Forbid implicit multiline scalars

[RazrFalcon]

list:
  - value1
  - value2

will be parsed as:

{
    "list": [
        "value1",
        "value2"
    ]
}

But this:

list:
  - value1
   - value2

will be parsed as:

{
    "list": [
        "value1 - value2"
    ]
}

This is very confusing and error-prone. Maybe multiline scalars should be available only inside a Block Scalar?

[crdoconnor]

Definitely up for this in the hardened spec.

On Sat, 2 May 2020, 07:52 Evgeniy Reizner, [email protected] wrote:

list:

• value1
• value2

will be parsed as:

{ "list": [ "value1", "value2" ] }

But this:

list:

• value1
• value2

will be parsed as:

{ "list": [ "value1 - value2" ] }

This is very confusing and error-prone. Maybe multiline scalars should be available only inside a Block Scalar https://yaml.org/spec/1.2/spec.html#Block?

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[julie777]

I think that

list:
  - value1
   - value2

should be a parse error. Value1 should be the first element of the list and then fail with an indentation error.

I guess I am saying that restricting multiline scalars to only work in block starting on a new line would be a reasonable restriction. From the zen of Python "There should be one-- and preferably only one --obvious way to do it."

Getting rid of inline formats also agrees with this.