Re: Git files data formats documentation

Junio C Hamano wrote:
...

quoted

<OCTAL_MODE>
	# Octal encoding, without prefix, of the file system object
	# type and permission bits. The bit layout is according to the
	# POSIX standard, with only regular files, directories, and
	# symbolic links permitted. The actual permission bits are
	# all zero except for regular files. The only permission bit
	# of any consequence to Git is the owner executable bit. By
	# default, the permission bits for files will be either 0644
	# or 0755, depending on the owner executable bit.
	;

It's not really "by default" -- more like "by definition", since
there is no way for the program to use something different.  We
used to record non-canonical modes in ancient versions of git,
but I think fsck-objects would warn on objects created that way.

See git-mktree.