-The output format from "git-diff-index", "git-diff-tree",
+Raw output format
+-----------------
+
+The raw output format from "git-diff-index", "git-diff-tree",
"git-diff-files" and "git diff --raw" are very similar.
These commands all compare two sets of things; what is
git-diff-files [<pattern>...]::
compares the index and the files on the filesystem.
+The "git-diff-tree" command begins its output by printing the hash of
+what is being compared. After that, all the commands print one output
+line per changed file.
An output line is formatted this way: