Build Regex to find delimited items.
A delimited item maple can appear in a list in four ways
At the start of a list maple; oak
In the middle of a list oak; maple; birch
At the end of a list oak; maple
Alone with no delimiters maple
buildDelimRegex(str, delim)
str |
A string whose presence indicates a selection |
delim |
The delimiter separating the responses |
This function builds a regex expression which captures those four cases It
is mostly broken out of createSubvarDeriv() for testing purposes.
A character string
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.