specialChars :: [Char]
specialChars =
  [ lambda
  , primTag
  , strictTag
  , lambdaSep
  , lparen
  , rparen
  , lbracket
  , rbracket
  , defSep
  , commentStart
  ]
specialChars :: [Char]
specialChars =
  [ lambda
  , primTag
  , strictTag
  , lambdaSep
  , lparen
  , rparen
  , lbracket
  , rbracket
  , defSep
  , commentStart
  ]
specialChars =
  [ lambda
  , primTag
  , strictTag
  , lambdaSep
  , lparen
  , rparen
  , lbracket
  , rbracket
  , defSep
  , commentStart
  ]