Re: [css-ruby] ruby offset affected by font?

On Wed, May 20, 2015 at 8:49 PM, Shinyu Murakami <murakami@vivliostyle.com>
wrote:

>
> I guess this gap is caused by the TypoLineGap [1] value of the font
> metrics.
> MS Mincho and IPAMincho's TypoLineGap value is 0 and Meiryo's is 1024 (1/2
> of unitsPerEm 2048).
>
> This value is "to compute a typographically correct default line spacing"
> [1] and should not used for ruby positioning.
>

I don't really know what causes the large gap of Meiryo, since I'm not that
familiar with font metrics. But AFAICS, the spacing is not because of
TypoLineGap.

I made a copy of Meiryo with TypoLineGap being 0, but it doesn't seem to
have any difference on the rendering result.

- Xidorn