Re: bug report: symbolic-ref --short command echos the wrong text while use Chinese language

From: Eric Sunshine <sunshine@sunshineco.com>
Date: Feb 13, 2023, 22:58 UTC
Message-ID: <CAPig+cQ9f0aW0TcP9A5WrKmYcQsEZvPOiPrgmzsy1frWkHd34w@mail.gmail.com>
In-Reply-To: <Y+qbFN+PhHVuWT2T@coredump.intra.peff.net>

On Mon, Feb 13, 2023 at 3:49 PM Jeff King <peff@peff.net> wrote:

Show 18 quoted lines

> On Mon, Feb 13, 2023 at 02:38:08PM +0800, 孟子易 wrote:
> > System: Mac Os (Ventura 13.2)
> > Language: Chinese simplified
> > Preconditions:
> > # git checkout -b 测试-加-增加-加-增加
> > # git symbolic-ref --short HEAD
> > Wrong Echo (Current Echo):
> > 测试-�
> > Correct Echo:
> > // I Don't know, may be "测试-加" ?
>
> Hmm, I can't reproduce here on Linux:
>
>   $ git init
>   $ git commit --allow-empty -m foo
>   $ git checkout -b 测试-加-增加-加-增加
>   $ git symbolic-ref --short HEAD
>   测试-加-增加-加-增加

I am able to reproduce the broken behavior on maOS 10.13.

Show 10 quoted lines

> I wonder if it is related to using macOS. The refs are stored as
> individual files in the filesystem, and HFS+ will do some unicode
> normalization. So I get:
>
>   $ ls .git/refs/heads/ | xxd
>   00000000: 6d61 696e 0ae6 b58b e8af 952d e58a a02d  main.......-...-
>   00000010: e5a2 9ee5 8aa0 2de5 8aa0 2de5 a29e e58a  ......-...-.....
>   00000020: a00a
>
> Are your on-disk bytes different?

I get the exact same results (on HFS+) as you show:

  $ ls .git/refs/heads/ | xxd
  00000000: 6d61 696e 0ae6 b58b e8af 952d e58a a02d  main.......-...-
  00000010: e5a2 9ee5 8aa0 2de5 8aa0 2de5 a29e e58a  ......-...-.....
  00000020: a00a                                     ..