List Configuration Modifiers
Functions that work on lists should accepts parameters that modify list configuration according to the conditions outline below.
Delimiting Punctuation
The $separator
parameter should be accepted when returning a list.
Enclosing Punctuation
The $bracketed
parameter should be accepted when returning a list...
...and bracket style cannot be singularly determined from the input.
...that is not a subset of a source list and a potential input value.
list.map()
- etc.