[HTML5 Ruby] Step 20.2 of Segmentation & Categorization ... Really necessary?

Dear sirs,

I'm sorry that I failed to attach the subject to my previous mail.
Here I attach it, so I appreciate if anyone could reply to this mail
instead of previous mail.

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> Dear HTML5 editors,
>
> I'm wondering what is the meaning and necessities of Step 20.2 of
> "Segmentation and Categorisation of Ruby" [1].
>
> In short, step 20.2 skips inter-element whitespaces (IEWs) until
> <rt>,<rtc>,<rp> elemnts appears. Otherwise, these IEWs are processed
> as steps 23-25. For example, if it is <rb>, then it will be a subject
> of "commit an automatic base" of Step 22.
>
> However, even if <rt>,<rtc>,<rp> appears after the IEWs and Step 20.2
> is processed, it will proceed to Step 14 and then go to Step 17 (rp),
> Step 18 (rt) or Step 19 (rtc), resulting to proceed to <commit an
> automatic base> anyway.
>
> I think the main purpose of Step 20.2 is to limit the ruby base range
> not to include the IEWs adjacent to <rp>, <rt> or <rtc>, but if I were
> correct, the algorithm may need to be modified.
>
> Regards,
>
> [1] ...
http://www.w3.org/html/wg/drafts/html/CR/text-level-semantics.html#segmentation-and-categorisation-of-ruby

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KAWABATA, Taichi E-mail: kawabata.taichi@gmail.com