No subject
Wed Jan 29 08:39:27 CET 2020
as separate scripts. From a functional or typographic point of view, they a=
re treated the same, which explains why a single script tag is used in Open=
Type.=20
So, to answer your question, I think it is the former.=20
I am simply trying to simplify the table without removing information, and =
my suggestion does precisely this.=20
Best...=20
-- Ken=20
> On Mar 31, 2016, at 4:44 PM, John Hudson <john at tiro.ca> wrote:=20
>=20
> On 31/03/16 14:29, 'Adam Twardoch (List)' list.adam at twardoch.com [mpeg-OT=
spec] wrote:=20
>=20
>> In Unicode, Hiragana and Katakana are classified as separate scripts, in=
OpenType, they share one script tag. There is nothing wrong with that by i=
tself =E2=80=94 the OpenType script tags are primarily a mechanism to activ=
ate a certain "script-specific processing sub-engine" within the OpenType L=
ayout engine, and both kana variants can be processed with the same sub-eng=
ine because their behavioral logic is practically the same.=20
>=20
> Out of idle interest:=20
>=20
> Is the implication of this that Katakana and Hiragana runs identified and=
separated by script itemisation =E2=80=94 based on Unicode script property=
=E2=80=94 are passed to a single layout engine that processes glyphs for b=
oth using features and lookups mapped in the <kana> OTL script tag?=20
>=20
> Or is the implication that Katakana and Hiragana, if adjacent, are rolled=
into a single 'kana' run before being passed to the layout engine?=20
>=20
>=20
> JH=20
>=20
> --=20
>=20
> John Hudson=20
> Tiro Typeworks Ltd www.tiro.com=20
> Salish Sea, BC tiro at tiro.com=20
>=20
> Getting Spiekermann to not like Helvetica is like training=20
> a cat to stay out of water. But I'm impressed that people=20
> know who to ask when they want to ask someone to not like=20
> Helvetica. That's progress. -- David Berlow=20
>=20
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link=3Dblue vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>=
<span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4=
97D'>That is exactly what I was trying to say: hiragana and katakana are se=
parate alphabets and, unless for some strange reasons they need to be bundl=
ed together they should be kept separate. From a functional or typographic =
point of view it makes sense to handle kanji, hiragana and katakana togethe=
r<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0pt=
;font-family:"Calibri",sans-serif;color:#1F497D'>Leonardo <o:p></o:p></span=
></p><p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Cali=
bri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><p class=3D=
MsoNormal><span lang=3DEN-GB style=3D'font-family:"Calibri",sans-serif;colo=
r:#1F497D;mso-fareast-language:ZH-CN'>Learn about <a href=3D"http://www.wim=
bridge.tv/bridgetplayer/index.html?videoId=3D56e2ec42c83add010026543d&s=
tartFlag&startFlag"><span style=3D'color:#0563C1'>CEDEO</span></a> in a=
video bridget<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB=
style=3D'font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-langua=
ge:ZH-CN'>Watch video bridgets of famous cities: </span><span lang=3DIT sty=
le=3D'font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:Z=
H-CN'><a href=3D"http://wimbridge.tv/bridgetplayer/index.html?videoId=3D569=
7701216868d0100dd8178&startFlag"><span lang=3DEN-GB style=3D'color:#056=
3C1'>London</span></a></span><span lang=3DEN-GB style=3D'font-family:"Calib=
ri",sans-serif;color:#1F497D;mso-fareast-language:ZH-CN'>, </span><span lan=
g=3DIT style=3D'font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-=
language:ZH-CN'><a href=3D"http://wimbridge.tv/bridgetplayer/index.html?vid=
eoId=3D56cb1f8bc83add01002653cb&startFlag"><span lang=3DEN-GB style=3D'=
color:#0563C1'>Madrid</span></a></span><span lang=3DEN-GB style=3D'font-fam=
ily:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:ZH-CN'>, </span=
><span lang=3DIT style=3D'font-family:"Calibri",sans-serif;color:#1F497D;ms=
o-fareast-language:ZH-CN'><a href=3D"http://wimbridge.tv/bridgetplayer/inde=
x.html?videoId=3D569e3b9116868d0100dd81cd&startFlag"><span lang=3DEN-GB=
style=3D'color:#0563C1'>Rome</span></a></span><span lang=3DEN-GB style=3D'=
font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:ZH-CN'>=
, </span><span lang=3DIT style=3D'font-family:"Calibri",sans-serif;color:#1=
F497D;mso-fareast-language:ZH-CN'><a href=3D"http://wimbridge.tv/bridgetpla=
yer/index.html?videoId=3D5696660b16868d0100dd8141&startFlag"><span lang=
=3DEN-GB style=3D'color:#0563C1'>Turin</span></a></span><span lang=3DEN-GB =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;ms=
o-fareast-language:ZH-CN'><o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'font-family:"Calibri",sans-serif;color:#1F497D;mso-fa=
reast-language:ZH-CN'>Create your own video bridget: <a href=3D"http://www.=
wimbridge.tv/"><span style=3D'color:#0563C1'>http://www.wimbridge.tv/</span=
></a> <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB style=
=3D'color:#1F497D;mso-fareast-language:ZH-CN'><o:p> </o:p></span></p><=
/div><p class=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Cali=
bri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style=
=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><=
p class=3DMsoNormal><b><span style=3D'font-size:11.0pt;font-family:"Calibri=
",sans-serif'>From:</span></b><span style=3D'font-size:11.0pt;font-family:"=
Calibri",sans-serif'> mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoo=
groups.com] <b>On Behalf Of </b>Ken Lunde lunde at adobe.com [mpeg-OTspec]<br>=
<b>Sent:</b> Friday, 01 April, 2016 02:06<br><b>To:</b> John Hudson <joh=
n at tiro.ca><br><b>Cc:</b> OTspec <mpeg-OTspec at yahoogroups.com><br><=
b>Subject:</b> Re: script tags update (Re: [mpeg-OTspec] Digest Number 549)=
<o:p></o:p></span></p></div></div><p class=3DMsoNormal><o:p> </o:p></p=
><p class=3DMsoNormal> <o:p></o:p></p><div id=3Dygrp-mlmsg><div id=3D=
ygrp-msg><div id=3Dygrp-text><p style=3D'margin-bottom:12.0pt'>John, <br><b=
r>From Unicode's point of view, it makes sense to have Hiragana and Katakan=
a as separate scripts. From a functional or typographic point of view, they=
are treated the same, which explains why a single script tag is used in Op=
enType. <br><br>So, to answer your question, I think it is the former. <br>=
<br>I am simply trying to simplify the table without removing information, =
and my suggestion does precisely this. <br><br>Best... <br><br>-- Ken <br><=
br>> On Mar 31, 2016, at 4:44 PM, John Hudson <john at tiro.ca> wrote=
: <br>> <br>> On 31/03/16 14:29, 'Adam Twardoch (List)' list.adam at twa=
rdoch.com [mpeg-OTspec] wrote: <br>> <br>>> In Unicode, Hiragana a=
nd Katakana are classified as separate scripts, in OpenType, they share one=
script tag. There is nothing wrong with that by itself =E2=80=94 the OpenT=
ype script tags are primarily a mechanism to activate a certain "scrip=
t-specific processing sub-engine" within the OpenType Layout engine, a=
nd both kana variants can be processed with the same sub-engine because the=
ir behavioral logic is practically the same. <br>> <br>> Out of idle =
interest: <br>> <br>> Is the implication of this that Katakana and Hi=
ragana runs identified and separated by script itemisation =E2=80=94 based =
on Unicode script property =E2=80=94 are passed to a single layout engine t=
hat processes glyphs for both using features and lookups mapped in the <=
kana> OTL script tag? <br>> <br>> Or is the implication that Katak=
ana and Hiragana, if adjacent, are rolled into a single 'kana' run before b=
eing passed to the layout engine? <br>> <br>> <br>> JH <br>> <b=
r>> -- <br>> <br>> John Hudson <br>> Tiro Typeworks Ltd www.tir=
o.com <br>> Salish Sea, BC tiro at tiro.com <br>> <br>> Getting Spiek=
ermann to not like Helvetica is like training <br>> a cat to stay out of=
water. But I'm impressed that people <br>> know who to ask when they wa=
nt to ask someone to not like <br>> Helvetica. That's progress. -- David=
Berlow <br>> <o:p></o:p></p></div><div><p class=3DMsoNormal><span style=
=3D'color:white'><o:p></o:p></span></p></div></div></body></html>
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