commit https://github.com/vim/vim/commit/d3c907b5d2b352482b580a0cf687cbbea4c19ea1 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 17 21:32:09 2016 +0200 patch 7.4.2223 Problem: Buffer overflow when using latin1 character with feedkeys(). Solution: Check for an illegal character. Add a test.

1 a aa abb abbcc
2 d dd dee deeff
3 g gg ghh ghhii
4 j jj jkk jkkll
5 m mm mnn mnnoo
6 x aa$ x
7 (a)(b) abba
8 axx ab]xx
9 foobar
9 foo