Re: A Great Idea (tm) about reimplementing NLS.

From: Måns Rullgård
Date: Thu Jun 16 2005 - 04:41:58 EST

Lukasz Stelmach <stlman@xxxxxxxxx> writes:

> Lennart Sorensen napisaÅ(a):
>>>And it is good in a way, however, i think kernel level translation
>>>should be also possible. Either done by a code in each filsystem or by
>>>some layer above it.
>> What do you do if the underlying filesystem can not store some unicode
>> characters that are allowed on others?
> That's why UTF-8 is suggested. UTF-8 has been developed to "fool" the
> software that need not to be aware of unicodeness of the text it manages
> to handle it without any hickups *and* to store in the text information
> about multibyte characters.What characters exactly you do mean? NULL?
> There is no NULL byte in any UTF-8 string except the one which
> terminates it.

That's exactly how ext3, reiserfs, xfs, jfs, etc. all work. A few
filesystems are tagged as using some specific encoding. If your
filesystem is marked for iso-8859-1, what should a kernel with a
conversion mechanism do if a user tries to name a file ê?

>> I think UDF is a better filesystem for many types of media since it is
>> able to me more gently to the sectors storing the meta data than VFAT
>> ever will be.
> I've tried cd packet writing with UDF and it gives insane overhead of
> about 20%. What metadata you'd like to store for example on your
> flashdrive or a floppy disk?

Filename, timestamps, all the usual.

MÃns RullgÃrd
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