Support numbered lists in tables split into separate rows

[ronaldtse]

In BSI we encountered numbered list items split into separate rows. The understanding back then is that such practice is ad-hoccery and does not require a semantic encoding.

However, this is now officially an ISO sanctioned practice:
https://www.iso.org/ISO-house-style.html

I wonder if there is something semantic we can do about it.

BSI issue:

• https://github.com/metanorma/metanorma-bsi/issues/197

[opoudjis]

This is dirty: it is a table, with two distinct table headings, but it is also a list.

If it is underlyingly a list, it is a list with two different labels for two different hierarchical levels. We do already allow lists to have titles; we could allow the nested first list to have a label too, and then have it carry over implicitly. So:

.Targets for productive capacity (area A)
. increased value addition in natural resource-based industries
+
--
.Indicator
** industry, value added (constant 2000 USD)
--

which parses, right now, as:

<ol id="_b56b9ef3-4961-b505-1aad-8ebe735adabc" type="arabic">
<name>Targets for productive capacity (area A)</name>
<li><p id="_c2237243-bbab-d5a6-0b62-1bfb6a295a80">increased value addition in natural resource-based industries</p>
<ul id="_268ddabd-c682-060e-9141-9391c1ebd3f8">
<name>Indicator</name>
<li><p id="_79a89c53-721d-2620-3e78-cac8ad59d716">industry, value added (constant 2000 USD)</p>
</li>
</ul>
</li>
</ol>

I could take a render=table attribute, look for the titles in the two nested columns, and read the desired ordered list labels from Presentation XML (I've just added them there as li/@label attributes.) So yes, it is (now) doable. I don't consider this high priority though...