From: Nikolai Weibull <now@...>
Date: 2007-11-01T00:15:29+09:00
Subject: Re: %s and utf8 ?

On 10/31/07, Wolfgang N�dasi-Donner <ed.odanow@wonado.de> wrote:

> Martin Duerst schrieb:

> > I think that eventually, somebody will come up with a solution
> > for this that at least covers the Western and East Asian cases,
> > but that may take some time.

> Unfortunately it is even difficult in european context

> In any Unicode encoding it is possible, that several codepoints together form a
> character. To solve all this details, the processing method must have access to
> the character description tables, and use a more complicated algorithm. I don't
> believe that there will be a general solution in the near future.

Dealing with grapheme clusters isn't /that/ difficult.  (And you can
always normalize to get decent results for most European scripts.)

If such handling isn't included in mainline Ruby, it will have to
provide hooks for a library to extend the handling of expandos.  You
should be able to

require 'encoding/unicode'

and have %*s work.