Feature: expand string functions and utf-8 string functions

Feature: expand string functions and utf-8 string functions

The need for this was realized while developing this trim parameter feature.
This has been added as is for commit isolation and may be incomplete.

This utilizes private functions to reduce duplicate code.
While the use of private functions is generally unwanted in this project, this specific case seems to be an exception.

Add rip functions.
Add non-dynamic equivalent of some string functions.
Add trim functions.