Liquid タグの空白文字トリム制御

it should not add Whitespace Trim Characters (WTC) if the liquid tag does not
break on a new line
<div>{% echo 'hello' %}</div>

it should not add wtc if the liquid tag breaks on a new line, is not leading
space sensitive and there was no leading space.
<div>
  {% echo 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' %}
</div>

it should add wtc if the liquid tag breaks on a new line and is leading space
sensitive
<span>
  {%- echo 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' -%}
</span>

it should not add wtc if the liquid tag breaks on a new line and the
previous/next characters were spaces
<div>
  {% echo 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' %}
</div>

it should break next to a character, so there should be wtc
<div>
  Hey
  {% echo 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' -%}
  , how are you doing?
</div>

it should add wtc when it adds hardlines in places there wasn't whitespace before
<span>
  {%- render 'icon-error' -%}
  {{- 'blogs.article.email' | t }}
  {{ form.errors.messages.email }}.</span
>