Name
escape_string — convert a string into escaped characters.
Synopsis
::rivet::escape_string  ?string?
Description
		    Scans through each character in the specified string looking
		    for special characters, escaping them as needed, mapping
		    special characters to a quoted hexadecimal equivalent,
		    returning the result.
		
		    This is useful for quoting strings that are going to be
		    part of a URL.