Make rpartition compatible with Ruby 2.7#2320

Merged

graalvmbot merged 2 commits intooracle:masterfrom gogainda:fix_rpartition

Apr 15, 2021

+19-7

Commits on Apr 8, 2021

Fix rpartition result when regexp doesn't match
gogainda
committed

Commits on Apr 9, 2021

Fix multibyte handling
gogainda
committed