From: Pablo Rodriguez <oinos@gmx.es>
To: ntg-context@ntg.nl
Subject: Re: attachments working again (issue with /EmbeddedFiles)
Date: Fri, 14 Feb 2020 22:23:06 +0100 [thread overview]
Message-ID: <9adca6dc-76b6-f3dc-53fb-aef8c216a117@gmx.es> (raw)
In-Reply-To: <7f79f9c8-1672-6dda-a187-b6e1a5dda6f4@rik.users.panix.com>
On 2/14/20 3:43 AM, Rik Kabel wrote:
> [...]
> The further I look into bookmark, annotation, and attachment handling by
> a number of viewers, the more confusing things appear.
Hi Rik,
this is why following the prescription (the PDF spec) is better in order
to check the standard than gathering information in different viewers.
> And Acrobat still shows attachments twice under some circumstances,
> with the helpful flyover for one entry giving the location as the
> associated page number, and for the other giving it as the
> attachments tab.
That practice is explictly discouraged by the PDF Association, citing
the behaviour of some viewers (but not naming Acrobat). See
https://www.pdfa.org/wp-content/uploads/2018/10/PDF20_AN002-AF.pdf#search=usability.
> What is more troublesome on the ConTeXt side is the validation issue
> with the appearance dictionary for visible attachments.
This is my (educated?) guess: appearance dictionaries are required to
print annotation icons. This isn’t especially directed to attachments,
but to all annotation types (excepting popups and links).
> The difference between validators when looking at the hidden attachment
> in my example hinges on the handling of the attachment mime type. I have
> filed a defect report with VeraPDF, which appears to be rejecting valid
> mime type that includes a charset clause.
If this is a bug, they should fix it. They may have missed a valid MIME
type.
Pablo
--
http://www.ousia.tk
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prev parent reply other threads:[~2020-02-14 21:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-07 19:46 Pablo Rodriguez
2020-02-07 20:19 ` Rik Kabel
2020-02-07 20:55 ` Pablo Rodriguez
2020-02-07 21:37 ` Hans Hagen
2020-02-08 8:20 ` Pablo Rodriguez
2020-02-08 12:45 ` Peter Rolf
2020-02-08 17:32 ` Pablo Rodriguez
2020-02-08 21:13 ` Rik Kabel
2020-02-12 19:20 ` Pablo Rodriguez
2020-02-12 22:22 ` Rik Kabel
2020-02-12 23:45 ` Rik Kabel
2020-02-13 8:56 ` Hans Hagen
2020-02-14 2:43 ` Rik Kabel
2020-02-14 21:23 ` Pablo Rodriguez [this message]
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