reader.js
function read_delimited_text(lexer, start, end, options) {
  options = options || {includeDelimiters: true};
  var delimited = lexer.next_delimited_token(start, end, options);
  return sl.atom(delimited);
}
function read_delimited_text(lexer, start, end, options) {
  options = options || {includeDelimiters: true};
  var delimited = lexer.next_delimited_token(start, end, options);
  return sl.atom(delimited);
}
function read_delimited_text ( lexer , start , end , options ) { options = options || { includeDelimiters : true } ; var delimited = lexer . next_delimited_token ( start , end , options ) ; return sl . atom ( delimited ) ; }
scan some delimited text and get it as a string atom
lexer.options.omitDelimiters = whether to include the include the delimiters or not
scan some delimited text and get it as a string atom lexer . options . omitDelimiters = whether to include the include the delimiters or not