Liquid if/unless タグのフォーマット仕様

It should not break singular expressions, but we break children
printWidth: 1
{% if x %}
  hello
{% endif %}
{% if 'string' %}
  hello
{% endif %}
{% if null %}
  hello
{% endif %}

It should break before logical operators
printWidth: 1
{% if conditionA
  and var.key
  and true
%}
  hello
{% endif %}

It should break before comparators (and indent)
printWidth: 1
{% if lower
    < some.variable
  and some.variable
    < upper
%}
  hello
{% endif %}

It should try to keep comparators on same line
printWidth: 30
{% if lower < some.variable
  and some.variable < upper
%}
  hello
{% endif %}

It should support all kinds of shit
printWidth: 30
{% if lower < some.variable
  and some.variable < upper
  and string contains 'hi'
  or string == empty
  or null
  or var.lookup
%}
  hello
{% endif %}

It should support all kinds of shit (same but for unless)
printWidth: 30
{% unless lower
    < some.variable
  and some.variable < upper
  and string contains 'hi'
  or string == empty
  or null
  or var.lookup
%}
  hello
{% endunless %}

It should be idempotent
{% if variable >= 1 %} {% endif %}

It should not maintain leading whitespace in default branch
{% if true %}
  hello
{% endif %}

It should maintain at most 1 new line between the default branch and the next
{% if true %}
  hello

{% else %}
  world
{% endif %}

It should maintain at most 1 new line between the branches
{% if true %}
  hello

{% elsif true %}
  world

{% else %}
  world
{% endif %}

It should not maintain trailing newlines between last branch and parent node
{% if true %}
  hello

{% elsif true %}
  world

{% else %}
  world
{% endif %}