Converts any delimiter characters in string to new_delimiter.
Any characters in string which are found in delimiters are
changed to the new_delimiter character. Modifies string in place,
and returns string itself, not a copy. The return value is to
allow nesting such as
Converts any delimiter characters in string to new_delimiter. Any characters in string which are found in delimiters are changed to the new_delimiter character. Modifies string in place, and returns string itself, not a copy. The return value is to allow nesting such as