Unicode normalization (userspace issue, but what the heck)

[H. Peter Anvin]

Followup to:  <pan.2004.02.15.03.33.48.209951@xxxxxxxxxxxxxx>
By author:    Matthias Urlichs <smurf@xxxxxxxxxxxxxx>
In newsgroup: linux.dev.kernel
> 
> Not locale, but normalization problems and identical-glyph problems.
> 
> Which is actually worse, because you don't have filenames which look
> like crap -- instead you have filenames which look perfectly sane, but
> they still do not work. Example: is an á one character, or is it an a
> followed by a composing ÂŽ?
> 
> Mac OSX, just as an example, only uses decomposed filenames. I don't know
> the current situation, but 10.2 has major problems when you try to access
> files with composite characters in their name (across NFS for instance).
> 
> I wonder if Linux, i.e. Linus ;-) should decree one single standard
> normalization. (I am NOT saying that enforcing this would be the kernel's
> job!)
> 

I believe that for most applications, normalization form C should be
used.

However, I suspect there are some applications for which this would
not apply.

	-hpa
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