test/tall/expression/set_preserve_newlines.stmt

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### Tests for how a line comment in a set literal causes newlines to be kept.
>>> Preserve newlines if set contains a line comment.
var set = {
  // yeah
  a,b,c,d,
  e,f,g,h
};
<<<
var set = {
  // yeah
  a, b, c, d,
  e, f, g, h,
};
>>> Don't preserve newlines if line comment is inside an element.
var set = {
  1, 2, 3,
  f(
    arg // c
  ),
};
<<<
var set = {
  1,
  2,
  3,
  f(
    arg, // c
  ),
};
>>> Wrap between elements when newlines are preserved if they don't fit.
var set = {
  element1, element2, element3, element4, element5,

  element6, element7,

  // comment
  element8, element9, element10, element11,
};
<<<
var set = {
  element1,
  element2,
  element3,
  element4,
  element5,

  element6, element7,

  // comment
  element8,
  element9,
  element10,
  element11,
};