commit https://github.com/vim/vim/commit/472472898ab71ac80a86fedc37f8eb91461788dd Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 2 22:36:02 2016 +0200 patch 7.4.2146 Problem: Not enough testing for popup menu. CTRL-E does not always work properly. Solution: Add more tests. When using CTRL-E check if the popup menu is visible. (Christian Brabandt)

" 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 latin1 'encoding'.  Setting 'encoding' is in the individual
" files, so that they can be run by themselves.

source test_regexp_latin.vim