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RE: New Thread - FVS Assignment MisMatch

From: Greg Eck <greck@postone.net>
Date: Thu, 6 Aug 2015 02:37:06 +0000
To: Richard Wordingham <richard.wordingham@ntlworld.com>
CC: "jrmt@almas.co.jp" <jrmt@almas.co.jp>, "public-i18n-mongolian@w3.org" <public-i18n-mongolian@w3.org>
Message-ID: <BN3PR10MB03217215B2E0E638ADF56043AF740@BN3PR10MB0321.namprd10.prod.outlook.com>
Hi Richard,

I am not quite clear on your reply. If we deal only with the textual specification, are you saying that the actual current spec for U+1820 should look like this with the "NotUsed" lines actually in the spec? I am not talking about the implementation at this point.

ISOLATE
1820+NoFVS	SpecificationDescription
1820+FVS1	SpecificationDescription
1820+FVS2	NotUsed
1820+FVS3	NotUsed
INITIAL
1820+NoFVS	SpecificationDescription
1820+FVS1	NotUsed
1820+FVS2	NotUsed
1820+FVS3	NotUsed
MEDIAL
1820+NoFVS	SpecificationDescription
1820+FVS1	SpecificationDescription
1820+FVS2	SpecificationDescription
1820+FVS3	NotUsed
FINAL
1820+NoFVS	SpecificationDescription
1820+FVS1	SpecificationDescription
1820+FVS2	NotUsed
1820+FVS3	NotUsed

Greg


-----Original Message-----
From: Richard Wordingham [mailto:richard.wordingham@ntlworld.com] 
Sent: Thursday, August 6, 2015 10:23 AM
To: Greg Eck <greck@postone.net>
Cc: jrmt@almas.co.jp; public-i18n-mongolian@w3.org
Subject: Re: New Thread - FVS Assignment MisMatch

On Thu, 6 Aug 2015 01:56:08 +0000
Greg Eck <greck@postone.net> wrote:

> If we take one example from the font comparator site 
> (http://r12a.github.io/scripts/mongolian/variants ) and look at
> U+1820. We see that Isolate+FVS1 is specified. Isolate+FVS2 AND
> Isolate+FVS3 are not specified as they are "don't care conditions".
> These two sequences are left to the judgment of the font designer to 
> handle.

No.

<U+1820, FVS3> must be treated the same as U+1820, for the variation sequence is not defined.  Once <U+1820, FVS2> ceases to be specified for any position, then the same will apply to <U+1820, FVS2>.

It is not clear what should happen if only some positional variants are defined for a variation sequence.

Richard.
Received on Thursday, 6 August 2015 02:37:41 UTC

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