commit https://github.com/vim/vim/commit/a890f5e34887bff7616bdb4b9ee0bf98c8d2a8f0 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 12 23:03:19 2016 +0200 patch 7.4.1926 Problem: Possible crash with many history items. Solution: Avoid the index going past the last item.

Tests for complicated + argument to :edit command

STARTTEST
:$-1w! Xfile1
:$w! Xfile2
:edit +1|s/|/PIPE/|w Xfile1| e Xfile2|1 | s/\//SLASH/|w
:w! test.out
:e Xfile1
:w >> test.out
:qa!
ENDTEST

The result should be in Xfile1: "fooPIPEbar", in Xfile2: "fooSLASHbar"
foo|bar
foo/bar