The default for format-patch is to output a signature containing
	the Git version number. Use this variable to change that default.
	Set this variable to the empty string ("") to suppress
	signature generation.

format.signatureFile::
	Works just like format.signature except the contents of the
	file specified by this variable will be used as the signature.

format.suffix::
	The default for format-patch is to output files with the suffix
	`.patch`. Use this variable to change that suffix (make sure to
	include the dot if you want it).

format.encodeEmailHeaders::
	Encode email headers that have non-ASCII characters with
	"Q-encoding" (described in RFC 2047) for email transmission.
	Defaults to true.

format.pretty::
	The default pretty format for log/show/whatchanged command.
	See linkgit:git-log[1], linkgit:git-show[1],
	linkgit:git-whatchanged[1].

format.thread::
	The default threading style for 'git format-patch'.  Can be
	a boolean value, or `shallow` or `deep`.  `shallow` threading
	makes every mail a reply to the head of the series,
	where the head is chosen from the cover letter, the
	`--in-reply-to`, and the first patch mail, in this order.
	`deep` threading makes every mail a reply to the previous one.
	A true boolean value is the same as `shallow`, and a false
	value disables threading.

format.signOff::
	A boolean value which lets you enable the `-s/--signoff` option of
	format-patch by default. *Note:* Adding the `Signed-off-by` trailer to a
	patch should be a conscious act and means that you certify you have
	the rights to submit this work under the same open source license.
	Please see the 'SubmittingPatches' document for further discussion.

format.coverLetter::
	A boolean that controls whether to generate a cover-letter when
	format-patch is invoked, but in addition can be set to "auto", to
	generate a cover-letter only when there's more than one patch.
	Default is false.

format.outputDirectory::
	Set a custom directory to store the resulting files instead of the