https://bugs.kde.org/show_bug.cgi?id=423775
Bug ID: 423775
Summary: IPTC title ("Object Name") not getting truncated at 64
characters in certain situations
Product: digikam
Version: 6.4.0
Platform: macOS Disk Images
OS: macOS
Status: REPORTED
Severity: normal
Priority: NOR
Component: Metadata-Iptc
Assignee: digikam-bugs-n...@kde.org
Reporter: hesyi...@gmail.com
Target Milestone: ---
SUMMARY
IPTC title ("Object Name") is not getting truncated at 64 characters when there
is an xmp file containing a long title.
STEPS TO REPRODUCE
1. Add a new jpeg photo (`myimage.jpeg`) to digikam, and go to "Captions" ->
"Description".
2. Enter a "Title" that is longer than 64 characters (e.g., "digiKam is an
advanced open-source digital photo management application that runs on Linux,
Windows, and MacOS") and click "Apply".
3.1. Use exiftool to check the image: `exiftool -G1 myimage.jpeg`.
3.2. As expected, the "[IPTC] Object Name" is truncated as 64 characters
("digiKam is an advanced open-source digital photo management appl").
4.1. Now add a raw file with the same name to the same directory (e.g.,
`myimage.nef`). It doesn't matter what the raw image is. It is just used to
generate a sidecar xmp file that contains a long title.
4.2. In digikam, click the raw file and add a "Title" that is longer than 64
characters ("digiKam is an advanced open-source digital photo management
application that runs on Linux, Windows, and MacOS") and click "Apply".
4.3. Now we have a xmp file with the same name (e.g., `myimage.xmp`). (We can
remove the raw image at this point.)
5. Go back to the jpeg file, and click "Information". Select any of the
template (e.g., "To remove") and click "Apply".
6. Run the same exiftool command again: `exiftool -G1 myimage.jpeg`.
OBSERVED RESULT
The object name is not truncated.
```
[IPTC] Object Name : digiKam is an advanced
open-source digital photo management application that runs on Linux, Windows,
and MacOS
```
EXPECTED RESULT
The object name should be truncated as before (in step 3.2).
```
[IPTC] Object Name : digiKam is an advanced
open-source digital photo management appl
```
SOFTWARE/OS VERSIONS
digikam: 6.4.0
macOS: 10.15.5
ADDITIONAL INFORMATION
Notice that when you edit the "Title" again and click "Apply", the IPTC Object
Name got truncated again.
I discovered this bug when I was working with both raw and jpeg file and
assigning the same title to both of them. For a long time I thought it was
normal for the IPTC title to be longer than 64 characters, until I removed the
raw file and discovered that the title got truncated
(http://digikam.1695700.n4.nabble.com/digiKam-users-Embedded-IPTC-title-in-JPEG-suddenly-started-to-get-truncated-at-64-characters-td4712640.html).
I think it is very confusing for the users to get this inconsistent behavior
(being able to have a title that is longer than 64 characters, but got
truncated with seemingly no reason later when they remove the raw file).
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