w3c / w3c/clreq

Can long 'ruby text' overlap non-Hanzi characters, and how much?

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@ethantw is already working on this.

Since Jul 27, 2018.

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Description

3.3.4.1 Basic Requirements
https://w3c.github.io/clreq/#h-basic-requirements

  1. Annotations are allowed to extend to the top of adjacent base text as long as the minimum spacing is ensured.

This doesn't put any restrictions on
a. the type of characters that can be overhung
b. the distance the overhang can travel

I wondered about (a) because the TTML spec currently says that overhang is only allowed for hanzi. Is that correct? Are punctation marks or Latin base text excluded?

In jLReq the maximum overhang is usually the width of one ruby character. Are there any similar guidelines we should add to cLReq?

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