AsciiDoc TableOfContents doesn't handle code properly

[helfper]

When a title in AsciiDoc contains `inlined code`, it doesn't appear in the table of contents and multiple entries are created with the text surrounding it.

For example, this AsciiDoc:

== Some `code` in the title

Will generate a TOC with two entries pointing to the same place:

• Some
• in the title

(This is handled correctly in Markdown.)

[nancym]

I just installed v0.75.0/extended and none of my AsciiDoc TOCs are showing up. I use :toc: macro, which I wrote about in https://discourse.gohugo.io/t/asciidoc-and-toc-shortcode/19668/4. I really appreciate all the new AsciiDoc support so thank you all for that! For now, unfortunately, I need to revert to v0.74.3/extended.

[helfper]

@nancym That's because #7099 introduced a breaking change. I'm not a fan of the way things were done there, because it's a breaking change without leaving a flag to fall back on the previous behaviour. At the moment, it's not possible to preserve the ToC generated by Asciidoctor, you'd have to (re-)generate it on the Hugo side with the .TableOfContents variable.

[nancym]

Thank you for #7702 (comment)! Meanwhile I've played around with .TableOfContents in AsciiDoc layout files and will probably eventually use this so that my .adoc and .md content TOCs will look the same. But it's great to have the option to use pre-existing AsciiDoc TOCs.

[github-actions]

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