patch 8.2.3166: Vim9: nested autoload call error overruled by "Unknown error" Commit: https://github.com/vim/vim/commit/b5841b99e678da187b68c21f46d56a608a0dc10c Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jul 15 18:09:53 2021 +0200 patch 8.2.3166: Vim9: nested autoload call error overruled by "Unknown error" Problem: Vim9: nested autoload call error overruled by "Unknown error". Solution: Check need_rethrow before giving an "Unknown error". (closes #8568)

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