Khaled Hosny wrote:
AFAICT, looking inside -output-directory is done by Web2c (shared by all
engines) and only when opening "input" files. I’m not sure what is the
implications of doing so when locating other kinds of files.
OK, thanks Khaled. I am certainly not in a position to comment on the
possible implications, but one way around the problem which seems
technically feasible to me were if a primitive could be added to XeTeX
to ascertain the attributes of the file associated with a given input
stream. With such a primitive, one could write (e.g.,),
\newread \PDFstream
\openin \PDFstream = <sought-file>.pdf
\edef \pdffile {\fileattribute \PDFstream {fullname}}
\closein \PDFstream
\XeTeXpdffile \pdffile
** Phil.
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