Add `split()` overloads to `String` and `java.util.regex.Pattern` that, in addition to the substrings returned by current `split()` variants, also return the delimiters matching the regular expression.
------------- Commit messages: - 8305486: Add split() variants that keep the delimiters to String and j.u.r.Pattern Changes: https://git.openjdk.org/jdk/pull/13305/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13305&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8305486 Stats: 384 lines in 3 files changed: 260 ins; 40 del; 84 mod Patch: https://git.openjdk.org/jdk/pull/13305.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13305/head:pull/13305 PR: https://git.openjdk.org/jdk/pull/13305
