[PATCH 4/4] Document negated forms of format-patch --to --cc --add-headers

[Thomas Rast <trast@student.ethz.ch>]

The negated forms introduced in c426003 (format-patch: add --no-cc,
--no-to, and --no-add-headers, 2010-03-07) were not documented
anywhere.  Add them to the descriptions of the positive forms.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
---

I can't help but notice that the options aren't symmetric:
--no-add-header clears more than just the options added by
--add-header.  It's probably too late to change though.


 Documentation/git-format-patch.txt |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index d13c9b2..6ea9be7 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -166,15 +166,22 @@ will want to ensure that threading is disabled for `git send-email`.
 --to=<email>::
 	Add a `To:` header to the email headers. This is in addition
 	to any configured headers, and may be used multiple times.
+	The negated form `--no-to` discards all `To:` headers added so
+	far (from config or command line).
 
 --cc=<email>::
 	Add a `Cc:` header to the email headers. This is in addition
 	to any configured headers, and may be used multiple times.
+	The negated form `--no-cc` discards all `Cc:` headers added so
+	far (from config or command line).
 
 --add-header=<header>::
 	Add an arbitrary header to the email headers.  This is in addition
 	to any configured headers, and may be used multiple times.
-	For example, `--add-header="Organization: git-foo"`
+	For example, `--add-header="Organization: git-foo"`.
+	The negated form `--no-add-header` discards *all* (`To:`,
+	`Cc:`, and custom) headers added so far from config or command
+	line.
 
 --cover-letter::
 	In addition to the patches, generate a cover letter file
-- 
1.7.7.rc0.370.gdcae57