git-grep [--cached]
           [-a | --text] [-I] [-i | --ignore-case] [-w | --word-regexp]
           [-v | --invert-match] [-h|-H] [--full-name]
           [-E | --extended-regexp] [-G | --basic-regexp] [-F | --fixed-strings]
           [-n] [-l | --files-with-matches] [-L | --files-without-match]
           [-c | --count] [--all-match]
           [-A <post-context>] [-B <pre-context>] [-C <context>]
           [-f <file>] [-e] <pattern> [--and|--or|--not|(|)|-e <pattern>]
           [<tree>]
           [--] [<path>]