On Tue, May 2, 2017 at 8:47 AM, Jiri Eischmann <eischmann(a)redhat.com> wrote:
PDF
Many complaints about PDF support, mostly:
* Evince doesn't support non-ascii characters in PDF forms, this is a
major problem for many people.
* Some PDF forms refuse to work with anything but Acrobat Reader
although they may work just fine with Evince, faking a reader's
identity might be a solution here.
* Incomplete support for PDF 1.7.
The forms problem may be a lack of XFA support. [1] On the one hand,
XFA is considered proprietary and is not included in the ISO standards
applying to PDF; and yet on the other hand PDF 1.7 considers XFA
effectively mandatory. That's confusing.
Aside from XFA, there are also limitations Evince has with XMP in PDF.
A Simple-Scan document by default is PDF/A, and the creation and
modification dates are wrong in Evince, related to lack of XMP support
Poppler. [2] That's an unfortunate sequence, because it's good and
appropriate to use PDF/A for long term preservation of documents. But
then, oops, Evince can't be trusted to show the document's creation
date.
[1]
https://en.wikipedia.org/wiki/XFA
[2]
https://bugzilla.gnome.org/show_bug.cgi?id=781562