From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dmitry Potapov <dpotapov@gmail.com>
Subject: Re: ignoring file modes completely
Date: Sun, 6 Feb 2011 21:10:37 +0300
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On Sun, Feb 06, 2011 at 11:14:30AM -0500, Rafael Kitover wrote:
> $ git diff HEAD
> diff --git a/README b/README
> old mode 100644
> new mode 100755
> $ git config --global core.filemode
> false

This is because core.filemode is set in the local configuration:
$ git config core.filemode
true

Git automatically detects if chmod(2) is supported on the current file
system and sets core.filemode to the corresponding value. Because cygwin
emulates chmod(), git sets core.filemode to true.

Dmitry