commit https://github.com/vim/vim/commit/9532fe7fbe1b14531931e83bd9f8054efdcf7509 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 29 22:50:35 2016 +0200 patch 7.4.2121 Problem: No easy way to check if lambda and closure are supported. Solution: Add the +lambda feature.

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