Tables and contextual rule for Katakana middle dot

[Yoshiro YONEYA]

Dear all,

Following is proposed modification to KATAKANA MIDDLEDOT definition 
in tables-05 document.  Excluding Alphabet and digit causes somewhat 
implications to existing registration, but I couldn't find legitimate 
explanation for including them as Japanese context.  How to deal with 
the implications is decision of registries.

Appendix A.12.  KATAKANA MIDDLE DOT
   Code point:
      U+30FB
   Overview:
      MUST be used with at least one Han, Hiragana or Katakana.
   Lookup:
      False
   Rule Set:
      False;
      For All Characters:
        If Script(cp) .eq. ( Han | Hiragana | Katakana ) Then True;
        If cp .in. U+3005..U+3007 Then True;
      End For;

Best regards,

-- 
Yoshiro YONEYA <yone at jprs.co.jp>

On Mon, 6 Apr 2009 19:12:58 +0900 Yoshiro YONEYA <yone at jprs.co.jp> wrote:

> Dear Patrik-san,
> 
> Japanese uses Hiragana, Katakana, Han, Alphabet letters (a-z), and 
> digit (0-9) for names.  KATAKANA MIDDLEDOT is usually used with those 
> names, so the following kind of case is really exists and used:
> 
>     Play<KATAKANA MIDDLEDOT>Station<KATAKANA MIDDLEDOT>4.jp
> 
> That is the reason why I said "Japanese context".
> 
> To be precise, Japanese scripts (for IDN) are consists from:
> 
>     Hiragana, Katakana, Han, Alphabet, Digit,
>     IDEOGRAPHIC CLOSING MARK, IDEOGRAPHIC NUMBER ZERO,
>     KATAKANA MIDDLEDOT and IDEOGRAPHIC ITERATION MARK
> 
> Extracting Alphabet and Digit from the list is unacceptable.
> 
> I'll try to express this ambiguous situation more clearly.
> 
> Regards,
> 
> -- 
> Yoshiro YONEYA <yone at jprs.co.jp>
> 
> On Mon, 6 Apr 2009 10:47:20 +0200 Patrik Fältström <patrik at frobbit.se> wrote:
> 
> > On 6 apr 2009, at 09.36, Yoshiro YONEYA wrote:
> > 
> > > Dear John-san and Patrik-san,
> > >
> > > In reality, in Japanese context, KATAKANA MIDDLEDOT (U+30FB) is used
> > > to compose names and to concatenate words, so it is used various  
> > > places.
> > > And sometimes preceeding and/or succeeding character is alphabet or  
> > > digit
> > > ([a-zA-Z0-9]).  Furthermore, KATAKANA MIDDLEDOT is sometimes placed at
> > > the beginning or the ending of names.
> > >
> > > Therefore, it is very difficult to define rule set for KATAKANA  
> > > MIDDLEDOT.
> > > What I can say is:
> > >
> > >    (KATAKANA MIDDLEDOT) MUST be used in Japanese context.
> > 
> > 
> > Yoneya-san,
> > 
> > Can you express this in more specific terms that can be included in  
> > the draft? Do you with "japanese" imply it has to be one of the  
> > japanese scripts (as John said) for example?
> > 
> >      Patrik