set, as returned by "git var -l".
--in-reply-to=<identifier>::
- Specify the contents of the first In-Reply-To header.
- Subsequent emails will refer to the previous email
- instead of this if --chain-reply-to is set.
- Only necessary if --compose is also set. If --compose
- is not set, this will be prompted for.
+ 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.
+ The second and subsequent emails will be sent as replies according to
+ the `--[no]-chain-reply-to` setting.
++
+So for example when `--thread` and `--no-chain-reply-to` are specified, the
+second and subsequent patches will be replies to the first one like in the
+illustration below where `[PATCH v2 0/3]` is in reply to `[PATCH 0/2]`:
++
+ [PATCH 0/2] Here is what I did...
+ [PATCH 1/2] Clean up and tests
+ [PATCH 2/2] Implementation
+ [PATCH v2 0/3] Here is a reroll
+ [PATCH v2 1/3] Clean up
+ [PATCH v2 2/3] New tests
+ [PATCH v2 3/3] Implementation
++
+Only necessary if --compose is also set. If --compose
+is not set, this will be prompted for.
--subject=<string>::
Specify the initial subject of the email thread.