[OpenType] Feature for JIS 4051/JLREQ widths

[Ken Lunde]

Behdad,

You definitely don't want to use 'hwid', because it would likely change the ASCII range into half-width versions for fonts that support this feature, and would affect standard (full-width) kana in a similar way.

Instead, look for my reply from earlier today in which I steered Eric to the 'halt' and 'vhal" features, whose descriptions are current in the ISO/IUEC 14496-22:2015 and match the discussions that we had last year.

Best...

-- Ken

> On May 24, 2016, at 11:07 AM, Behdad Esfahbod <behdad at behdad.org> wrote:
> 
> Message from OpenType list:
> 
> 
>> ****** Attachments to this email message have been removed ******
> 
> Hi Eric,
> 
> I don't remember what the resolution was, but we need a feature that can be
> declared default-on; otherwise that wouldn't be useful.  Does 'hwid' fit
> that bill?
> 
> On Tue, May 24, 2016 at 9:33 AM, Eric Muller <eric.muller at efele.net> wrote:
> 
>> Message from OpenType list:
>> 
>> 
>> You may remember that JIS 4051 and JLREQ assume that the nominal width
>> of some glyphs (e.g. brackets) is 0.5 em, while historically fonts have
>> a 1em width for those glyphs.
>> 
>> I seem to remember that we agreed a while back to have an OT feature
>> that would make the glyphs "conform" to JIS/JLREQ; IIRC, we settled on
>> the existing hwid, and on some rewording of its description. However, I
>> don't see that rewording in the OpenType spec. Does somebody remember
>> what we agreed on?
>> 
>> 
>> Thanks,
>> 
>> 
>> 
>> 
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> 
> 
> -- 
> behdad
> http://behdad.org/
> 
> 
> 
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