Check for IO errors after running a command

diff --git a/Documentation/git-diff.txt b/Documentation/git-diff.txt
index 10fdf88dce296f9fd7aea849b974cfbe709fa1b4..639b969315d4c9c6ece95cdeb10c2f92bd17adab 100644 (file)
--- a/Documentation/git-diff.txt
+++ b/Documentation/git-diff.txt
@@ -8,7 +8,7 @@ git-diff - Show changes between commits, commit and working tree, etc
 
 SYNOPSIS
 --------
-'git-diff' [ --diff-options ] <tree-ish>{0,2} [--] [<path>...]
+'git-diff' [<common diff options>] <commit>{0,2} [--] [<path>...]
 
 DESCRIPTION
 -----------
@@ -23,10 +23,14 @@ tree and the index file, or the index file and the working tree.
        further add to the index but you still haven't.  You can
        stage these changes by using gitlink:git-add[1].
 
+       If exactly two paths are given, and at least one is untracked,
+       compare the two files / directories. This behavior can be
+       forced by --no-index.
+
 'git-diff' [--options] --cached [<commit>] [--] [<path>...]::
 
        This form is to view the changes you staged for the next
-       commit relative to the named <tree-ish>.  Typically you
+       commit relative to the named <commit>.  Typically you
        would want comparison with the latest commit, so if you
        do not give <commit>, it defaults to HEAD.
 
@@ -47,6 +51,9 @@ Just in case if you are doing something exotic, it should be
 noted that all of the <commit> in the above description can be
 any <tree-ish>.
 
+For a more complete list of ways to spell <commit>, see
+"SPECIFYING REVISIONS" section in gitlink:git-rev-parse[1].
+
 
 OPTIONS
 -------
@@ -131,4 +138,3 @@ Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
 GIT
 ---
 Part of the gitlink:git[7] suite
-