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vim-patch:9.0.1279: display shows lines scrolled down erroneously (#22126)

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Problem:    Display shows lines scrolled down erroneously. (Yishai Lerner)
Solution:   Do not change "wl_lnum" at index zero. (closes vim/vim#11938)

61fdbfa1e3

Co-authored-by: Bram Moolenaar <Bram@vim.org>
This commit is contained in:
zeertzjq
2023-02-05 09:37:12 +08:00
committed by GitHub
parent 4b9bb3a184
commit 5c4b503d3c
3 changed files with 76 additions and 1 deletions
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49
test/functional/legacy/move_spec.lua Normal file
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@@ -0,0 +1,49 @@
local helpers = require('test.functional.helpers')(after_each)
local Screen = require('test.functional.ui.screen')
local clear = helpers.clear
local feed = helpers.feed
local funcs = helpers.funcs
before_each(clear)
describe(':move', function()
-- oldtest: Test_move_undo()
it('redraws correctly when undone', function()
local screen = Screen.new(60, 10)
screen:set_default_attr_ids({
[0] = {bold = true, foreground = Screen.colors.Blue}, -- NonText
})
screen:attach()
funcs.setline(1, {'First', 'Second', 'Third', 'Fourth'})
feed('gg:move +1<CR>')
screen:expect([[
Second |
^First |
Third |
Fourth |
{0:~ }|
{0:~ }|
{0:~ }|
{0:~ }|
{0:~ }|
:move +1 |
]])
-- here the display would show the last few lines scrolled down
feed('u')
feed(':<Esc>')
screen:expect([[
^First |
Second |
Third |
Fourth |
{0:~ }|
{0:~ }|
{0:~ }|
{0:~ }|
{0:~ }|
|
]])
end)
end)