stri_split_regex,
stri_split_fixed, stri_split_coll,
or stri_split_charclass,
depending on the argument used.Unless you are a very lazy person, please call the underlying functions directly for better performance.
stri_split(str, ..., regex, fixed, coll, charclass)stri_split_boundaries;
  stri_split_charclass;
  stri_split_coll;
  stri_split_fixed;
  stri_split_lines,
  stri_split_lines1,
  stri_split_lines1;
  stri_split_regex;
  stringi-search