[PATCH 2/3] Doc: add more detail for git-format-patch

[Denton Liu <liu.denton@gmail.com>]

In git-format-patch.txt, we were missing some key user information.
First of all, using the `--to` and `--cc` options don't override
`format.to` and `format.cc` variables, respectively. They add on to each
other. Document this.

In addition, document the special value of `--base=auto`.

Next, while we're at it, surround option arguments with <>.

Finally, document the `format.outputDirectory` config and change
`format.coverletter` to use camelcase.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 Documentation/git-format-patch.txt | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index b9b97e63ae..0e2dd59c0f 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -17,9 +17,9 @@ SYNOPSIS
 		   [--signature-file=<file>]
 		   [-n | --numbered | -N | --no-numbered]
 		   [--start-number <n>] [--numbered-files]
-		   [--in-reply-to=Message-Id] [--suffix=.<sfx>]
+		   [--in-reply-to=<Message-Id>] [--suffix=.<sfx>]
 		   [--ignore-if-in-upstream]
-		   [--rfc] [--subject-prefix=Subject-Prefix]
+		   [--rfc] [--subject-prefix=<Subject-Prefix>]
 		   [(--reroll-count|-v) <n>]
 		   [--to=<email>] [--cc=<email>]
 		   [--[no-]cover-letter] [--quiet]
@@ -159,7 +159,7 @@ Beware that the default for 'git send-email' is to thread emails
 itself.  If you want `git format-patch` to take care of threading, you
 will want to ensure that threading is disabled for `git send-email`.
 
---in-reply-to=Message-Id::
+--in-reply-to=<Message-Id>::
 	Make the first mail (or all the mails with `--no-thread`) appear as a
 	reply to the given Message-Id, which avoids breaking threads to
 	provide a new patch series.
@@ -193,13 +193,17 @@ 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.
+	to any configured headers, and may be used multiple times. The
+	emails given will be used along with any emails given by
+	`format.to` configurations.
 	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.
+	to any configured headers, and may be used multiple times. The
+	emails given will be used along with any emails given by
+	`format.cc` configurations.
 	The negated form `--no-cc` discards all `Cc:` headers added so
 	far (from config or command line).
 
@@ -314,7 +318,8 @@ you can use `--suffix=-patch` to get `0001-description-of-my-change-patch`.
 --base=<commit>::
 	Record the base tree information to identify the state the
 	patch series applies to.  See the BASE TREE INFORMATION section
-	below for details.
+	below for details. If <commit> is equal to "auto", a base commit
+	is automatically chosen.
 
 --root::
 	Treat the revision argument as a <revision range>, even if it
@@ -330,8 +335,9 @@ CONFIGURATION
 -------------
 You can specify extra mail header lines to be added to each message,
 defaults for the subject prefix and file suffix, number patches when
-outputting more than one patch, add "To" or "Cc:" headers, configure
-attachments, and sign off patches with configuration variables.
+outputting more than one patch, add "To:" or "Cc:" headers, configure
+attachments, change the patch output directory, and sign off patches
+with configuration variables.
 
 ------------
 [format]
@@ -343,7 +349,8 @@ attachments, and sign off patches with configuration variables.
 	cc = <email>
 	attach [ = mime-boundary-string ]
 	signOff = true
-	coverletter = auto
+	outputDirectory = <directory>
+	coverLetter = auto
 ------------
 
 
-- 
2.23.0.248.g3a9dd8fb08