{
  "options": [
    {
      "name": "-a",
      "tip": [
        "U: -a <FILENUM>\n",
        "also print unpairable lines from file FILENUM, where FILENUM is 1 or 2, corresponding to FILE1 or FILE2\n",
        "[possible values: 1, 2]"
      ],
      "next": [
        {
          "name": "1"
        },
        {
          "name": "2"
        }
      ]
    },
    {
      "name": "-v",
      "tip": [
        "U: -v <FILENUM>\n",
        "like -a FILENUM, but suppress joined output lines\n",
        "[possible values: 1, 2]"
      ],
      "next": [
        {
          "name": "1"
        },
        {
          "name": "2"
        }
      ]
    },
    {
      "name": "-e",
      "next": 0,
      "tip": [
        "U: -e <EMPTY>\n",
        "replace missing input fields with EMPTY"
      ]
    },
    {
      "name": "-i",
      "alias": [
        "--ignore-case"
      ],
      "tip": [
        "ignore differences in case when comparing fields"
      ]
    },
    {
      "name": "-j",
      "next": 0,
      "tip": [
        "U: -j <FIELD>\n",
        "equivalent to '-1 FIELD -2 FIELD'"
      ]
    },
    {
      "name": "-o",
      "next": 0,
      "tip": [
        "U: -o <FORMAT>\n",
        "obey FORMAT while constructing output line"
      ]
    },
    {
      "name": "-t",
      "next": 0,
      "tip": [
        "U: -t <CHAR>\n",
        "use CHAR as input and output field separator"
      ]
    },
    {
      "name": "-1",
      "next": 0,
      "tip": [
        "U: -1 <FIELD>\n",
        "join on this FIELD of file 1"
      ]
    },
    {
      "name": "-2",
      "next": 0,
      "tip": [
        "U: -2 <FIELD>\n",
        "join on this FIELD of file 2"
      ]
    },
    {
      "name": "--check-order",
      "tip": [
        "check that the input is correctly sorted, even if all input lines are pairable"
      ]
    },
    {
      "name": "--nocheck-order",
      "tip": [
        "do not check that the input is correctly sorted"
      ]
    },
    {
      "name": "--header",
      "tip": [
        "treat the first line in each file as field headers, print them without trying to pair them"
      ]
    },
    {
      "name": "-z",
      "alias": [
        "--zero-terminated"
      ],
      "tip": [
        "line delimiter is NUL, not newline"
      ]
    },
    {
      "name": "--version",
      "alias": [
        "-V"
      ],
      "tip": [
        "显示版本信息。"
      ]
    }
  ],
  "common_options": [
    {
      "name": "--help",
      "alias": [
        "-h"
      ],
      "tip": [
        "显示帮助信息。"
      ]
    }
  ],
  "info": {
    "completion_info": {
      "url": "https://github.com/uutils/coreutils",
      "description": [
        "For each pair of input lines with identical join fields, write a line to standard output.\n",
        "The default join field is the first, delimited by blanks.\n",
        "Completion was written based on [uutils/coreutils](https://github.com/uutils/coreutils)."
      ]
    }
  }
}