Spec is out-dated and following wrong Git branch

[talex5]

Makefile and configure.sh are both pulling the spec from https://raw.githubusercontent.com/KhronosGroup/Vulkan-Docs/master/xml/vk.xml. However, the master branch is no longer updated and recent changes go on main instead.

I had a go at using that, but unsurprisingly the spec format has changed and breaks Olivine.

In particular, v1.2.162 has:

<member len="2*ename:VK_UUID_SIZE" altlen="2*VK_UUID_SIZE">

The len attribute is missing the latexmath: prefix.

The XML was fixed in v1.2.188 to:

<member len="latexmath:[2 \times \mathtt{VK\_UUID\_SIZE}]" altlen="2*VK_UUID_SIZE">

Olivine doesn't parse that either.

I could update the latex parsing to handle that perhaps, but I'm wondering if there's a reason that Olivine doesn't use the altlen attribute instead.
(xml/registry.rnc says "altlen - if len has latexmath equations, this contains equivalent C99 expressions separated by commas")

[Octachron]

Theoretically, it sounds indeed that altlen would be better. I don't remember if the field didn't exist in the first version of the spec, or if I didn't find it; or another possibility is that the "C99 expressions" were in fact worse to parse than the latex equations.

[talex5]

Thanks - I added a comment in #14 noting that altlen might be better.