commit https://github.com/vim/vim/commit/19ff9bf454b7492be64dd87aaf0830fa7961871e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jul 10 19:03:57 2016 +0200 patch 7.4.2021 Problem: Still too many buf_valid() calls. Solution: Make au_new_curbuf a bufref. Use bufref_valid() in more places.

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