From: Yukihiro Matsumoto <matz@...>
Date: 2005-01-14T00:31:14+09:00
Subject: Re: The face of Unicode support in the future


In message "Re: The face of Unicode support in the future"
    on Fri, 14 Jan 2005 00:15:39 +0900, Eivind Eklund <eivind@FreeBSD.org> writes:

|> Can you imagine any edge case?
|
|Yes.  I'll use one that has bit me in other directions: Input comes from
|a database and a web form.  The subsystems provide strings with different
|encoding.  During tests, programmers use english for testing (most
|programmers I know prefer using english for all code development including
|tests, even if their native language is norwegian/german/etc).  The tests
|work correctly.  When the system is set in production, things start to
|fall apart.

Hmm, interesting case.  Let me think about it.

By the way, the comparison rule I described was wrong.  It should be:

> the comparison of two string with different encoding is always false
> unless:
>
>   * the encoding of one string is ASCII 
>   * the encoding of other string is ASCII compatible
>   * they have same (7 bits) ASCII character sequence

that means comparison between two strings with non-ASCII encoding
always gives false.

							matz.