Spec section: Avoid dupe titles; treat anchors as optional

[Elchi3]

It was a bit naive to think that we will find anchored links for all specification urls.
There are in fact a few features that won't have it, see mdn/browser-compat-data#10353
So, the renderer should check if it is there and only then display the anchor.

The other change is duplicate titles: Sometimes the w3c/browser-specs package uses the same title and shortTitle. Displaying both looks weird. So, we shouldn't do that. Test case: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at#specifications

[peterbe]

Before

After

For the record, I don't understand what the # stands for or means.
That anchor link, couldn't it be
"Additions to Properties of the Array Prototype Object" that is link text?

[Elchi3]

After

hm, some fancy things happened to white space during the commit. I'll look into it.

couldn't it be "Additions to Properties of the Array Prototype Object" that is link text?

Yeah, I reckon this would be better. I just learned last week that there is another package that provides this text: https://github.com/w3c/webref/blob/master/ed/headings/tc39-relative-indexing-method.json#L8

So, I think we probably want to follow-up and also integrate the webref package. (which is a bit larger package, but it contains many useful things for us. We also figured we can probably retire mdn/data and use webref, so that would be really cool then).

[peterbe]

If you can merge in https://github.com/Elchi3/yari/pull/337 I can take another closer look.

[peterbe]

For the record, I don't understand what the # stands for or means.
That anchor link, couldn't it be
"Additions to Properties of the Array Prototype Object" that is link text?

So the "Additions to Properties of the Array Prototype Object" stuff isn't available. OK.
But then I still wonder what # sec-array-prototype-additions really means?
I guess I still don't understand the point of this second line, from a reader's point of view.

[Elchi3]

So the "Additions to Properties of the Array Prototype Object" stuff isn't available. OK.
But then I still wonder what # sec-array-prototype-additions really means?
I guess I still don't understand the point of this second line, from a reader's point of view.

Yup, good point. The old tables do that, too, that's why I preserved it. I guess it is there to stress the fact that it is a deep link into the specification but I'm also not sure how useful it really is. It doesn't add that much value for sure now that's just the anchor and no proper link text (yet).