[OpenAFS-devel] AFS vs UNICODE

[Roland Kuhn]

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Hi Jeffrey!

On 6 May 2008, at 20:22, Jeffrey Altman wrote:

> Garrett Wollman wrote:
>> <<On Tue, 06 May 2008 10:04:17 -0400, Jeffrey Altman <jaltman@secure-endpoints.com 
>> > said:
>>>   1. MacOS X and Linux clients begin to apply NFC to all UTF-8  
>>> strings
>>>      obtained from the operating system whether for directory  
>>> lookup,
>>>      object creation, or symlink target creation.
>> How do they know it's a UTF-8 string?  Traditional Unix semantics
>> provide that a file name is a byte sequence, not a character
>> sequence.
>
> There are algorithms you can use to validate utf-8 sequences.
>

Well, certainly. But I find it very irritating that a filesystem  
should somehow interpret and _change_ a filename based on the  
assumption of UTF-8 encoding, even if the filename's byte sequence  
happens to conform to the UTF-8 rules. Why bother? It's much easier  
and much more portable to regard filenames as opaque byte sequences.

I appreciate that don't have contributed much, so you are free to  
ignore my ranting, but if there's a technical problem with the above,  
I'd really like to hear the arguments, even in sketchy form.

Ciao,
                     Roland

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