Deleting images by tag regex with --keep-by-hours doesn't work when --num is 0

[SylvainKds]

I have a scenario where I want to delete images with a tag matching a regex and keeping the ones for the last week.

The corresponding command is:

docker run --rm anoxis/registry-cli --no-validate-ssl -l ":" -r https://*** -i "my-image" --dry-run --delete --tags-like "^my-regex$" --num 0 --keep-by-hours 168

In that case however nothing is deleted, even tags which are older than one week.

As per my understanding this is because when computing the tags to delete there is an issue if the number of tags to keep is 0 (https://github.com/andrey-pohilko/registry-cli/blob/master/registry.py#L835):
tags_list_to_delete = ordered_tags_list[:-keep_last_versions]

Here when 'keep_last_versions' is 0, instead of taking the full list, it returns an empty list.
Should we have a specific case when '--num' is 0 and have something like:
if keep_last_versions == 0:
tags_list_to_delete = ordered_tags_list
else:
tags_list_to_delete = ordered_tags_list[:-keep_last_versions]