Re: [PATCH V4] git on Mac OS and precomposed unicode

From: Carlos Martín Nieto <cmn@elego.de>
Date: Jan 21, 2012, 22:28 UTC
Message-ID: <1327184934.31804.32.camel@centaur.lab.cmartin.tk>
In-Reply-To: <201201212036.57632.tboegi@web.de>

On Sat, 2012-01-21 at 20:36 +0100, Torsten Bögershausen wrote:

Show 19 quoted lines

> Allow git on Mac OS to store file names in the index in precomposed unicode,
> while the file system uses decomposed unicode.
> 
> The problem:
> When a file called "LATIN CAPITAL LETTER A WITH DIAERESIS"
> (in utf-8 encoded as 0xc3 0x84) is created, the Mac OS filesystem
> converts "precomposed unicode" into "decomposed unicode".
> This means that readdir() will return 0x41 0xcc 0x88.
> 
> Git under Mac OS reverts the unicode decomposition of filenames.
> 
> This is useful when pulling/pushing from repositories containing utf-8
> encoded filenames using precomposed utf-8 like Linux or Windows (*).
> 
> It allows sharing git repositories stored on a VFAT file system
> (e.g. a USB stick), and mounted network share using samba.
> 
> * (Not all Windows versions support UTF-8 yet:
>    Msysgit needs the unicode branch, cygwin supports UTF-8 since 1.7)

This might be overly pedantic, but Windows doesn't really deal with UTF-8. To use Unicode you need to use the "wide" variant of the functions, and those take UTF-16.

cmn