patch 9.0.1981: not being able to scroll up in diff mode Commit: https://github.com/vim/vim/commit/0583491277dea9d14e000051c26405b90d839072 Author: zeertzjq <zeertzjq@outlook.com> Date: Wed Oct 4 20:12:37 2023 +0200 patch 9.0.1981: not being able to scroll up in diff mode Problem: Cannot scroll up in diff mode with many filler lines and zero 'scrolloff'. Solution: Invalidate w_cline_row before calling comp_botline(). closes: #13256 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: zeertzjq <zeertzjq@outlook.com>

" Tests for using Ctrl-A/Ctrl-X using DBCS.

set encoding=cp932
scriptencoding cp932

func SetUp()
  new
  set nrformats&
endfunc

func TearDown()
  bwipe!
endfunc

func Test_increment_dbcs_1()
  set nrformats+=alpha
  call setline(1, ["ŽR1"])
  exec "norm! 0\<C-A>"
  call assert_equal(["ŽR2"], getline(1, '$'))
  call assert_equal([0, 1, 3, 0], getpos('.'))

  call setline(1, ["‚`‚a‚b0xDE‚e"])
  exec "norm! 0\<C-X>"
  call assert_equal(["‚`‚a‚b0xDD‚e"], getline(1, '$'))
  call assert_equal([0, 1, 10, 0], getpos('.'))
endfunc

" vim: shiftwidth=2 sts=2 expandtab