pretty-format-json fails with '--indent' argument

[chriswgerber]

# .pre-commit-config.yaml
...
    -   id: pretty-format-json
        args:
        - --indent 4
        - --autofix
        - --no-sort-keys
...

# Error:

Pretty format JSON.................................................................Failed
hookid: pretty-format-json

usage: pretty-format-json [-h] [--autofix] [--indent INDENT] [--no-sort-keys]
                          [filenames [filenames ...]]
pretty-format-json: error: unrecognized arguments: package.json composer.json

Setting the argument to adjust the indentation level causes the script to break. Formatting of the argument doesn't seem to matter (E.g. '4', "4", 4). The only way to get it to work is to remove the argument.

[chriskuehl]

I think you need the 4 to be another entry in that list.

    -   id: pretty-format-json
        args:
        - --indent
        - 4
        - --autofix
        - --no-sort-keys

We usually avoid this syntax, you might find this easier to read?

    -   id: pretty-format-json
        args: ['--indent', '4', '--autofix', '--no-sort-keys']

[chriswgerber]

Even worse. But...

    -   id: pretty-format-json
        args:
        - --indent
        - '4'
        - --autofix
        - --no-sort-keys

Did work. Thanks for putting me in the right direction.

[asottile]

Yaml strikes again :(

I usually find the list literal easier to think about:

args: ['--indent', '4']

[chriswgerber]

It would be handy to add it to the README. The Indent flag isn't even mentioned.

[asottile]

#138