patch 8.1.1945: popup window "firstline" cannot be reset Commit: https://github.com/vim/vim/commit/9e67b6a6a126f401417590dedf1bd38f71bfbae4 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 30 17:34:08 2019 +0200 patch 8.1.1945: popup window "firstline" cannot be reset Problem: Popup window "firstline" cannot be reset. Solution: Allow for setting "firstline" to zero. Fix that the text jumps to the top when using win_execute(). (closes #4876)

|f+0&#ffff4012|o|o+0&#ffffff0| |1| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |2| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |3| @64
|f+1&&|o|o+0&&| |4| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |5| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |6| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |7| @64
|f+0&#ffff4012|o|o+0&#ffffff0| |8| @64
|/|f|o> @66