patch 8.2.3423: Vim9: list += list creates a new list in :def function Commit: https://github.com/vim/vim/commit/07802044b90b2cbcc64b2dfe235f019d7c37589c Author: Bram Moolenaar <Bram@vim.org> Date: Thu Sep 9 23:01:14 2021 +0200 patch 8.2.3423: Vim9: list += list creates a new list in :def function Problem: Vim9: list += list creates a new list in :def function. Solution: Append to the existing list.

| +0#0000e05#a8a8a8255@1|x+0#0000000#ffffff0@72
| +0#0000e05#a8a8a8255@1|x+0#0000000#ffffff0@1| @70
|-+0&#ffff4012|)>m+0#0000001#ffd7ff255@3| @68
| +0#0000e05#a8a8a8255@1|y+0#0000000#ffffff0@3| @68
|~+0#4040ff13&| @73
|:+0#0000000&|s|i|g|n| |p|l|a|c|e| |1@1| |l|i|n|e|=|2| |n|a|m|e|=|s|2| @27|2|,|1| @10|A|l@1|