40 columns                              |
>>> indented line comment (dartbug.com/16383)
var list = [
  // comment
];
<<<
var list = [
  // comment
];
>>> line comment on opening line
var list = [ // comment
];
<<<
var list = [
  // comment
];
>>> indented block comment
var list = [
  /* comment */
];
<<<
var list = [
  /* comment */
];
>>> block comment with trailing newline
var list = [/* comment */
];
<<<
var list = [
  /* comment */
];
>>> block comment with leading newline
var list = [
  /* comment */];
<<<
var list = [
  /* comment */
];
>>> inline block comment
var list = [  /* comment */  ];
<<<
var list = [/* comment */];
>>> multiple comments on opening line
var list = [ /* first */ // second
];
<<<
var list = [
  /* first */ // second
];
>>> multiple inline block comments
var list = [  /* 1 */   /* 2 */   /* 3 */  ];
<<<
var list = [/* 1 */ /* 2 */ /* 3 */];
>>> multiline trailing block comment
var list = [  /* comment
*/  ];
<<<
var list = [
  /* comment
*/
];
>>> line comment between items
var list = ['a', // comment
  'b'];
<<<
var list = [
  'a', // comment
  'b'
];
>>> line comments after last item
var list = ['a' // 1
  // 2
];
<<<
var list = [
  'a' // 1
  // 2
];
>>> line comments after trailing comma
var list = ['a', // 1
  // 2
];
<<<
var list = [
  'a', // 1
  // 2
];
>>> space on left between block comment and ","
var list = [1,/* a */ 2 /* b */  , 3];
<<<
var list = [1, /* a */ 2 /* b */, 3];
>>> remove blank line before beginning of body
var list = [


  // comment
];
<<<
var list = [
  // comment
];