Can digiKam remove parent tags when I assign a deeper hierarchical tag?

Question

In digiKam, I sometimes reorganize hierarchical tags. For example, an image may already be tagged with:

- Tag 1
  - Tag 2

If I later add a new child tag under Tag 2 and assign it to the same image:

- Tag 1
  - Tag 2
    - Tag 3

then the image ends up assigned to both Tag 2 and Tag 3. Can digiKam automatically clean this up by removing the higher-level parent tags and keeping only the lowest-level tag?

user69369 · Accepted Answer

I guess you are not able to do this, because it would defeat the point of the nesting.

You can create the same tag a second time outside that hierarchy, but the point of

Animal
    Mammal
        Cat
        Human
    Insect
        Bumblebee
        Ant

is that Ant and Cat are both Animals, but not every Animal is a Mammal and/or Cat.

Therefore, when you look for the tag Animal, you will find all of the Animals. When you look for Mammals, you will only find Mammals - and so on.

If, on the other hand, you had a flat hiearchy:

Animal
Mammal
Cat
Human
Insect
Bumblebee
Ant

then there is no way that an image only tagged Cat will be found when looking for Animal.

In theory, you could have a routine that does the hierarchy-thing automatically, so while the picture only holds the tag Cat, your program puts it in Animals and so on. I am not sure if DigiKam (or any other program) can do that, and it would probably not be the best idea, as there is a chance that tags are ambiguous (e.g. Cat could also refer to Caterpillar Inc.'s machinery).

Can digiKam remove parent tags when I assign a deeper hierarchical tag?

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