To see the diff between the index and the last commit (i.e., collected
patches) use ``git diff --cached``. To see the diff between the
working tree and the index (i.e., uncollected patches) use just ``git
-diff``.
+diff``. To see the diff between the working tree and the last commit
+(i.e., both collected and uncollected patches) use ``git diff HEAD``.
See `WhatIsTheIndex
<https://git.wiki.kernel.org/index.php/WhatIsTheIndex>`_ and