commit https://github.com/vim/vim/commit/22e421549d54147d003f6444de007cb1d73f1d27 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 3 14:02:02 2016 +0200 patch 7.4.1700 Problem: Equivalence classes are not properly tested. Solution: Add tests for multi-byte and latin1. Fix an error. (Owen Leibman)

" A series of tests that can run in one Vim invocation.
" This makes testing go faster, since Vim doesn't need to restart.

" These tests use utf8 'encoding'.  Setting 'encoding' is in the individual
" files, so that they can be run by themselves.

source test_regexp_utf8.vim