patch 9.0.0458: splitting a line with a text prop "above" moves it down Commit: https://github.com/vim/vim/commit/3b93cf218fc70897c11de0415221e7899e9a527a Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 13 18:34:18 2022 +0100 patch 9.0.0458: splitting a line with a text prop "above" moves it down Problem: Splitting a line with a text prop "above" moves it to a new line below. Solution: Keep an "above" text prop above the first line.

| +0#af5f00255#ffffff0@1|0| >a+0#0000000&@4| @65
| +0#af5f00255&@1|1| |b+0#0000000&@4| @65
| +0#af5f00255&@1|2| |c+0#0000000&@4| @65
| +0#af5f00255&@1|3| |d+0#0000000&@4| @65
|~+0#4040ff13&| @73
|~| @73
|~| @73
| +0#0000000&@56|4|,|1| @10|A|l@1|