Undefined tag error message for directory conversion says header ID is not defined instead of tag ID

README.bigb

= Tmp

== Tmp 2
{tag=adsf}

convert:

ourbigbook .

outcome:

extract_ids: README.bigb
extract_ids: README.bigb finished in 43.47357300110161 ms
error:
README.bigb:4:1: cross reference to unknown id: "tmp-2"

expected outcome:

README.bigb:4:1: cross reference to unknown id: "asdf"

 Ancestors (3)