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fix(highlight): preserve background transparency in 'winblend' #34302
Problem: When using 'winblend', transparent backgrounds (-1) are forced to default colors (usually black) during attribute blending, breaking the transparency effect. Solution: Check original background colors before blending in hl_blend_attrs(). If both background and foreground originally had transparent backgrounds, preserve transparency instead of forcing default colors.
This commit is contained in:
glepnir
GitHub
@ -8439,6 +8439,13 @@ describe('float window', function()
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[23] = { blend = 100, bold = true, foreground = Screen.colors.Magenta },
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[24] = { foreground = tonumber('0x7f007f'), bold = true, background = Screen.colors.White },
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[25] = { foreground = tonumber('0x7f007f'), bold = true, background = Screen.colors.Grey90 },
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[26] = { foreground = Screen.colors.Black },
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[27] = { bold = true, foreground = tonumber('0x7f007f') },
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[28] = { foreground = tonumber('0x990000') },
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[29] = { foreground = Screen.colors.Gray20 },
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[30] = { bold = true, foreground = tonumber('0x00007f') },
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[31] = { foreground = Screen.colors.Red, blend = 80 },
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[32] = { foreground = Screen.colors.Blue1, blend = 100, bold = true },
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})
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insert([[
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Lorem ipsum dolor sit amet, consectetur
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@ -8752,41 +8759,52 @@ describe('float window', function()
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api.nvim_win_set_config(win, { border = 'single', title = 'Title', footer = 'Footer' })
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api.nvim_set_option_value('winblend', 100, { win = win })
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api.nvim_set_option_value('cursorline', true, { win = 0 })
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command('hi clear VertSplit')
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-- 'winblend' with transparent background. #18576
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command('hi clear VertSplit | hi Normal guibg=NONE ctermbg=NONE')
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api.nvim_win_set_option(win, 'winhighlight', 'Normal:Normal')
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feed('k0')
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if multigrid then
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screen:expect {
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screen:expect({
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grid = [[
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## grid 1
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[2:--------------------------------------------------]|*8
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[3:--------------------------------------------------]|
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## grid 2
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Ut enim ad minim veniam, quis nostrud |
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exercitation ullamco laboris nisi ut aliquip ex |
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ea commodo consequat. Duis aute irure dolor in |
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reprehenderit in voluptate velit esse cillum |
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dolore eu fugiat nulla pariatur. Excepteur sint |
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occaecat cupidatat non proident, sunt in culpa |
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{16:^qui officia deserunt mollit anim id est }|
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laborum. |
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## grid 3
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## grid 4
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{17:┌}{23:Title}{17:──────────┐}|
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{17:│}{11:popup text}{18: }{17:│}|
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{17:│}{19:~ }{17:│}|*2
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{17:└}{23:Footer}{17:─────────┘}|
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]],
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## grid 1
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[2:--------------------------------------------------]|*8
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[3:--------------------------------------------------]|
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## grid 2
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Ut enim ad minim veniam, quis nostrud |
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exercitation ullamco laboris nisi ut aliquip ex |
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ea commodo consequat. Duis aute irure dolor in |
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reprehenderit in voluptate velit esse cillum |
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dolore eu fugiat nulla pariatur. Excepteur sint |
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occaecat cupidatat non proident, sunt in culpa |
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{16:^qui officia deserunt mollit anim id est }|
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laborum. |
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## grid 3
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## grid 4
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{17:┌}{23:Title}{17:──────────┐}|
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{17:│}{31:popup text}{17: │}|
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{17:│}{32:~ }{17:│}|*2
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{17:└}{23:Footer}{17:─────────┘}|
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]],
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win_pos = { [2] = { height = 8, startcol = 0, startrow = 0, width = 50, win = 1000 } },
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float_pos = { [4] = { 1001, 'NW', 1, 2, 5, true, 50, 1, 2, 5 } },
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}
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win_viewport = {
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[2] = { win = 1000, topline = 3, botline = 11, curline = 9, curcol = 0, linecount = 11, sum_scroll_delta = 3 },
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[4] = { win = 1001, topline = 2, botline = 4, curline = 2, curcol = 7, linecount = 3, sum_scroll_delta = 2 },
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},
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win_viewport_margins = {
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[2] = { bottom = 0, left = 0, right = 0, top = 0, win = 1000 },
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[4] = { bottom = 1, left = 1, right = 1, top = 1, win = 1001 },
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},
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})
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else
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screen:expect([[
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Ut enim ad minim veniam, quis nostrud |
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exercitation ullamco laboris nisi ut aliquip ex |
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ea co{20:┌}{24:Title}{20:──────────┐}Duis aute irure dolor in |
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repre{20:│}{5:popup}{6:it i}{5:text}{20:lu│}tate velit esse cillum |
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dolor{20:│}{21:~}{20:eu fugiat null│} pariatur. Excepteur sint |
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occae{20:│}{21:~}{20:t cupidatat no│} proident, sunt in culpa |
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ea co{26:┌}{27:Title}{26:──────────┐}Duis aute irure dolor in |
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repre{26:│}{28:popup}{29:it i}{28:text}{26:lu│}tate velit esse cillum |
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dolor{26:│}{30:~}{26:eu fugiat null│} pariatur. Excepteur sint |
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occae{26:│}{30:~}{26:t cupidatat no│} proident, sunt in culpa |
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{16:^qui o}{22:└}{25:Footer}{22:─────────┘}{16:ollit anim id est }|
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laborum. |
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@ -2672,6 +2672,11 @@ describe('pager', function()
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[10] = { background = Screen.colors.Grey100, bold = true, foreground = tonumber('0xe5e5ff') },
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[11] = { background = Screen.colors.Grey100, bold = true, foreground = tonumber('0x2b8452') },
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[12] = { bold = true, reverse = true },
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[13] = { foreground = Screen.colors.Grey0 },
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[14] = { foreground = Screen.colors.Grey90 },
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[15] = { foreground = tonumber('0x00000c') },
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[16] = { bold = true, foreground = tonumber('0xe5e5ff') },
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[17] = { bold = true, foreground = tonumber('0x2b8452') },
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})
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command('set more')
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@ -3005,60 +3010,52 @@ aliquip ex ea commodo consequat.]]
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it('clears "-- more --" message', function()
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command('hi MsgArea guisp=Yellow blend=10')
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feed(':echon join(range(20), "\\n")<cr>')
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screen:expect {
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grid = [[
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{7:0}{8: }|
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{9:1}{10: }|
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{9:2}{10: }|
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{9:3}{10: }|
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{9:4}{10: }|
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{9:5}{10: }|
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{9:6}{10: }|
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{11:--}{8: }{11:More}{8: }{11:--}{8:^ }|
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]],
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}
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screen:expect([[
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{13:0}{14: }|
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{15:1}{16: }|
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{15:2}{16: }|
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{15:3}{16: }|
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{15:4}{16: }|
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{15:5}{16: }|
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{15:6}{16: }|
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{17:--}{14: }{17:More}{14: }{17:--}{14:^ }|
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]])
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feed('j')
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screen:expect {
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grid = [[
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{7:1}{8: }|
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{9:2}{10: }|
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{9:3}{10: }|
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{9:4}{10: }|
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{9:5}{10: }|
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{9:6}{10: }|
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{9:7}{10: }|
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{11:--}{8: }{11:More}{8: }{11:--}{8:^ }|
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]],
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}
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screen:expect([[
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{13:1}{14: }|
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{15:2}{16: }|
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{15:3}{16: }|
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{15:4}{16: }|
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{15:5}{16: }|
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{15:6}{16: }|
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{15:7}{16: }|
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{17:--}{14: }{17:More}{14: }{17:--}{14:^ }|
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]])
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feed('k')
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screen:expect {
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grid = [[
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{7:0}{8: }|
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{9:1}{10: }|
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{9:2}{10: }|
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{9:3}{10: }|
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{9:4}{10: }|
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{9:5}{10: }|
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{9:6}{10: }|
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{11:--}{8: }{11:More}{8: }{11:--}{8:^ }|
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]],
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}
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screen:expect([[
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{13:0}{14: }|
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{15:1}{16: }|
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{15:2}{16: }|
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{15:3}{16: }|
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{15:4}{16: }|
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{15:5}{16: }|
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{15:6}{16: }|
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{17:--}{14: }{17:More}{14: }{17:--}{14:^ }|
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]])
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feed('j')
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screen:expect {
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grid = [[
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{7:1}{8: }|
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{9:2}{10: }|
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{9:3}{10: }|
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{9:4}{10: }|
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{9:5}{10: }|
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{9:6}{10: }|
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{9:7}{10: }|
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{11:--}{8: }{11:More}{8: }{11:--}{8:^ }|
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]],
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}
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screen:expect([[
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{13:1}{14: }|
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{15:2}{16: }|
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{15:3}{16: }|
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{15:4}{16: }|
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{15:5}{16: }|
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{15:6}{16: }|
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{15:7}{16: }|
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{17:--}{14: }{17:More}{14: }{17:--}{14:^ }|
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]])
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end)
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it('with :!cmd does not crash on resize', function()
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