only to be stored in the COP node. A COP seems to be emitted only on statement boundaries. But see also Re^4: How can I get the current OP address (akin to PC)?

In reply to Re^3: Identifying a location with finer granularity than a line number by rockyb
in thread Identifying a location with finer granularity than a line number by rockyb

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