regexSplit

Slices the input string into substrings separated by the expression and returns a slice of the substrings between those expression matches. The last parameter n determines the number of substrings to return, where -1 means return all matches

regexSplit "z+" "pizza" -1

The above produces [pi a]

regexSplit panics if there is a problem and mustRegexSplit returns an error to the template engine if there is a problem.