Bug#847462: the problem is with CUPS

[Martin-Éric Racine <martin-eric.racine@iki.fi>]

2017-03-03 18:25 GMT+02:00 Francesco Potortì <Potorti@isti.cnr.it>:

> This apparently has to do with the old problem of cups-pdf converting
> PDF to PS and back to PDF.
>
> I have an old Ubuntu Lucid installation where the problem does not
> exist.

Debian and Ubuntu both briefly used a patch (around version 2.5.1
IIRC) that bypassed the pdf2pdf filter.  It worked well for simply
passing documents that were already in PDF format over to CUPS for
output to a PDF spool.  However, it completely broke CUPS-PDF's
primary functionality which is to convert arbitrary document formats
into PDF, and it also prevented users from further manipulating the
documents via CUPS-PDF's configuration file options before outputting
them to the PDF spool. This resulted in complaints from users who
depended upon these features, so I removed the patch.

Martin-Éric