Re: i18n-ISSUE-407: Clarification of initial letter example

On Mon, Jan 26, 2015 at 9:16 AM, Richard Ishida <ishida@w3.org> wrote:

> 5.1 First Letter
> http://www.w3.org/TR/2014/WD-ilreq-20141216/#first-letter
>
>
> And then simply say, at the start of section 5.1 that selection of initial
> letters uses the orthographic syllable as the unit, as illustrated in
> section 2, and then simply give some examples. The majority of section 5.1
> could then focus on more specific requirements, such as what styles of
> highlighting are common, and what the alignment points, etc, are.
>
>
I have some concerns about the bottom alignment point. text-after-edge is
very problematic, as it is not visible but depends only on the value of the
descent metric. This also varies dramatically between fonts. The descent in
Chandas is more than twice that of Noto Sans Devangari. I've mocked up an
example that shows what happens when switching between these two fonts [1].

Many of the non-boxed examples in Richard's Flickr set [2]  seem to set the
bottom alignment point to the font origin (which would be the alphabetic
baseline).

[1] https://www.flickr.com/photos/130187794@N03/16381556682/

[2] https://www.flickr.com/photos/ishida/sets/72157650248400402/

Regards,

Dave