Proposal: --fix-unquoted doing line at a time repair

[tef]

Unquoted handling:

For Inside {}'s, or []'s only identifier like keys or values. There isn't a good way to handle unquoted values inside of these, because of examples like 'a: 1, b: 2'

For maps, we have to pick and choose between nesting and error handling.

• Scan the line for ':' followed by a space or a newline.

• Error out if line/word starts with YAML controls ``@%!"'

• if the line ends in a :, and does not contain "'s or spaces, then it is a bare key, and the next line must be indented further in, and be the start of an indented list, or new indented map)

• If the line has one ': ', then split it into key, value. Key must not have spaces.

• If value starts with a {, [, ',", or -+0123456789, parse as normal

• Or take entire line, trimming whitespace at end and front, as value

For indented lists we can do the same, handling a value in the same way as a map,

• search for a {, [, ',", or -+0123456789 and parse as normal.
• Or take entire line, trimming whitespace at end and front, as value

Note: Because of negative numbers, nesting lists complicate nesting

However, a - name: foo can work.