Incorrect diagram directory in multilingual project with asciidoctor

[anlar]

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.107.0-2221b5b30a285d01220a26a82305906ad3291880+extended linux/amd64 BuildDate=2022-11-24T13:59:45Z VendorInfo=gohugoio

Does this issue reproduce with the latest release?

Yes.

Details

When using Hugo to render asciidoc articles containing diagrams by default it puts diagram images to the folder without language prefix even for multilingual projects.

Scenario 1 (single language) - OK

E.g. I have a project with a single language and an article content/post/post-3.ru.adoc with a diagram which will be rendered to:

$ tree public/post/post-3/
public/post/post-3/
├── index.html
└── sequence-diagram-example.svg

It works just fine, post-3 will reference its diagram from public/post/post-3 directory.

Scenario 2 (project with language directories) - FAIL

Now I have a project with several languages - each of them in its own directory, config.toml:

defaultContentLanguage = 'ru'
defaultContentLanguageInSubdir = true

post-3 will be put to (and tries to reference diagram from here):

$ tree public/ru/post/post-3/
public/ru/post/post-3/
└── index.html

But diagram still located in non-language directory:

$ tree public/post/post-3/
public/post/post-3/
└── sequence-diagram-example.svg

Workaround

For now I'm able to bypass that issue by manually setting image location in each article. From above example:

:imagesoutdir: public/ru/post/post-3

[github-actions]

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