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From Stefan Sperling <s...@elego.de>
Subject Re: question about subversion 1.9 unicode normalization status
Date Tue, 11 Aug 2015 23:12:22 GMT
On Tue, Aug 11, 2015 at 05:11:10PM -0500, Dave Huang wrote:
> On Aug 11, 2015, at 15:35, Branko ─îibej <brane@wandisco.com> wrote:
> > 
> > On 10.08.2015 18:46, Attila Soki wrote:
> >> hi,
> >> 
> >> i saw the entry "reimplement UTF-8 fuzzy conversion using utf8proc (r1511676)"
> >> in the changelog and hoped this would be the fix for
> >> http://subversion.tigris.org/issues/show_bug.cgi?id=2464
> >> 
> >> but after a quick test it seems to be still broken.
> > 
> > In my not even a bit humble opinion, what's broken is Apple's HFS, not
> > Subversion.
> 
> Exactly what is broken in Apple's HFS? MacOS uses one of the Unicode Normalization Forms.
Perhaps it's not the same one that Windows uses, but there's nothing wrong with that. While
it's unfortunate that SVN didn't handle this correctly from the start, it doesn't make it
Apple's fault. Unicode 2.0 talked about normalization/canonicalization in 1996, and TR 15
has been around since about the same time--both predating SVN's development by years. Of course,
most people weren't thinking about Unicode back then, and a filename was considered to be
some opaque string of bytes, so I don't particularly blame SVN either. If anything, Unicode
should've just declared one canonical form instead of giving options. But while HFS(+) is
old and is due for an overhaul, its use of Unicode NFD isn't broken.

Arguing about SVN/Unicode/Apple is all fun and well but won't help with
fixing this problem. Note that Branko was working on this issue for 
quite a while and eventually ran into walls in the FSFS filesystem code.
So I would interpret his statement more as a sign of hard earned
frustration than an actual gripe at whoever came up with HFS(+). He's even
using a mac so it's not like this issue didn't affect him at all.

If anything is needed it's probably kind and encouraging words or even
actual help from fellow sufferers with progress on coding. AFAIK the
design (the most difficult part) is already done (yay!).

Before anyone asks, no, I don't use a mac :)

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