Re: Honor extractor's umask in git-tar-tree.

Junio C Hamano wrote:

For in-cache permission mode bits, we would probably need
something like this:

  * git-update-index will pick up the filesystem bits with the
    current semantics (i.e. look only at (mode & 0100) and
    force 0644 or 0755) by default; --full-perm-bits option
    would bypass this bits munging.

    Once a file is added with --full-perm-bits, it might be
    nice if index file remembers to pick up the full bits next
    time git-update-index is run on the path.  This could be
    achieved by saying that anything stored in the cache with
    non 100644, 100755 nor 120000 bits are such paths without
    having to change the index file format.

One could also say that since oddball permissions are an exception, not 
the rule, that one should use a "git-chmod" command to enter the 
permissions in the cache.  The correct answer is probably *both* that 
and --full-permissions (or whatever) since they both probably apply to 
different workflows.

	-hpa