[-n] [-l | --files-with-matches] [-L | --files-without-match]
[-c | --count]
[-A <post-context>] [-B <pre-context>] [-C <context>]
- [-f <file>] [-e <pattern>]
+ [-f <file>] [-e] <pattern>
[<tree>...]
[--] [<path>...]
-f <file>::
Read patterns from <file>, one per line.
+-e::
+ The next parameter is the pattern. This option has to be
+ used for patterns starting with - and should be used in
+ scripts passing user input to grep.
+
`<tree>...`::
Search blobs in the trees for specified patterns.