combined diff, but not condensed, howto?

After a merge conflict, 'git diff' shows a combined diff, which presents
only the parts that conflicted or where there are near-by changes from
different parents (potential conflicts). Is there a command line switch so
that *all* changes are shown, even non-conflicting ones?

'git diff', 'git diff --cc', and 'git diff -c' all show the same output.

-- Hannes