if there's a global biblio in addition to the section ones, place the nocite citations in this biblio only.
if there are only the section-level bibliographies, insert the nocite in each of them. (Not sure why one would want that, but perhaps.)
A related issue is whether the filter should provide section-level nocites and how. One solution would be to use special Divs. (Tricky case: a nocite div is present at the top of a section level 1, but the filter is run asking for bibliographies at section level 2.)
As mentioned in https://github.com/pandoc-ext/section-bibliographies/issues/6#issuecomment-14752948936#issuecomment-1475294893 the filter ignores the metadata field
nocite. (Andsuppress-bibliography?)I can see two valid uses of the metadata
nocite:nocitecitations in this biblio only.nocitein each of them. (Not sure why one would want that, but perhaps.)A related issue is whether the filter should provide section-level nocites and how. One solution would be to use special Divs. (Tricky case: a
nocitediv is present at the top of a section level 1, but the filter is run asking for bibliographies at section level 2.)