patch 8.2.2760: Vim9: no error for changing a for loop variable Commit: https://github.com/vim/vim/commit/f6a8d420a8d2924737f713de046947dcb487550c Author: Bram Moolenaar <Bram@vim.org> Date: Tue Apr 13 21:48:03 2021 +0200 patch 8.2.2760: Vim9: no error for changing a for loop variable Problem: Vim9: no error for changing a for loop variable. Solution: Make the loop variable read-only. (issue https://github.com/vim/vim/issues/8102)

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