patch 8.2.2739: Vim9: a lambda accepts too many arguments at the script level Commit: https://github.com/vim/vim/commit/767034c5b82ba8999d9fed2f997436e6e3e99419 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Apr 9 17:24:52 2021 +0200 patch 8.2.2739: Vim9: a lambda accepts too many arguments at the script level Problem: Vim9: a lambda accepts too many arguments at the script level. Solution: Do not set uf_varargs in Vim9 script.

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