patch 8.0.0537: illegal memory access with :z and large count commit https://github.com/vim/vim/commit/fa0ad0bb0b4255e64ebcf9269d60a942e0ae7ff9 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 2 15:45:17 2017 +0200 patch 8.0.0537: illegal memory access with :z and large count Problem: Illegal memory access with :z and large count. Solution: Check for number overflow, using long instead of int. (Dominique Pelle, closes #1612)

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