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Re: Response

1994-01-24 21:15:29
  From: Masataka Ohta 
  Date: Mon, 24 Jan 94 15:42:20 JST

  Have we agreed that ISO 10646 needs some profiling to be a MIME charset?

No, it does not need profiling to be used by MIME.  If it does, then
ASCII does too.

I'm afraid that you don't understand the fact that *no* character
set specifies the precise details of the graphical expression of the

Anyway, you should read RFC 1555.

  10646 here means DIS 10646-1.0 which is much better than the current IS.

Excuse me, but what purpose does it serve to keep recalling DIS 1?

Ask Mark Davis who said that the intention of MIME was to identify
DIS 1 as the charset.

It is dead and buried.

So bury Mark's longing with it.

  > (Unicode provides an detailed algorithm for determining presentation
  > order of 10646 characters within a line or paragraph--even in the
  > absence of presentation format codes.

  I have never seen any detailed algorithm in Uncode books.
  Where is it described?

Well, it may not be your idea of "detailed", but Appendix A in volume I,
along with corrections in Appendix D of volume II and erratta in TR #4
define an algorithm, which, if you possess only an average amount of
cleverness, will allow you to implement the Unicode BIDI algorithm in
real code without any problems.  Of course, it would help if you knew
something about Arabic or Hebrew too; so perhaps it will be a bit more
difficult for you.

Do you want to convince me that some necessary profiling information
for 10646 is provided by Unicode?

As I already know that I can't display Japanese text with UNICODE without
some profiling information, you don't have to do so.

                                                Masataka Ohta

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