Editorial questions

Vint Cerf vint at google.com
Sun Nov 22 20:02:10 CET 2009


i agree with mark on the titling matter.

as to the code points, we should surely include all that are part of  
the unicode scope.

vint


On Nov 22, 2009, at 1:09 PM, Mark Davis ☕ wrote:

> http://unicode.org/Public/UNIDATA/UnicodeData.txt is only part of  
> the Unicode data; if you only look at that file, you get a very  
> incomplete view of the Unicode data and properties. It doesn't list  
> reserved characters, so for example,
> F0000;<Plane 15 Private Use, First>;Co;0;L;;;;;N;;;;;
> FFFFD;<Plane 15 Private Use, Last>;Co;0;L;;;;;N;;;;;
> 100000;<Plane 16 Private Use, First>;Co;0;L;;;;;N;;;;;
> 10FFFD;<Plane 16 Private Use, Last>;Co;0;L;;;;;N;;;;;
>
>
> You don't see the code points U+FFFFE and U+FFFFF either. The fact  
> that Unicode goes from 0..10FFFF is in the core specification (see http://www.unicode.org/versions/Unicode5.2.0/) 
> . UTS #44 Unicode Character Database (http://www.unicode.org/reports/tr44/ 
> ) should also be referenced, since it explains the data formats.
>
> As for the titles, I think the more important feature is having  
> either all or none of them start with "Internationalized Domain  
> Names for Applications (IDNA):", and having Tables and Bidi in in  
> the titles.
>
> Mark
>
>
> On Fri, Nov 20, 2009 at 13:16, Harald Alvestrand  
> <harald at alvestrand.no> wrote:
> Mark Davis ☕ wrote:
> I noticed in http://tools.ietf.org/id/draft-ietf-idnabis- 
> tables-07.txt the following:
>
> E01F0..EFFFD; UNASSIGNED  # <reserved>..<reserved>
>
> EFFFE..10FFFE; DISALLOWED # <noncharacter>..<noncharacter>
> It is missing 10FFFF.
>
> The Unicode data table /UnicodeData.txt) doesn't tell us what 10FFFE  
> and 10FFFF are; the last character listed is 10FFFD (Plane 16  
> Private Use, Last).
>
> On the other hand, Blocks.txt says:
>
> unicode/Blocks.txt:100000..10FFFF; Supplementary Private Use Area-B
>
> So is there a distinction between 10FFFD, 10FFFE and 10FFFF, and  
> does this document need to make that distinction?
>
> (I think it's unreasonable to allow any of them in domain names, so  
> they should all be DISALLOWED, but i'm not surprised that there's  
> inconsistencies here.)
>
>
> The titles of the documents are inconsistent: The first three below  
> have a prefix, and the last 3 are missing it. Also, the first three  
> use titlecase (Background, Explanation, and Rationale have B, E, and  
> R capitalized), and the next two don't. It might also be nice to  
> have "BIDI" someplace in "Right-to-left scripts for IDNA", and  
> "Tables" somewhere in "The Unicode code points and IDNA"
> The RFC Editor has strong opinions on where to use titlecase. I  
> always get changes when I submit RFCs, so I have left that  
> evaluation on his table.
>
>
>
>    * Internationalized Domain Names for Applications (IDNA):
>
>      Definitions and Document Framework -
>      http://tools.ietf.org/html/draft-ietf-idnabis-defs
>    * Internationalized Domain Names in Applications (IDNA): Protocol
>      - http://tools.ietf.org/html/draft-ietf-idnabis-protocol
>    * Internationalized Domain Names for Applications (IDNA):
>      Background, Explanation, and Rationale -
>      http://tools.ietf.org/html/draft-ietf-idnabis-rationale
>    * Right-to-left scripts for IDNA -
>      http://tools.ietf.org/html/draft-ietf-idnabis-bidi
>    * The Unicode code points and IDNA -
>      http://tools.ietf.org/html/draft-ietf-idnabis-tables
>    * Mapping Characters in IDNA -
>      http://tools.ietf.org/html/draft-ietf-idnabis-mappings
>
>
>
> Mark
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