How to use path limiting (using a glob)?

Hallo,

after reading Junio's nice blog today where he explained how to use git grep efficiently, I saw him using a glob to match for the interesting files:

	 $ git grep -e ';;' -- '*.c'

Is it possible to have the same feature in git diff and the revision machinery? Because I tried

	$ cd $path_to_your_git_src_dir
	$ git log master -p -- '*.h'
	.... No commit shown 

	$ git diff --name-only v1.5.0  v1.6.0 -- '*.c'

and both don't return anything.

Grettings, Peter Baumann