#group expression/list

#golden list format into singleline should not keep spacing
foo =
  [ 1
  , 2
  , 3
  , 4
  , 5
  ]
#expected
foo = [1, 2, 3, 4, 5]

#golden singleline list with comment
foo = [1 {- a -}, {- b -} 2, {- c -} 3, 4, 5]
#expected
foo =
  [ 1 {- a -}
  , {- b -} 2
  , {- c -} 3
  , 4
  , 5
  ]

#test set-base-y for multiple line elements
foo =
  [ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  , bbbbbbbbbbbbbbbbbb
    $ cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
  ]