Problem: Sourcing buffer lines may lead to errors for conflicts.
Solution: Add the ++clear argument. (Yegappan Lakshmanan, closesvim/vim#9991)
35dc17634d
Documentation changes only. Vim9script is N/A.
Cherry-pick another documentation change for :source from latest Vim.
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>