more than one `--grep=<pattern>`, commits whose message
matches any of the given patterns are chosen (but see
`--all-match`).
+ifndef::git-rev-list[]
+
When `--show-notes` is in effect, the message from the notes is
matched as if it were part of the log message.
+endif::git-rev-list[]
--all-match::
Limit the commits output to ones that match all given `--grep`,