du and exclution of directories.

[Robert Lindgren]

From what I understand it's not possible to exclude a directory path 
with the du command, this would be very nice to have.

mkdir -p 1/1 2/2 3/3
echo "count me" > 1/1/file1
echo "count me" > 2/2/file2
echo "exclude me" > 3/3/file3

du
4       ./1/1
4       ./1
4       ./2/2
4       ./2
4       ./3/3
4       ./3
12      .

Excludes everything names 3.
du --exclude="3"
4       ./1/1
4       ./1
4       ./2/2
4       ./2
8       .

This is what I want to do, just exclude the path 3/3
du --exclude="3/3"
4       ./1/1
4       ./1
4       ./2/2
4       ./2
4       ./3/3
4       ./3
12      .

But it doesn't work with du version 5.2.1. I understand that it's 
probably a correct behavior and not a bug, but in tar it's possible to 
exclude a path and it would be nice if one could du that in du also.

Best regards
Robert Lindgren