config: read system-wide defaults from /etc/gitconfig

diff --git a/Documentation/git-diff-files.txt b/Documentation/git-diff-files.txt
index b45d1e69da30cae6fad7eec3694c1768774519b8..7248b35d952c3fe97496895059af35300694eb98 100644 (file)
--- a/Documentation/git-diff-files.txt
+++ b/Documentation/git-diff-files.txt
@@ -8,7 +8,7 @@ git-diff-files - Compares files in the working tree and the index
 
 SYNOPSIS
 --------
-'git-diff-files' [-q] [<common diff options>] [<path>...]
+'git-diff-files' [-q] [-0|-1|-2|-3|-c|--cc] [<common diff options>] [<path>...]
 
 DESCRIPTION
 -----------
@@ -26,13 +26,18 @@ include::diff-options.txt[]
        branch" respectively.  With these options, diffs for
        merged entries are not shown.
 +
-The default is to diff against our branch (-2) if there
-is an unmerged path, and show diff for unmerged entries
-otherwise.  The option -0 can be given to force diff for
-unmerged entries even when the index is unmerged.
+The default is to diff against our branch (-2) and the 
+cleanly resolved paths.  The option -0 can be given to
+omit diff output for unmerged entries and just show "Unmerged".
+
+-c,--cc::
+       This compares stage 2 (our branch), stage 3 (their
+       branch) and the working tree file and outputs a combined
+       diff, similar to the way 'diff-tree' shows a merge
+       commit with these flags.
 
 -q::
-       Remain silent even on nonexisting files
+       Remain silent even on nonexistent files
 
 Output format
 -------------