user-manual: use pithier example commit

diff --git a/Documentation/git-add.txt b/Documentation/git-add.txt
index 755d7186f5f4a74dc84cc98c67eec0b9c86b6289..a0c9f68580594f785aaec0472ca8404701d4d86d 100644 (file)
--- a/Documentation/git-add.txt
+++ b/Documentation/git-add.txt
@@ -7,7 +7,7 @@ git-add - Add file contents to the changeset to be committed next
 
 SYNOPSIS
 --------
-'git-add' [-n] [-v] [-f] [--interactive | -i] [--] <file>...
+'git-add' [-n] [-v] [-f] [--interactive | -i] [-u] [--] <file>...
 
 DESCRIPTION
 -----------
@@ -56,12 +56,28 @@ OPTIONS
        Add modified contents in the working tree interactively to
        the index.
 
+-u::
+       Update only files that git already knows about. This is similar
+       to what "git commit -a" does in preparation for making a commit,
+       except that the update is limited to paths specified on the
+       command line. If no paths are specified, all tracked files are
+       updated.
+
 \--::
        This option can be used to separate command-line options from
        the list of files, (useful when filenames might be mistaken
        for command-line options).
 
 
+Configuration
+-------------
+
+The optional configuration variable 'core.excludesfile' indicates a path to a
+file containing patterns of file names to exclude from git-add, similar to
+$GIT_DIR/info/exclude.  Patterns in the exclude file are used in addition to
+those in info/exclude.  See link:repository-layout.html[repository layout].
+
+
 EXAMPLES
 --------
 git-add Documentation/\\*.txt::