[mpeg-OTspec] DAM2 comments

Levantovsky, Vladimir vladimir.levantovsky at monotype.com
Tue Sep 6 01:48:56 CEST 2016

On Monday, September 05, 2016 3:23 PM John Hudson wrote:

> On 03/09/16 17:05, Peter Constable petercon at microsoft.com [mpeg-OTspec] wrote:
>> Fourth, the Script/language sensitivity field has this:
>> “Can be used in any script with joining properties specified in the 
>> Unicode standard for joining-script shaping [20].”
>> The problem with that is that /every Unicode character/ has a 
>> Joining_Type property. The scripts of interest are those with 
>> characters that are right-, left- or dual-joining; this can also be 
>> characterized as scripts for which Joining_Type properties are given 
>> explicitly in ArabicShaping.txt.
> My original draft of the feature revisions explicitly referenced ArabicShaping.txt, since the OTWG discussion 
> regarding this concluded that >these features should be used solely to implement joining as specified in that 
> standard. Vlad asked to revise the texts because apparently MPEG has issues around referencing external standards. 

Strictly speaking, this wasn't the reason. Using explicit links as references in the text of the ISO standard is against ISO directives but since the document has the Bibliography section all links should go there. The reference [20] was added and it explicitly points to the ArabicShaping.txt but in order to include it in the text and in the Bibliography section we needed to give this reference a descriptive name, something that we can use in both the feature description and as a Bibliography entry. You proposed "Unicode standard for joining-script shaping" as its name and that was it. Since both the descriptive text and the new Bibliography entry are part of the same DAM2 document we can easily change it to any other descriptive name that you think would work best.

Thank you,

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