commit https://github.com/vim/vim/commit/d42119fff228434fe57e88d501c744de0a9fb1b1 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 28 20:51:49 2016 +0100 patch 7.4.1457 Problem: Opening a channel with select() is not done properly. Solution: Also used read-fds. Use getsockopt() to check for errors. (Ozaki Kiichi)

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