prettier/tests/html_glimmer/sub-expressions.hbs

<div
  {{mustache
    (concat
      (helper param hashPair=Value)
      (largeNameHelper param param param param hashPair=value hashPair=value hashPair=Value)
      hashPair=(helper param param param param param param hashPair=value hashPair=value hashPair=value)
      hashPair=(does not need a line break due to being under 80 chars long)
    )
  }}
></div>

{{#block
  (concat
    (helper param hashPair=Value)
    (largeNameHelper param param param param hashPair=value hashPair=value hashPair=Value)
    hashPair=(helper param param param param param param hashPair=value hashPair=value hashPair=value)
    hashPair=(does not need a line break due to being under 80 chars long)
  )
}}

{{/block}}

{{foobar-sub-component/foobar-foo 
  hook="stringLiteral"
  foo=
    (t
      (concat "stringLiteral" (get blockParam "stringLiteral") hash=hash hash=hash)
      foo=(simple-helper (hash hashKey=blockParam.foo assignParam=blockParam.bar))
    )
}}