40 columns                              |
>>> Empty.
e = switch(y) {};
<<<
e = switch (y) {};
>>> All one line.
e = switch (c) { 0 => a, 1 => b };
<<<
e = switch (c) { 0 => a, 1 => b };
>>> One case per line.
e = switch (c) { 0 => first, 1 => second };
<<<
e = switch (c) {
  0 => first,
  1 => second,
};
>>> Remove trailing comma if cases fit on one line.
e = switch (c) { 0 => a, 1 => b, };
<<<
e = switch (c) { 0 => a, 1 => b };
>>> Split some cases at "=>" but not all.
e = switch (c) {
  first => a,
  second => veryLongExpression + thatSplits,
  third => c
};
<<<
e = switch (c) {
  first => a,
  second =>
    veryLongExpression + thatSplits,
  third => c,
};
>>> Discard newlines between cases.
e = switch (obj) {


  0 => a,


  1 => b,


  2 => c


};
<<<
e = switch (obj) {
  0 => a,
  1 => b,
  2 => c,
};
>>> Don't split at parentheses.
e = switch ("a long string that must wrap") {
  0 => "ok"
};
<<<
e = switch ("a long string that must wrap") {
  0 => "ok",
};
>>> Split in delimited value expression.
e = switch ([veryLongElement,veryLongElement,veryLongElement,]) {
  0 => "ok"
};
<<<
e = switch ([
  veryLongElement,
  veryLongElement,
  veryLongElement,
]) {
  0 => "ok",
};
>>> Split in case expression.
e = switch (obj) {
  1 => veryLongExpression + thatStillMustSplit
};
<<<
e = switch (obj) {
  1 =>
    veryLongExpression +
        thatStillMustSplit,
};
>>> Prefer to split after "=>" instead of body.
e = switch (obj) {
  longConstant => longExpression + thatMustSplit
};
<<<
e = switch (obj) {
  longConstant =>
    longExpression + thatMustSplit,
};
>>> Split after "=>" and in body.
e = switch (obj) {
  longConstant => veryLongLongExpression + thatMustSplit
};
<<<
e = switch (obj) {
  longConstant =>
    veryLongLongExpression +
        thatMustSplit,
};
>>> Expression split in pattern.
e = switch (obj) {
  veryVeryLongPattern && reallyMustSplit => body
};
<<<
e = switch (obj) {
  veryVeryLongPattern &&
      reallyMustSplit =>
    body,
};
>>> Outermost logic-or patterns are indented like parallel cases.
e = switch (obj) {
  oneConstant || twoConstant || threeConstant => body
};
<<<
e = switch (obj) {
  oneConstant ||
  twoConstant ||
  threeConstant =>
    body,
};
>>> Nested logic-or operands are indented.
e = switch (obj) {
  [oneConstant || twoConstant || threeConstant] => body
};
<<<
e = switch (obj) {
  [
    oneConstant ||
        twoConstant ||
        threeConstant,
  ] =>
    body,
};
>>> Block split in pattern.
e = switch (obj) {
  [veryLongElement,veryLongElement,veryLongElement,] => body
};
<<<
e = switch (obj) {
  [
    veryLongElement,
    veryLongElement,
    veryLongElement,
  ] =>
    body,
};
>>> Unsplit pattern with trailing block split body.
e = switch (obj) {
  pattern => function(veryLongElement,veryLongElement,veryLongElement)
};
<<<
e = switch (obj) {
  pattern => function(
    veryLongElement,
    veryLongElement,
    veryLongElement,
  ),
};
>>> Split pattern with block split body.
e = switch (obj) {
  pattern && anotherPattern && aThirdOne => function(veryLongElement,veryLongElement,veryLongElement)
};
<<<
e = switch (obj) {
  pattern &&
      anotherPattern &&
      aThirdOne =>
    function(
      veryLongElement,
      veryLongElement,
      veryLongElement,
    ),
};