Ihor Radchenko <yantar92@gmail.com> writes:

> Note that apart from the problem on Emacs side, there appears to be a
> problem with org-cite-basic-export-bibliography.
>
> org-cite-basic-export-bibliography uses org-cite-basic--print-entry,
> which fails to print keys, which are not in .bib files. As a result,
> #+print_bibliography: appears to fail all the time when the document
> contains invalid cite keys.
>
> I consider this as a bug. At least org-cite-basic-export-bibliography
> could provide a more useful error message. Or maybe even skip the
> invalid keys. Or, similar to LaTeX, print ???. I am not sure which way
> will be more canonical according to general oc.el design.

I am suggesting to merge the attached patch.
It will simply skip keys that are not in the bibliography when printing
it.

WDYT?