patch 9.0.1036: undo misbehaves when writing from an insert mode mapping Commit: https://github.com/vim/vim/commit/3f8f82772313af9f2417b06651f30988b63e1c96 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Dec 8 21:49:35 2022 +0000 patch 9.0.1036: undo misbehaves when writing from an insert mode mapping Problem: Undo misbehaves when writing from an insert mode mapping. Solution: Sync undo when writing. (closes https://github.com/vim/vim/issues/11674)

# vim: set ft=yaml sw=2 et :

# START_INDENT
map1:
sub1:
- list item
map2:
- another list
# END_INDENT

# START_INDENT
map: &anchor
map: val
# END_INDENT

# START_INDENT
map: |
line1
line2
# END_INDENT