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.

|f+0&#ffffff0|o@1| |1| @64
|f|o@1| |2| @64
|f|o+1&&|o+0&&| |3| @64
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|f|o@1| |7| @64
|f|o@1| |8| @64
|/|\|v> @66