summary and details tag are no longer supported

[VadimKovalenkoSNF]

Before mobile-section deprecation mwoffliner used related JSON response to generate collapsible sections using Swig templates (see res/templates/section_wrapper.html file). Since page/html and page/mobile-html are responsible for outputting HTML content, no collapse sections are available. The symptom of this issue is mentioned in https://github.com/openzim/mwoffliner/issues/1860 and https://github.com/openzim/mwoffliner/issues/1866

There are multiple ways to bring these sections to work:

1. Apply page/html output and related transformations from mobileapps in mwoffliner.
2. Create our own collapsible sections but on top of page/mobile-html

[Jaifroid]

@VadimKovalenkoSNF I'm not quite sure how substitution happens in mwOffliner, but I've found that the following two steps easily restore the previous behaviour:

• Replace the <section data-mw-section-id="...">...</section> blocks with <details data-mw-section-id="...">...</details>;
• **Wrap*** (not replace) the <h[2-5]>...</h> blocks inside the new <details> blocks with <summary class="section-heading collapsible-heading">...</summary>.

I can provide a one-line regular expression JS replacement that does this if you operate on the html as a string, though I suspect you might prefer to use DOM methods to select and replace/wrap the elements.

I have a working solution in prototype code for the Kiwix JS PWA, but it would be much better to fix in the ZIM. Happy to give details if it's helpful.

[VadimKovalenkoSNF]

Thanks, @Jaifroid . I'll probably use DOM methods for this indeed, but your idea seems valid.