X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=Documentation%2Fgit-commit-tree.txt;fp=Documentation%2Fgit-commit-tree.txt;h=a0b5457304008cec1cf728e5ac168c5f547173eb;hb=2b594bf90d84fd96f2b1fe904c1e62e391ceb4a0;hp=f5f2a8d326502714299cf85d9819bb065d5af390;hpb=318ca61531d3189aef7b32a924518db1dd9f3374;p=thirdparty%2Fgit.git

diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index f5f2a8d326..a0b5457304 100644
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -56,7 +56,9 @@ OPTIONS
 
 -S[<keyid>]::
 --gpg-sign[=<keyid>]::
-	GPG-sign commit.
+	GPG-sign commits. The `keyid` argument is optional and
+	defaults to the committer identity; if specified, it must be
+	stuck to the option without a space.
 
 --no-gpg-sign::
 	Countermand `commit.gpgSign` configuration variable that is