"Expected NaN spaces" indent error with multiline string and arguments: 'off'

[alangpierce]

Tell us about your environment

• ESLint Version: 4.4.0
• Node Version: 6.10.3
• npm Version: 3.10.10

What parser (default, Babel-ESLint, etc.) are you using? default

Please show your full configuration:

Configuration

module.exports = {
  env: {
    es6: true,
  },
  rules: {
    indent: ['error', 2, {
      CallExpression: {
        arguments: 'off',
      },
    }],
  },
};

What did you do? Please include the actual source code causing the issue.

This is a reduced test case showing the issue:

a(`b
c`, function() {
  d;
});

What did you expect to happen?

Ideally no error, but if there is an error, it should be sensible.

What actually happened? Please include the actual, raw output from ESLint.
eslint gives this error:

3:1  error  Expected indentation of NaN spaces but found 2  indent

Running eslint --fix treats NaN as 0 and removes all indentation from all affected lines.

Changing the multiline string to a single-line string fixes the issue, and removing arguments: 'off' in the config also fixes the issue.

Context:
This type of code came up when converting multiline strings from CoffeeScript (example), and it appears a number of times in my codebase. A workaround is to rewrite the multiline strings as single-line strings, but certainly would be nice for this to be fixed within eslint.

[platinumazure]

This certainly does seem like a bug.

@not-an-aardvark Maybe you might have some insight into this one?

[alangpierce]

Another example with the same config:

a(
  new B({
    c,
  })
);

Gives this error:

  3:1  error  Expected indentation of NaN spaces but found 4  indent
  4:1  error  Expected indentation of NaN spaces but found 2  indent

Edit: another case, even simpler:

a(b
  , c);

Error:

  2:1  error  Expected indentation of NaN spaces but found 2  indent