example, if your project uses `Reviewed-by` trailers, you might want
to see who has been reviewing with
`git shortlog -ns --group=trailer:reviewed-by`.
- - `format:<format>`, any string accepted by the `--format` option of
- 'git log'. (See the "PRETTY FORMATS" section of
- linkgit:git-log[1].)
+
Note that commits that do not include the trailer will not be counted.
Likewise, commits with multiple trailers (e.g., multiple signoffs) may
identity. If successful, the mailmap is applied and the email is omitted
unless the `--email` option is specified. If the value cannot be parsed
as an identity, it will be taken literally and completely.
+
+ - `format:<format>`, any string accepted by the `--format` option of
+ 'git log'. (See the "PRETTY FORMATS" section of
+ linkgit:git-log[1].)
--
+
If `--group` is specified multiple times, commits are counted under each