Cheatsheet: Write Multiple Lines Content in YAML

It's crazy that there are NINE different ways to write multi-line strings in YAML.

Here is a simple cheatsheet:

• Use > most of the time: interior line breaks are stripped out, although you get one at the end.
• Use | if you want those linebreaks to be preserved as \n (for instance, embedded markdown with paragraphs).
• Use >- or |- instead if you don't want a linebreak appended at the end.
• Use "blahblah..." if you need to split lines in the middle of words or want to literally type linebreaks as \n

And this is difference betweetn " and ' in YAML:

• Whenever applicable use the unquoted style since it is the most readable.
• Use the single-quoted style (') if characters such as " and \ are being used inside the string to avoid escpaing them and therefore improve readability.
• Use the double-quoted style (") when the first two options aren't sufficient, i.e. in scenarios where more complex line breaks are required or non-printable characters are needed.

Check references for more detailed examples :(

References:

1. YAML Multiline
2. How do I break a string in YAML over multiple lines?
3. YAML: Do I need quotes for strings in YAML?