patch 9.0.2091: Vim9: cannot convert list to string using += Commit: https://github.com/vim/vim/commit/6709816f7807c3ebb062a3124e660def184b739b Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Sun Nov 5 10:07:03 2023 +0100 patch 9.0.2091: Vim9: cannot convert list to string using += Problem: Vim9: cannot convert list to string using += (after 9.0.2072) Solution: convert dict index to string later in compile_member() fixes: #13485 closes: #13486 Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com> Signed-off-by: Christian Brabandt <cb@256bit.org>