If `-o` is specified, output files are created in <dir>. Otherwise
they are created in the current working directory. The default path
-can be set with the 'format.outputDirectory' configuration option.
+can be set with the `format.outputDirectory` configuration option.
The `-o` option takes precedence over `format.outputDirectory`.
To store patches in the current working directory even when
`format.outputDirectory` points elsewhere, use `-o .`.
`--in-reply-to`, and the first patch mail, in this order. 'deep'
threading makes every mail a reply to the previous one.
+
-The default is `--no-thread`, unless the 'format.thread' configuration
+The default is `--no-thread`, unless the `format.thread` configuration
is set. If `--thread` is specified without a style, it defaults to the
-style specified by 'format.thread' if any, or else `shallow`.
+style specified by `format.thread` if any, or else `shallow`.
+
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