Re: png save broken in gimp edge ppa - There was an invalid UTF-8 string in the exif:ImageDescription

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Am Montag, 23. Mai 2016, 23:08:04 schrieb Jehan Pagès:
> Hi,

Hi.

[...]

> > **    exif:ImageDescription: ..:\w.*
> 
> According to the Exif spec
> (http://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf), even UTF-8
> should be invalid. This field is supposed to be ASCII only apparently
> (yes that's sucky, definitely). To use multi-byte encoding, such as
> UTF-8 (or others such as JIS), the right field is UserComment.

To make matters worse, the MWG guidelines [0] state that "Exif tags documented 
in the Exif specification as type ASCII SHOULD be written as UTF-8".

[...]

> All this said, it would be good if GIMP were more robust to
> otherwise-valid images, even with buggy metadata. In particular, it
> should not fail to export, but simply discard the wrong metadata field
> with a warning.

Or just copy the content verbatim, there might be a reason for it being the 
way it is.

> Could you please open a bug report about this issue so that we look
> into this issue?
> Thanks!
> 
> Jehan

Tobias

[...]

[0] http://metadataworkinggroup.org/pdf/mwg_guidance.pdf

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