Tables and contextual rule for Katakana middle dot

[Harald Alvestrand]

Yoshiro YONEYA 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,
>
>   
Speaking with sadness:

If this is the case, I think we will have to declare KATAKANA MIDDLE DOT 
to have the same status as the apostrophe: Not permitted.

               Harald