--- a/src/testdir/test_highlight.vim
+++ b/src/testdir/test_highlight.vim
@@ -1,1328 +1,1328 @@
-" Tests for ":highlight" and highlighting.
-
-source view_util.vim
-source screendump.vim
-source check.vim
-source script_util.vim
-import './vim9.vim' as v9
-
-func ClearDict(d)
-  for k in keys(a:d)
-    call remove(a:d, k)
-  endfor
-endfunc
-
-func Test_highlight()
-  " basic test if ":highlight" doesn't crash
-  highlight
-  hi Search
-
-  " test setting colors.
-  " test clearing one color and all doesn't generate error or warning
-  silent! hi NewGroup term=bold cterm=italic ctermfg=DarkBlue ctermbg=Grey gui= guifg=#00ff00 guibg=Cyan
-  silent! hi Group2 term= cterm=
-  hi Group3 term=underline cterm=bold
-
-  let res = split(execute("hi NewGroup"), "\n")[0]
-  " filter ctermfg and ctermbg, the numbers depend on the terminal
-  let res = substitute(res, 'ctermfg=\d*', 'ctermfg=2', '')
-  let res = substitute(res, 'ctermbg=\d*', 'ctermbg=3', '')
-  call assert_equal("NewGroup       xxx term=bold cterm=italic ctermfg=2 ctermbg=3",
-				\ res)
-  call assert_equal("Group2         xxx cleared",
-				\ split(execute("hi Group2"), "\n")[0])
-  call assert_equal("Group3         xxx term=underline cterm=bold",
-				\ split(execute("hi Group3"), "\n")[0])
-
-  hi clear NewGroup
-  call assert_equal("NewGroup       xxx cleared",
-				\ split(execute("hi NewGroup"), "\n")[0])
-  call assert_equal("Group2         xxx cleared",
-				\ split(execute("hi Group2"), "\n")[0])
-  hi Group2 NONE
-  call assert_equal("Group2         xxx cleared",
-				\ split(execute("hi Group2"), "\n")[0])
-  hi clear
-  call assert_equal("Group3         xxx cleared",
-				\ split(execute("hi Group3"), "\n")[0])
-  call assert_fails("hi Crash term='asdf", "E475:")
-
-  if has('gui_running')
-    call assert_fails('hi NotUsed guibg=none', 'E1361:')
-  endif
-endfunc
-
-func HighlightArgs(name)
-  return 'hi ' . substitute(split(execute('hi ' . a:name), '\n')[0], '\<xxx\>', '', '')
-endfunc
-
-func IsColorable()
-  return has('gui_running') || str2nr(&t_Co) >= 8
-endfunc
-
-func HiCursorLine()
-  let hiCursorLine = HighlightArgs('CursorLine')
-  if has('gui_running')
-    let guibg = matchstr(hiCursorLine, 'guibg=\w\+')
-    let hi_ul = 'hi CursorLine gui=underline guibg=NONE'
-    let hi_bg = 'hi CursorLine gui=NONE ' . guibg
-  else
-    let hi_ul = 'hi CursorLine cterm=underline ctermbg=NONE'
-    let hi_bg = 'hi CursorLine cterm=NONE ctermbg=Gray'
-  endif
-  return [hiCursorLine, hi_ul, hi_bg]
-endfunc
-
-func Check_lcs_eol_attrs(attrs, row, col)
-  let save_lcs = &lcs
-  set list
-
-  call assert_equal(a:attrs, ScreenAttrs(a:row, a:col)[0])
-
-  set nolist
-  let &lcs = save_lcs
-endfunc
-
-func Test_highlight_eol_with_cursorline()
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 20)
-  call setline(1, 'abcd')
-  call matchadd('Search', '\n')
-
-  " expected:
-  " 'abcd      '
-  "  ^^^^ ^^^^^   no highlight
-  "      ^        'Search' highlight
-  let attrs0 = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs0[0]], 4), attrs0[0:3])
-  call assert_equal(repeat([attrs0[0]], 5), attrs0[5:9])
-  call assert_notequal(attrs0[0], attrs0[4])
-
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " 'abcd      '
-  "  ^^^^         underline
-  "      ^        'Search' highlight with underline
-  "       ^^^^^   underline
-  let attrs = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-  call assert_equal([attrs[4]] + repeat([attrs[5]], 5), attrs[4:9])
-  call assert_notequal(attrs[0], attrs[4])
-  call assert_notequal(attrs[4], attrs[5])
-  call assert_notequal(attrs0[0], attrs[0])
-  call assert_notequal(attrs0[4], attrs[4])
-  call Check_lcs_eol_attrs(attrs, 1, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " 'abcd      '
-    "  ^^^^         bg-color of 'CursorLine'
-    "      ^        'Search' highlight
-    "       ^^^^^   bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(1, 10)[0]
-    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-    call assert_equal(repeat([attrs[5]], 5), attrs[5:9])
-    call assert_equal(attrs0[4], attrs[4])
-    call assert_notequal(attrs[0], attrs[4])
-    call assert_notequal(attrs[4], attrs[5])
-    call assert_notequal(attrs0[0], attrs[0])
-    call assert_notequal(attrs0[5], attrs[5])
-    call Check_lcs_eol_attrs(attrs, 1, 10)
-  endif
-
-  call CloseWindow()
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_with_cursorline_vertsplit()
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 5)
-  call setline(1, 'abcd')
-  call matchadd('Search', '\n')
-
-  let expected = "abcd |abcd     "
-  let actual = ScreenLines(1, 15)[0]
-  call assert_equal(expected, actual)
-
-  " expected:
-  " 'abcd |abcd     '
-  "  ^^^^  ^^^^^^^^^   no highlight
-  "      ^             'Search' highlight
-  "       ^            'VertSplit' highlight
-  let attrs0 = ScreenAttrs(1, 15)[0]
-  call assert_equal(repeat([attrs0[0]], 4), attrs0[0:3])
-  call assert_equal(repeat([attrs0[0]], 9), attrs0[6:14])
-  call assert_notequal(attrs0[0], attrs0[4])
-  call assert_notequal(attrs0[0], attrs0[5])
-  call assert_notequal(attrs0[4], attrs0[5])
-
-  setlocal cursorline
-
-  " expected:
-  " 'abcd |abcd     '
-  "  ^^^^              underline
-  "      ^             'Search' highlight with underline
-  "       ^            'VertSplit' highlight
-  "        ^^^^^^^^^   no highlight
-
-  " underline
-  exe hi_ul
-
-  let actual = ScreenLines(1, 15)[0]
-  call assert_equal(expected, actual)
-
-  let attrs = ScreenAttrs(1, 15)[0]
-  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-  call assert_equal(repeat([attrs[6]], 9), attrs[6:14])
-  call assert_equal(attrs0[5:14], attrs[5:14])
-  call assert_notequal(attrs[0], attrs[4])
-  call assert_notequal(attrs[0], attrs[5])
-  call assert_notequal(attrs[0], attrs[6])
-  call assert_notequal(attrs[4], attrs[5])
-  call assert_notequal(attrs[5], attrs[6])
-  call assert_notequal(attrs0[0], attrs[0])
-  call assert_notequal(attrs0[4], attrs[4])
-  call Check_lcs_eol_attrs(attrs, 1, 15)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    let actual = ScreenLines(1, 15)[0]
-    call assert_equal(expected, actual)
-
-    let attrs = ScreenAttrs(1, 15)[0]
-    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-    call assert_equal(repeat([attrs[6]], 9), attrs[6:14])
-    call assert_equal(attrs0[5:14], attrs[5:14])
-    call assert_notequal(attrs[0], attrs[4])
-    call assert_notequal(attrs[0], attrs[5])
-    call assert_notequal(attrs[0], attrs[6])
-    call assert_notequal(attrs[4], attrs[5])
-    call assert_notequal(attrs[5], attrs[6])
-    call assert_notequal(attrs0[0], attrs[0])
-    call assert_equal(attrs0[4], attrs[4])
-    call Check_lcs_eol_attrs(attrs, 1, 15)
-  endif
-
-  call CloseWindow()
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_with_cursorline_rightleft()
-  CheckFeature rightleft
-
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 10)
-  setlocal rightleft
-  call setline(1, 'abcd')
-  call matchadd('Search', '\n')
-  let attrs0 = ScreenAttrs(1, 10)[0]
-
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " '      dcba'
-  "        ^^^^   underline
-  "       ^       'Search' highlight with underline
-  "  ^^^^^        underline
-  let attrs = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs[9]], 4), attrs[6:9])
-  call assert_equal(repeat([attrs[4]], 5) + [attrs[5]], attrs[0:5])
-  call assert_notequal(attrs[9], attrs[5])
-  call assert_notequal(attrs[4], attrs[5])
-  call assert_notequal(attrs0[9], attrs[9])
-  call assert_notequal(attrs0[5], attrs[5])
-  call Check_lcs_eol_attrs(attrs, 1, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " '      dcba'
-    "        ^^^^   bg-color of 'CursorLine'
-    "       ^       'Search' highlight
-    "  ^^^^^        bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(1, 10)[0]
-    call assert_equal(repeat([attrs[9]], 4), attrs[6:9])
-    call assert_equal(repeat([attrs[4]], 5), attrs[0:4])
-    call assert_equal(attrs0[5], attrs[5])
-    call assert_notequal(attrs[9], attrs[5])
-    call assert_notequal(attrs[5], attrs[4])
-    call assert_notequal(attrs0[9], attrs[9])
-    call assert_notequal(attrs0[4], attrs[4])
-    call Check_lcs_eol_attrs(attrs, 1, 10)
-  endif
-
-  call CloseWindow()
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_with_cursorline_linewrap()
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 10)
-  call setline(1, [repeat('a', 51) . 'bcd', ''])
-  call matchadd('Search', '\n')
-
-  setlocal wrap
-  normal! gg$
-  let attrs0 = ScreenAttrs(5, 10)[0]
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " 'abcd      '
-  "  ^^^^         underline
-  "      ^        'Search' highlight with underline
-  "       ^^^^^   underline
-  let attrs = ScreenAttrs(5, 10)[0]
-  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-  call assert_equal([attrs[4]] + repeat([attrs[5]], 5), attrs[4:9])
-  call assert_notequal(attrs[0], attrs[4])
-  call assert_notequal(attrs[4], attrs[5])
-  call assert_notequal(attrs0[0], attrs[0])
-  call assert_notequal(attrs0[4], attrs[4])
-  call Check_lcs_eol_attrs(attrs, 5, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " 'abcd      '
-    "  ^^^^         bg-color of 'CursorLine'
-    "      ^        'Search' highlight
-    "       ^^^^^   bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(5, 10)[0]
-    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
-    call assert_equal(repeat([attrs[5]], 5), attrs[5:9])
-    call assert_equal(attrs0[4], attrs[4])
-    call assert_notequal(attrs[0], attrs[4])
-    call assert_notequal(attrs[4], attrs[5])
-    call assert_notequal(attrs0[0], attrs[0])
-    call assert_notequal(attrs0[5], attrs[5])
-    call Check_lcs_eol_attrs(attrs, 5, 10)
-  endif
-
-  setlocal nocursorline nowrap
-  normal! gg$
-  let attrs0 = ScreenAttrs(1, 10)[0]
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " 'aaabcd    '
-  "  ^^^^^^       underline
-  "        ^      'Search' highlight with underline
-  "         ^^^   underline
-  let attrs = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs[0]], 6), attrs[0:5])
-  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
-  call assert_notequal(attrs[0], attrs[6])
-  call assert_notequal(attrs[6], attrs[7])
-  call assert_notequal(attrs0[0], attrs[0])
-  call assert_notequal(attrs0[6], attrs[6])
-  call Check_lcs_eol_attrs(attrs, 1, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " 'aaabcd    '
-    "  ^^^^^^       bg-color of 'CursorLine'
-    "        ^      'Search' highlight
-    "         ^^^   bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(1, 10)[0]
-    call assert_equal(repeat([attrs[0]], 6), attrs[0:5])
-    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
-    call assert_equal(attrs0[6], attrs[6])
-    call assert_notequal(attrs[0], attrs[6])
-    call assert_notequal(attrs[6], attrs[7])
-    call assert_notequal(attrs0[0], attrs[0])
-    call assert_notequal(attrs0[7], attrs[7])
-    call Check_lcs_eol_attrs(attrs, 1, 10)
-  endif
-
-  call CloseWindow()
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_with_cursorline_sign()
-  CheckFeature signs
-
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 10)
-  call setline(1, 'abcd')
-  call matchadd('Search', '\n')
-
-  sign define Sign text=>>
-  exe 'sign place 1 line=1 name=Sign buffer=' . bufnr('')
-  let attrs0 = ScreenAttrs(1, 10)[0]
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " '>>abcd    '
-  "  ^^           sign
-  "    ^^^^       underline
-  "        ^      'Search' highlight with underline
-  "         ^^^   underline
-  let attrs = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
-  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
-  call assert_notequal(attrs[2], attrs[6])
-  call assert_notequal(attrs[6], attrs[7])
-  call assert_notequal(attrs0[2], attrs[2])
-  call assert_notequal(attrs0[6], attrs[6])
-  call Check_lcs_eol_attrs(attrs, 1, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " '>>abcd    '
-    "  ^^           sign
-    "    ^^^^       bg-color of 'CursorLine'
-    "        ^      'Search' highlight
-    "         ^^^   bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(1, 10)[0]
-    call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
-    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
-    call assert_equal(attrs0[6], attrs[6])
-    call assert_notequal(attrs[2], attrs[6])
-    call assert_notequal(attrs[6], attrs[7])
-    call assert_notequal(attrs0[2], attrs[2])
-    call assert_notequal(attrs0[7], attrs[7])
-    call Check_lcs_eol_attrs(attrs, 1, 10)
-  endif
-
-  sign unplace 1
-  call CloseWindow()
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_with_cursorline_breakindent()
-  CheckFeature linebreak
-
-  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
-
-  call NewWindow('topleft 5', 10)
-  set showbreak=xxx
-  setlocal breakindent breakindentopt=min:0,shift:1 showbreak=>
-  call setline(1, ' ' . repeat('a', 9) . 'bcd')
-  call matchadd('Search', '\n')
-  let attrs0 = ScreenAttrs(2, 10)[0]
-  setlocal cursorline
-
-  " underline
-  exe hi_ul
-
-  " expected:
-  " '  >bcd    '
-  "  ^^^          breakindent and showbreak
-  "     ^^^       underline
-  "        ^      'Search' highlight with underline
-  "         ^^^   underline
-  let attrs = ScreenAttrs(2, 10)[0]
-  call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
-  call assert_equal(repeat([attrs[3]], 3), attrs[3:5])
-  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
-  call assert_equal(attrs0[0], attrs[0])
-  call assert_notequal(attrs[0], attrs[2])
-  call assert_notequal(attrs[2], attrs[3])
-  call assert_notequal(attrs[3], attrs[6])
-  call assert_notequal(attrs[6], attrs[7])
-  call assert_notequal(attrs0[2], attrs[2])
-  call assert_notequal(attrs0[3], attrs[3])
-  call assert_notequal(attrs0[6], attrs[6])
-  call Check_lcs_eol_attrs(attrs, 2, 10)
-
-  if IsColorable()
-    " bg-color
-    exe hi_bg
-
-    " expected:
-    " '  >bcd    '
-    "  ^^^          breakindent and showbreak
-    "     ^^^       bg-color of 'CursorLine'
-    "        ^      'Search' highlight
-    "         ^^^   bg-color of 'CursorLine'
-    let attrs = ScreenAttrs(2, 10)[0]
-    call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
-    call assert_equal(repeat([attrs[3]], 3), attrs[3:5])
-    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
-    call assert_equal(attrs0[0], attrs[0])
-    call assert_equal(attrs0[6], attrs[6])
-    call assert_notequal(attrs[0], attrs[2])
-    call assert_notequal(attrs[2], attrs[3])
-    call assert_notequal(attrs[3], attrs[6])
-    call assert_notequal(attrs[6], attrs[7])
-    call assert_notequal(attrs0[2], attrs[2])
-    call assert_notequal(attrs0[3], attrs[3])
-    call assert_notequal(attrs0[7], attrs[7])
-    call Check_lcs_eol_attrs(attrs, 2, 10)
-  endif
-
-  call CloseWindow()
-  set showbreak=
-  setlocal showbreak=
-  exe hiCursorLine
-endfunc
-
-func Test_highlight_eol_on_diff()
-  call setline(1, ['abcd', ''])
-  call matchadd('Search', '\n')
-  let attrs0 = ScreenAttrs(1, 10)[0]
-
-  diffthis
-  botright new
-  diffthis
-
-  " expected:
-  " '  abcd    '
-  "  ^^           sign
-  "    ^^^^ ^^^   'DiffAdd' highlight
-  "        ^      'Search' highlight
-  let attrs = ScreenAttrs(1, 10)[0]
-  call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
-  call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
-  call assert_equal(repeat([attrs[2]], 3), attrs[7:9])
-  call assert_equal(attrs0[4], attrs[6])
-  call assert_notequal(attrs[0], attrs[2])
-  call assert_notequal(attrs[0], attrs[6])
-  call assert_notequal(attrs[2], attrs[6])
-  call Check_lcs_eol_attrs(attrs, 1, 10)
-
-  bwipe!
-  diffoff
-endfunc
-
-func Test_termguicolors()
-  CheckOption termguicolors
-  if has('vtp') && !has('vcon') && !has('gui_running')
-    " Win32: 'guicolors' doesn't work without virtual console.
-    call assert_fails('set termguicolors', 'E954:')
-    return
-  endif
-
-  " Basic test that setting 'termguicolors' works with one color.
-  set termguicolors
-  redraw
-  set t_Co=1
-  redraw
-  set t_Co=0
-  redraw
-endfunc
-
-func Test_cursorline_after_yank()
-  CheckScreendump
-
-  call writefile([
-	\ 'set cul rnu',
-	\ 'call setline(1, ["","1","2","3",""])',
-	\ ], 'Xtest_cursorline_yank', 'D')
-  let buf = RunVimInTerminal('-S Xtest_cursorline_yank', {'rows': 8})
-  call TermWait(buf)
-  call term_sendkeys(buf, "Gy3k")
-  call TermWait(buf)
-  call term_sendkeys(buf, "jj")
-
-  call VerifyScreenDump(buf, 'Test_cursorline_yank_01', {})
-
-  " clean up
-  call StopVimInTerminal(buf)
-endfunc
-
-" test for issue #4862
-func Test_put_before_cursorline()
-  new
-  only!
-  call setline(1, 'A')
-  redraw
-  let std_attr = screenattr(1, 1)
-  set cursorline
-  redraw
-  let cul_attr = screenattr(1, 1)
-  normal yyP
-  redraw
-  " Line 1 has cursor so it should be highlighted with CursorLine.
-  call assert_equal(cul_attr, screenattr(1, 1))
-  " And CursorLine highlighting from the second line should be gone.
-  call assert_equal(std_attr, screenattr(2, 1))
-  set nocursorline
-  bwipe!
-endfunc
-
-func Test_cursorline_with_visualmode()
-  CheckScreendump
-
-  call writefile([
-	\ 'set cul',
-	\ 'call setline(1, repeat(["abc"], 50))',
-	\ ], 'Xtest_cursorline_with_visualmode', 'D')
-  let buf = RunVimInTerminal('-S Xtest_cursorline_with_visualmode', {'rows': 12})
-  call TermWait(buf)
-  call term_sendkeys(buf, "V\<C-f>kkkjk")
-
-  call VerifyScreenDump(buf, 'Test_cursorline_with_visualmode_01', {})
-
-  " clean up
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_cursorcolumn_insert_on_tab()
-  CheckScreendump
-
-  let lines =<< trim END
-    call setline(1, ['123456789', "a\tb"])
-    set cursorcolumn
-    call cursor(2, 2)
-  END
-  call writefile(lines, 'Xcuc_insert_on_tab', 'D')
-
-  let buf = RunVimInTerminal('-S Xcuc_insert_on_tab', #{rows: 8})
-  call TermWait(buf)
-  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_1', {})
-
-  call term_sendkeys(buf, 'i')
-  call TermWait(buf)
-  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_2', {})
-
-  call term_sendkeys(buf, "\<C-O>")
-  call TermWait(buf)
-  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_3', {})
-
-  call term_sendkeys(buf, 'i')
-  call TermWait(buf)
-  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_2', {})
-
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_cursorcolumn_callback()
-  CheckScreendump
-  CheckFeature timers
-
-  let lines =<< trim END
-      call setline(1, ['aaaaa', 'bbbbb', 'ccccc', 'ddddd'])
-      set cursorcolumn
-      call cursor(4, 5)
-
-      func Func(timer)
-        call cursor(1, 1)
-      endfunc
-
-      call timer_start(300, 'Func')
-  END
-  call writefile(lines, 'Xcuc_timer', 'D')
-
-  let buf = RunVimInTerminal('-S Xcuc_timer', #{rows: 8})
-  call TermWait(buf, 310)
-  call VerifyScreenDump(buf, 'Test_cursorcolumn_callback_1', {})
-
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_wincolor()
-  CheckScreendump
-  " make sure the width is enough for the test
-  set columns=80
-
-  let lines =<< trim END
-	set cursorline cursorcolumn rnu
-	call setline(1, ["","1111111111","22222222222","3 here 3","","the cat is out of the bag"])
-	set wincolor=Pmenu
-	hi CatLine guifg=green ctermfg=green
-	hi Reverse gui=reverse cterm=reverse
-	syn match CatLine /^the.*/
-	call prop_type_add("foo", {"highlight": "Reverse", "combine": 1})
-	call prop_add(6, 12, {"type": "foo", "end_col": 15})
-	/here
-  END
-  call writefile(lines, 'Xtest_wincolor', 'D')
-  let buf = RunVimInTerminal('-S Xtest_wincolor', {'rows': 8})
-  call TermWait(buf)
-  call term_sendkeys(buf, "2G5lvj")
-  call TermWait(buf)
-
-  call VerifyScreenDump(buf, 'Test_wincolor_01', {})
-
-  " clean up
-  call term_sendkeys(buf, "\<Esc>")
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_wincolor_listchars()
-  CheckScreendump
-  CheckFeature conceal
-
-  let lines =<< trim END
-	call setline(1, ["one","\t\tsome random text enough long to show 'extends' and 'precedes' includingnbsps, preceding tabs and trailing spaces    ","three"])
-	set wincolor=Todo
-	set nowrap cole=1 cocu+=n
-	set list lcs=eol:$,tab:>-,space:.,trail:_,extends:>,precedes:<,conceal:*,nbsp:#
-	call matchadd('Conceal', 'text')
-	normal 2G5zl
-  END
-  call writefile(lines, 'Xtest_wincolorlcs', 'D')
-  let buf = RunVimInTerminal('-S Xtest_wincolorlcs', {'rows': 8})
-
-  call VerifyScreenDump(buf, 'Test_wincolor_lcs', {})
-
-  " clean up
-  call term_sendkeys(buf, "\<Esc>")
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_colorcolumn()
-  CheckScreendump
-
-  " check that setting 'colorcolumn' when entering a buffer works
-  let lines =<< trim END
-	split
-	edit X
-	call setline(1, ["1111111111","22222222222","3333333333"])
-	set nomodified
-	set colorcolumn=3,9
-	set number cursorline cursorlineopt=number
-	wincmd w
-	buf X
-  END
-  call writefile(lines, 'Xtest_colorcolumn', 'D')
-  let buf = RunVimInTerminal('-S Xtest_colorcolumn', {'rows': 10})
-  call term_sendkeys(buf, ":\<CR>")
-  call VerifyScreenDump(buf, 'Test_colorcolumn_1', {})
-
-  " clean up
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_colorcolumn_bri()
-  CheckScreendump
-
-  " check 'colorcolumn' when 'breakindent' is set
-  let lines =<< trim END
-	call setline(1, 'The quick brown fox jumped over the lazy dogs')
-  END
-  call writefile(lines, 'Xtest_colorcolumn_bri', 'D')
-  let buf = RunVimInTerminal('-S Xtest_colorcolumn_bri', {'rows': 10,'columns': 40})
-  call term_sendkeys(buf, ":set co=40 linebreak bri briopt=shift:2 cc=40,41,43\<CR>")
-  call VerifyScreenDump(buf, 'Test_colorcolumn_2', {})
-
-  " clean up
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_colorcolumn_sbr()
-  CheckScreendump
-
-  " check 'colorcolumn' when 'showbreak' is set
-  let lines =<< trim END
-	call setline(1, 'The quick brown fox jumped over the lazy dogs')
-  END
-  call writefile(lines, 'Xtest_colorcolumn_srb', 'D')
-  let buf = RunVimInTerminal('-S Xtest_colorcolumn_srb', {'rows': 10,'columns': 40})
-  call term_sendkeys(buf, ":set co=40 showbreak=+++>\\  cc=40,41,43\<CR>")
-  call VerifyScreenDump(buf, 'Test_colorcolumn_3', {})
-
-  " clean up
-  call StopVimInTerminal(buf)
-endfunc
-
-func Test_visual_sbr()
-  CheckScreendump
-
-  " check Visual highlight when 'showbreak' is set
-  let lines =<< trim END
-      set showbreak=>
-      call setline(1, 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.')
-      exe "normal! z1\<CR>"
-  END
-  call writefile(lines, 'Xtest_visual_sbr', 'D')
-  let buf = RunVimInTerminal('-S Xtest_visual_sbr', {'rows': 6,'columns': 60})
-
-  call term_sendkeys(buf, "v$")
-  call VerifyScreenDump(buf, 'Test_visual_sbr_1', {})
-
-  " clean up
-  call term_sendkeys(buf, "\<Esc>")
-  call StopVimInTerminal(buf)
-endfunc
-
-" This test must come before the Test_cursorline test, as it appears this
-" defines the Normal highlighting group anyway.
-func Test_1_highlight_Normalgroup_exists()
-  let hlNormal = HighlightArgs('Normal')
-  if !has('gui_running')
-    call assert_match('hi Normal\s*clear', hlNormal)
-  elseif has('gui_gtk2') || has('gui_gnome') || has('gui_gtk3')
-    " expect is DEFAULT_FONT of gui_gtk_x11.c
-    call assert_match('hi Normal\s*font=Monospace 10', hlNormal)
-  elseif has('gui_motif')
-    " expect is DEFAULT_FONT of gui_x11.c
-    call assert_match('hi Normal\s*font=7x13', hlNormal)
-  elseif has('win32')
-    " expect any font
-    call assert_match('hi Normal\s*font=.*', hlNormal)
-  endif
-endfunc
-
-" Do this test last, sometimes restoring the columns doesn't work
-func Test_z_no_space_before_xxx()
-  let l:org_columns = &columns
-  set columns=17
-  let l:hi_StatusLineTermNC = join(split(execute('hi StatusLineTermNC')))
-  call assert_match('StatusLineTermNC xxx', l:hi_StatusLineTermNC)
-  let &columns = l:org_columns
-endfunc
-
-" Test for :highlight command errors
-func Test_highlight_cmd_errors()
-  if has('gui_running')
-    " This test doesn't fail in the MS-Windows console version.
-    call assert_fails('hi Xcomment ctermbg=fg', 'E419:')
-    call assert_fails('hi Xcomment ctermfg=bg', 'E420:')
-    call assert_fails('hi Xcomment ctermfg=ul', 'E453:')
-    call assert_fails('hi ' .. repeat('a', 201) .. ' ctermfg=black', 'E1249:')
-  endif
-
-  " Try using a very long terminal code. Define a dummy terminal code for this
-  " test.
-  let &t_fo = "\<Esc>1;"
-  let c = repeat("t_fo,", 100) . "t_fo"
-  call assert_fails('exe "hi Xgroup1 start=" . c', 'E422:')
-  let &t_fo = ""
-endfunc
-
-" Test for 'highlight' option
-func Test_highlight_opt()
-  let save_hl = &highlight
-  call assert_fails('set highlight=j:b', 'E474:')
-  set highlight=f\ r
-  call assert_equal('f r', &highlight)
-  set highlight=fb
-  call assert_equal('fb', &highlight)
-  set highlight=fi
-  call assert_equal('fi', &highlight)
-  set highlight=f-
-  call assert_equal('f-', &highlight)
-  set highlight=fr
-  call assert_equal('fr', &highlight)
-  set highlight=fs
-  call assert_equal('fs', &highlight)
-  set highlight=fu
-  call assert_equal('fu', &highlight)
-  set highlight=fc
-  call assert_equal('fc', &highlight)
-  set highlight=ft
-  call assert_equal('ft', &highlight)
-  call assert_fails('set highlight=fr:Search', 'E474:')
-  set highlight=f:$#
-  call assert_match('W18:', v:statusmsg)
-  let &highlight = save_hl
-endfunc
-
-" Test for User group highlighting used in the statusline
-func Test_highlight_User()
-  CheckNotGui
-  hi User1 ctermfg=12
-  redraw!
-  call assert_equal('12', synIDattr(synIDtrans(hlID('User1')), 'fg'))
-  hi clear
-endfunc
-
-" Test for using RGB color values in a highlight group
-func Test_xxlast_highlight_RGB_color()
-  CheckCanRunGui
-  gui -f
-  hi MySearch guifg=#110000 guibg=#001100 guisp=#000011
-  call assert_equal('#110000', synIDattr(synIDtrans(hlID('MySearch')), 'fg#'))
-  call assert_equal('#001100', synIDattr(synIDtrans(hlID('MySearch')), 'bg#'))
-  call assert_equal('#000011', synIDattr(synIDtrans(hlID('MySearch')), 'sp#'))
-  hi clear
-endfunc
-
-" Test for using default highlighting group
-func Test_highlight_default()
-  highlight MySearch ctermfg=7
-  highlight default MySearch ctermfg=5
-  let hlSearch = HighlightArgs('MySearch')
-  call assert_match('ctermfg=7', hlSearch)
-
-  highlight default QFName ctermfg=3
-  call assert_match('ctermfg=3', HighlightArgs('QFName'))
-  hi clear
-endfunc
-
-" Test for 'ctermul in a highlight group
-func Test_highlight_ctermul()
-  CheckNotGui
-  call assert_notmatch('ctermul=', HighlightArgs('Normal'))
-  highlight Normal ctermul=3
-  call assert_match('ctermul=3', HighlightArgs('Normal'))
-  call assert_equal('3', synIDattr(synIDtrans(hlID('Normal')), 'ul'))
-  highlight Normal ctermul=NONE
-endfunc
-
-" Test for specifying 'start' and 'stop' in a highlight group
-func Test_highlight_start_stop()
-  hi HlGrp1 start=<Esc>[27h;<Esc>[<Space>r;
-  call assert_match("start=^[[27h;^[[ r;", HighlightArgs('HlGrp1'))
-  hi HlGrp1 start=NONE
-  call assert_notmatch("start=", HighlightArgs('HlGrp1'))
-  hi HlGrp2 stop=<Esc>[27h;<Esc>[<Space>r;
-  call assert_match("stop=^[[27h;^[[ r;", HighlightArgs('HlGrp2'))
-  hi HlGrp2 stop=NONE
-  call assert_notmatch("stop=", HighlightArgs('HlGrp2'))
-  set t_xy=^[foo;
-  set t_xz=^[bar;
-  hi HlGrp3 start=t_xy stop=t_xz
-  let d = hlget('HlGrp3')
-  call assert_equal('^[foo;', d[0].start)
-  call assert_equal('^[bar;', d[0].stop)
-  set t_xy= t_xz=
-  hi clear
-endfunc
-
-" Test for setting various 'term' attributes
-func Test_highlight_term_attr()
-  hi HlGrp3 term=bold,underline,undercurl,underdouble,underdotted,underdashed,strikethrough,reverse,italic,standout
-  call assert_equal('hi HlGrp3          term=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,strikethrough', HighlightArgs('HlGrp3'))
-  hi HlGrp3 term=NONE
-  call assert_equal('hi HlGrp3          cleared', HighlightArgs('HlGrp3'))
-  hi clear
-endfunc
-
-func Test_highlight_clear_restores_links()
-  let aaa_id = hlID('aaa')
-  call assert_equal(aaa_id, 0)
-
-  " create default link aaa --> bbb
-  hi def link aaa bbb
-  let id_aaa = hlID('aaa')
-  let hl_aaa_bbb = HighlightArgs('aaa')
-
-  " try to redefine default link aaa --> ccc; check aaa --> bbb
-  hi def link aaa ccc
-  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
-
-  " clear aaa; check aaa --> bbb
-  hi clear aaa
-  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
-
-  " link aaa --> ccc; clear aaa; check aaa --> bbb
-  hi link aaa ccc
-  let id_ccc = hlID('ccc')
-  call assert_equal(synIDtrans(id_aaa), id_ccc)
-  hi clear aaa
-  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
-
-  " forcibly set default link aaa --> ddd
-  hi! def link aaa ddd
-  let id_ddd = hlID('ddd')
-  let hl_aaa_ddd = HighlightArgs('aaa')
-  call assert_equal(synIDtrans(id_aaa), id_ddd)
-
-  " link aaa --> eee; clear aaa; check aaa --> ddd
-  hi link aaa eee
-  let eee_id = hlID('eee')
-  call assert_equal(synIDtrans(id_aaa), eee_id)
-  hi clear aaa
-  call assert_equal(HighlightArgs('aaa'), hl_aaa_ddd)
-endfunc
-
-func Test_highlight_clear_restores_context()
-  func FuncContextDefault()
-    hi def link Context ContextDefault
-  endfun
-
-  func FuncContextRelink()
-    " Dummy line
-    hi link Context ContextRelink
-  endfunc
-
-  let scriptContextDefault = MakeScript("FuncContextDefault")
-  let scriptContextRelink = MakeScript("FuncContextRelink")
-  let patContextDefault = fnamemodify(scriptContextDefault, ':t') .. ' line 1'
-  let patContextRelink = fnamemodify(scriptContextRelink, ':t') .. ' line 2'
-
-  exec 'source ' .. scriptContextDefault
-  let hlContextDefault = execute("verbose hi Context")
-  call assert_match(patContextDefault, hlContextDefault)
-
-  exec 'source ' .. scriptContextRelink
-  let hlContextRelink = execute("verbose hi Context")
-  call assert_match(patContextRelink, hlContextRelink)
-
-  hi clear
-  let hlContextAfterClear = execute("verbose hi Context")
-  call assert_match(patContextDefault, hlContextAfterClear)
-
-  delfunc FuncContextDefault
-  delfunc FuncContextRelink
-  call delete(scriptContextDefault)
-  call delete(scriptContextRelink)
-endfunc
-
-func Test_highlight_default_colorscheme_restores_links()
-  hi link TestLink Identifier
-  hi TestHi ctermbg=red
-
-  let hlTestLinkPre = HighlightArgs('TestLink')
-  let hlTestHiPre = HighlightArgs('TestHi')
-
-  " Test colorscheme
-  call assert_equal("\ndefault", execute('colorscheme'))
-  hi clear
-  if exists('syntax_on')
-    syntax reset
-  endif
-  let g:colors_name = 'test'
-  call assert_equal("\ntest", execute('colorscheme'))
-  hi link TestLink ErrorMsg
-  hi TestHi ctermbg=green
-
-  " Restore default highlighting
-  colorscheme default
-  " 'default' should work no matter if highlight group was cleared
-  call assert_equal("\ndefault", execute('colorscheme'))
-  hi def link TestLink Identifier
-  hi def TestHi ctermbg=red
-  let hlTestLinkPost = HighlightArgs('TestLink')
-  let hlTestHiPost = HighlightArgs('TestHi')
-  call assert_equal(hlTestLinkPre, hlTestLinkPost)
-  call assert_equal(hlTestHiPre, hlTestHiPost)
-  hi clear
-endfunc
-
-func Test_colornames_assignment_and_lookup()
-  CheckAnyOf Feature:gui_running Feature:termguicolors
-
-  " Ensure highlight command can find custom color.
-  let v:colornames['a redish white'] = '#ffeedd'
-  highlight Normal guifg='a redish white'
-  highlight clear
-  call ClearDict(v:colornames)
-endfunc
-
-func Test_colornames_default_list()
-  CheckAnyOf Feature:gui_running Feature:termguicolors
-
-  " Ensure default lists are loaded automatically and can be used for all gui fields.
-  call assert_equal(0, len(v:colornames))
-  highlight Normal guifg='rebecca purple' guibg='rebecca purple' guisp='rebecca purple'
-  call assert_notequal(0, len(v:colornames))
-  echo v:colornames['rebecca purple']
-  highlight clear
-  call ClearDict(v:colornames)
-endfunc
-
-func Test_colornames_overwrite_default()
-  CheckAnyOf Feature:gui_running Feature:termguicolors
-
-  " Ensure entries in v:colornames can be overwritten.
-  " Load default color scheme to trigger default color list loading.
-  colorscheme default
-  let old_rebecca_purple = v:colornames['rebecca purple']
-  highlight Normal guifg='rebecca purple' guibg='rebecca purple'
-  let v:colornames['rebecca purple'] = '#550099'
-  highlight Normal guifg='rebecca purple' guibg='rebecca purple'
-  let v:colornames['rebecca purple'] = old_rebecca_purple
-  highlight clear
-endfunc
-
-func Test_colornames_assignment_and_unassignment()
-  " No feature check is needed for this test because the v:colornames dict
-  " always exists with +eval. The feature checks are only required for
-  " commands that do color lookup.
-
-  " Ensure we cannot overwrite the v:colornames dict.
-  call assert_fails("let v:colornames = {}", 'E46:')
-
-  " Ensure we can delete entries from the v:colornames dict.
-  let v:colornames['x1'] = '#111111'
-  call assert_equal(v:colornames['x1'], '#111111')
-  unlet v:colornames['x1']
-  call assert_fails("echo v:colornames['x1']")
-endfunc
-
-" Test for the hlget() function
-func Test_hlget()
-  let lines =<< trim END
-    call assert_notequal([], filter(hlget(), 'v:val.name == "Visual"'))
-    call assert_equal([], hlget('SomeHLGroup'))
-    highlight MyHLGroup term=standout cterm=reverse ctermfg=10 ctermbg=Black
-    call assert_equal([{'id': hlID('MyHLGroup'), 'ctermfg': '10', 'name': 'MyHLGroup', 'term': {'standout': v:true}, 'ctermbg': '0', 'cterm': {'reverse': v:true}}], hlget('MyHLGroup'))
-    highlight clear MyHLGroup
-    call assert_equal(v:true, hlget('MyHLGroup')[0].cleared)
-    highlight link MyHLGroup IncSearch
-    call assert_equal('IncSearch', hlget('MyHLGroup')[0].linksto)
-    highlight clear MyHLGroup
-    call assert_equal([], hlget(test_null_string()))
-    call assert_equal([], hlget(""))
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for resolving highlight group links
-  let lines =<< trim END
-    highlight hlgA term=bold
-    VAR hlgAid = hlID('hlgA')
-    highlight link hlgB hlgA
-    VAR hlgBid = hlID('hlgB')
-    highlight link hlgC hlgB
-    VAR hlgCid = hlID('hlgC')
-    call assert_equal('hlgA', hlget('hlgB')[0].linksto)
-    call assert_equal('hlgB', hlget('hlgC')[0].linksto)
-    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
-                      \ 'term': {'bold': v:true}}], hlget('hlgA'))
-    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
-                      \ 'linksto': 'hlgA'}], hlget('hlgB'))
-    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
-                      \ 'linksto': 'hlgB'}], hlget('hlgC'))
-    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
-                      \ 'term': {'bold': v:true}}], hlget('hlgA', v:false))
-    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
-                      \ 'linksto': 'hlgA'}], hlget('hlgB', 0))
-    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
-                      \ 'linksto': 'hlgB'}], hlget('hlgC', v:false))
-    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
-                      \ 'term': {'bold': v:true}}], hlget('hlgA', v:true))
-    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
-                      \ 'term': {'bold': v:true}}], hlget('hlgB', 1))
-    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
-                      \ 'term': {'bold': v:true}}], hlget('hlgC', v:true))
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  call assert_fails('call hlget([])', 'E1174:')
-  call assert_fails('call hlget("abc", "xyz")', 'E1212:')
-endfunc
-
-" Test for the hlset() function
-func Test_hlset()
-  let lines =<< trim END
-    call assert_equal(0, hlset(test_null_list()))
-    call assert_equal(0, hlset([]))
-    call assert_fails('call hlset(["Search"])', 'E715:')
-    call hlset(hlget())
-    call hlset([{'name': 'NewHLGroup', 'cterm': {'reverse': v:true}, 'ctermfg': '10'}])
-    call assert_equal({'reverse': v:true}, hlget('NewHLGroup')[0].cterm)
-    call hlset([{'name': 'NewHLGroup', 'cterm': {'bold': v:true}}])
-    call assert_equal({'bold': v:true}, hlget('NewHLGroup')[0].cterm)
-    call hlset([{'name': 'NewHLGroup', 'cleared': v:true}])
-    call assert_equal(v:true, hlget('NewHLGroup')[0].cleared)
-    call hlset([{'name': 'NewHLGroup', 'linksto': 'Search'}])
-    call assert_false(has_key(hlget('NewHLGroup')[0], 'cleared'))
-    call assert_equal('Search', hlget('NewHLGroup')[0].linksto)
-    call assert_fails("call hlset([{'name': [], 'ctermfg': '10'}])", 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'cleared': []}])",
-          \ 'E745:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'cterm': 'Blue'}])",
-          \ 'E715:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermbg': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermfg': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermul': []}])",
-          \ 'E928:')
-    if has('gui')
-      call assert_fails("call hlset([{'name': 'NewHLGroup', 'font': []}])",
-            \ 'E928:')
-    endif
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'gui': 'Cyan'}])",
-          \ 'E715:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guibg': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guifg': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guisp': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'linksto': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'start': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'stop': []}])",
-          \ 'E928:')
-    call assert_fails("call hlset([{'name': 'NewHLGroup', 'term': 'Cyan'}])",
-          \ 'E715:')
-    call assert_equal('Search', hlget('NewHLGroup')[0].linksto)
-    highlight clear NewHLGroup
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for clearing the 'term', 'cterm' and 'gui' attributes of a highlight
-  " group.
-  let lines =<< trim END
-    highlight myhlg1 term=bold cterm=italic gui=standout
-    VAR id = hlID('myhlg1')
-    call hlset([{'name': 'myhlg1', 'term': {}}])
-    call assert_equal([{'id': id, 'name': 'myhlg1',
-                \ 'cterm': {'italic': v:true}, 'gui': {'standout': v:true}}],
-                \ hlget('myhlg1'))
-    call hlset([{'name': 'myhlg1', 'cterm': {}}])
-    call assert_equal([{'id': id, 'name': 'myhlg1',
-                \ 'gui': {'standout': v:true}}], hlget('myhlg1'))
-    call hlset([{'name': 'myhlg1', 'gui': {}}])
-    call assert_equal([{'id': id, 'name': 'myhlg1', 'cleared': v:true}],
-                \ hlget('myhlg1'))
-    highlight clear myhlg1
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for setting all the 'term', 'cterm' and 'gui' attributes of a
-  " highlight group
-  let lines =<< trim END
-    VAR attr = {'bold': v:true, 'underline': v:true,
-                \ 'undercurl': v:true, 'underdouble': v:true,
-                \ 'underdotted': v:true, 'underdashed': v:true,
-                \ 'strikethrough': v:true, 'reverse': v:true, 'italic': v:true,
-                \ 'standout': v:true, 'nocombine': v:true}
-    call hlset([{'name': 'myhlg2', 'term': attr, 'cterm': attr, 'gui': attr}])
-    VAR id2 = hlID('myhlg2')
-    VAR expected = "myhlg2 xxx term=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough cterm=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough gui=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough"
-    VAR output = execute('highlight myhlg2')
-    LET output = output->split("\n")->join()->substitute('\s\+', ' ', 'g')
-    call assert_equal(expected, output)
-    call assert_equal([{'id': id2, 'name': 'myhlg2', 'gui': attr,
-                      \ 'term': attr, 'cterm': attr}], hlget('myhlg2'))
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for clearing some of the 'term', 'cterm' and 'gui' attributes of a
-  " highlight group
-  let lines =<< trim END
-    VAR attr = {'bold': v:false, 'underline': v:true, 'strikethrough': v:true}
-    call hlset([{'name': 'myhlg2', 'term': attr, 'cterm': attr, 'gui': attr}])
-    VAR id2 = hlID('myhlg2')
-    VAR expected = "myhlg2 xxx term=underline,strikethrough cterm=underline,strikethrough gui=underline,strikethrough"
-    VAR output = execute('highlight myhlg2')
-    LET output = output->split("\n")->join()->substitute('\s\+', ' ', 'g')
-    call assert_equal(expected, output)
-    LET attr = {'underline': v:true, 'strikethrough': v:true}
-    call assert_equal([{'id': id2, 'name': 'myhlg2', 'gui': attr,
-                      \ 'term': attr, 'cterm': attr}], hlget('myhlg2'))
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for clearing the attributes and link of a highlight group
-  let lines =<< trim END
-    highlight myhlg3 ctermbg=green guibg=green
-    highlight! default link myhlg3 ErrorMsg
-    VAR id3 = hlID('myhlg3')
-    call hlset([{'name': 'myhlg3', 'cleared': v:true, 'linksto': 'NONE'}])
-    call assert_equal([{'id': id3, 'name': 'myhlg3', 'cleared': v:true}],
-                      \ hlget('myhlg3'))
-    highlight clear hlg3
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for setting default attributes for a highlight group
-  let lines =<< trim END
-    call hlset([{'name': 'hlg4', 'ctermfg': '8'}])
-    call hlset([{'name': 'hlg4', 'default': v:true, 'ctermfg': '9'}])
-    VAR id4 = hlID('hlg4')
-    call assert_equal([{'id': id4, 'name': 'hlg4', 'ctermfg': '8'}],
-                    \ hlget('hlg4'))
-    highlight clear hlg4
-
-    call hlset([{'name': 'hlg5', 'default': v:true, 'ctermbg': '2'}])
-    call hlset([{'name': 'hlg5', 'ctermbg': '4'}])
-    VAR id5 = hlID('hlg5')
-    call assert_equal([{'id': id5, 'name': 'hlg5', 'ctermbg': '4'}],
-                    \ hlget('hlg5'))
-    highlight clear hlg5
-
-    call hlset([{'name': 'hlg6', 'linksto': 'Error'}])
-    VAR id6 = hlID('hlg6')
-    call hlset([{'name': 'hlg6', 'default': v:true, 'ctermbg': '2'}])
-    call assert_equal([{'id': id6, 'name': 'hlg6', 'linksto': 'Error'}],
-                    \ hlget('hlg6'))
-    highlight clear hlg6
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for setting default links for a highlight group
-  let lines =<< trim END
-    call hlset([{'name': 'hlg7', 'ctermfg': '5'}])
-    call hlset([{'name': 'hlg7', 'default': v:true, 'linksto': 'Search'}])
-    VAR id7 = hlID('hlg7')
-    call assert_equal([{'id': id7, 'name': 'hlg7', 'ctermfg': '5'}],
-                    \ hlget('hlg7'))
-    highlight clear hlg7
-
-    call hlset([{'name': 'hlg8', 'default': v:true, 'linksto': 'Search'}])
-    VAR id8 = hlID('hlg8')
-    call assert_equal([{'id': id8, 'name': 'hlg8', 'default': v:true,
-                    \ 'linksto': 'Search'}], hlget('hlg8'))
-    call hlset([{'name': 'hlg8', 'ctermbg': '2'}])
-    call assert_equal([{'id': id8, 'name': 'hlg8', 'ctermbg': '2'}],
-                    \ hlget('hlg8'))
-    highlight clear hlg8
-
-    highlight default link hlg9 ErrorMsg
-    VAR hlg_save = hlget('hlg9')
-    LET hlg_save[0]['name'] = 'hlg9dup'
-    call hlset(hlg_save)
-    VAR id9 = hlID('hlg9dup')
-    highlight clear hlg9dup
-    call assert_equal([{'id': id9, 'name': 'hlg9dup', 'default': v:true,
-                    \ 'linksto': 'ErrorMsg'}], hlget('hlg9dup'))
-    highlight clear hlg9
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for force creating a link to a highlight group
-  let lines =<< trim END
-    call hlset([{'name': 'hlg10', 'ctermfg': '8'}])
-    call hlset([{'name': 'hlg10', 'linksto': 'Search'}])
-    VAR id10 = hlID('hlg10')
-    call assert_equal([{'id': id10, 'name': 'hlg10', 'ctermfg': '8'}],
-                    \ hlget('hlg10'))
-    call hlset([{'name': 'hlg10', 'linksto': 'Search', 'force': v:true}])
-    call assert_equal([{'id': id10, 'name': 'hlg10', 'ctermfg': '8',
-                    \ 'linksto': 'Search'}], hlget('hlg10'))
-    highlight clear hlg10
-  END
-  call v9.CheckLegacyAndVim9Success(lines)
-
-  " Test for empty values of attributes
-  call hlset([{'name': 'hlg11', 'cterm': {}}])
-  call hlset([{'name': 'hlg11', 'ctermfg': ''}])
-  call hlset([{'name': 'hlg11', 'ctermbg': ''}])
-  call hlset([{'name': 'hlg11', 'ctermul': ''}])
-  call hlset([{'name': 'hlg11', 'font': ''}])
-  call hlset([{'name': 'hlg11', 'gui': {}}])
-  call hlset([{'name': 'hlg11', 'guifg': ''}])
-  call hlset([{'name': 'hlg11', 'guibg': ''}])
-  call hlset([{'name': 'hlg11', 'guisp': ''}])
-  call hlset([{'name': 'hlg11', 'start': ''}])
-  call hlset([{'name': 'hlg11', 'stop': ''}])
-  call hlset([{'name': 'hlg11', 'term': {}}])
-  call assert_true(hlget('hlg11')[0].cleared)
-endfunc
-
-" vim: shiftwidth=2 sts=2 expandtab
+" Tests for ":highlight" and highlighting.
+
+source view_util.vim
+source screendump.vim
+source check.vim
+source script_util.vim
+import './vim9.vim' as v9
+
+func ClearDict(d)
+  for k in keys(a:d)
+    call remove(a:d, k)
+  endfor
+endfunc
+
+func Test_highlight()
+  " basic test if ":highlight" doesn't crash
+  highlight
+  hi Search
+
+  " test setting colors.
+  " test clearing one color and all doesn't generate error or warning
+  silent! hi NewGroup term=bold cterm=italic ctermfg=DarkBlue ctermbg=Grey gui= guifg=#00ff00 guibg=Cyan
+  silent! hi Group2 term= cterm=
+  hi Group3 term=underline cterm=bold
+
+  let res = split(execute("hi NewGroup"), "\n")[0]
+  " filter ctermfg and ctermbg, the numbers depend on the terminal
+  let res = substitute(res, 'ctermfg=\d*', 'ctermfg=2', '')
+  let res = substitute(res, 'ctermbg=\d*', 'ctermbg=3', '')
+  call assert_equal("NewGroup       xxx term=bold cterm=italic ctermfg=2 ctermbg=3",
+				\ res)
+  call assert_equal("Group2         xxx cleared",
+				\ split(execute("hi Group2"), "\n")[0])
+  call assert_equal("Group3         xxx term=underline cterm=bold",
+				\ split(execute("hi Group3"), "\n")[0])
+
+  hi clear NewGroup
+  call assert_equal("NewGroup       xxx cleared",
+				\ split(execute("hi NewGroup"), "\n")[0])
+  call assert_equal("Group2         xxx cleared",
+				\ split(execute("hi Group2"), "\n")[0])
+  hi Group2 NONE
+  call assert_equal("Group2         xxx cleared",
+				\ split(execute("hi Group2"), "\n")[0])
+  hi clear
+  call assert_equal("Group3         xxx cleared",
+				\ split(execute("hi Group3"), "\n")[0])
+  call assert_fails("hi Crash term='asdf", "E475:")
+
+  if has('gui_running')
+    call assert_fails('hi NotUsed guibg=none', 'E1361:')
+  endif
+endfunc
+
+func HighlightArgs(name)
+  return 'hi ' . substitute(split(execute('hi ' . a:name), '\n')[0], '\<xxx\>', '', '')
+endfunc
+
+func IsColorable()
+  return has('gui_running') || str2nr(&t_Co) >= 8
+endfunc
+
+func HiCursorLine()
+  let hiCursorLine = HighlightArgs('CursorLine')
+  if has('gui_running')
+    let guibg = matchstr(hiCursorLine, 'guibg=\w\+')
+    let hi_ul = 'hi CursorLine gui=underline guibg=NONE'
+    let hi_bg = 'hi CursorLine gui=NONE ' . guibg
+  else
+    let hi_ul = 'hi CursorLine cterm=underline ctermbg=NONE'
+    let hi_bg = 'hi CursorLine cterm=NONE ctermbg=Gray'
+  endif
+  return [hiCursorLine, hi_ul, hi_bg]
+endfunc
+
+func Check_lcs_eol_attrs(attrs, row, col)
+  let save_lcs = &lcs
+  set list
+
+  call assert_equal(a:attrs, ScreenAttrs(a:row, a:col)[0])
+
+  set nolist
+  let &lcs = save_lcs
+endfunc
+
+func Test_highlight_eol_with_cursorline()
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 20)
+  call setline(1, 'abcd')
+  call matchadd('Search', '\n')
+
+  " expected:
+  " 'abcd      '
+  "  ^^^^ ^^^^^   no highlight
+  "      ^        'Search' highlight
+  let attrs0 = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs0[0]], 4), attrs0[0:3])
+  call assert_equal(repeat([attrs0[0]], 5), attrs0[5:9])
+  call assert_notequal(attrs0[0], attrs0[4])
+
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " 'abcd      '
+  "  ^^^^         underline
+  "      ^        'Search' highlight with underline
+  "       ^^^^^   underline
+  let attrs = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+  call assert_equal([attrs[4]] + repeat([attrs[5]], 5), attrs[4:9])
+  call assert_notequal(attrs[0], attrs[4])
+  call assert_notequal(attrs[4], attrs[5])
+  call assert_notequal(attrs0[0], attrs[0])
+  call assert_notequal(attrs0[4], attrs[4])
+  call Check_lcs_eol_attrs(attrs, 1, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " 'abcd      '
+    "  ^^^^         bg-color of 'CursorLine'
+    "      ^        'Search' highlight
+    "       ^^^^^   bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(1, 10)[0]
+    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+    call assert_equal(repeat([attrs[5]], 5), attrs[5:9])
+    call assert_equal(attrs0[4], attrs[4])
+    call assert_notequal(attrs[0], attrs[4])
+    call assert_notequal(attrs[4], attrs[5])
+    call assert_notequal(attrs0[0], attrs[0])
+    call assert_notequal(attrs0[5], attrs[5])
+    call Check_lcs_eol_attrs(attrs, 1, 10)
+  endif
+
+  call CloseWindow()
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_with_cursorline_vertsplit()
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 5)
+  call setline(1, 'abcd')
+  call matchadd('Search', '\n')
+
+  let expected = "abcd |abcd     "
+  let actual = ScreenLines(1, 15)[0]
+  call assert_equal(expected, actual)
+
+  " expected:
+  " 'abcd |abcd     '
+  "  ^^^^  ^^^^^^^^^   no highlight
+  "      ^             'Search' highlight
+  "       ^            'VertSplit' highlight
+  let attrs0 = ScreenAttrs(1, 15)[0]
+  call assert_equal(repeat([attrs0[0]], 4), attrs0[0:3])
+  call assert_equal(repeat([attrs0[0]], 9), attrs0[6:14])
+  call assert_notequal(attrs0[0], attrs0[4])
+  call assert_notequal(attrs0[0], attrs0[5])
+  call assert_notequal(attrs0[4], attrs0[5])
+
+  setlocal cursorline
+
+  " expected:
+  " 'abcd |abcd     '
+  "  ^^^^              underline
+  "      ^             'Search' highlight with underline
+  "       ^            'VertSplit' highlight
+  "        ^^^^^^^^^   no highlight
+
+  " underline
+  exe hi_ul
+
+  let actual = ScreenLines(1, 15)[0]
+  call assert_equal(expected, actual)
+
+  let attrs = ScreenAttrs(1, 15)[0]
+  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+  call assert_equal(repeat([attrs[6]], 9), attrs[6:14])
+  call assert_equal(attrs0[5:14], attrs[5:14])
+  call assert_notequal(attrs[0], attrs[4])
+  call assert_notequal(attrs[0], attrs[5])
+  call assert_notequal(attrs[0], attrs[6])
+  call assert_notequal(attrs[4], attrs[5])
+  call assert_notequal(attrs[5], attrs[6])
+  call assert_notequal(attrs0[0], attrs[0])
+  call assert_notequal(attrs0[4], attrs[4])
+  call Check_lcs_eol_attrs(attrs, 1, 15)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    let actual = ScreenLines(1, 15)[0]
+    call assert_equal(expected, actual)
+
+    let attrs = ScreenAttrs(1, 15)[0]
+    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+    call assert_equal(repeat([attrs[6]], 9), attrs[6:14])
+    call assert_equal(attrs0[5:14], attrs[5:14])
+    call assert_notequal(attrs[0], attrs[4])
+    call assert_notequal(attrs[0], attrs[5])
+    call assert_notequal(attrs[0], attrs[6])
+    call assert_notequal(attrs[4], attrs[5])
+    call assert_notequal(attrs[5], attrs[6])
+    call assert_notequal(attrs0[0], attrs[0])
+    call assert_equal(attrs0[4], attrs[4])
+    call Check_lcs_eol_attrs(attrs, 1, 15)
+  endif
+
+  call CloseWindow()
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_with_cursorline_rightleft()
+  CheckFeature rightleft
+
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 10)
+  setlocal rightleft
+  call setline(1, 'abcd')
+  call matchadd('Search', '\n')
+  let attrs0 = ScreenAttrs(1, 10)[0]
+
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " '      dcba'
+  "        ^^^^   underline
+  "       ^       'Search' highlight with underline
+  "  ^^^^^        underline
+  let attrs = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs[9]], 4), attrs[6:9])
+  call assert_equal(repeat([attrs[4]], 5) + [attrs[5]], attrs[0:5])
+  call assert_notequal(attrs[9], attrs[5])
+  call assert_notequal(attrs[4], attrs[5])
+  call assert_notequal(attrs0[9], attrs[9])
+  call assert_notequal(attrs0[5], attrs[5])
+  call Check_lcs_eol_attrs(attrs, 1, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " '      dcba'
+    "        ^^^^   bg-color of 'CursorLine'
+    "       ^       'Search' highlight
+    "  ^^^^^        bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(1, 10)[0]
+    call assert_equal(repeat([attrs[9]], 4), attrs[6:9])
+    call assert_equal(repeat([attrs[4]], 5), attrs[0:4])
+    call assert_equal(attrs0[5], attrs[5])
+    call assert_notequal(attrs[9], attrs[5])
+    call assert_notequal(attrs[5], attrs[4])
+    call assert_notequal(attrs0[9], attrs[9])
+    call assert_notequal(attrs0[4], attrs[4])
+    call Check_lcs_eol_attrs(attrs, 1, 10)
+  endif
+
+  call CloseWindow()
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_with_cursorline_linewrap()
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 10)
+  call setline(1, [repeat('a', 51) . 'bcd', ''])
+  call matchadd('Search', '\n')
+
+  setlocal wrap
+  normal! gg$
+  let attrs0 = ScreenAttrs(5, 10)[0]
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " 'abcd      '
+  "  ^^^^         underline
+  "      ^        'Search' highlight with underline
+  "       ^^^^^   underline
+  let attrs = ScreenAttrs(5, 10)[0]
+  call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+  call assert_equal([attrs[4]] + repeat([attrs[5]], 5), attrs[4:9])
+  call assert_notequal(attrs[0], attrs[4])
+  call assert_notequal(attrs[4], attrs[5])
+  call assert_notequal(attrs0[0], attrs[0])
+  call assert_notequal(attrs0[4], attrs[4])
+  call Check_lcs_eol_attrs(attrs, 5, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " 'abcd      '
+    "  ^^^^         bg-color of 'CursorLine'
+    "      ^        'Search' highlight
+    "       ^^^^^   bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(5, 10)[0]
+    call assert_equal(repeat([attrs[0]], 4), attrs[0:3])
+    call assert_equal(repeat([attrs[5]], 5), attrs[5:9])
+    call assert_equal(attrs0[4], attrs[4])
+    call assert_notequal(attrs[0], attrs[4])
+    call assert_notequal(attrs[4], attrs[5])
+    call assert_notequal(attrs0[0], attrs[0])
+    call assert_notequal(attrs0[5], attrs[5])
+    call Check_lcs_eol_attrs(attrs, 5, 10)
+  endif
+
+  setlocal nocursorline nowrap
+  normal! gg$
+  let attrs0 = ScreenAttrs(1, 10)[0]
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " 'aaabcd    '
+  "  ^^^^^^       underline
+  "        ^      'Search' highlight with underline
+  "         ^^^   underline
+  let attrs = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs[0]], 6), attrs[0:5])
+  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
+  call assert_notequal(attrs[0], attrs[6])
+  call assert_notequal(attrs[6], attrs[7])
+  call assert_notequal(attrs0[0], attrs[0])
+  call assert_notequal(attrs0[6], attrs[6])
+  call Check_lcs_eol_attrs(attrs, 1, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " 'aaabcd    '
+    "  ^^^^^^       bg-color of 'CursorLine'
+    "        ^      'Search' highlight
+    "         ^^^   bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(1, 10)[0]
+    call assert_equal(repeat([attrs[0]], 6), attrs[0:5])
+    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
+    call assert_equal(attrs0[6], attrs[6])
+    call assert_notequal(attrs[0], attrs[6])
+    call assert_notequal(attrs[6], attrs[7])
+    call assert_notequal(attrs0[0], attrs[0])
+    call assert_notequal(attrs0[7], attrs[7])
+    call Check_lcs_eol_attrs(attrs, 1, 10)
+  endif
+
+  call CloseWindow()
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_with_cursorline_sign()
+  CheckFeature signs
+
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 10)
+  call setline(1, 'abcd')
+  call matchadd('Search', '\n')
+
+  sign define Sign text=>>
+  exe 'sign place 1 line=1 name=Sign buffer=' . bufnr('')
+  let attrs0 = ScreenAttrs(1, 10)[0]
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " '>>abcd    '
+  "  ^^           sign
+  "    ^^^^       underline
+  "        ^      'Search' highlight with underline
+  "         ^^^   underline
+  let attrs = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
+  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
+  call assert_notequal(attrs[2], attrs[6])
+  call assert_notequal(attrs[6], attrs[7])
+  call assert_notequal(attrs0[2], attrs[2])
+  call assert_notequal(attrs0[6], attrs[6])
+  call Check_lcs_eol_attrs(attrs, 1, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " '>>abcd    '
+    "  ^^           sign
+    "    ^^^^       bg-color of 'CursorLine'
+    "        ^      'Search' highlight
+    "         ^^^   bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(1, 10)[0]
+    call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
+    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
+    call assert_equal(attrs0[6], attrs[6])
+    call assert_notequal(attrs[2], attrs[6])
+    call assert_notequal(attrs[6], attrs[7])
+    call assert_notequal(attrs0[2], attrs[2])
+    call assert_notequal(attrs0[7], attrs[7])
+    call Check_lcs_eol_attrs(attrs, 1, 10)
+  endif
+
+  sign unplace 1
+  call CloseWindow()
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_with_cursorline_breakindent()
+  CheckFeature linebreak
+
+  let [hiCursorLine, hi_ul, hi_bg] = HiCursorLine()
+
+  call NewWindow('topleft 5', 10)
+  set showbreak=xxx
+  setlocal breakindent breakindentopt=min:0,shift:1 showbreak=>
+  call setline(1, ' ' . repeat('a', 9) . 'bcd')
+  call matchadd('Search', '\n')
+  let attrs0 = ScreenAttrs(2, 10)[0]
+  setlocal cursorline
+
+  " underline
+  exe hi_ul
+
+  " expected:
+  " '  >bcd    '
+  "  ^^^          breakindent and showbreak
+  "     ^^^       underline
+  "        ^      'Search' highlight with underline
+  "         ^^^   underline
+  let attrs = ScreenAttrs(2, 10)[0]
+  call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
+  call assert_equal(repeat([attrs[3]], 3), attrs[3:5])
+  call assert_equal([attrs[6]] + repeat([attrs[7]], 3), attrs[6:9])
+  call assert_equal(attrs0[0], attrs[0])
+  call assert_notequal(attrs[0], attrs[2])
+  call assert_notequal(attrs[2], attrs[3])
+  call assert_notequal(attrs[3], attrs[6])
+  call assert_notequal(attrs[6], attrs[7])
+  call assert_notequal(attrs0[2], attrs[2])
+  call assert_notequal(attrs0[3], attrs[3])
+  call assert_notequal(attrs0[6], attrs[6])
+  call Check_lcs_eol_attrs(attrs, 2, 10)
+
+  if IsColorable()
+    " bg-color
+    exe hi_bg
+
+    " expected:
+    " '  >bcd    '
+    "  ^^^          breakindent and showbreak
+    "     ^^^       bg-color of 'CursorLine'
+    "        ^      'Search' highlight
+    "         ^^^   bg-color of 'CursorLine'
+    let attrs = ScreenAttrs(2, 10)[0]
+    call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
+    call assert_equal(repeat([attrs[3]], 3), attrs[3:5])
+    call assert_equal(repeat([attrs[7]], 3), attrs[7:9])
+    call assert_equal(attrs0[0], attrs[0])
+    call assert_equal(attrs0[6], attrs[6])
+    call assert_notequal(attrs[0], attrs[2])
+    call assert_notequal(attrs[2], attrs[3])
+    call assert_notequal(attrs[3], attrs[6])
+    call assert_notequal(attrs[6], attrs[7])
+    call assert_notequal(attrs0[2], attrs[2])
+    call assert_notequal(attrs0[3], attrs[3])
+    call assert_notequal(attrs0[7], attrs[7])
+    call Check_lcs_eol_attrs(attrs, 2, 10)
+  endif
+
+  call CloseWindow()
+  set showbreak=
+  setlocal showbreak=
+  exe hiCursorLine
+endfunc
+
+func Test_highlight_eol_on_diff()
+  call setline(1, ['abcd', ''])
+  call matchadd('Search', '\n')
+  let attrs0 = ScreenAttrs(1, 10)[0]
+
+  diffthis
+  botright new
+  diffthis
+
+  " expected:
+  " '  abcd    '
+  "  ^^           sign
+  "    ^^^^ ^^^   'DiffAdd' highlight
+  "        ^      'Search' highlight
+  let attrs = ScreenAttrs(1, 10)[0]
+  call assert_equal(repeat([attrs[0]], 2), attrs[0:1])
+  call assert_equal(repeat([attrs[2]], 4), attrs[2:5])
+  call assert_equal(repeat([attrs[2]], 3), attrs[7:9])
+  call assert_equal(attrs0[4], attrs[6])
+  call assert_notequal(attrs[0], attrs[2])
+  call assert_notequal(attrs[0], attrs[6])
+  call assert_notequal(attrs[2], attrs[6])
+  call Check_lcs_eol_attrs(attrs, 1, 10)
+
+  bwipe!
+  diffoff
+endfunc
+
+func Test_termguicolors()
+  CheckOption termguicolors
+  if has('vtp') && !has('vcon') && !has('gui_running')
+    " Win32: 'guicolors' doesn't work without virtual console.
+    call assert_fails('set termguicolors', 'E954:')
+    return
+  endif
+
+  " Basic test that setting 'termguicolors' works with one color.
+  set termguicolors
+  redraw
+  set t_Co=1
+  redraw
+  set t_Co=0
+  redraw
+endfunc
+
+func Test_cursorline_after_yank()
+  CheckScreendump
+
+  call writefile([
+	\ 'set cul rnu',
+	\ 'call setline(1, ["","1","2","3",""])',
+	\ ], 'Xtest_cursorline_yank', 'D')
+  let buf = RunVimInTerminal('-S Xtest_cursorline_yank', {'rows': 8})
+  call TermWait(buf)
+  call term_sendkeys(buf, "Gy3k")
+  call TermWait(buf)
+  call term_sendkeys(buf, "jj")
+
+  call VerifyScreenDump(buf, 'Test_cursorline_yank_01', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
+" test for issue #4862
+func Test_put_before_cursorline()
+  new
+  only!
+  call setline(1, 'A')
+  redraw
+  let std_attr = screenattr(1, 1)
+  set cursorline
+  redraw
+  let cul_attr = screenattr(1, 1)
+  normal yyP
+  redraw
+  " Line 1 has cursor so it should be highlighted with CursorLine.
+  call assert_equal(cul_attr, screenattr(1, 1))
+  " And CursorLine highlighting from the second line should be gone.
+  call assert_equal(std_attr, screenattr(2, 1))
+  set nocursorline
+  bwipe!
+endfunc
+
+func Test_cursorline_with_visualmode()
+  CheckScreendump
+
+  call writefile([
+	\ 'set cul',
+	\ 'call setline(1, repeat(["abc"], 50))',
+	\ ], 'Xtest_cursorline_with_visualmode', 'D')
+  let buf = RunVimInTerminal('-S Xtest_cursorline_with_visualmode', {'rows': 12})
+  call TermWait(buf)
+  call term_sendkeys(buf, "V\<C-f>kkkjk")
+
+  call VerifyScreenDump(buf, 'Test_cursorline_with_visualmode_01', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_cursorcolumn_insert_on_tab()
+  CheckScreendump
+
+  let lines =<< trim END
+    call setline(1, ['123456789', "a\tb"])
+    set cursorcolumn
+    call cursor(2, 2)
+  END
+  call writefile(lines, 'Xcuc_insert_on_tab', 'D')
+
+  let buf = RunVimInTerminal('-S Xcuc_insert_on_tab', #{rows: 8})
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_1', {})
+
+  call term_sendkeys(buf, 'i')
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_2', {})
+
+  call term_sendkeys(buf, "\<C-O>")
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_3', {})
+
+  call term_sendkeys(buf, 'i')
+  call TermWait(buf)
+  call VerifyScreenDump(buf, 'Test_cursorcolumn_insert_on_tab_2', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_cursorcolumn_callback()
+  CheckScreendump
+  CheckFeature timers
+
+  let lines =<< trim END
+      call setline(1, ['aaaaa', 'bbbbb', 'ccccc', 'ddddd'])
+      set cursorcolumn
+      call cursor(4, 5)
+
+      func Func(timer)
+        call cursor(1, 1)
+      endfunc
+
+      call timer_start(300, 'Func')
+  END
+  call writefile(lines, 'Xcuc_timer', 'D')
+
+  let buf = RunVimInTerminal('-S Xcuc_timer', #{rows: 8})
+  call TermWait(buf, 310)
+  call VerifyScreenDump(buf, 'Test_cursorcolumn_callback_1', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_wincolor()
+  CheckScreendump
+  " make sure the width is enough for the test
+  set columns=80
+
+  let lines =<< trim END
+	set cursorline cursorcolumn rnu
+	call setline(1, ["","1111111111","22222222222","3 here 3","","the cat is out of the bag"])
+	set wincolor=Pmenu
+	hi CatLine guifg=green ctermfg=green
+	hi Reverse gui=reverse cterm=reverse
+	syn match CatLine /^the.*/
+	call prop_type_add("foo", {"highlight": "Reverse", "combine": 1})
+	call prop_add(6, 12, {"type": "foo", "end_col": 15})
+	/here
+  END
+  call writefile(lines, 'Xtest_wincolor', 'D')
+  let buf = RunVimInTerminal('-S Xtest_wincolor', {'rows': 8})
+  call TermWait(buf)
+  call term_sendkeys(buf, "2G5lvj")
+  call TermWait(buf)
+
+  call VerifyScreenDump(buf, 'Test_wincolor_01', {})
+
+  " clean up
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_wincolor_listchars()
+  CheckScreendump
+  CheckFeature conceal
+
+  let lines =<< trim END
+	call setline(1, ["one","\t\tsome random text enough long to show 'extends' and 'precedes' includingnbsps, preceding tabs and trailing spaces    ","three"])
+	set wincolor=Todo
+	set nowrap cole=1 cocu+=n
+	set list lcs=eol:$,tab:>-,space:.,trail:_,extends:>,precedes:<,conceal:*,nbsp:#
+	call matchadd('Conceal', 'text')
+	normal 2G5zl
+  END
+  call writefile(lines, 'Xtest_wincolorlcs', 'D')
+  let buf = RunVimInTerminal('-S Xtest_wincolorlcs', {'rows': 8})
+
+  call VerifyScreenDump(buf, 'Test_wincolor_lcs', {})
+
+  " clean up
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_colorcolumn()
+  CheckScreendump
+
+  " check that setting 'colorcolumn' when entering a buffer works
+  let lines =<< trim END
+	split
+	edit X
+	call setline(1, ["1111111111","22222222222","3333333333"])
+	set nomodified
+	set colorcolumn=3,9
+	set number cursorline cursorlineopt=number
+	wincmd w
+	buf X
+  END
+  call writefile(lines, 'Xtest_colorcolumn', 'D')
+  let buf = RunVimInTerminal('-S Xtest_colorcolumn', {'rows': 10})
+  call term_sendkeys(buf, ":\<CR>")
+  call VerifyScreenDump(buf, 'Test_colorcolumn_1', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_colorcolumn_bri()
+  CheckScreendump
+
+  " check 'colorcolumn' when 'breakindent' is set
+  let lines =<< trim END
+	call setline(1, 'The quick brown fox jumped over the lazy dogs')
+  END
+  call writefile(lines, 'Xtest_colorcolumn_bri', 'D')
+  let buf = RunVimInTerminal('-S Xtest_colorcolumn_bri', {'rows': 10,'columns': 40})
+  call term_sendkeys(buf, ":set co=40 linebreak bri briopt=shift:2 cc=40,41,43\<CR>")
+  call VerifyScreenDump(buf, 'Test_colorcolumn_2', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_colorcolumn_sbr()
+  CheckScreendump
+
+  " check 'colorcolumn' when 'showbreak' is set
+  let lines =<< trim END
+	call setline(1, 'The quick brown fox jumped over the lazy dogs')
+  END
+  call writefile(lines, 'Xtest_colorcolumn_srb', 'D')
+  let buf = RunVimInTerminal('-S Xtest_colorcolumn_srb', {'rows': 10,'columns': 40})
+  call term_sendkeys(buf, ":set co=40 showbreak=+++>\\  cc=40,41,43\<CR>")
+  call VerifyScreenDump(buf, 'Test_colorcolumn_3', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+endfunc
+
+func Test_visual_sbr()
+  CheckScreendump
+
+  " check Visual highlight when 'showbreak' is set
+  let lines =<< trim END
+      set showbreak=>
+      call setline(1, 'Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.')
+      exe "normal! z1\<CR>"
+  END
+  call writefile(lines, 'Xtest_visual_sbr', 'D')
+  let buf = RunVimInTerminal('-S Xtest_visual_sbr', {'rows': 6,'columns': 60})
+
+  call term_sendkeys(buf, "v$")
+  call VerifyScreenDump(buf, 'Test_visual_sbr_1', {})
+
+  " clean up
+  call term_sendkeys(buf, "\<Esc>")
+  call StopVimInTerminal(buf)
+endfunc
+
+" This test must come before the Test_cursorline test, as it appears this
+" defines the Normal highlighting group anyway.
+func Test_1_highlight_Normalgroup_exists()
+  let hlNormal = HighlightArgs('Normal')
+  if !has('gui_running')
+    call assert_match('hi Normal\s*clear', hlNormal)
+  elseif has('gui_gtk2') || has('gui_gnome') || has('gui_gtk3')
+    " expect is DEFAULT_FONT of gui_gtk_x11.c
+    call assert_match('hi Normal\s*font=Monospace 10', hlNormal)
+  elseif has('gui_motif')
+    " expect is DEFAULT_FONT of gui_x11.c
+    call assert_match('hi Normal\s*font=7x13', hlNormal)
+  elseif has('win32')
+    " expect any font
+    call assert_match('hi Normal\s*font=.*', hlNormal)
+  endif
+endfunc
+
+" Do this test last, sometimes restoring the columns doesn't work
+func Test_z_no_space_before_xxx()
+  let l:org_columns = &columns
+  set columns=17
+  let l:hi_StatusLineTermNC = join(split(execute('hi StatusLineTermNC')))
+  call assert_match('StatusLineTermNC xxx', l:hi_StatusLineTermNC)
+  let &columns = l:org_columns
+endfunc
+
+" Test for :highlight command errors
+func Test_highlight_cmd_errors()
+  if has('gui_running')
+    " This test doesn't fail in the MS-Windows console version.
+    call assert_fails('hi Xcomment ctermbg=fg', 'E419:')
+    call assert_fails('hi Xcomment ctermfg=bg', 'E420:')
+    call assert_fails('hi Xcomment ctermfg=ul', 'E453:')
+    call assert_fails('hi ' .. repeat('a', 201) .. ' ctermfg=black', 'E1249:')
+  endif
+
+  " Try using a very long terminal code. Define a dummy terminal code for this
+  " test.
+  let &t_fo = "\<Esc>1;"
+  let c = repeat("t_fo,", 100) . "t_fo"
+  call assert_fails('exe "hi Xgroup1 start=" . c', 'E422:')
+  let &t_fo = ""
+endfunc
+
+" Test for 'highlight' option
+func Test_highlight_opt()
+  let save_hl = &highlight
+  call assert_fails('set highlight=j:b', 'E474:')
+  set highlight=f\ r
+  call assert_equal('f r', &highlight)
+  set highlight=fb
+  call assert_equal('fb', &highlight)
+  set highlight=fi
+  call assert_equal('fi', &highlight)
+  set highlight=f-
+  call assert_equal('f-', &highlight)
+  set highlight=fr
+  call assert_equal('fr', &highlight)
+  set highlight=fs
+  call assert_equal('fs', &highlight)
+  set highlight=fu
+  call assert_equal('fu', &highlight)
+  set highlight=fc
+  call assert_equal('fc', &highlight)
+  set highlight=ft
+  call assert_equal('ft', &highlight)
+  call assert_fails('set highlight=fr:Search', 'E474:')
+  set highlight=f:$#
+  call assert_match('W18:', v:statusmsg)
+  let &highlight = save_hl
+endfunc
+
+" Test for User group highlighting used in the statusline
+func Test_highlight_User()
+  CheckNotGui
+  hi User1 ctermfg=12
+  redraw!
+  call assert_equal('12', synIDattr(synIDtrans(hlID('User1')), 'fg'))
+  hi clear
+endfunc
+
+" Test for using RGB color values in a highlight group
+func Test_xxlast_highlight_RGB_color()
+  CheckCanRunGui
+  gui -f
+  hi MySearch guifg=#110000 guibg=#001100 guisp=#000011
+  call assert_equal('#110000', synIDattr(synIDtrans(hlID('MySearch')), 'fg#'))
+  call assert_equal('#001100', synIDattr(synIDtrans(hlID('MySearch')), 'bg#'))
+  call assert_equal('#000011', synIDattr(synIDtrans(hlID('MySearch')), 'sp#'))
+  hi clear
+endfunc
+
+" Test for using default highlighting group
+func Test_highlight_default()
+  highlight MySearch ctermfg=7
+  highlight default MySearch ctermfg=5
+  let hlSearch = HighlightArgs('MySearch')
+  call assert_match('ctermfg=7', hlSearch)
+
+  highlight default QFName ctermfg=3
+  call assert_match('ctermfg=3', HighlightArgs('QFName'))
+  hi clear
+endfunc
+
+" Test for 'ctermul in a highlight group
+func Test_highlight_ctermul()
+  CheckNotGui
+  call assert_notmatch('ctermul=', HighlightArgs('Normal'))
+  highlight Normal ctermul=3
+  call assert_match('ctermul=3', HighlightArgs('Normal'))
+  call assert_equal('3', synIDattr(synIDtrans(hlID('Normal')), 'ul'))
+  highlight Normal ctermul=NONE
+endfunc
+
+" Test for specifying 'start' and 'stop' in a highlight group
+func Test_highlight_start_stop()
+  hi HlGrp1 start=<Esc>[27h;<Esc>[<Space>r;
+  call assert_match("start=^[[27h;^[[ r;", HighlightArgs('HlGrp1'))
+  hi HlGrp1 start=NONE
+  call assert_notmatch("start=", HighlightArgs('HlGrp1'))
+  hi HlGrp2 stop=<Esc>[27h;<Esc>[<Space>r;
+  call assert_match("stop=^[[27h;^[[ r;", HighlightArgs('HlGrp2'))
+  hi HlGrp2 stop=NONE
+  call assert_notmatch("stop=", HighlightArgs('HlGrp2'))
+  set t_xy=^[foo;
+  set t_xz=^[bar;
+  hi HlGrp3 start=t_xy stop=t_xz
+  let d = hlget('HlGrp3')
+  call assert_equal('^[foo;', d[0].start)
+  call assert_equal('^[bar;', d[0].stop)
+  set t_xy= t_xz=
+  hi clear
+endfunc
+
+" Test for setting various 'term' attributes
+func Test_highlight_term_attr()
+  hi HlGrp3 term=bold,underline,undercurl,underdouble,underdotted,underdashed,strikethrough,reverse,italic,standout
+  call assert_equal('hi HlGrp3          term=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,strikethrough', HighlightArgs('HlGrp3'))
+  hi HlGrp3 term=NONE
+  call assert_equal('hi HlGrp3          cleared', HighlightArgs('HlGrp3'))
+  hi clear
+endfunc
+
+func Test_highlight_clear_restores_links()
+  let aaa_id = hlID('aaa')
+  call assert_equal(aaa_id, 0)
+
+  " create default link aaa --> bbb
+  hi def link aaa bbb
+  let id_aaa = hlID('aaa')
+  let hl_aaa_bbb = HighlightArgs('aaa')
+
+  " try to redefine default link aaa --> ccc; check aaa --> bbb
+  hi def link aaa ccc
+  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
+
+  " clear aaa; check aaa --> bbb
+  hi clear aaa
+  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
+
+  " link aaa --> ccc; clear aaa; check aaa --> bbb
+  hi link aaa ccc
+  let id_ccc = hlID('ccc')
+  call assert_equal(synIDtrans(id_aaa), id_ccc)
+  hi clear aaa
+  call assert_equal(HighlightArgs('aaa'), hl_aaa_bbb)
+
+  " forcibly set default link aaa --> ddd
+  hi! def link aaa ddd
+  let id_ddd = hlID('ddd')
+  let hl_aaa_ddd = HighlightArgs('aaa')
+  call assert_equal(synIDtrans(id_aaa), id_ddd)
+
+  " link aaa --> eee; clear aaa; check aaa --> ddd
+  hi link aaa eee
+  let eee_id = hlID('eee')
+  call assert_equal(synIDtrans(id_aaa), eee_id)
+  hi clear aaa
+  call assert_equal(HighlightArgs('aaa'), hl_aaa_ddd)
+endfunc
+
+func Test_highlight_clear_restores_context()
+  func FuncContextDefault()
+    hi def link Context ContextDefault
+  endfun
+
+  func FuncContextRelink()
+    " Dummy line
+    hi link Context ContextRelink
+  endfunc
+
+  let scriptContextDefault = MakeScript("FuncContextDefault")
+  let scriptContextRelink = MakeScript("FuncContextRelink")
+  let patContextDefault = fnamemodify(scriptContextDefault, ':t') .. ' line 1'
+  let patContextRelink = fnamemodify(scriptContextRelink, ':t') .. ' line 2'
+
+  exec 'source ' .. scriptContextDefault
+  let hlContextDefault = execute("verbose hi Context")
+  call assert_match(patContextDefault, hlContextDefault)
+
+  exec 'source ' .. scriptContextRelink
+  let hlContextRelink = execute("verbose hi Context")
+  call assert_match(patContextRelink, hlContextRelink)
+
+  hi clear
+  let hlContextAfterClear = execute("verbose hi Context")
+  call assert_match(patContextDefault, hlContextAfterClear)
+
+  delfunc FuncContextDefault
+  delfunc FuncContextRelink
+  call delete(scriptContextDefault)
+  call delete(scriptContextRelink)
+endfunc
+
+func Test_highlight_default_colorscheme_restores_links()
+  hi link TestLink Identifier
+  hi TestHi ctermbg=red
+
+  let hlTestLinkPre = HighlightArgs('TestLink')
+  let hlTestHiPre = HighlightArgs('TestHi')
+
+  " Test colorscheme
+  call assert_equal("\ndefault", execute('colorscheme'))
+  hi clear
+  if exists('syntax_on')
+    syntax reset
+  endif
+  let g:colors_name = 'test'
+  call assert_equal("\ntest", execute('colorscheme'))
+  hi link TestLink ErrorMsg
+  hi TestHi ctermbg=green
+
+  " Restore default highlighting
+  colorscheme default
+  " 'default' should work no matter if highlight group was cleared
+  call assert_equal("\ndefault", execute('colorscheme'))
+  hi def link TestLink Identifier
+  hi def TestHi ctermbg=red
+  let hlTestLinkPost = HighlightArgs('TestLink')
+  let hlTestHiPost = HighlightArgs('TestHi')
+  call assert_equal(hlTestLinkPre, hlTestLinkPost)
+  call assert_equal(hlTestHiPre, hlTestHiPost)
+  hi clear
+endfunc
+
+func Test_colornames_assignment_and_lookup()
+  CheckAnyOf Feature:gui_running Feature:termguicolors
+
+  " Ensure highlight command can find custom color.
+  let v:colornames['a redish white'] = '#ffeedd'
+  highlight Normal guifg='a redish white'
+  highlight clear
+  call ClearDict(v:colornames)
+endfunc
+
+func Test_colornames_default_list()
+  CheckAnyOf Feature:gui_running Feature:termguicolors
+
+  " Ensure default lists are loaded automatically and can be used for all gui fields.
+  call assert_equal(0, len(v:colornames))
+  highlight Normal guifg='rebecca purple' guibg='rebecca purple' guisp='rebecca purple'
+  call assert_notequal(0, len(v:colornames))
+  echo v:colornames['rebecca purple']
+  highlight clear
+  call ClearDict(v:colornames)
+endfunc
+
+func Test_colornames_overwrite_default()
+  CheckAnyOf Feature:gui_running Feature:termguicolors
+
+  " Ensure entries in v:colornames can be overwritten.
+  " Load default color scheme to trigger default color list loading.
+  colorscheme default
+  let old_rebecca_purple = v:colornames['rebecca purple']
+  highlight Normal guifg='rebecca purple' guibg='rebecca purple'
+  let v:colornames['rebecca purple'] = '#550099'
+  highlight Normal guifg='rebecca purple' guibg='rebecca purple'
+  let v:colornames['rebecca purple'] = old_rebecca_purple
+  highlight clear
+endfunc
+
+func Test_colornames_assignment_and_unassignment()
+  " No feature check is needed for this test because the v:colornames dict
+  " always exists with +eval. The feature checks are only required for
+  " commands that do color lookup.
+
+  " Ensure we cannot overwrite the v:colornames dict.
+  call assert_fails("let v:colornames = {}", 'E46:')
+
+  " Ensure we can delete entries from the v:colornames dict.
+  let v:colornames['x1'] = '#111111'
+  call assert_equal(v:colornames['x1'], '#111111')
+  unlet v:colornames['x1']
+  call assert_fails("echo v:colornames['x1']")
+endfunc
+
+" Test for the hlget() function
+func Test_hlget()
+  let lines =<< trim END
+    call assert_notequal([], filter(hlget(), 'v:val.name == "Visual"'))
+    call assert_equal([], hlget('SomeHLGroup'))
+    highlight MyHLGroup term=standout cterm=reverse ctermfg=10 ctermbg=Black
+    call assert_equal([{'id': hlID('MyHLGroup'), 'ctermfg': '10', 'name': 'MyHLGroup', 'term': {'standout': v:true}, 'ctermbg': '0', 'cterm': {'reverse': v:true}}], hlget('MyHLGroup'))
+    highlight clear MyHLGroup
+    call assert_equal(v:true, hlget('MyHLGroup')[0].cleared)
+    highlight link MyHLGroup IncSearch
+    call assert_equal('IncSearch', hlget('MyHLGroup')[0].linksto)
+    highlight clear MyHLGroup
+    call assert_equal([], hlget(test_null_string()))
+    call assert_equal([], hlget(""))
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for resolving highlight group links
+  let lines =<< trim END
+    highlight hlgA term=bold
+    VAR hlgAid = hlID('hlgA')
+    highlight link hlgB hlgA
+    VAR hlgBid = hlID('hlgB')
+    highlight link hlgC hlgB
+    VAR hlgCid = hlID('hlgC')
+    call assert_equal('hlgA', hlget('hlgB')[0].linksto)
+    call assert_equal('hlgB', hlget('hlgC')[0].linksto)
+    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
+                      \ 'term': {'bold': v:true}}], hlget('hlgA'))
+    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
+                      \ 'linksto': 'hlgA'}], hlget('hlgB'))
+    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
+                      \ 'linksto': 'hlgB'}], hlget('hlgC'))
+    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
+                      \ 'term': {'bold': v:true}}], hlget('hlgA', v:false))
+    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
+                      \ 'linksto': 'hlgA'}], hlget('hlgB', 0))
+    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
+                      \ 'linksto': 'hlgB'}], hlget('hlgC', v:false))
+    call assert_equal([{'id': hlgAid, 'name': 'hlgA',
+                      \ 'term': {'bold': v:true}}], hlget('hlgA', v:true))
+    call assert_equal([{'id': hlgBid, 'name': 'hlgB',
+                      \ 'term': {'bold': v:true}}], hlget('hlgB', 1))
+    call assert_equal([{'id': hlgCid, 'name': 'hlgC',
+                      \ 'term': {'bold': v:true}}], hlget('hlgC', v:true))
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  call assert_fails('call hlget([])', 'E1174:')
+  call assert_fails('call hlget("abc", "xyz")', 'E1212:')
+endfunc
+
+" Test for the hlset() function
+func Test_hlset()
+  let lines =<< trim END
+    call assert_equal(0, hlset(test_null_list()))
+    call assert_equal(0, hlset([]))
+    call assert_fails('call hlset(["Search"])', 'E715:')
+    call hlset(hlget())
+    call hlset([{'name': 'NewHLGroup', 'cterm': {'reverse': v:true}, 'ctermfg': '10'}])
+    call assert_equal({'reverse': v:true}, hlget('NewHLGroup')[0].cterm)
+    call hlset([{'name': 'NewHLGroup', 'cterm': {'bold': v:true}}])
+    call assert_equal({'bold': v:true}, hlget('NewHLGroup')[0].cterm)
+    call hlset([{'name': 'NewHLGroup', 'cleared': v:true}])
+    call assert_equal(v:true, hlget('NewHLGroup')[0].cleared)
+    call hlset([{'name': 'NewHLGroup', 'linksto': 'Search'}])
+    call assert_false(has_key(hlget('NewHLGroup')[0], 'cleared'))
+    call assert_equal('Search', hlget('NewHLGroup')[0].linksto)
+    call assert_fails("call hlset([{'name': [], 'ctermfg': '10'}])", 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'cleared': []}])",
+          \ 'E745:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'cterm': 'Blue'}])",
+          \ 'E715:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermbg': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermfg': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'ctermul': []}])",
+          \ 'E928:')
+    if has('gui')
+      call assert_fails("call hlset([{'name': 'NewHLGroup', 'font': []}])",
+            \ 'E928:')
+    endif
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'gui': 'Cyan'}])",
+          \ 'E715:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guibg': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guifg': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'guisp': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'linksto': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'start': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'stop': []}])",
+          \ 'E928:')
+    call assert_fails("call hlset([{'name': 'NewHLGroup', 'term': 'Cyan'}])",
+          \ 'E715:')
+    call assert_equal('Search', hlget('NewHLGroup')[0].linksto)
+    highlight clear NewHLGroup
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for clearing the 'term', 'cterm' and 'gui' attributes of a highlight
+  " group.
+  let lines =<< trim END
+    highlight myhlg1 term=bold cterm=italic gui=standout
+    VAR id = hlID('myhlg1')
+    call hlset([{'name': 'myhlg1', 'term': {}}])
+    call assert_equal([{'id': id, 'name': 'myhlg1',
+                \ 'cterm': {'italic': v:true}, 'gui': {'standout': v:true}}],
+                \ hlget('myhlg1'))
+    call hlset([{'name': 'myhlg1', 'cterm': {}}])
+    call assert_equal([{'id': id, 'name': 'myhlg1',
+                \ 'gui': {'standout': v:true}}], hlget('myhlg1'))
+    call hlset([{'name': 'myhlg1', 'gui': {}}])
+    call assert_equal([{'id': id, 'name': 'myhlg1', 'cleared': v:true}],
+                \ hlget('myhlg1'))
+    highlight clear myhlg1
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for setting all the 'term', 'cterm' and 'gui' attributes of a
+  " highlight group
+  let lines =<< trim END
+    VAR attr = {'bold': v:true, 'underline': v:true,
+                \ 'undercurl': v:true, 'underdouble': v:true,
+                \ 'underdotted': v:true, 'underdashed': v:true,
+                \ 'strikethrough': v:true, 'reverse': v:true, 'italic': v:true,
+                \ 'standout': v:true, 'nocombine': v:true}
+    call hlset([{'name': 'myhlg2', 'term': attr, 'cterm': attr, 'gui': attr}])
+    VAR id2 = hlID('myhlg2')
+    VAR expected = "myhlg2 xxx term=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough cterm=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough gui=bold,standout,underline,undercurl,underdouble,underdotted,underdashed,italic,reverse,nocombine,strikethrough"
+    VAR output = execute('highlight myhlg2')
+    LET output = output->split("\n")->join()->substitute('\s\+', ' ', 'g')
+    call assert_equal(expected, output)
+    call assert_equal([{'id': id2, 'name': 'myhlg2', 'gui': attr,
+                      \ 'term': attr, 'cterm': attr}], hlget('myhlg2'))
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for clearing some of the 'term', 'cterm' and 'gui' attributes of a
+  " highlight group
+  let lines =<< trim END
+    VAR attr = {'bold': v:false, 'underline': v:true, 'strikethrough': v:true}
+    call hlset([{'name': 'myhlg2', 'term': attr, 'cterm': attr, 'gui': attr}])
+    VAR id2 = hlID('myhlg2')
+    VAR expected = "myhlg2 xxx term=underline,strikethrough cterm=underline,strikethrough gui=underline,strikethrough"
+    VAR output = execute('highlight myhlg2')
+    LET output = output->split("\n")->join()->substitute('\s\+', ' ', 'g')
+    call assert_equal(expected, output)
+    LET attr = {'underline': v:true, 'strikethrough': v:true}
+    call assert_equal([{'id': id2, 'name': 'myhlg2', 'gui': attr,
+                      \ 'term': attr, 'cterm': attr}], hlget('myhlg2'))
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for clearing the attributes and link of a highlight group
+  let lines =<< trim END
+    highlight myhlg3 ctermbg=green guibg=green
+    highlight! default link myhlg3 ErrorMsg
+    VAR id3 = hlID('myhlg3')
+    call hlset([{'name': 'myhlg3', 'cleared': v:true, 'linksto': 'NONE'}])
+    call assert_equal([{'id': id3, 'name': 'myhlg3', 'cleared': v:true}],
+                      \ hlget('myhlg3'))
+    highlight clear hlg3
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for setting default attributes for a highlight group
+  let lines =<< trim END
+    call hlset([{'name': 'hlg4', 'ctermfg': '8'}])
+    call hlset([{'name': 'hlg4', 'default': v:true, 'ctermfg': '9'}])
+    VAR id4 = hlID('hlg4')
+    call assert_equal([{'id': id4, 'name': 'hlg4', 'ctermfg': '8'}],
+                    \ hlget('hlg4'))
+    highlight clear hlg4
+
+    call hlset([{'name': 'hlg5', 'default': v:true, 'ctermbg': '2'}])
+    call hlset([{'name': 'hlg5', 'ctermbg': '4'}])
+    VAR id5 = hlID('hlg5')
+    call assert_equal([{'id': id5, 'name': 'hlg5', 'ctermbg': '4'}],
+                    \ hlget('hlg5'))
+    highlight clear hlg5
+
+    call hlset([{'name': 'hlg6', 'linksto': 'Error'}])
+    VAR id6 = hlID('hlg6')
+    call hlset([{'name': 'hlg6', 'default': v:true, 'ctermbg': '2'}])
+    call assert_equal([{'id': id6, 'name': 'hlg6', 'linksto': 'Error'}],
+                    \ hlget('hlg6'))
+    highlight clear hlg6
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for setting default links for a highlight group
+  let lines =<< trim END
+    call hlset([{'name': 'hlg7', 'ctermfg': '5'}])
+    call hlset([{'name': 'hlg7', 'default': v:true, 'linksto': 'Search'}])
+    VAR id7 = hlID('hlg7')
+    call assert_equal([{'id': id7, 'name': 'hlg7', 'ctermfg': '5'}],
+                    \ hlget('hlg7'))
+    highlight clear hlg7
+
+    call hlset([{'name': 'hlg8', 'default': v:true, 'linksto': 'Search'}])
+    VAR id8 = hlID('hlg8')
+    call assert_equal([{'id': id8, 'name': 'hlg8', 'default': v:true,
+                    \ 'linksto': 'Search'}], hlget('hlg8'))
+    call hlset([{'name': 'hlg8', 'ctermbg': '2'}])
+    call assert_equal([{'id': id8, 'name': 'hlg8', 'ctermbg': '2'}],
+                    \ hlget('hlg8'))
+    highlight clear hlg8
+
+    highlight default link hlg9 ErrorMsg
+    VAR hlg_save = hlget('hlg9')
+    LET hlg_save[0]['name'] = 'hlg9dup'
+    call hlset(hlg_save)
+    VAR id9 = hlID('hlg9dup')
+    highlight clear hlg9dup
+    call assert_equal([{'id': id9, 'name': 'hlg9dup', 'default': v:true,
+                    \ 'linksto': 'ErrorMsg'}], hlget('hlg9dup'))
+    highlight clear hlg9
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for force creating a link to a highlight group
+  let lines =<< trim END
+    call hlset([{'name': 'hlg10', 'ctermfg': '8'}])
+    call hlset([{'name': 'hlg10', 'linksto': 'Search'}])
+    VAR id10 = hlID('hlg10')
+    call assert_equal([{'id': id10, 'name': 'hlg10', 'ctermfg': '8'}],
+                    \ hlget('hlg10'))
+    call hlset([{'name': 'hlg10', 'linksto': 'Search', 'force': v:true}])
+    call assert_equal([{'id': id10, 'name': 'hlg10', 'ctermfg': '8',
+                    \ 'linksto': 'Search'}], hlget('hlg10'))
+    highlight clear hlg10
+  END
+  call v9.CheckLegacyAndVim9Success(lines)
+
+  " Test for empty values of attributes
+  call hlset([{'name': 'hlg11', 'cterm': {}}])
+  call hlset([{'name': 'hlg11', 'ctermfg': ''}])
+  call hlset([{'name': 'hlg11', 'ctermbg': ''}])
+  call hlset([{'name': 'hlg11', 'ctermul': ''}])
+  call hlset([{'name': 'hlg11', 'font': ''}])
+  call hlset([{'name': 'hlg11', 'gui': {}}])
+  call hlset([{'name': 'hlg11', 'guifg': ''}])
+  call hlset([{'name': 'hlg11', 'guibg': ''}])
+  call hlset([{'name': 'hlg11', 'guisp': ''}])
+  call hlset([{'name': 'hlg11', 'start': ''}])
+  call hlset([{'name': 'hlg11', 'stop': ''}])
+  call hlset([{'name': 'hlg11', 'term': {}}])
+  call assert_true(hlget('hlg11')[0].cleared)
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab