commit https://github.com/vim/vim/commit/11fbc2866ccc11b4dd1726abdaf582a78ef3f743 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Sep 2 21:48:32 2016 +0200 patch 7.4.2309 Problem: Crash when doing tabnext in a BufUnload autocmd. (Dominique Pelle) Solution: When detecting that the tab page changed, don't just abort but delete the window where w_buffer is NULL.

README_src.txt for version 7.4 of Vim: Vi IMproved.

The source archive contains the files needed to compile Vim on Unix systems.
It is packed for Unix systems (NL line separator).

For more information, see the README.txt file that comes with the runtime
archive (vim-7.4-rt.tar.gz).  To be able to run Vim you MUST get the runtime
archive too!