Document --ignore-if-in-upstream in git-format-patch

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index e7703a5000892c1bede48fc98d7074f49957039e..59f34b9f0d2f4fe74fa5d90bb53393c88d36476b 100644 (file)
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -12,6 +12,7 @@ SYNOPSIS
 'git-format-patch' [-n | -k] [-o <dir> | --stdout] [--attach] [--thread]
                   [-s | --signoff] [--diff-options] [--start-number <n>]
                   [--in-reply-to=Message-Id] [--suffix=.<sfx>]
+                  [--ignore-if-in-upstream]
                   <since>[..<until>]
 
 DESCRIPTION
@@ -80,6 +81,13 @@ OPTIONS
        reply to the given Message-Id, which avoids breaking threads to
        provide a new patch series.
 
+--ignore-if-in-upstream::
+       Do not include a patch that matches a commit in
+       <until>..<since>.  This will examine all patches reachable
+       from <since> but not from <until> and compare them with the
+       patches being generated, and any patch that matches is
+       ignored.
+
 --suffix=.<sfx>::
        Instead of using `.patch` as the suffix for generated
        filenames, use specifed suffix.  A common alternative is