Git does not really "store the contents of the next commit"
anywhere; rather, you the user use the index to prepare it.
Signed-off-by: Julia Evans <julia@jvns.ca>
[jc; made the change relative to what is already in 'next']
Signed-off-by: Junio C Hamano <gitster@pobox.com>
DESCRIPTION
-----------
Add contents of new or changed files to the index. The "index" (also
-known as "staging area") is where Git stores the contents of the next
-commit.
+known as the "staging area") is what you use to prepare the contents of
+the next commit.
When you run `git commit` without any other arguments, it will only
commit staged changes. For example, if you've edited `file.c` and want