Merge remote-tracking branch 'upstream/master' into aucmd_textputpostaucmd_textputpost

1 files changed, 0 insertions, 1304 deletions

diff --git a/src/nvim/testdir/test_options.vim b/src/nvim/testdir/test_options.vim
deleted file mode 100644
index f51de94bac..0000000000
--- a/src/nvim/testdir/test_options.vim
+++ /dev/null
@@ -1,1304 +0,0 @@
-" Test for options
-
-source check.vim
-source view_util.vim
-
-func Test_whichwrap()
-  set whichwrap=b,s
-  call assert_equal('b,s', &whichwrap)
-
-  set whichwrap+=h,l
-  call assert_equal('b,s,h,l', &whichwrap)
-
-  set whichwrap+=h,l
-  call assert_equal('b,s,h,l', &whichwrap)
-
-  set whichwrap+=h,l
-  call assert_equal('b,s,h,l', &whichwrap)
-
-  set whichwrap=h,h
-  call assert_equal('h', &whichwrap)
-
-  set whichwrap=h,h,h
-  call assert_equal('h', &whichwrap)
-
-  " For compatibility with Vim 3.0 and before, number values are also
-  " supported for 'whichwrap'
-  set whichwrap=1
-  call assert_equal('b', &whichwrap)
-  set whichwrap=2
-  call assert_equal('s', &whichwrap)
-  set whichwrap=4
-  call assert_equal('h,l', &whichwrap)
-  set whichwrap=8
-  call assert_equal('<,>', &whichwrap)
-  set whichwrap=16
-  call assert_equal('[,]', &whichwrap)
-  set whichwrap=31
-  call assert_equal('b,s,h,l,<,>,[,]', &whichwrap)
-
-  set whichwrap&
-endfunc
-
-func Test_isfname()
-  " This used to cause Vim to access uninitialized memory.
-  set isfname=
-  call assert_equal("~X", expand("~X"))
-  set isfname&
-endfunc
-
-" Test for getting the value of 'pastetoggle'
-func Test_pastetoggle()
-  " character with K_SPECIAL byte
-  let &pastetoggle = '…'
-  call assert_equal('…', &pastetoggle)
-  call assert_equal("\n  pastetoggle=…", execute('set pastetoggle?'))
-
-  " modified character with K_SPECIAL byte
-  let &pastetoggle = '<M-…>'
-  call assert_equal('<M-…>', &pastetoggle)
-  call assert_equal("\n  pastetoggle=<M-…>", execute('set pastetoggle?'))
-
-  " illegal bytes
-  let str = ":\x7f:\x80:\x90:\xd0:"
-  let &pastetoggle = str
-  call assert_equal(str, &pastetoggle)
-  call assert_equal("\n  pastetoggle=" .. strtrans(str), execute('set pastetoggle?'))
-
-  unlet str
-  set pastetoggle&
-endfunc
-
-func Test_wildchar()
-  " Empty 'wildchar' used to access invalid memory.
-  call assert_fails('set wildchar=', 'E521:')
-  call assert_fails('set wildchar=abc', 'E521:')
-  set wildchar=<Esc>
-  let a=execute('set wildchar?')
-  call assert_equal("\n  wildchar=<Esc>", a)
-  set wildchar=27
-  let a=execute('set wildchar?')
-  call assert_equal("\n  wildchar=<Esc>", a)
-  set wildchar&
-endfunc
-
-func Test_wildoptions()
-  set wildoptions=
-  set wildoptions+=tagfile
-  set wildoptions+=tagfile
-  call assert_equal('tagfile', &wildoptions)
-endfunc
-
-func Test_options_command()
-  let caught = 'ok'
-  try
-    options
-  catch
-    let caught = v:throwpoint . "\n" . v:exception
-  endtry
-  call assert_equal('ok', caught)
-
-  " Check if the option-window is opened horizontally.
-  wincmd j
-  call assert_notequal('option-window', bufname(''))
-  wincmd k
-  call assert_equal('option-window', bufname(''))
-  " close option-window
-  close
-
-  " Open the option-window vertically.
-  vert options
-  " Check if the option-window is opened vertically.
-  wincmd l
-  call assert_notequal('option-window', bufname(''))
-  wincmd h
-  call assert_equal('option-window', bufname(''))
-  " close option-window
-  close
-
-  " Open the option-window at the top.
-  set splitbelow
-  topleft options
-  call assert_equal(1, winnr())
-  close
-
-  " Open the option-window at the bottom.
-  set nosplitbelow
-  botright options
-  call assert_equal(winnr('$'), winnr())
-  close
-  set splitbelow&
-
-  " Open the option-window in a new tab.
-  tab options
-  " Check if the option-window is opened in a tab.
-  normal gT
-  call assert_notequal('option-window', bufname(''))
-  normal gt
-  call assert_equal('option-window', bufname(''))
-  " close option-window
-  close
-
-  " Open the options window browse
-  if has('browse')
-    browse set
-    call assert_equal('option-window', bufname(''))
-    close
-  endif
-endfunc
-
-func Test_path_keep_commas()
-  " Test that changing 'path' keeps two commas.
-  set path=foo,,bar
-  set path-=bar
-  set path+=bar
-  call assert_equal('foo,,bar', &path)
-
-  set path&
-endfunc
-
-func Test_path_too_long()
-  exe 'set path=' .. repeat('x', 10000)
-  call assert_fails('find x', 'E854:')
-  set path&
-endfunc
-
-func Test_signcolumn()
-  CheckFeature signs
-  call assert_equal("auto", &signcolumn)
-  set signcolumn=yes
-  set signcolumn=no
-  call assert_fails('set signcolumn=nope')
-endfunc
-
-func Test_filetype_valid()
-  set ft=valid_name
-  call assert_equal("valid_name", &filetype)
-  set ft=valid-name
-  call assert_equal("valid-name", &filetype)
-
-  call assert_fails(":set ft=wrong;name", "E474:")
-  call assert_fails(":set ft=wrong\\\\name", "E474:")
-  call assert_fails(":set ft=wrong\\|name", "E474:")
-  call assert_fails(":set ft=wrong/name", "E474:")
-  call assert_fails(":set ft=wrong\\\nname", "E474:")
-  call assert_equal("valid-name", &filetype)
-
-  exe "set ft=trunc\x00name"
-  call assert_equal("trunc", &filetype)
-endfunc
-
-func Test_syntax_valid()
-  if !has('syntax')
-    return
-  endif
-  set syn=valid_name
-  call assert_equal("valid_name", &syntax)
-  set syn=valid-name
-  call assert_equal("valid-name", &syntax)
-
-  call assert_fails(":set syn=wrong;name", "E474:")
-  call assert_fails(":set syn=wrong\\\\name", "E474:")
-  call assert_fails(":set syn=wrong\\|name", "E474:")
-  call assert_fails(":set syn=wrong/name", "E474:")
-  call assert_fails(":set syn=wrong\\\nname", "E474:")
-  call assert_equal("valid-name", &syntax)
-
-  exe "set syn=trunc\x00name"
-  call assert_equal("trunc", &syntax)
-endfunc
-
-func Test_keymap_valid()
-  if !has('keymap')
-    return
-  endif
-  call assert_fails(":set kmp=valid_name", "E544:")
-  call assert_fails(":set kmp=valid_name", "valid_name")
-  call assert_fails(":set kmp=valid-name", "E544:")
-  call assert_fails(":set kmp=valid-name", "valid-name")
-
-  call assert_fails(":set kmp=wrong;name", "E474:")
-  call assert_fails(":set kmp=wrong\\\\name", "E474:")
-  call assert_fails(":set kmp=wrong\\|name", "E474:")
-  call assert_fails(":set kmp=wrong/name", "E474:")
-  call assert_fails(":set kmp=wrong\\\nname", "E474:")
-
-  call assert_fails(":set kmp=trunc\x00name", "E544:")
-  call assert_fails(":set kmp=trunc\x00name", "trunc")
-endfunc
-
-func Check_dir_option(name)
-  " Check that it's possible to set the option.
-  exe 'set ' . a:name . '=/usr/share/dict/words'
-  call assert_equal('/usr/share/dict/words', eval('&' . a:name))
-  exe 'set ' . a:name . '=/usr/share/dict/words,/and/there'
-  call assert_equal('/usr/share/dict/words,/and/there', eval('&' . a:name))
-  exe 'set ' . a:name . '=/usr/share/dict\ words'
-  call assert_equal('/usr/share/dict words', eval('&' . a:name))
-
-  " Check rejecting weird characters.
-  call assert_fails("set " . a:name . "=/not&there", "E474:")
-  call assert_fails("set " . a:name . "=/not>there", "E474:")
-  call assert_fails("set " . a:name . "=/not.*there", "E474:")
-endfunc
-
-func Test_cinkeys()
-  " This used to cause invalid memory access
-  set cindent cinkeys=0
-  norm a
-  set cindent& cinkeys&
-endfunc
-
-func Test_dictionary()
-  call Check_dir_option('dictionary')
-endfunc
-
-func Test_thesaurus()
-  call Check_dir_option('thesaurus')
-endfun
-
-func Test_complete()
-  " Trailing single backslash used to cause invalid memory access.
-  set complete=s\
-  new
-  call feedkeys("i\<C-N>\<Esc>", 'xt')
-  bwipe!
-  call assert_fails('set complete=ix', 'E535:')
-  set complete&
-endfun
-
-func Test_set_completion()
-  call feedkeys(":set di\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set dictionary diff diffexpr diffopt digraph directory display', @:)
-
-  call feedkeys(":setlocal di\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"setlocal dictionary diff diffexpr diffopt digraph directory display', @:)
-
-  call feedkeys(":setglobal di\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"setglobal dictionary diff diffexpr diffopt digraph directory display', @:)
-
-  " Expand boolean options. When doing :set no<Tab>
-  " vim displays the options names without "no" but completion uses "no...".
-  call feedkeys(":set nodi\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set nodiff digraph', @:)
-
-  call feedkeys(":set invdi\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set invdiff digraph', @:)
-
-  " Expand abbreviation of options.
-  call feedkeys(":set ts\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set tabstop thesaurus thesaurusfunc', @:)
-
-  " Expand current value
-  call feedkeys(":set fileencodings=\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set fileencodings=ucs-bom,utf-8,default,latin1', @:)
-
-  call feedkeys(":set fileencodings:\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set fileencodings:ucs-bom,utf-8,default,latin1', @:)
-
-  " Expand key codes.
-  " call feedkeys(":set <H\<C-A>\<C-B>\"\<CR>", 'tx')
-  " call assert_equal('"set <Help> <Home>', @:)
-
-  " Expand terminal options.
-  " call feedkeys(":set t_A\<C-A>\<C-B>\"\<CR>", 'tx')
-  " call assert_equal('"set t_AB t_AF t_AU t_AL', @:)
-  " call assert_fails('call feedkeys(":set <t_afoo>=\<C-A>\<CR>", "xt")', 'E474:')
-
-  " Expand directories.
-  call feedkeys(":set cdpath=./\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_match('./samples/ ', @:)
-  call assert_notmatch('./small.vim ', @:)
-
-  " Expand files and directories.
-  call feedkeys(":set tags=./\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_match('./samples/ ./sautest/ ./screendump.vim ./script_util.vim ./setup.vim ./shared.vim', @:)
-
-  call feedkeys(":set tags=./\\\\ dif\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set tags=./\\ diff diffexpr diffopt', @:)
-
-  set tags&
-
-  " Expand values for 'filetype'
-  call feedkeys(":set filetype=sshdconfi\<Tab>\<C-B>\"\<CR>", 'xt')
-  call assert_equal('"set filetype=sshdconfig', @:)
-  call feedkeys(":set filetype=a\<C-A>\<C-B>\"\<CR>", 'xt')
-  call assert_equal('"set filetype=' .. getcompletion('a*', 'filetype')->join(), @:)
-endfunc
-
-func Test_set_errors()
-  call assert_fails('set scroll=-1', 'E49:')
-  call assert_fails('set backupcopy=', 'E474:')
-  call assert_fails('set regexpengine=3', 'E474:')
-  call assert_fails('set history=10001', 'E474:')
-  call assert_fails('set numberwidth=21', 'E474:')
-  call assert_fails('set colorcolumn=-a', 'E474:')
-  call assert_fails('set colorcolumn=a', 'E474:')
-  call assert_fails('set colorcolumn=1,', 'E474:')
-  call assert_fails('set colorcolumn=1;', 'E474:')
-  call assert_fails('set cmdheight=-1', 'E487:')
-  call assert_fails('set cmdwinheight=-1', 'E487:')
-  if has('conceal')
-    call assert_fails('set conceallevel=-1', 'E487:')
-    call assert_fails('set conceallevel=4', 'E474:')
-  endif
-  call assert_fails('set helpheight=-1', 'E487:')
-  call assert_fails('set history=-1', 'E487:')
-  call assert_fails('set report=-1', 'E487:')
-  call assert_fails('set shiftwidth=-1', 'E487:')
-  call assert_fails('set sidescroll=-1', 'E487:')
-  call assert_fails('set tabstop=-1', 'E487:')
-  call assert_fails('set tabstop=10000', 'E474:')
-  call assert_fails('let &tabstop = 10000', 'E474:')
-  call assert_fails('set tabstop=5500000000', 'E474:')
-  call assert_fails('set textwidth=-1', 'E487:')
-  call assert_fails('set timeoutlen=-1', 'E487:')
-  call assert_fails('set updatecount=-1', 'E487:')
-  call assert_fails('set updatetime=-1', 'E487:')
-  call assert_fails('set winheight=-1', 'E487:')
-  call assert_fails('set tabstop!', 'E488:')
-  call assert_fails('set xxx', 'E518:')
-  call assert_fails('set beautify?', 'E518:')
-  call assert_fails('set undolevels=x', 'E521:')
-  call assert_fails('set tabstop=', 'E521:')
-  call assert_fails('set comments=-', 'E524:')
-  call assert_fails('set comments=a', 'E525:')
-  call assert_fails('set foldmarker=x', 'E536:')
-  call assert_fails('set commentstring=x', 'E537:')
-  call assert_fails('let &commentstring = "x"', 'E537:')
-  call assert_fails('set complete=x', 'E539:')
-  call assert_fails('set rulerformat=%-', 'E539:')
-  call assert_fails('set rulerformat=%(', 'E542:')
-  call assert_fails('set rulerformat=%15(%%', 'E542:')
-  call assert_fails('set statusline=%$', 'E539:')
-  call assert_fails('set statusline=%{', 'E540:')
-  call assert_fails('set statusline=%{%', 'E540:')
-  call assert_fails('set statusline=%{%}', 'E539:')
-  call assert_fails('set statusline=%(', 'E542:')
-  call assert_fails('set statusline=%)', 'E542:')
-  call assert_fails('set tabline=%$', 'E539:')
-  call assert_fails('set tabline=%{', 'E540:')
-  call assert_fails('set tabline=%{%', 'E540:')
-  call assert_fails('set tabline=%{%}', 'E539:')
-  call assert_fails('set tabline=%(', 'E542:')
-  call assert_fails('set tabline=%)', 'E542:')
-
-  if has('cursorshape')
-    " This invalid value for 'guicursor' used to cause Vim to crash.
-    call assert_fails('set guicursor=i-ci,r-cr:h', 'E545:')
-    call assert_fails('set guicursor=i-ci', 'E545:')
-    call assert_fails('set guicursor=x', 'E545:')
-    call assert_fails('set guicursor=x:', 'E546:')
-    call assert_fails('set guicursor=r-cr:horx', 'E548:')
-    call assert_fails('set guicursor=r-cr:hor0', 'E549:')
-  endif
-  if has('mouseshape')
-    call assert_fails('se mouseshape=i-r:x', 'E547:')
-  endif
-  call assert_fails('set backupext=~ patchmode=~', 'E589:')
-  call assert_fails('set winminheight=10 winheight=9', 'E591:')
-  call assert_fails('set winminwidth=10 winwidth=9', 'E592:')
-  call assert_fails("set showbreak=\x01", 'E595:')
-  call assert_fails('set t_foo=', 'E846:')
-  call assert_fails('set tabstop??', 'E488:')
-  call assert_fails('set wrapscan!!', 'E488:')
-  call assert_fails('set tabstop&&', 'E488:')
-  call assert_fails('set wrapscan<<', 'E488:')
-  call assert_fails('set wrapscan=1', 'E474:')
-  call assert_fails('set autoindent@', 'E488:')
-  call assert_fails('set wildchar=<abc>', 'E474:')
-  call assert_fails('set cmdheight=1a', 'E521:')
-  call assert_fails('set invcmdheight', 'E474:')
-  if has('python') || has('python3')
-    call assert_fails('set pyxversion=6', 'E474:')
-  endif
-  call assert_fails("let &tabstop='ab'", 'E521:')
-  call assert_fails('set spellcapcheck=%\\(', 'E54:')
-  call assert_fails('set sessionoptions=curdir,sesdir', 'E474:')
-  call assert_fails('set foldmarker={{{,', 'E474:')
-  call assert_fails('set sessionoptions=sesdir,curdir', 'E474:')
-  setlocal listchars=trail:·
-  call assert_fails('set ambiwidth=double', 'E834:')
-  setlocal listchars=trail:-
-  setglobal listchars=trail:·
-  call assert_fails('set ambiwidth=double', 'E834:')
-  set listchars&
-  setlocal fillchars=stl:·
-  call assert_fails('set ambiwidth=double', 'E835:')
-  setlocal fillchars=stl:-
-  setglobal fillchars=stl:·
-  call assert_fails('set ambiwidth=double', 'E835:')
-  set fillchars&
-  call assert_fails('set fileencoding=latin1,utf-8', 'E474:')
-  set nomodifiable
-  call assert_fails('set fileencoding=latin1', 'E21:')
-  set modifiable&
-  " call assert_fails('set t_#-&', 'E522:')
-endfunc
-
-func CheckWasSet(name)
-  let verb_cm = execute('verbose set ' .. a:name .. '?')
-  call assert_match('Last set from.*test_options.vim', verb_cm)
-endfunc
-func CheckWasNotSet(name)
-  let verb_cm = execute('verbose set ' .. a:name .. '?')
-  call assert_notmatch('Last set from', verb_cm)
-endfunc
-
-" Must be executed before other tests that set 'term'.
-func Test_000_term_option_verbose()
-  throw "Skipped: Nvim does not support setting 'term'"
-  CheckNotGui
-
-  call CheckWasNotSet('t_cm')
-
-  let term_save = &term
-  set term=ansi
-  call CheckWasSet('t_cm')
-  let &term = term_save
-endfunc
-
-func Test_copy_context()
-  setlocal list
-  call CheckWasSet('list')
-  split
-  call CheckWasSet('list')
-  quit
-  setlocal nolist
-
-  set ai
-  call CheckWasSet('ai')
-  set filetype=perl
-  call CheckWasSet('filetype')
-  set fo=tcroq
-  call CheckWasSet('fo')
-
-  split Xsomebuf
-  call CheckWasSet('ai')
-  call CheckWasNotSet('filetype')
-  call CheckWasSet('fo')
-endfunc
-
-func Test_set_ttytype()
-  throw "Skipped: Nvim does not support 'ttytype'"
-  CheckUnix
-  CheckNotGui
-
-  " Setting 'ttytype' used to cause a double-free when exiting vim and
-  " when vim is compiled with -DEXITFREE.
-  set ttytype=ansi
-  call assert_equal('ansi', &ttytype)
-  call assert_equal(&ttytype, &term)
-  set ttytype=xterm
-  call assert_equal('xterm', &ttytype)
-  call assert_equal(&ttytype, &term)
-  try
-    set ttytype=
-    call assert_report('set ttytype= did not fail')
-  catch /E529/
-  endtry
-
-  " Some systems accept any terminal name and return dumb settings,
-  " check for failure of finding the entry and for missing 'cm' entry.
-  try
-    set ttytype=xxx
-    call assert_report('set ttytype=xxx did not fail')
-  catch /E522\|E437/
-  endtry
-
-  set ttytype&
-  call assert_equal(&ttytype, &term)
-
-  if has('gui') && !has('gui_running')
-    call assert_fails('set term=gui', 'E531:')
-  endif
-endfunc
-
-func Test_set_all()
-  set tw=75
-  set iskeyword=a-z,A-Z
-  set nosplitbelow
-  let out = execute('set all')
-  call assert_match('textwidth=75', out)
-  call assert_match('iskeyword=a-z,A-Z', out)
-  call assert_match('nosplitbelow', out)
-  set tw& iskeyword& splitbelow&
-endfunc
-
-func Test_set_one_column()
-  let out_mult = execute('set all')->split("\n")
-  let out_one = execute('set! all')->split("\n")
-  " one column should be two to four times as many lines
-  call assert_inrange(len(out_mult) * 2, len(out_mult) * 4, len(out_one))
-endfunc
-
-func Test_set_values()
-  " opt_test.vim is generated from ../optiondefs.h using gen_opt_test.vim
-  if filereadable('opt_test.vim')
-    source opt_test.vim
-  else
-    throw 'Skipped: opt_test.vim does not exist'
-  endif
-endfunc
-
-func Test_renderoptions()
-  throw 'skipped: Nvim does not support renderoptions'
-  " Only do this for Windows Vista and later, fails on Windows XP and earlier.
-  " Doesn't hurt to do this on a non-Windows system.
-  if windowsversion() !~ '^[345]\.'
-    set renderoptions=type:directx
-    set rop=type:directx
-  endif
-endfunc
-
-func ResetIndentexpr()
-  set indentexpr=
-endfunc
-
-func Test_set_indentexpr()
-  " this was causing usage of freed memory
-  set indentexpr=ResetIndentexpr()
-  new
-  call feedkeys("i\<c-f>", 'x')
-  call assert_equal('', &indentexpr)
-  bwipe!
-endfunc
-
-func Test_backupskip()
-  " Option 'backupskip' may contain several comma-separated path
-  " specifications if one or more of the environment variables TMPDIR, TMP,
-  " or TEMP is defined.  To simplify testing, convert the string value into a
-  " list.
-  let bsklist = split(&bsk, ',')
-
-  if has("mac")
-    let found = (index(bsklist, '/private/tmp/*') >= 0)
-    call assert_true(found, '/private/tmp not in option bsk: ' . &bsk)
-  elseif has("unix")
-    let found = (index(bsklist, '/tmp/*') >= 0)
-    call assert_true(found, '/tmp not in option bsk: ' . &bsk)
-  endif
-
-  " If our test platform is Windows, the path(s) in option bsk will use
-  " backslash for the path separator and the components could be in short
-  " (8.3) format.  As such, we need to replace the backslashes with forward
-  " slashes and convert the path components to long format.  The expand()
-  " function will do this but it cannot handle comma-separated paths.  This is
-  " why bsk was converted from a string into a list of strings above.
-  "
-  " One final complication is that the wildcard "/*" is at the end of each
-  " path and so expand() might return a list of matching files.  To prevent
-  " this, we need to remove the wildcard before calling expand() and then
-  " append it afterwards.
-  if has('win32')
-    let item_nbr = 0
-    while item_nbr < len(bsklist)
-      let path_spec = bsklist[item_nbr]
-      let path_spec = strcharpart(path_spec, 0, strlen(path_spec)-2)
-      let path_spec = substitute(expand(path_spec), '\\', '/', 'g')
-      let bsklist[item_nbr] = path_spec . '/*'
-      let item_nbr += 1
-    endwhile
-  endif
-
-  " Option bsk will also include these environment variables if defined.
-  " If they're defined, verify they appear in the option value.
-  for var in  ['$TMPDIR', '$TMP', '$TEMP']
-    if exists(var)
-      let varvalue = substitute(expand(var), '\\', '/', 'g')
-      let varvalue = substitute(varvalue, '/$', '', '')
-      let varvalue .= '/*'
-      let found = (index(bsklist, varvalue) >= 0)
-      call assert_true(found, var . ' (' . varvalue . ') not in option bsk: ' . &bsk)
-    endif
-  endfor
-
-  " Duplicates from environment variables should be filtered out (option has
-  " P_NODUP).  Run this in a separate instance and write v:errors in a file,
-  " so that we see what happens on startup.
-  let after =<< trim [CODE]
-      let bsklist = split(&backupskip, ',')
-      call assert_equal(uniq(copy(bsklist)), bsklist)
-      call writefile(['errors:'] + v:errors, 'Xtestout')
-      qall
-  [CODE]
-  call writefile(after, 'Xafter')
-  " let cmd = GetVimProg() . ' --not-a-term -S Xafter --cmd "set enc=utf8"'
-  let cmd = GetVimProg() . ' -S Xafter --cmd "set enc=utf8"'
-
-  let saveenv = {}
-  for var in ['TMPDIR', 'TMP', 'TEMP']
-    let saveenv[var] = getenv(var)
-    call setenv(var, '/duplicate/path')
-  endfor
-
-  exe 'silent !' . cmd
-  call assert_equal(['errors:'], readfile('Xtestout'))
-
-  " restore environment variables
-  for var in ['TMPDIR', 'TMP', 'TEMP']
-    call setenv(var, saveenv[var])
-  endfor
-
-  call delete('Xtestout')
-  call delete('Xafter')
-
-  " Duplicates should be filtered out (option has P_NODUP)
-  let backupskip = &backupskip
-  set backupskip=
-  set backupskip+=/test/dir
-  set backupskip+=/other/dir
-  set backupskip+=/test/dir
-  call assert_equal('/test/dir,/other/dir', &backupskip)
-  let &backupskip = backupskip
-endfunc
-
-func Test_copy_winopt()
-  set hidden
-
-  " Test copy option from current buffer in window
-  split
-  enew
-  setlocal numberwidth=5
-  wincmd w
-  call assert_equal(4,&numberwidth)
-  bnext
-  call assert_equal(5,&numberwidth)
-  bw!
-  call assert_equal(4,&numberwidth)
-
-  " Test copy value from window that used to be display the buffer
-  split
-  enew
-  setlocal numberwidth=6
-  bnext
-  wincmd w
-  call assert_equal(4,&numberwidth)
-  bnext
-  call assert_equal(6,&numberwidth)
-  bw!
-
-  " Test that if buffer is current, don't use the stale cached value
-  " from the last time the buffer was displayed.
-  split
-  enew
-  setlocal numberwidth=7
-  bnext
-  bnext
-  setlocal numberwidth=8
-  wincmd w
-  call assert_equal(4,&numberwidth)
-  bnext
-  call assert_equal(8,&numberwidth)
-  bw!
-
-  " Test value is not copied if window already has seen the buffer
-  enew
-  split
-  setlocal numberwidth=9
-  bnext
-  setlocal numberwidth=10
-  wincmd w
-  call assert_equal(4,&numberwidth)
-  bnext
-  call assert_equal(4,&numberwidth)
-  bw!
-
-  set hidden&
-endfunc
-
-func Test_shortmess_F()
-  new
-  call assert_match('\[No Name\]', execute('file'))
-  set shortmess+=F
-  call assert_match('\[No Name\]', execute('file'))
-  call assert_match('^\s*$', execute('file foo'))
-  call assert_match('foo', execute('file'))
-  set shortmess-=F
-  call assert_match('bar', execute('file bar'))
-  call assert_match('bar', execute('file'))
-  set shortmess&
-  bwipe
-endfunc
-
-func Test_shortmess_F2()
-  e file1
-  e file2
-  " Accommodate Nvim default.
-  set shortmess-=F
-  call assert_match('file1', execute('bn', ''))
-  call assert_match('file2', execute('bn', ''))
-  set shortmess+=F
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  set hidden
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  set nohidden
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  call assert_true(empty(execute('bn', '')))
-  " call assert_false(test_getvalue('need_fileinfo'))
-  " Accommodate Nvim default.
-  set shortmess-=F
-  call assert_match('file1', execute('bn', ''))
-  call assert_match('file2', execute('bn', ''))
-  bwipe
-  bwipe
-endfunc
-
-func Test_local_scrolloff()
-  set so=5
-  set siso=7
-  split
-  call assert_equal(5, &so)
-  setlocal so=3
-  call assert_equal(3, &so)
-  wincmd w
-  call assert_equal(5, &so)
-  wincmd w
-  setlocal so<
-  call assert_equal(5, &so)
-  setlocal so=0
-  call assert_equal(0, &so)
-  setlocal so=-1
-  call assert_equal(5, &so)
-
-  call assert_equal(7, &siso)
-  setlocal siso=3
-  call assert_equal(3, &siso)
-  wincmd w
-  call assert_equal(7, &siso)
-  wincmd w
-  setlocal siso<
-  call assert_equal(7, &siso)
-  setlocal siso=0
-  call assert_equal(0, &siso)
-  setlocal siso=-1
-  call assert_equal(7, &siso)
-
-  close
-  set so&
-  set siso&
-endfunc
-
-func Test_visualbell()
-  set belloff=
-  set visualbell
-  call assert_beeps('normal 0h')
-  set novisualbell
-  set belloff=all
-endfunc
-
-" Test for the 'write' option
-func Test_write()
-  new
-  call setline(1, ['L1'])
-  set nowrite
-  call assert_fails('write Xfile', 'E142:')
-  set write
-  close!
-endfunc
-
-" Test for 'buftype' option
-func Test_buftype()
-  new
-  call setline(1, ['L1'])
-  set buftype=nowrite
-  call assert_fails('write', 'E382:')
-
-  " for val in ['', 'nofile', 'nowrite', 'acwrite', 'quickfix', 'help', 'terminal', 'prompt', 'popup']
-  for val in ['', 'nofile', 'nowrite', 'acwrite', 'quickfix', 'help', 'prompt']
-    exe 'set buftype=' .. val
-    call writefile(['something'], 'XBuftype')
-    call assert_fails('write XBuftype', 'E13:', 'with buftype=' .. val)
-  endfor
-
-  call delete('XBuftype')
-  bwipe!
-endfunc
-
-" Test for the 'shell' option
-func Test_shell()
-  throw 'Skipped: Nvim does not have :shell'
-  CheckUnix
-  let save_shell = &shell
-  set shell=
-  let caught_e91 = 0
-  try
-    shell
-  catch /E91:/
-    let caught_e91 = 1
-  endtry
-  call assert_equal(1, caught_e91)
-  let &shell = save_shell
-endfunc
-
-" Test for the 'shellquote' option
-func Test_shellquote()
-  CheckUnix
-  set shellquote=#
-  set verbose=20
-  redir => v
-  silent! !echo Hello
-  redir END
-  set verbose&
-  set shellquote&
-  call assert_match(': "#echo Hello#"', v)
-endfunc
-
-" Test for the 'rightleftcmd' option
-func Test_rightleftcmd()
-  CheckFeature rightleft
-  set rightleft
-
-  let g:l = []
-  func AddPos()
-    call add(g:l, screencol())
-    return ''
-  endfunc
-  cmap <expr> <F2> AddPos()
-
-  set rightleftcmd=
-  call feedkeys("/\<F2>abc\<Right>\<F2>\<Left>\<Left>\<F2>" ..
-        \ "\<Right>\<F2>\<Esc>", 'xt')
-  call assert_equal([2, 5, 3, 4], g:l)
-
-  let g:l = []
-  set rightleftcmd=search
-  call feedkeys("/\<F2>abc\<Left>\<F2>\<Right>\<Right>\<F2>" ..
-        \ "\<Left>\<F2>\<Esc>", 'xt')
-  call assert_equal([&co - 1, &co - 4, &co - 2, &co - 3], g:l)
-
-  cunmap <F2>
-  unlet g:l
-  set rightleftcmd&
-  set rightleft&
-endfunc
-
-" Test for the 'debug' option
-func Test_debug_option()
-  " redraw to avoid matching previous messages
-  redraw
-  set debug=beep
-  exe "normal \<C-c>"
-  call assert_equal('Beep!', Screenline(&lines))
-  call assert_equal('line    4:', Screenline(&lines - 1))
-  " only match the final colon in the line that shows the source
-  call assert_match(':$', Screenline(&lines - 2))
-  set debug&
-endfunc
-
-" Test for the default CDPATH option
-func Test_opt_default_cdpath()
-  let after =<< trim [CODE]
-    call assert_equal(',/path/to/dir1,/path/to/dir2', &cdpath)
-    call writefile(v:errors, 'Xtestout')
-    qall
-  [CODE]
-  if has('unix')
-    let $CDPATH='/path/to/dir1:/path/to/dir2'
-  else
-    let $CDPATH='/path/to/dir1;/path/to/dir2'
-  endif
-  if RunVim([], after, '')
-    call assert_equal([], readfile('Xtestout'))
-    call delete('Xtestout')
-  endif
-endfunc
-
-" Test for setting keycodes using set
-func Test_opt_set_keycode()
-  call assert_fails('set <t_k1=l', 'E474:')
-  call assert_fails('set <Home=l', 'E474:')
-  set <t_k9>=abcd
-  " call assert_equal('abcd', &t_k9)
-  set <t_k9>&
-  set <F9>=xyz
-  " call assert_equal('xyz', &t_k9)
-  set <t_k9>&
-endfunc
-
-" Test for changing options in a sandbox
-func Test_opt_sandbox()
-  for opt in ['backupdir', 'cdpath', 'exrc']
-    call assert_fails('sandbox set ' .. opt .. '?', 'E48:')
-  endfor
-endfunc
-
-" Test for setting an option with local value to global value
-func Test_opt_local_to_global()
-  setglobal equalprg=gprg
-  setlocal equalprg=lprg
-  call assert_equal('gprg', &g:equalprg)
-  call assert_equal('lprg', &l:equalprg)
-  call assert_equal('lprg', &equalprg)
-  set equalprg<
-  call assert_equal('', &l:equalprg)
-  call assert_equal('gprg', &equalprg)
-  setglobal equalprg=gnewprg
-  setlocal equalprg=lnewprg
-  setlocal equalprg<
-  call assert_equal('gnewprg', &l:equalprg)
-  call assert_equal('gnewprg', &equalprg)
-  set equalprg&
-
-  " Test for setting the global/local value of a boolean option
-  setglobal autoread
-  setlocal noautoread
-  call assert_false(&autoread)
-  set autoread<
-  call assert_true(&autoread)
-  setglobal noautoread
-  setlocal autoread
-  setlocal autoread<
-  call assert_false(&autoread)
-  set autoread&
-endfunc
-
-func Test_set_in_sandbox()
-  " Some boolean options cannot be set in sandbox, some can.
-  call assert_fails('sandbox set modelineexpr', 'E48:')
-  sandbox set number
-  call assert_true(&number)
-  set number&
-
-  " Some boolean options cannot be set in sandbox, some can.
-  if has('python') || has('python3')
-    call assert_fails('sandbox set pyxversion=3', 'E48:')
-  endif
-  sandbox set tabstop=4
-  call assert_equal(4, &tabstop)
-  set tabstop&
-
-  " Some string options cannot be set in sandbox, some can.
-  call assert_fails('sandbox set backupdir=/tmp', 'E48:')
-  sandbox set filetype=perl
-  call assert_equal('perl', &filetype)
-  set filetype&
-endfunc
-
-" Test for incrementing, decrementing and multiplying a number option value
-func Test_opt_num_op()
-  set shiftwidth=4
-  set sw+=2
-  call assert_equal(6, &sw)
-  set sw-=2
-  call assert_equal(4, &sw)
-  set sw^=2
-  call assert_equal(8, &sw)
-  set shiftwidth&
-endfunc
-
-" Test for setting option values using v:false and v:true
-func Test_opt_boolean()
-  set number&
-  set number
-  call assert_equal(1, &nu)
-  set nonu
-  call assert_equal(0, &nu)
-  let &nu = v:true
-  call assert_equal(1, &nu)
-  let &nu = v:false
-  call assert_equal(0, &nu)
-  set number&
-endfunc
-
-" Test for the 'window' option
-func Test_window_opt()
-  " Needs only one open widow
-  %bw!
-  call setline(1, range(1, 8))
-  set window=5
-  exe "normal \<C-F>"
-  call assert_equal(4, line('w0'))
-  exe "normal \<C-F>"
-  call assert_equal(7, line('w0'))
-  exe "normal \<C-F>"
-  call assert_equal(8, line('w0'))
-  exe "normal \<C-B>"
-  call assert_equal(5, line('w0'))
-  exe "normal \<C-B>"
-  call assert_equal(2, line('w0'))
-  exe "normal \<C-B>"
-  call assert_equal(1, line('w0'))
-  set window=1
-  exe "normal gg\<C-F>"
-  call assert_equal(2, line('w0'))
-  exe "normal \<C-F>"
-  call assert_equal(3, line('w0'))
-  exe "normal \<C-B>"
-  call assert_equal(2, line('w0'))
-  exe "normal \<C-B>"
-  call assert_equal(1, line('w0'))
-  enew!
-  set window&
-endfunc
-
-" Test for the 'winminheight' option
-func Test_opt_winminheight()
-  only!
-  let &winheight = &lines + 4
-  call assert_fails('let &winminheight = &lines + 2', 'E36:')
-  call assert_true(&winminheight <= &lines)
-  set winminheight&
-  set winheight&
-endfunc
-
-func Test_opt_winminheight_term()
-  " See test/functional/legacy/options_spec.lua
-  CheckRunVimInTerminal
-
-  " The tabline should be taken into account.
-  let lines =<< trim END
-    set wmh=0 stal=2
-    below sp | wincmd _
-    below sp | wincmd _
-    below sp | wincmd _
-    below sp
-  END
-  call writefile(lines, 'Xwinminheight')
-  let buf = RunVimInTerminal('-S Xwinminheight', #{rows: 11})
-  call term_sendkeys(buf, ":set wmh=1\n")
-  call WaitForAssert({-> assert_match('E36: Not enough room', term_getline(buf, 11))})
-
-  call StopVimInTerminal(buf)
-  call delete('Xwinminheight')
-endfunc
-
-func Test_opt_winminheight_term_tabs()
-  " See test/functional/legacy/options_spec.lua
-  CheckRunVimInTerminal
-
-  " The tabline should be taken into account.
-  let lines =<< trim END
-    set wmh=0 stal=2
-    split
-    split
-    split
-    split
-    tabnew
-  END
-  call writefile(lines, 'Xwinminheight')
-  let buf = RunVimInTerminal('-S Xwinminheight', #{rows: 11})
-  call term_sendkeys(buf, ":set wmh=1\n")
-  call WaitForAssert({-> assert_match('E36: Not enough room', term_getline(buf, 11))})
-
-  call StopVimInTerminal(buf)
-  call delete('Xwinminheight')
-endfunc
-
-" Test for the 'winminwidth' option
-func Test_opt_winminwidth()
-  only!
-  let &winwidth = &columns + 4
-  call assert_fails('let &winminwidth = &columns + 2', 'E36:')
-  call assert_true(&winminwidth <= &columns)
-  set winminwidth&
-  set winwidth&
-endfunc
-
-" Test for setting option value containing spaces with isfname+=32
-func Test_isfname_with_options()
-  set isfname+=32
-  setlocal keywordprg=:term\ help.exe
-  call assert_equal(':term help.exe', &keywordprg)
-  set isfname&
-  setlocal keywordprg&
-endfunc
-
-" Test that resetting laststatus does change scroll option
-func Test_opt_reset_scroll()
-  " See test/functional/legacy/options_spec.lua
-  CheckRunVimInTerminal
-  let vimrc =<< trim [CODE]
-    set scroll=2
-    set laststatus=2
-  [CODE]
-  call writefile(vimrc, 'Xscroll')
-  let buf = RunVimInTerminal('-S Xscroll', {'rows': 16, 'cols': 45})
-  call term_sendkeys(buf, ":verbose set scroll?\n")
-  call WaitForAssert({-> assert_match('Last set.*window size', term_getline(buf, 15))})
-  call assert_match('^\s*scroll=7$', term_getline(buf, 14))
-  call StopVimInTerminal(buf)
-
-  " clean up
-  call delete('Xscroll')
-endfunc
-
-" Check that VIM_POSIX env variable influences default value of 'cpo' and 'shm'
-func Test_VIM_POSIX()
-  throw 'Skipped: Nvim does not support $VIM_POSIX'
-  let saved_VIM_POSIX = getenv("VIM_POSIX")
-
-  call setenv('VIM_POSIX', "1")
-  let after =<< trim [CODE]
-    call writefile([&cpo, &shm], 'X_VIM_POSIX')
-    qall
-  [CODE]
-  if RunVim([], after, '')
-    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>#{|&/\.;',
-          \            'AS'], readfile('X_VIM_POSIX'))
-  endif
-
-  call setenv('VIM_POSIX', v:null)
-  let after =<< trim [CODE]
-    call writefile([&cpo, &shm], 'X_VIM_POSIX')
-    qall
-  [CODE]
-  if RunVim([], after, '')
-    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>;',
-          \            'S'], readfile('X_VIM_POSIX'))
-  endif
-
-  call delete('X_VIM_POSIX')
-  call setenv('VIM_POSIX', saved_VIM_POSIX)
-endfunc
-
-" Test for setting an option to a Vi or Vim default
-func Test_opt_default()
-  throw 'Skipped: Nvim has different defaults'
-  set formatoptions&vi
-  call assert_equal('vt', &formatoptions)
-  set formatoptions&vim
-  call assert_equal('tcq', &formatoptions)
-endfunc
-
-" Test for the 'cmdheight' option
-func Test_cmdheight()
-  %bw!
-  let ht = &lines
-  set cmdheight=9999
-  call assert_equal(1, winheight(0))
-  call assert_equal(ht - 1, &cmdheight)
-  set cmdheight&
-endfunc
-
-" To specify a control character as a option value, '^' can be used
-func Test_opt_control_char()
-  set wildchar=^v
-  call assert_equal("\<C-V>", nr2char(&wildchar))
-  set wildcharm=^r
-  call assert_equal("\<C-R>", nr2char(&wildcharm))
-  " Bug: This doesn't work for the 'cedit' and 'termwinkey' options
-  set wildchar& wildcharm&
-endfunc
-
-" Test for the 'errorbells' option
-func Test_opt_errorbells()
-  set errorbells
-  call assert_beeps('s/a1b2/x1y2/')
-  set noerrorbells
-endfunc
-
-func Test_opt_scrolljump()
-  help
-  resize 10
-
-  " Test with positive 'scrolljump'.
-  set scrolljump=2
-  norm! Lj
-  call assert_equal({'lnum':11, 'leftcol':0, 'col':0, 'topfill':0,
-        \            'topline':3, 'coladd':0, 'skipcol':0, 'curswant':0},
-        \           winsaveview())
-
-  " Test with negative 'scrolljump' (percentage of window height).
-  set scrolljump=-40
-  norm! ggLj
-  call assert_equal({'lnum':11, 'leftcol':0, 'col':0, 'topfill':0,
-         \            'topline':5, 'coladd':0, 'skipcol':0, 'curswant':0},
-         \           winsaveview())
-
-  set scrolljump&
-  bw
-endfunc
-
-" Test for the 'cdhome' option
-func Test_opt_cdhome()
-  if has('unix') || has('vms')
-    throw 'Skipped: only works on non-Unix'
-  endif
-
-  set cdhome&
-  call assert_equal(0, &cdhome)
-  set cdhome
-
-  " This paragraph is copied from Test_cd_no_arg().
-  let path = getcwd()
-  cd
-  call assert_equal($HOME, getcwd())
-  call assert_notequal(path, getcwd())
-  exe 'cd ' .. fnameescape(path)
-  call assert_equal(path, getcwd())
-
-  set cdhome&
-endfunc
-
-func Test_set_completion_2()
-  CheckOption termguicolors
-
-  " Test default option completion
-  set wildoptions=
-  call feedkeys(":set termg\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set termguicolors', @:)
-
-  call feedkeys(":set notermg\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set notermguicolors', @:)
-
-  " Test fuzzy option completion
-  set wildoptions=fuzzy
-  call feedkeys(":set termg\<C-A>\<C-B>\"\<CR>", 'tx')
-  " Nvim doesn't have 'termencoding'
-  " call assert_equal('"set termguicolors termencoding', @:)
-  call assert_equal('"set termguicolors', @:)
-
-  call feedkeys(":set notermg\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_equal('"set notermguicolors', @:)
-
-  set wildoptions=
-endfunc
-
-func Test_switchbuf_reset()
-  set switchbuf=useopen
-  sblast
-  call assert_equal(1, winnr('$'))
-  set all&
-  " Nvim has a different default for 'switchbuf'
-  " call assert_equal('', &switchbuf)
-  call assert_equal('uselast', &switchbuf)
-  sblast
-  call assert_equal(2, winnr('$'))
-  only!
-endfunc
-
-" :set empty string for global 'keywordprg' falls back to ":help"
-func Test_keywordprg_empty()
-  let k = &keywordprg
-  set keywordprg=man
-  call assert_equal('man', &keywordprg)
-  set keywordprg=
-  call assert_equal(':help', &keywordprg)
-  set keywordprg=man
-  call assert_equal('man', &keywordprg)
-  call assert_equal("\n  keywordprg=:help", execute('set kp= kp?'))
-  let &keywordprg = k
-endfunc
-
-" check that the very first buffer created does not have 'endoffile' set
-func Test_endoffile_default()
-  let after =<< trim [CODE]
-    call writefile([execute('set eof?')], 'Xtestout')
-    qall!
-  [CODE]
-  if RunVim([], after, '')
-    call assert_equal(["\nnoendoffile"], readfile('Xtestout'))
-  endif
-  call delete('Xtestout')
-endfunc
-
-
-" vim: shiftwidth=2 sts=2 expandtab