Re: Unicode composable characters on macOS [was: Subversion 2.0]
From: Thomas Singer <thomas.singer_at_syntevo.com>
Date: Wed, 26 Jun 2019 19:11:51 +0200
Thanks for the detailed explanation. Would you mind to add the
-- Best regards, Thomas Singer ============= syntevo GmbH On 26/06/2019 17:39, Branko Čibej wrote: > On 26.06.2019 10:40, Marc Strapetz wrote: >> On 25.06.2019 23:35, Branko Čibej wrote:> On 25.06.2019 19:15, Thomas >> Singer wrote: >>>> What I don't like: >>>> - after more than a decade the umlaut problem of composed/decomposed >>>> UTF-8 has not been solved >>> >>> It has, actually, in Apple's APFS, where the fix belongs. >> >> That sounds interesting. Just to be sure, you are referring to this >> problem: >> >> https://issues.apache.org/jira/browse/SVN-2464 >> >> ? It would be great to have some more information for which OSX >> version and which file systems the problem should be resolved. > > > The original problem was that Apples HFS+ filesystem normalized paths to > Unicode Normalisation Form D. In practice that meant that if you created > a file with a name that contained a composable character, then read that > name from the filesystem, you could get different results (i.e., the > name was "the same" as far as Unicode normalisation is concerned, but > the actual representation bytes were different). > > The new APFS filesystem (which is the default in the last two versions > of macOS, IIRC) doesn't do that any more. > > This is on local disk, which is APFS: > > brane_at_zulu:~/src/svn/test$ svnadmin create repo > brane_at_zulu:~/src/svn/test$ svn co file://$(pwd)/repo wc > Checked out revision 0. > brane_at_zulu:~/src/svn/test$ touch wc/čibej > brane_at_zulu:~/src/svn/test$ svn add wc/čibej > A wc/čibej > brane_at_zulu:~/src/svn/test$ svn st wc/ > A wc/čibej > > and this is on an HFS+ disk image: > > brane_at_zulu:/Volumes/hfs$ svnadmin create repo > brane_at_zulu:/Volumes/hfs$ svn co file://$(pwd)/repo wc > Checked out revision 0. > brane_at_zulu:/Volumes/hfs$ touch wc/čibej > brane_at_zulu:/Volumes/hfs$ svn add wc/čibej > A wc/čibej > brane_at_zulu:/Volumes/hfs$ svn st wc/ > ? wc/čibej > ! wc/čibej > > The second instance clearly shows that the filesystem changed the file name. > > -- Brane > >Received on 2019-06-26 19:12:09 CEST
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