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

1 files changed, 0 insertions, 2559 deletions

diff --git a/src/nvim/testdir/test_functions.vim b/src/nvim/testdir/test_functions.vim
deleted file mode 100644
index 500c30c76b..0000000000
--- a/src/nvim/testdir/test_functions.vim
+++ /dev/null
@@ -1,2559 +0,0 @@
-" Tests for various functions.
-
-source shared.vim
-source check.vim
-source term_util.vim
-source screendump.vim
-source vim9.vim
-
-" Must be done first, since the alternate buffer must be unset.
-func Test_00_bufexists()
-  call assert_equal(0, bufexists('does_not_exist'))
-  call assert_equal(1, bufexists(bufnr('%')))
-  call assert_equal(0, bufexists(0))
-  new Xfoo
-  let bn = bufnr('%')
-  call assert_equal(1, bufexists(bn))
-  call assert_equal(1, bufexists('Xfoo'))
-  call assert_equal(1, bufexists(getcwd() . '/Xfoo'))
-  call assert_equal(1, bufexists(0))
-  bw
-  call assert_equal(0, bufexists(bn))
-  call assert_equal(0, bufexists('Xfoo'))
-endfunc
-
-func Test_has()
-  throw 'Skipped: Nvim has removed some features'
-  call assert_equal(1, has('eval'))
-  call assert_equal(1, has('eval', 1))
-
-  if has('unix')
-    call assert_equal(1, or(has('ttyin'), 1))
-    call assert_equal(0, and(has('ttyout'), 0))
-    call assert_equal(1, has('multi_byte_encoding'))
-  endif
-  call assert_equal(1, has('vcon', 1))
-  call assert_equal(1, has('mouse_gpm_enabled', 1))
-
-  call assert_equal(0, has('nonexistent'))
-  call assert_equal(0, has('nonexistent', 1))
-
-  " Will we ever have patch 9999?
-  let ver = 'patch-' .. v:version / 100 .. '.' .. v:version % 100 .. '.9999'
-  call assert_equal(0, has(ver))
-endfunc
-
-func Test_empty()
-  call assert_equal(1, empty(''))
-  call assert_equal(0, empty('a'))
-
-  call assert_equal(1, empty(0))
-  call assert_equal(1, empty(-0))
-  call assert_equal(0, empty(1))
-  call assert_equal(0, empty(-1))
-
-  if has('float')
-    call assert_equal(1, empty(0.0))
-    call assert_equal(1, empty(-0.0))
-    call assert_equal(0, empty(1.0))
-    call assert_equal(0, empty(-1.0))
-    call assert_equal(0, empty(1.0/0.0))
-    call assert_equal(0, empty(0.0/0.0))
-  endif
-
-  call assert_equal(1, empty([]))
-  call assert_equal(0, empty(['a']))
-
-  call assert_equal(1, empty({}))
-  call assert_equal(0, empty({'a':1}))
-
-  call assert_equal(1, empty(v:null))
-  " call assert_equal(1, empty(v:none))
-  call assert_equal(1, empty(v:false))
-  call assert_equal(0, empty(v:true))
-
-  if has('channel')
-    call assert_equal(1, empty(test_null_channel()))
-  endif
-  if has('job')
-    call assert_equal(1, empty(test_null_job()))
-  endif
-
-  call assert_equal(0, empty(function('Test_empty')))
-  call assert_equal(0, empty(function('Test_empty', [0])))
-endfunc
-
-func Test_len()
-  call assert_equal(1, len(0))
-  call assert_equal(2, len(12))
-
-  call assert_equal(0, len(''))
-  call assert_equal(2, len('ab'))
-
-  call assert_equal(0, len([]))
-  call assert_equal(0, len(v:_null_list))
-  call assert_equal(2, len([2, 1]))
-
-  call assert_equal(0, len({}))
-  call assert_equal(0, len(v:_null_dict))
-  call assert_equal(2, len({'a': 1, 'b': 2}))
-
-  " call assert_fails('call len(v:none)', 'E701:')
-  call assert_fails('call len({-> 0})', 'E701:')
-endfunc
-
-func Test_max()
-  call assert_equal(0, max([]))
-  call assert_equal(2, max([2]))
-  call assert_equal(2, max([1, 2]))
-  call assert_equal(2, max([1, 2, v:null]))
-
-  call assert_equal(0, max({}))
-  call assert_equal(2, max({'a':1, 'b':2}))
-
-  call assert_fails('call max(1)', 'E712:')
-  " call assert_fails('call max(v:none)', 'E712:')
-
-  " check we only get one error
-  call assert_fails('call max([#{}, [1]])', ['E728:', 'E728:'])
-  call assert_fails('call max(#{a: {}, b: [1]})', ['E728:', 'E728:'])
-endfunc
-
-func Test_min()
-  call assert_equal(0, min([]))
-  call assert_equal(2, min([2]))
-  call assert_equal(1, min([1, 2]))
-  call assert_equal(0, min([1, 2, v:null]))
-
-  call assert_equal(0, min({}))
-  call assert_equal(1, min({'a':1, 'b':2}))
-
-  call assert_fails('call min(1)', 'E712:')
-  " call assert_fails('call min(v:none)', 'E712:')
-  call assert_fails('call min([1, {}])', 'E728:')
-
-  " check we only get one error
-  call assert_fails('call min([[1], #{}])', ['E745:', 'E745:'])
-  call assert_fails('call min(#{a: [1], b: #{}})', ['E745:', 'E745:'])
-endfunc
-
-func Test_strwidth()
-  for aw in ['single', 'double']
-    exe 'set ambiwidth=' . aw
-    call assert_equal(0, strwidth(''))
-    call assert_equal(1, strwidth("\t"))
-    call assert_equal(3, strwidth('Vim'))
-    call assert_equal(4, strwidth(1234))
-    call assert_equal(5, strwidth(-1234))
-
-    call assert_equal(2, strwidth('😉'))
-    call assert_equal(17, strwidth('Eĥoŝanĝo ĉiuĵaŭde'))
-    call assert_equal((aw == 'single') ? 6 : 7, strwidth('Straße'))
-
-    call assert_fails('call strwidth({->0})', 'E729:')
-    call assert_fails('call strwidth([])', 'E730:')
-    call assert_fails('call strwidth({})', 'E731:')
-    if has('float')
-      call assert_fails('call strwidth(1.2)', 'E806:')
-    endif
-  endfor
-
-  set ambiwidth&
-endfunc
-
-func Test_str2nr()
-  call assert_equal(0, str2nr(''))
-  call assert_equal(1, str2nr('1'))
-  call assert_equal(1, str2nr(' 1 '))
-
-  call assert_equal(1, str2nr('+1'))
-  call assert_equal(1, str2nr('+ 1'))
-  call assert_equal(1, str2nr(' + 1 '))
-
-  call assert_equal(-1, str2nr('-1'))
-  call assert_equal(-1, str2nr('- 1'))
-  call assert_equal(-1, str2nr(' - 1 '))
-
-  call assert_equal(123456789, str2nr('123456789'))
-  call assert_equal(-123456789, str2nr('-123456789'))
-
-  call assert_equal(5, str2nr('101', 2))
-  call assert_equal(5, '0b101'->str2nr(2))
-  call assert_equal(5, str2nr('0B101', 2))
-  call assert_equal(-5, str2nr('-101', 2))
-  call assert_equal(-5, str2nr('-0b101', 2))
-  call assert_equal(-5, str2nr('-0B101', 2))
-
-  call assert_equal(65, str2nr('101', 8))
-  call assert_equal(65, str2nr('0101', 8))
-  call assert_equal(-65, str2nr('-101', 8))
-  call assert_equal(-65, str2nr('-0101', 8))
-  call assert_equal(65, str2nr('0o101', 8))
-  call assert_equal(65, str2nr('0O0101', 8))
-  call assert_equal(-65, str2nr('-0O101', 8))
-  call assert_equal(-65, str2nr('-0o0101', 8))
-
-  call assert_equal(11259375, str2nr('abcdef', 16))
-  call assert_equal(11259375, str2nr('ABCDEF', 16))
-  call assert_equal(-11259375, str2nr('-ABCDEF', 16))
-  call assert_equal(11259375, str2nr('0xabcdef', 16))
-  call assert_equal(11259375, str2nr('0Xabcdef', 16))
-  call assert_equal(11259375, str2nr('0XABCDEF', 16))
-  call assert_equal(-11259375, str2nr('-0xABCDEF', 16))
-
-  call assert_equal(1, str2nr("1'000'000", 10, 0))
-  call assert_equal(256, str2nr("1'0000'0000", 2, 1))
-  call assert_equal(262144, str2nr("1'000'000", 8, 1))
-  call assert_equal(1000000, str2nr("1'000'000", 10, 1))
-  call assert_equal(1000, str2nr("1'000''000", 10, 1))
-  call assert_equal(65536, str2nr("1'00'00", 16, 1))
-
-  call assert_equal(0, str2nr('0x10'))
-  call assert_equal(0, str2nr('0b10'))
-  call assert_equal(0, str2nr('0o10'))
-  call assert_equal(1, str2nr('12', 2))
-  call assert_equal(1, str2nr('18', 8))
-  call assert_equal(1, str2nr('1g', 16))
-
-  call assert_equal(0, str2nr(v:null))
-  " call assert_equal(0, str2nr(v:none))
-
-  call assert_fails('call str2nr([])', 'E730:')
-  call assert_fails('call str2nr({->2})', 'E729:')
-  if has('float')
-    call assert_fails('call str2nr(1.2)', 'E806:')
-  endif
-  call assert_fails('call str2nr(10, [])', 'E745:')
-endfunc
-
-func Test_strftime()
-  CheckFunction strftime
-
-  " Format of strftime() depends on system. We assume
-  " that basic formats tested here are available and
-  " identical on all systems which support strftime().
-  "
-  " The 2nd parameter of strftime() is a local time, so the output day
-  " of strftime() can be 17 or 18, depending on timezone.
-  call assert_match('^2017-01-1[78]$', strftime('%Y-%m-%d', 1484695512))
-  "
-  call assert_match('^\d\d\d\d-\(0\d\|1[012]\)-\([012]\d\|3[01]\) \([01]\d\|2[0-3]\):[0-5]\d:\([0-5]\d\|60\)$', '%Y-%m-%d %H:%M:%S'->strftime())
-
-  call assert_fails('call strftime([])', 'E730:')
-  call assert_fails('call strftime("%Y", [])', 'E745:')
-
-  " Check that the time changes after we change the timezone
-  " Save previous timezone value, if any
-  if exists('$TZ')
-    let tz = $TZ
-  endif
-
-  " Force EST and then UTC, save the current hour (24-hour clock) for each
-  let $TZ = 'EST' | let est = strftime('%H')
-  let $TZ = 'UTC' | let utc = strftime('%H')
-
-  " Those hours should be two bytes long, and should not be the same; if they
-  " are, a tzset(3) call may have failed somewhere
-  call assert_equal(strlen(est), 2)
-  call assert_equal(strlen(utc), 2)
-  " TODO: this fails on MS-Windows
-  if has('unix')
-    call assert_notequal(est, utc)
-  endif
-
-  " If we cached a timezone value, put it back, otherwise clear it
-  if exists('tz')
-    let $TZ = tz
-  else
-    unlet $TZ
-  endif
-endfunc
-
-func Test_strptime()
-  CheckFunction strptime
-  CheckNotMSWindows
-
-  if exists('$TZ')
-    let tz = $TZ
-  endif
-  let $TZ = 'UTC'
-
-  call assert_equal(1484653763, strptime('%Y-%m-%d %T', '2017-01-17 11:49:23'))
-
-  " Force DST and check that it's considered
-  let $TZ = 'WINTER0SUMMER,J1,J365'
-  call assert_equal(1484653763 - 3600, strptime('%Y-%m-%d %T', '2017-01-17 11:49:23'))
-
-  call assert_fails('call strptime()', 'E119:')
-  call assert_fails('call strptime("xxx")', 'E119:')
-  call assert_equal(0, strptime("%Y", ''))
-  call assert_equal(0, strptime("%Y", "xxx"))
-
-  if exists('tz')
-    let $TZ = tz
-  else
-    unlet $TZ
-  endif
-endfunc
-
-func Test_resolve_unix()
-  if !has('unix')
-    return
-  endif
-
-  " Xlink1 -> Xlink2
-  " Xlink2 -> Xlink3
-  silent !ln -s -f Xlink2 Xlink1
-  silent !ln -s -f Xlink3 Xlink2
-  call assert_equal('Xlink3', resolve('Xlink1'))
-  call assert_equal('./Xlink3', resolve('./Xlink1'))
-  call assert_equal('Xlink3/', resolve('Xlink2/'))
-  " FIXME: these tests result in things like "Xlink2/" instead of "Xlink3/"?!
-  "call assert_equal('Xlink3/', resolve('Xlink1/'))
-  "call assert_equal('./Xlink3/', resolve('./Xlink1/'))
-  "call assert_equal(getcwd() . '/Xlink3/', resolve(getcwd() . '/Xlink1/'))
-  call assert_equal(getcwd() . '/Xlink3', resolve(getcwd() . '/Xlink1'))
-
-  " Test resolve() with a symlink cycle.
-  " Xlink1 -> Xlink2
-  " Xlink2 -> Xlink3
-  " Xlink3 -> Xlink1
-  silent !ln -s -f Xlink1 Xlink3
-  call assert_fails('call resolve("Xlink1")',   'E655:')
-  call assert_fails('call resolve("./Xlink1")', 'E655:')
-  call assert_fails('call resolve("Xlink2")',   'E655:')
-  call assert_fails('call resolve("Xlink3")',   'E655:')
-  call delete('Xlink1')
-  call delete('Xlink2')
-  call delete('Xlink3')
-
-  silent !ln -s -f Xdir//Xfile Xlink
-  call assert_equal('Xdir/Xfile', resolve('Xlink'))
-  call delete('Xlink')
-
-  silent !ln -s -f Xlink2/ Xlink1
-  call assert_equal('Xlink2', 'Xlink1'->resolve())
-  call assert_equal('Xlink2/', resolve('Xlink1/'))
-  call delete('Xlink1')
-
-  silent !ln -s -f ./Xlink2 Xlink1
-  call assert_equal('Xlink2', resolve('Xlink1'))
-  call assert_equal('./Xlink2', resolve('./Xlink1'))
-  call delete('Xlink1')
-
-  call assert_equal('/', resolve('/'))
-endfunc
-
-func s:normalize_fname(fname)
-  let ret = substitute(a:fname, '\', '/', 'g')
-  let ret = substitute(ret, '//', '/', 'g')
-  return ret->tolower()
-endfunc
-
-func Test_simplify()
-  call assert_equal('',            simplify(''))
-  call assert_equal('/',           simplify('/'))
-  call assert_equal('/',           simplify('/.'))
-  call assert_equal('/',           simplify('/..'))
-  call assert_equal('/...',        simplify('/...'))
-  call assert_equal('./dir/file',  './dir/file'->simplify())
-  call assert_equal('./dir/file',  simplify('.///dir//file'))
-  call assert_equal('./dir/file',  simplify('./dir/./file'))
-  call assert_equal('./file',      simplify('./dir/../file'))
-  call assert_equal('../dir/file', simplify('dir/../../dir/file'))
-  call assert_equal('./file',      simplify('dir/.././file'))
-  call assert_equal('../dir',      simplify('./../dir'))
-  call assert_equal('..',          simplify('../testdir/..'))
-  call mkdir('Xdir')
-  call assert_equal('.',           simplify('Xdir/../.'))
-  call delete('Xdir', 'd')
-
-  call assert_fails('call simplify({->0})', 'E729:')
-  call assert_fails('call simplify([])', 'E730:')
-  call assert_fails('call simplify({})', 'E731:')
-  if has('float')
-    call assert_fails('call simplify(1.2)', 'E806:')
-  endif
-endfunc
-
-func Test_pathshorten()
-  call assert_equal('', pathshorten(''))
-  call assert_equal('foo', pathshorten('foo'))
-  call assert_equal('/foo', '/foo'->pathshorten())
-  call assert_equal('f/', pathshorten('foo/'))
-  call assert_equal('f/bar', pathshorten('foo/bar'))
-  call assert_equal('f/b/foobar', 'foo/bar/foobar'->pathshorten())
-  call assert_equal('/f/b/foobar', pathshorten('/foo/bar/foobar'))
-  call assert_equal('.f/bar', pathshorten('.foo/bar'))
-  call assert_equal('~f/bar', pathshorten('~foo/bar'))
-  call assert_equal('~.f/bar', pathshorten('~.foo/bar'))
-  call assert_equal('.~f/bar', pathshorten('.~foo/bar'))
-  call assert_equal('~/f/bar', pathshorten('~/foo/bar'))
-  call assert_fails('call pathshorten([])', 'E730:')
-
-  " test pathshorten with optional variable to set preferred size of shortening
-  call assert_equal('', pathshorten('', 2))
-  call assert_equal('foo', pathshorten('foo', 2))
-  call assert_equal('/foo', pathshorten('/foo', 2))
-  call assert_equal('fo/', pathshorten('foo/', 2))
-  call assert_equal('fo/bar', pathshorten('foo/bar', 2))
-  call assert_equal('fo/ba/foobar', pathshorten('foo/bar/foobar', 2))
-  call assert_equal('/fo/ba/foobar', pathshorten('/foo/bar/foobar', 2))
-  call assert_equal('.fo/bar', pathshorten('.foo/bar', 2))
-  call assert_equal('~fo/bar', pathshorten('~foo/bar', 2))
-  call assert_equal('~.fo/bar', pathshorten('~.foo/bar', 2))
-  call assert_equal('.~fo/bar', pathshorten('.~foo/bar', 2))
-  call assert_equal('~/fo/bar', pathshorten('~/foo/bar', 2))
-  call assert_fails('call pathshorten([],2)', 'E730:')
-  call assert_notequal('~/fo/bar', pathshorten('~/foo/bar', 3))
-  call assert_equal('~/foo/bar', pathshorten('~/foo/bar', 3))
-  call assert_equal('~/f/bar', pathshorten('~/foo/bar', 0))
-endfunc
-
-func Test_strpart()
-  call assert_equal('de', strpart('abcdefg', 3, 2))
-  call assert_equal('ab', strpart('abcdefg', -2, 4))
-  call assert_equal('abcdefg', 'abcdefg'->strpart(-2))
-  call assert_equal('fg', strpart('abcdefg', 5, 4))
-  call assert_equal('defg', strpart('abcdefg', 3))
-  call assert_equal('', strpart('abcdefg', 10))
-  call assert_fails("let s=strpart('abcdef', [])", 'E745:')
-
-  call assert_equal('lép', strpart('éléphant', 2, 4))
-  call assert_equal('léphant', strpart('éléphant', 2))
-
-  call assert_equal('é', strpart('éléphant', 0, 1, 1))
-  call assert_equal('ép', strpart('éléphant', 3, 2, v:true))
-  call assert_equal('ó', strpart('cómposed', 1, 1, 1))
-endfunc
-
-func Test_tolower()
-  call assert_equal("", tolower(""))
-
-  " Test with all printable ASCII characters.
-  call assert_equal(' !"#$%&''()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\]^_`abcdefghijklmnopqrstuvwxyz{|}~',
-          \ tolower(' !"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~'))
-
-  " Test with a few uppercase diacritics.
-  call assert_equal("aàáâãäåāăąǎǟǡả", tolower("AÀÁÂÃÄÅĀĂĄǍǞǠẢ"))
-  call assert_equal("bḃḇ", tolower("BḂḆ"))
-  call assert_equal("cçćĉċč", tolower("CÇĆĈĊČ"))
-  call assert_equal("dďđḋḏḑ", tolower("DĎĐḊḎḐ"))
-  call assert_equal("eèéêëēĕėęěẻẽ", tolower("EÈÉÊËĒĔĖĘĚẺẼ"))
-  call assert_equal("fḟ ", tolower("FḞ "))
-  call assert_equal("gĝğġģǥǧǵḡ", tolower("GĜĞĠĢǤǦǴḠ"))
-  call assert_equal("hĥħḣḧḩ", tolower("HĤĦḢḦḨ"))
-  call assert_equal("iìíîïĩīĭįiǐỉ", tolower("IÌÍÎÏĨĪĬĮİǏỈ"))
-  call assert_equal("jĵ", tolower("JĴ"))
-  call assert_equal("kķǩḱḵ", tolower("KĶǨḰḴ"))
-  call assert_equal("lĺļľŀłḻ", tolower("LĹĻĽĿŁḺ"))
-  call assert_equal("mḿṁ", tolower("MḾṀ"))
-  call assert_equal("nñńņňṅṉ", tolower("NÑŃŅŇṄṈ"))
-  call assert_equal("oòóôõöøōŏőơǒǫǭỏ", tolower("OÒÓÔÕÖØŌŎŐƠǑǪǬỎ"))
-  call assert_equal("pṕṗ", tolower("PṔṖ"))
-  call assert_equal("q", tolower("Q"))
-  call assert_equal("rŕŗřṙṟ", tolower("RŔŖŘṘṞ"))
-  call assert_equal("sśŝşšṡ", tolower("SŚŜŞŠṠ"))
-  call assert_equal("tţťŧṫṯ", tolower("TŢŤŦṪṮ"))
-  call assert_equal("uùúûüũūŭůűųưǔủ", tolower("UÙÚÛÜŨŪŬŮŰŲƯǓỦ"))
-  call assert_equal("vṽ", tolower("VṼ"))
-  call assert_equal("wŵẁẃẅẇ", tolower("WŴẀẂẄẆ"))
-  call assert_equal("xẋẍ", tolower("XẊẌ"))
-  call assert_equal("yýŷÿẏỳỷỹ", tolower("YÝŶŸẎỲỶỸ"))
-  call assert_equal("zźżžƶẑẕ", tolower("ZŹŻŽƵẐẔ"))
-
-  " Test with a few lowercase diacritics, which should remain unchanged.
-  call assert_equal("aàáâãäåāăąǎǟǡả", tolower("aàáâãäåāăąǎǟǡả"))
-  call assert_equal("bḃḇ", tolower("bḃḇ"))
-  call assert_equal("cçćĉċč", tolower("cçćĉċč"))
-  call assert_equal("dďđḋḏḑ", tolower("dďđḋḏḑ"))
-  call assert_equal("eèéêëēĕėęěẻẽ", tolower("eèéêëēĕėęěẻẽ"))
-  call assert_equal("fḟ", tolower("fḟ"))
-  call assert_equal("gĝğġģǥǧǵḡ", tolower("gĝğġģǥǧǵḡ"))
-  call assert_equal("hĥħḣḧḩẖ", tolower("hĥħḣḧḩẖ"))
-  call assert_equal("iìíîïĩīĭįǐỉ", tolower("iìíîïĩīĭįǐỉ"))
-  call assert_equal("jĵǰ", tolower("jĵǰ"))
-  call assert_equal("kķǩḱḵ", tolower("kķǩḱḵ"))
-  call assert_equal("lĺļľŀłḻ", tolower("lĺļľŀłḻ"))
-  call assert_equal("mḿṁ ", tolower("mḿṁ "))
-  call assert_equal("nñńņňʼnṅṉ", tolower("nñńņňʼnṅṉ"))
-  call assert_equal("oòóôõöøōŏőơǒǫǭỏ", tolower("oòóôõöøōŏőơǒǫǭỏ"))
-  call assert_equal("pṕṗ", tolower("pṕṗ"))
-  call assert_equal("q", tolower("q"))
-  call assert_equal("rŕŗřṙṟ", tolower("rŕŗřṙṟ"))
-  call assert_equal("sśŝşšṡ", tolower("sśŝşšṡ"))
-  call assert_equal("tţťŧṫṯẗ", tolower("tţťŧṫṯẗ"))
-  call assert_equal("uùúûüũūŭůűųưǔủ", tolower("uùúûüũūŭůűųưǔủ"))
-  call assert_equal("vṽ", tolower("vṽ"))
-  call assert_equal("wŵẁẃẅẇẘ", tolower("wŵẁẃẅẇẘ"))
-  call assert_equal("ẋẍ", tolower("ẋẍ"))
-  call assert_equal("yýÿŷẏẙỳỷỹ", tolower("yýÿŷẏẙỳỷỹ"))
-  call assert_equal("zźżžƶẑẕ", tolower("zźżžƶẑẕ"))
-
-  " According to https://twitter.com/jifa/status/625776454479970304
-  " Ⱥ (U+023A) and Ⱦ (U+023E) are the *only* code points to increase
-  " in length (2 to 3 bytes) when lowercased. So let's test them.
-  call assert_equal("ⱥ ⱦ", tolower("Ⱥ Ⱦ"))
-
-  " This call to tolower with invalid utf8 sequence used to cause access to
-  " invalid memory.
-  call tolower("\xC0\x80\xC0")
-  call tolower("123\xC0\x80\xC0")
-
-  " Test in latin1 encoding
-  let save_enc = &encoding
-  " set encoding=latin1
-  call assert_equal("abc", tolower("ABC"))
-  let &encoding = save_enc
-endfunc
-
-func Test_toupper()
-  call assert_equal("", toupper(""))
-
-  " Test with all printable ASCII characters.
-  call assert_equal(' !"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~',
-          \ toupper(' !"#$%&''()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~'))
-
-  " Test with a few lowercase diacritics.
-  call assert_equal("AÀÁÂÃÄÅĀĂĄǍǞǠẢ", "aàáâãäåāăąǎǟǡả"->toupper())
-  call assert_equal("BḂḆ", toupper("bḃḇ"))
-  call assert_equal("CÇĆĈĊČ", toupper("cçćĉċč"))
-  call assert_equal("DĎĐḊḎḐ", toupper("dďđḋḏḑ"))
-  call assert_equal("EÈÉÊËĒĔĖĘĚẺẼ", toupper("eèéêëēĕėęěẻẽ"))
-  call assert_equal("FḞ", toupper("fḟ"))
-  call assert_equal("GĜĞĠĢǤǦǴḠ", toupper("gĝğġģǥǧǵḡ"))
-  call assert_equal("HĤĦḢḦḨẖ", toupper("hĥħḣḧḩẖ"))
-  call assert_equal("IÌÍÎÏĨĪĬĮǏỈ", toupper("iìíîïĩīĭįǐỉ"))
-  call assert_equal("JĴǰ", toupper("jĵǰ"))
-  call assert_equal("KĶǨḰḴ", toupper("kķǩḱḵ"))
-  call assert_equal("LĹĻĽĿŁḺ", toupper("lĺļľŀłḻ"))
-  call assert_equal("MḾṀ ", toupper("mḿṁ "))
-  call assert_equal("NÑŃŅŇʼnṄṈ", toupper("nñńņňʼnṅṉ"))
-  call assert_equal("OÒÓÔÕÖØŌŎŐƠǑǪǬỎ", toupper("oòóôõöøōŏőơǒǫǭỏ"))
-  call assert_equal("PṔṖ", toupper("pṕṗ"))
-  call assert_equal("Q", toupper("q"))
-  call assert_equal("RŔŖŘṘṞ", toupper("rŕŗřṙṟ"))
-  call assert_equal("SŚŜŞŠṠ", toupper("sśŝşšṡ"))
-  call assert_equal("TŢŤŦṪṮẗ", toupper("tţťŧṫṯẗ"))
-  call assert_equal("UÙÚÛÜŨŪŬŮŰŲƯǓỦ", toupper("uùúûüũūŭůűųưǔủ"))
-  call assert_equal("VṼ", toupper("vṽ"))
-  call assert_equal("WŴẀẂẄẆẘ", toupper("wŵẁẃẅẇẘ"))
-  call assert_equal("ẊẌ", toupper("ẋẍ"))
-  call assert_equal("YÝŸŶẎẙỲỶỸ", toupper("yýÿŷẏẙỳỷỹ"))
-  call assert_equal("ZŹŻŽƵẐẔ", toupper("zźżžƶẑẕ"))
-
-  " Test that uppercase diacritics, which should remain unchanged.
-  call assert_equal("AÀÁÂÃÄÅĀĂĄǍǞǠẢ", toupper("AÀÁÂÃÄÅĀĂĄǍǞǠẢ"))
-  call assert_equal("BḂḆ", toupper("BḂḆ"))
-  call assert_equal("CÇĆĈĊČ", toupper("CÇĆĈĊČ"))
-  call assert_equal("DĎĐḊḎḐ", toupper("DĎĐḊḎḐ"))
-  call assert_equal("EÈÉÊËĒĔĖĘĚẺẼ", toupper("EÈÉÊËĒĔĖĘĚẺẼ"))
-  call assert_equal("FḞ ", toupper("FḞ "))
-  call assert_equal("GĜĞĠĢǤǦǴḠ", toupper("GĜĞĠĢǤǦǴḠ"))
-  call assert_equal("HĤĦḢḦḨ", toupper("HĤĦḢḦḨ"))
-  call assert_equal("IÌÍÎÏĨĪĬĮİǏỈ", toupper("IÌÍÎÏĨĪĬĮİǏỈ"))
-  call assert_equal("JĴ", toupper("JĴ"))
-  call assert_equal("KĶǨḰḴ", toupper("KĶǨḰḴ"))
-  call assert_equal("LĹĻĽĿŁḺ", toupper("LĹĻĽĿŁḺ"))
-  call assert_equal("MḾṀ", toupper("MḾṀ"))
-  call assert_equal("NÑŃŅŇṄṈ", toupper("NÑŃŅŇṄṈ"))
-  call assert_equal("OÒÓÔÕÖØŌŎŐƠǑǪǬỎ", toupper("OÒÓÔÕÖØŌŎŐƠǑǪǬỎ"))
-  call assert_equal("PṔṖ", toupper("PṔṖ"))
-  call assert_equal("Q", toupper("Q"))
-  call assert_equal("RŔŖŘṘṞ", toupper("RŔŖŘṘṞ"))
-  call assert_equal("SŚŜŞŠṠ", toupper("SŚŜŞŠṠ"))
-  call assert_equal("TŢŤŦṪṮ", toupper("TŢŤŦṪṮ"))
-  call assert_equal("UÙÚÛÜŨŪŬŮŰŲƯǓỦ", toupper("UÙÚÛÜŨŪŬŮŰŲƯǓỦ"))
-  call assert_equal("VṼ", toupper("VṼ"))
-  call assert_equal("WŴẀẂẄẆ", toupper("WŴẀẂẄẆ"))
-  call assert_equal("XẊẌ", toupper("XẊẌ"))
-  call assert_equal("YÝŶŸẎỲỶỸ", toupper("YÝŶŸẎỲỶỸ"))
-  call assert_equal("ZŹŻŽƵẐẔ", toupper("ZŹŻŽƵẐẔ"))
-
-  call assert_equal("Ⱥ Ⱦ", toupper("ⱥ ⱦ"))
-
-  " This call to toupper with invalid utf8 sequence used to cause access to
-  " invalid memory.
-  call toupper("\xC0\x80\xC0")
-  call toupper("123\xC0\x80\xC0")
-
-  " Test in latin1 encoding
-  let save_enc = &encoding
-  " set encoding=latin1
-  call assert_equal("ABC", toupper("abc"))
-  let &encoding = save_enc
-endfunc
-
-func Test_tr()
-  call assert_equal('foo', tr('bar', 'bar', 'foo'))
-  call assert_equal('zxy', 'cab'->tr('abc', 'xyz'))
-  call assert_fails("let s=tr([], 'abc', 'def')", 'E730:')
-  call assert_fails("let s=tr('abc', [], 'def')", 'E730:')
-  call assert_fails("let s=tr('abc', 'abc', [])", 'E730:')
-  call assert_fails("let s=tr('abcd', 'abcd', 'def')", 'E475:')
-  " set encoding=latin1
-  call assert_fails("let s=tr('abcd', 'abcd', 'def')", 'E475:')
-  call assert_equal('hEllO', tr('hello', 'eo', 'EO'))
-  call assert_equal('hello', tr('hello', 'xy', 'ab'))
-  call assert_fails('call tr("abc", "123", "₁₂")', 'E475:')
-  set encoding=utf8
-endfunc
-
-" Tests for the mode() function
-let current_modes = ''
-func Save_mode()
-  let g:current_modes = mode(0) . '-' . mode(1)
-  return ''
-endfunc
-
-" Test for the mode() function
-func Test_mode()
-  new
-  call append(0, ["Blue Ball Black", "Brown Band Bowl", ""])
-
-  " Only complete from the current buffer.
-  set complete=.
-
-  inoremap <F2> <C-R>=Save_mode()<CR>
-  xnoremap <F2> <Cmd>call Save_mode()<CR>
-
-  normal! 3G
-  exe "normal i\<F2>\<Esc>"
-  call assert_equal('i-i', g:current_modes)
-  " i_CTRL-P: Multiple matches
-  exe "normal i\<C-G>uBa\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-P: Single match
-  exe "normal iBro\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X
-  exe "normal iBa\<C-X>\<F2>\<Esc>u"
-  call assert_equal('i-ix', g:current_modes)
-  " i_CTRL-X CTRL-P: Multiple matches
-  exe "normal iBa\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-P: Single match
-  exe "normal iBro\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-P + CTRL-P: Single match
-  exe "normal iBro\<C-X>\<C-P>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-L: Multiple matches
-  exe "normal i\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-L: Single match
-  exe "normal iBlu\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-P: No match
-  exe "normal iCom\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-P: No match
-  exe "normal iCom\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-  " i_CTRL-X CTRL-L: No match
-  exe "normal iabc\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('i-ic', g:current_modes)
-
-  exe "normal R\<F2>\<Esc>"
-  call assert_equal('R-R', g:current_modes)
-  " R_CTRL-P: Multiple matches
-  exe "normal RBa\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-P: Single match
-  exe "normal RBro\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X
-  exe "normal RBa\<C-X>\<F2>\<Esc>u"
-  call assert_equal('R-Rx', g:current_modes)
-  " R_CTRL-X CTRL-P: Multiple matches
-  exe "normal RBa\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-P: Single match
-  exe "normal RBro\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-P + CTRL-P: Single match
-  exe "normal RBro\<C-X>\<C-P>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-L: Multiple matches
-  exe "normal R\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-L: Single match
-  exe "normal RBlu\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-P: No match
-  exe "normal RCom\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-P: No match
-  exe "normal RCom\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-  " R_CTRL-X CTRL-L: No match
-  exe "normal Rabc\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rc', g:current_modes)
-
-  exe "normal gR\<F2>\<Esc>"
-  call assert_equal('R-Rv', g:current_modes)
-  " gR_CTRL-P: Multiple matches
-  exe "normal gRBa\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-P: Single match
-  exe "normal gRBro\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X
-  exe "normal gRBa\<C-X>\<F2>\<Esc>u"
-  call assert_equal('R-Rvx', g:current_modes)
-  " gR_CTRL-X CTRL-P: Multiple matches
-  exe "normal gRBa\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-P: Single match
-  exe "normal gRBro\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-P + CTRL-P: Single match
-  exe "normal gRBro\<C-X>\<C-P>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-L: Multiple matches
-  exe "normal gR\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-L: Single match
-  exe "normal gRBlu\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-P: No match
-  exe "normal gRCom\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-P: No match
-  exe "normal gRCom\<C-X>\<C-P>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-  " gR_CTRL-X CTRL-L: No match
-  exe "normal gRabc\<C-X>\<C-L>\<F2>\<Esc>u"
-  call assert_equal('R-Rvc', g:current_modes)
-
-  call assert_equal('n', 0->mode())
-  call assert_equal('n', 1->mode())
-
-  " i_CTRL-O
-  exe "normal i\<C-O>:call Save_mode()\<Cr>\<Esc>"
-  call assert_equal("n-niI", g:current_modes)
-
-  " R_CTRL-O
-  exe "normal R\<C-O>:call Save_mode()\<Cr>\<Esc>"
-  call assert_equal("n-niR", g:current_modes)
-
-  " gR_CTRL-O
-  exe "normal gR\<C-O>:call Save_mode()\<Cr>\<Esc>"
-  call assert_equal("n-niV", g:current_modes)
-
-  " How to test operator-pending mode?
-
-  call feedkeys("v", 'xt')
-  call assert_equal('v', mode())
-  call assert_equal('v', mode(1))
-  call feedkeys("\<Esc>V", 'xt')
-  call assert_equal('V', mode())
-  call assert_equal('V', mode(1))
-  call feedkeys("\<Esc>\<C-V>", 'xt')
-  call assert_equal("\<C-V>", mode())
-  call assert_equal("\<C-V>", mode(1))
-  call feedkeys("\<Esc>", 'xt')
-
-  call feedkeys("gh", 'xt')
-  call assert_equal('s', mode())
-  call assert_equal('s', mode(1))
-  call feedkeys("\<Esc>gH", 'xt')
-  call assert_equal('S', mode())
-  call assert_equal('S', mode(1))
-  call feedkeys("\<Esc>g\<C-H>", 'xt')
-  call assert_equal("\<C-S>", mode())
-  call assert_equal("\<C-S>", mode(1))
-  call feedkeys("\<Esc>", 'xt')
-
-  " v_CTRL-O
-  exe "normal gh\<C-O>\<F2>\<Esc>"
-  call assert_equal("v-vs", g:current_modes)
-  exe "normal gH\<C-O>\<F2>\<Esc>"
-  call assert_equal("V-Vs", g:current_modes)
-  exe "normal g\<C-H>\<C-O>\<F2>\<Esc>"
-  call assert_equal("\<C-V>-\<C-V>s", g:current_modes)
-
-  call feedkeys(":echo \<C-R>=Save_mode()\<C-U>\<CR>", 'xt')
-  call assert_equal('c-c', g:current_modes)
-  call feedkeys("gQecho \<C-R>=Save_mode()\<CR>\<CR>vi\<CR>", 'xt')
-  call assert_equal('c-cv', g:current_modes)
-  " call feedkeys("Qcall Save_mode()\<CR>vi\<CR>", 'xt')
-  " call assert_equal('c-ce', g:current_modes)
-  " How to test Ex mode?
-
-  " Test mode in operatorfunc (it used to be Operator-pending).
-  set operatorfunc=OperatorFunc
-  function OperatorFunc(_)
-    call Save_mode()
-  endfunction
-  execute "normal! g@l\<Esc>"
-  call assert_equal('n-n', g:current_modes)
-  execute "normal! i\<C-o>g@l\<Esc>"
-  call assert_equal('n-niI', g:current_modes)
-  execute "normal! R\<C-o>g@l\<Esc>"
-  call assert_equal('n-niR', g:current_modes)
-  execute "normal! gR\<C-o>g@l\<Esc>"
-  call assert_equal('n-niV', g:current_modes)
-
-  if has('terminal')
-    term
-    call feedkeys("\<C-W>N", 'xt')
-    call assert_equal('n', mode())
-    call assert_equal('nt', mode(1))
-    call feedkeys("aexit\<CR>", 'xt')
-  endif
-
-  bwipe!
-  iunmap <F2>
-  xunmap <F2>
-  set complete&
-  set operatorfunc&
-  delfunction OperatorFunc
-endfunc
-
-" Test for append()
-func Test_append()
-  enew!
-  split
-  call append(0, ["foo"])
-  call append(1, [])
-  call append(1, v:_null_list)
-  call assert_equal(['foo', ''], getline(1, '$'))
-  split
-  only
-  undo
-  undo
-
-  " Using $ instead of '$' must give an error
-  call assert_fails("call append($, 'foobar')", 'E116:')
-
-  call assert_fails("call append({}, '')", ['E728:', 'E728:'])
-endfunc
-
-" Test for setline()
-func Test_setline()
-  new
-  call setline(0, ["foo"])
-  call setline(0, [])
-  call setline(0, v:_null_list)
-  call setline(1, ["bar"])
-  call setline(1, [])
-  call setline(1, v:_null_list)
-  call setline(2, [])
-  call setline(2, v:_null_list)
-  call setline(3, [])
-  call setline(3, v:_null_list)
-  call setline(2, ["baz"])
-  call assert_equal(['bar', 'baz'], getline(1, '$'))
-  close!
-endfunc
-
-func Test_getbufvar()
-  let bnr = bufnr('%')
-  let b:var_num = '1234'
-  let def_num = '5678'
-  call assert_equal('1234', getbufvar(bnr, 'var_num'))
-  call assert_equal('1234', getbufvar(bnr, 'var_num', def_num))
-
-  let bd = getbufvar(bnr, '')
-  call assert_equal('1234', bd['var_num'])
-  call assert_true(exists("bd['changedtick']"))
-  call assert_equal(2, len(bd))
-
-  let bd2 = getbufvar(bnr, '', def_num)
-  call assert_equal(bd, bd2)
-
-  unlet b:var_num
-  call assert_equal(def_num, getbufvar(bnr, 'var_num', def_num))
-  call assert_equal('', getbufvar(bnr, 'var_num'))
-
-  let bd = getbufvar(bnr, '')
-  call assert_equal(1, len(bd))
-  let bd = getbufvar(bnr, '',def_num)
-  call assert_equal(1, len(bd))
-
-  call assert_equal('', getbufvar(9999, ''))
-  call assert_equal(def_num, getbufvar(9999, '', def_num))
-  unlet def_num
-
-  call assert_equal(0, getbufvar(bnr, '&autoindent'))
-  call assert_equal(0, getbufvar(bnr, '&autoindent', 1))
-
-  " Set and get a buffer-local variable
-  call setbufvar(bnr, 'bufvar_test', ['one', 'two'])
-  call assert_equal(['one', 'two'], getbufvar(bnr, 'bufvar_test'))
-
-  " Open new window with forced option values
-  set fileformats=unix,dos
-  new ++ff=dos ++bin ++enc=iso-8859-2
-  call assert_equal('dos', getbufvar(bufnr('%'), '&fileformat'))
-  call assert_equal(1, getbufvar(bufnr('%'), '&bin'))
-  call assert_equal('iso-8859-2', getbufvar(bufnr('%'), '&fenc'))
-  close
-
-  " Get the b: dict.
-  let b:testvar = 'one'
-  new
-  let b:testvar = 'two'
-  let thebuf = bufnr()
-  wincmd w
-  call assert_equal('two', getbufvar(thebuf, 'testvar'))
-  call assert_equal('two', getbufvar(thebuf, '').testvar)
-  bwipe!
-
-  set fileformats&
-endfunc
-
-func Test_last_buffer_nr()
-  call assert_equal(bufnr('$'), last_buffer_nr())
-endfunc
-
-func Test_stridx()
-  call assert_equal(-1, stridx('', 'l'))
-  call assert_equal(0,  stridx('', ''))
-  call assert_equal(0,  'hello'->stridx(''))
-  call assert_equal(-1, stridx('hello', 'L'))
-  call assert_equal(2,  stridx('hello', 'l', -1))
-  call assert_equal(2,  stridx('hello', 'l', 0))
-  call assert_equal(2,  'hello'->stridx('l', 1))
-  call assert_equal(3,  stridx('hello', 'l', 3))
-  call assert_equal(-1, stridx('hello', 'l', 4))
-  call assert_equal(-1, stridx('hello', 'l', 10))
-  call assert_equal(2,  stridx('hello', 'll'))
-  call assert_equal(-1, stridx('hello', 'hello world'))
-  call assert_fails("let n=stridx('hello', [])", 'E730:')
-  call assert_fails("let n=stridx([], 'l')", 'E730:')
-endfunc
-
-func Test_strridx()
-  call assert_equal(-1, strridx('', 'l'))
-  call assert_equal(0,  strridx('', ''))
-  call assert_equal(5,  strridx('hello', ''))
-  call assert_equal(-1, strridx('hello', 'L'))
-  call assert_equal(3,  'hello'->strridx('l'))
-  call assert_equal(3,  strridx('hello', 'l', 10))
-  call assert_equal(3,  strridx('hello', 'l', 3))
-  call assert_equal(2,  strridx('hello', 'l', 2))
-  call assert_equal(-1, strridx('hello', 'l', 1))
-  call assert_equal(-1, strridx('hello', 'l', 0))
-  call assert_equal(-1, strridx('hello', 'l', -1))
-  call assert_equal(2,  strridx('hello', 'll'))
-  call assert_equal(-1, strridx('hello', 'hello world'))
-  call assert_fails("let n=strridx('hello', [])", 'E730:')
-  call assert_fails("let n=strridx([], 'l')", 'E730:')
-endfunc
-
-func Test_match_func()
-  call assert_equal(4,  match('testing', 'ing'))
-  call assert_equal(4,  'testing'->match('ing', 2))
-  call assert_equal(-1, match('testing', 'ing', 5))
-  call assert_equal(-1, match('testing', 'ing', 8))
-  call assert_equal(1, match(['vim', 'testing', 'execute'], 'ing'))
-  call assert_equal(-1, match(['vim', 'testing', 'execute'], 'img'))
-  call assert_fails("let x=match('vim', [])", 'E730:')
-  call assert_equal(3, match(['a', 'b', 'c', 'a'], 'a', 1))
-  call assert_equal(-1, match(['a', 'b', 'c', 'a'], 'a', 5))
-  call assert_equal(4,  match('testing', 'ing', -1))
-  call assert_fails("let x=match('testing', 'ing', 0, [])", 'E745:')
-  call assert_equal(-1, match(v:_null_list, 2))
-  call assert_equal(-1, match('abc', '\\%('))
-endfunc
-
-func Test_matchend()
-  call assert_equal(7,  matchend('testing', 'ing'))
-  call assert_equal(7,  'testing'->matchend('ing', 2))
-  call assert_equal(-1, matchend('testing', 'ing', 5))
-  call assert_equal(-1, matchend('testing', 'ing', 8))
-  call assert_equal(match(['vim', 'testing', 'execute'], 'ing'), matchend(['vim', 'testing', 'execute'], 'ing'))
-  call assert_equal(match(['vim', 'testing', 'execute'], 'img'), matchend(['vim', 'testing', 'execute'], 'img'))
-endfunc
-
-func Test_matchlist()
-  call assert_equal(['acd', 'a', '', 'c', 'd', '', '', '', '', ''],  matchlist('acd', '\(a\)\?\(b\)\?\(c\)\?\(.*\)'))
-  call assert_equal(['d', '', '', '', 'd', '', '', '', '', ''],  'acd'->matchlist('\(a\)\?\(b\)\?\(c\)\?\(.*\)', 2))
-  call assert_equal([],  matchlist('acd', '\(a\)\?\(b\)\?\(c\)\?\(.*\)', 4))
-endfunc
-
-func Test_matchstr()
-  call assert_equal('ing',  matchstr('testing', 'ing'))
-  call assert_equal('ing',  'testing'->matchstr('ing', 2))
-  call assert_equal('', matchstr('testing', 'ing', 5))
-  call assert_equal('', matchstr('testing', 'ing', 8))
-  call assert_equal('testing', matchstr(['vim', 'testing', 'execute'], 'ing'))
-  call assert_equal('', matchstr(['vim', 'testing', 'execute'], 'img'))
-endfunc
-
-func Test_matchstrpos()
-  call assert_equal(['ing', 4, 7], matchstrpos('testing', 'ing'))
-  call assert_equal(['ing', 4, 7], 'testing'->matchstrpos('ing', 2))
-  call assert_equal(['', -1, -1], matchstrpos('testing', 'ing', 5))
-  call assert_equal(['', -1, -1], matchstrpos('testing', 'ing', 8))
-  call assert_equal(['ing', 1, 4, 7], matchstrpos(['vim', 'testing', 'execute'], 'ing'))
-  call assert_equal(['', -1, -1, -1], matchstrpos(['vim', 'testing', 'execute'], 'img'))
-endfunc
-
-func Test_nextnonblank_prevnonblank()
-  new
-insert
-This
-
-
-is
-
-a
-Test
-.
-  call assert_equal(0, nextnonblank(-1))
-  call assert_equal(0, nextnonblank(0))
-  call assert_equal(1, nextnonblank(1))
-  call assert_equal(4, 2->nextnonblank())
-  call assert_equal(4, nextnonblank(3))
-  call assert_equal(4, nextnonblank(4))
-  call assert_equal(6, nextnonblank(5))
-  call assert_equal(6, nextnonblank(6))
-  call assert_equal(7, nextnonblank(7))
-  call assert_equal(0, 8->nextnonblank())
-
-  call assert_equal(0, prevnonblank(-1))
-  call assert_equal(0, prevnonblank(0))
-  call assert_equal(1, 1->prevnonblank())
-  call assert_equal(1, prevnonblank(2))
-  call assert_equal(1, prevnonblank(3))
-  call assert_equal(4, prevnonblank(4))
-  call assert_equal(4, 5->prevnonblank())
-  call assert_equal(6, prevnonblank(6))
-  call assert_equal(7, prevnonblank(7))
-  call assert_equal(0, prevnonblank(8))
-  bw!
-endfunc
-
-func Test_byte2line_line2byte()
-  new
-  set endofline
-  call setline(1, ['a', 'bc', 'd'])
-
-  set fileformat=unix
-  call assert_equal([-1, -1, 1, 1, 2, 2, 2, 3, 3, -1],
-  \                 map(range(-1, 8), 'byte2line(v:val)'))
-  call assert_equal([-1, -1, 1, 3, 6, 8, -1],
-  \                 map(range(-1, 5), 'line2byte(v:val)'))
-
-  set fileformat=mac
-  call assert_equal([-1, -1, 1, 1, 2, 2, 2, 3, 3, -1],
-  \                 map(range(-1, 8), 'v:val->byte2line()'))
-  call assert_equal([-1, -1, 1, 3, 6, 8, -1],
-  \                 map(range(-1, 5), 'v:val->line2byte()'))
-
-  set fileformat=dos
-  call assert_equal([-1, -1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, -1],
-  \                 map(range(-1, 11), 'byte2line(v:val)'))
-  call assert_equal([-1, -1, 1, 4, 8, 11, -1],
-  \                 map(range(-1, 5), 'line2byte(v:val)'))
-
-  bw!
-  set noendofline nofixendofline
-  normal a-
-  for ff in ["unix", "mac", "dos"]
-    let &fileformat = ff
-    call assert_equal(1, line2byte(1))
-    call assert_equal(2, line2byte(2))  " line2byte(line("$") + 1) is the buffer size plus one (as per :help line2byte).
-  endfor
-
-  set endofline& fixendofline& fileformat&
-  bw!
-endfunc
-
-" Test for byteidx() and byteidxcomp() functions
-func Test_byteidx()
-  let a = '.é.' " one char of two bytes
-  call assert_equal(0, byteidx(a, 0))
-  call assert_equal(0, byteidxcomp(a, 0))
-  call assert_equal(1, byteidx(a, 1))
-  call assert_equal(1, byteidxcomp(a, 1))
-  call assert_equal(3, byteidx(a, 2))
-  call assert_equal(3, byteidxcomp(a, 2))
-  call assert_equal(4, byteidx(a, 3))
-  call assert_equal(4, byteidxcomp(a, 3))
-  call assert_equal(-1, byteidx(a, 4))
-  call assert_equal(-1, byteidxcomp(a, 4))
-
-  let b = '.é.' " normal e with composing char
-  call assert_equal(0, b->byteidx(0))
-  call assert_equal(1, b->byteidx(1))
-  call assert_equal(4, b->byteidx(2))
-  call assert_equal(5, b->byteidx(3))
-  call assert_equal(-1, b->byteidx(4))
-  call assert_fails("call byteidx([], 0)", 'E730:')
-
-  call assert_equal(0, b->byteidxcomp(0))
-  call assert_equal(1, b->byteidxcomp(1))
-  call assert_equal(2, b->byteidxcomp(2))
-  call assert_equal(4, b->byteidxcomp(3))
-  call assert_equal(5, b->byteidxcomp(4))
-  call assert_equal(-1, b->byteidxcomp(5))
-  call assert_fails("call byteidxcomp([], 0)", 'E730:')
-endfunc
-
-" Test for charidx()
-func Test_charidx()
-  let a = 'xáb́y'
-  call assert_equal(0, charidx(a, 0))
-  call assert_equal(1, charidx(a, 3))
-  call assert_equal(2, charidx(a, 4))
-  call assert_equal(3, charidx(a, 7))
-  call assert_equal(-1, charidx(a, 8))
-  call assert_equal(-1, charidx(a, -1))
-  call assert_equal(-1, charidx('', 0))
-  call assert_equal(-1, charidx(v:_null_string, 0))
-
-  " count composing characters
-  call assert_equal(0, charidx(a, 0, 1))
-  call assert_equal(2, charidx(a, 2, 1))
-  call assert_equal(3, charidx(a, 4, 1))
-  call assert_equal(5, charidx(a, 7, 1))
-  call assert_equal(-1, charidx(a, 8, 1))
-  call assert_equal(-1, charidx('', 0, 1))
-
-  call assert_fails('let x = charidx([], 1)', 'E474:')
-  call assert_fails('let x = charidx("abc", [])', 'E474:')
-  call assert_fails('let x = charidx("abc", 1, [])', 'E474:')
-  call assert_fails('let x = charidx("abc", 1, -1)', 'E1023:')
-  call assert_fails('let x = charidx("abc", 1, 2)', 'E1023:')
-endfunc
-
-func Test_count()
-  let l = ['a', 'a', 'A', 'b']
-  call assert_equal(2, count(l, 'a'))
-  call assert_equal(1, count(l, 'A'))
-  call assert_equal(1, count(l, 'b'))
-  call assert_equal(0, count(l, 'B'))
-
-  call assert_equal(2, count(l, 'a', 0))
-  call assert_equal(1, count(l, 'A', 0))
-  call assert_equal(1, count(l, 'b', 0))
-  call assert_equal(0, count(l, 'B', 0))
-
-  call assert_equal(3, count(l, 'a', 1))
-  call assert_equal(3, count(l, 'A', 1))
-  call assert_equal(1, count(l, 'b', 1))
-  call assert_equal(1, count(l, 'B', 1))
-  call assert_equal(0, count(l, 'c', 1))
-
-  call assert_equal(1, count(l, 'a', 0, 1))
-  call assert_equal(2, count(l, 'a', 1, 1))
-  call assert_fails('call count(l, "a", 0, 10)', 'E684:')
-  call assert_fails('call count(l, "a", [])', 'E745:')
-
-  let d = {1: 'a', 2: 'a', 3: 'A', 4: 'b'}
-  call assert_equal(2, count(d, 'a'))
-  call assert_equal(1, count(d, 'A'))
-  call assert_equal(1, count(d, 'b'))
-  call assert_equal(0, count(d, 'B'))
-
-  call assert_equal(2, count(d, 'a', 0))
-  call assert_equal(1, count(d, 'A', 0))
-  call assert_equal(1, count(d, 'b', 0))
-  call assert_equal(0, count(d, 'B', 0))
-
-  call assert_equal(3, count(d, 'a', 1))
-  call assert_equal(3, count(d, 'A', 1))
-  call assert_equal(1, count(d, 'b', 1))
-  call assert_equal(1, count(d, 'B', 1))
-  call assert_equal(0, count(d, 'c', 1))
-
-  call assert_fails('call count(d, "a", 0, 1)', 'E474:')
-
-  call assert_equal(0, count("foo", "bar"))
-  call assert_equal(1, count("foo", "oo"))
-  call assert_equal(2, count("foo", "o"))
-  call assert_equal(0, count("foo", "O"))
-  call assert_equal(2, count("foo", "O", 1))
-  call assert_equal(2, count("fooooo", "oo"))
-  call assert_equal(0, count("foo", ""))
-
-  call assert_fails('call count(0, 0)', 'E712:')
-endfunc
-
-func Test_changenr()
-  new Xchangenr
-  call assert_equal(0, changenr())
-  norm ifoo
-  call assert_equal(1, changenr())
-  set undolevels=10
-  norm Sbar
-  call assert_equal(2, changenr())
-  undo
-  call assert_equal(1, changenr())
-  redo
-  call assert_equal(2, changenr())
-  bw!
-  set undolevels&
-endfunc
-
-func Test_filewritable()
-  new Xfilewritable
-  write!
-  call assert_equal(1, filewritable('Xfilewritable'))
-
-  call assert_notequal(0, setfperm('Xfilewritable', 'r--r-----'))
-  call assert_equal(0, filewritable('Xfilewritable'))
-
-  call assert_notequal(0, setfperm('Xfilewritable', 'rw-r-----'))
-  call assert_equal(1, 'Xfilewritable'->filewritable())
-
-  call assert_equal(0, filewritable('doesnotexist'))
-
-  call mkdir('Xdir')
-  call assert_equal(2, filewritable('Xdir'))
-  call delete('Xdir', 'd')
-
-  call delete('Xfilewritable')
-  bw!
-endfunc
-
-func Test_Executable()
-  if has('win32')
-    call assert_equal(1, executable('notepad'))
-    call assert_equal(1, 'notepad.exe'->executable())
-    call assert_equal(0, executable('notepad.exe.exe'))
-    call assert_equal(0, executable('shell32.dll'))
-    call assert_equal(0, executable('win.ini'))
-  elseif has('unix')
-    call assert_equal(1, 'cat'->executable())
-    call assert_equal(0, executable('nodogshere'))
-
-    " get "cat" path and remove the leading /
-    let catcmd = exepath('cat')[1:]
-    new
-    " check that the relative path works in /
-    lcd /
-    call assert_equal(1, executable(catcmd))
-    let result = catcmd->exepath()
-    " when using chroot looking for sbin/cat can return bin/cat, that is OK
-    if catcmd =~ '\<sbin\>' && result =~ '\<bin\>'
-      call assert_equal('/' .. substitute(catcmd, '\<sbin\>', 'bin', ''), result)
-    else
-      " /bin/cat and /usr/bin/cat may be hard linked, we could get either
-      let result = substitute(result, '/usr/bin/cat', '/bin/cat', '')
-      let catcmd = substitute(catcmd, 'usr/bin/cat', 'bin/cat', '')
-      call assert_equal('/' .. catcmd, result)
-    endif
-    bwipe
-  else
-    throw 'Skipped: does not work on this platform'
-  endif
-endfunc
-
-func Test_executable_longname()
-  if !has('win32')
-    return
-  endif
-
-  let fname = 'X' . repeat('あ', 200) . '.bat'
-  call writefile([], fname)
-  call assert_equal(1, executable(fname))
-  call delete(fname)
-endfunc
-
-func Test_hostname()
-  let hostname_vim = hostname()
-  if has('unix')
-    let hostname_system = systemlist('uname -n')[0]
-    call assert_equal(hostname_vim, hostname_system)
-  endif
-endfunc
-
-func Test_getpid()
-  " getpid() always returns the same value within a vim instance.
-  call assert_equal(getpid(), getpid())
-  if has('unix')
-    call assert_equal(systemlist('echo $PPID')[0], string(getpid()))
-  endif
-endfunc
-
-func Test_hlexists()
-  call assert_equal(0, hlexists('does_not_exist'))
-  " call assert_equal(0, 'Number'->hlexists())
-  call assert_equal(0, highlight_exists('does_not_exist'))
-  " call assert_equal(0, highlight_exists('Number'))
-  syntax on
-  call assert_equal(0, hlexists('does_not_exist'))
-  " call assert_equal(1, hlexists('Number'))
-  call assert_equal(0, highlight_exists('does_not_exist'))
-  " call assert_equal(1, highlight_exists('Number'))
-  syntax off
-endfunc
-
-func Test_col()
-  new
-  call setline(1, 'abcdef')
-  norm gg4|mx6|mY2|
-  call assert_equal(2, col('.'))
-  call assert_equal(7, col('$'))
-  call assert_equal(2, col('v'))
-  call assert_equal(4, col("'x"))
-  call assert_equal(6, col("'Y"))
-  call assert_equal(2, [1, 2]->col())
-  call assert_equal(7, col([1, '$']))
-
-  call assert_equal(0, col(''))
-  call assert_equal(0, col('x'))
-  call assert_equal(0, col([2, '$']))
-  call assert_equal(0, col([1, 100]))
-  call assert_equal(0, col([1]))
-  call assert_equal(0, col(v:_null_list))
-  call assert_fails('let c = col({})', 'E1222:')
-  call assert_fails('let c = col(".", [])', 'E1210:')
-
-  " test for getting the visual start column
-  func T()
-    let g:Vcol = col('v')
-    return ''
-  endfunc
-  let g:Vcol = 0
-  xmap <expr> <F2> T()
-  exe "normal gg3|ve\<F2>"
-  call assert_equal(3, g:Vcol)
-  xunmap <F2>
-  delfunc T
-
-  " Test for the visual line start and end marks '< and '>
-  call setline(1, ['one', 'one two', 'one two three'])
-  "normal! ggVG
-  call feedkeys("ggVG\<Esc>", 'xt')
-  call assert_equal(1, col("'<"))
-  call assert_equal(14, col("'>"))
-  " Delete the last line of the visually selected region
-  $d
-  call assert_notequal(14, col("'>"))
-
-  " Test with 'virtualedit'
-  set virtualedit=all
-  call cursor(1, 10)
-  call assert_equal(4, col('.'))
-  set virtualedit&
-
-  " Test for getting the column number in another window
-  let winid = win_getid()
-  new
-  call win_execute(winid, 'normal 1G$')
-  call assert_equal(3, col('.', winid))
-  call win_execute(winid, 'normal 2G')
-  call assert_equal(8, col('$', winid))
-  call assert_equal(0, col('.', 5001))
-
-  bw!
-endfunc
-
-" Test for input()
-func Test_input_func()
-  " Test for prompt with multiple lines
-  redir => v
-  call feedkeys(":let c = input(\"A\\nB\\nC\\n? \")\<CR>B\<CR>", 'xt')
-  redir END
-  call assert_equal("B", c)
-  call assert_equal(['A', 'B', 'C'], split(v, "\n"))
-
-  " Test for default value
-  call feedkeys(":let c = input('color? ', 'red')\<CR>\<CR>", 'xt')
-  call assert_equal('red', c)
-
-  " Test for completion at the input prompt
-  func! Tcomplete(arglead, cmdline, pos)
-    return "item1\nitem2\nitem3"
-  endfunc
-  call feedkeys(":let c = input('Q? ', '', 'custom,Tcomplete')\<CR>"
-        \ .. "\<C-A>\<CR>", 'xt')
-  delfunc Tcomplete
-  call assert_equal('item1 item2 item3', c)
-
-  " Test for using special characters as default input
-  call feedkeys(":let c = input('name? ', \"x\\<BS>y\")\<CR>\<CR>", 'xt')
-  call assert_equal('y', c)
-
-  " Test for using text with composing characters as default input
-  call feedkeys(":let c = input('name? ', \"ã̳\")\<CR>\<CR>", 'xt')
-  call assert_equal('ã̳', c)
-
-  " Test for using <CR> as default input
-  call feedkeys(":let c = input('name? ', \"\\<CR>\")\<CR>x\<CR>", 'xt')
-  call assert_equal(' x', c)
-
-  call assert_fails("call input('F:', '', 'invalid')", 'E180:')
-  call assert_fails("call input('F:', '', [])", 'E730:')
-endfunc
-
-" Test for the inputdialog() function
-func Test_inputdialog()
-  if has('gui_running')
-    call assert_fails('let v=inputdialog([], "xx")', 'E730:')
-    call assert_fails('let v=inputdialog("Q", [])', 'E730:')
-  else
-    call feedkeys(":let v=inputdialog('Q:', 'xx', 'yy')\<CR>\<CR>", 'xt')
-    call assert_equal('xx', v)
-    call feedkeys(":let v=inputdialog('Q:', 'xx', 'yy')\<CR>\<Esc>", 'xt')
-    call assert_equal('yy', v)
-  endif
-endfunc
-
-" Test for inputlist()
-func Test_inputlist()
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>1\<cr>", 'tx')
-  call assert_equal(1, c)
-  call feedkeys(":let c = ['Select color:', '1. red', '2. green', '3. blue']->inputlist()\<cr>2\<cr>", 'tx')
-  call assert_equal(2, c)
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>3\<cr>", 'tx')
-  call assert_equal(3, c)
-
-  " CR to cancel
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>\<cr>", 'tx')
-  call assert_equal(0, c)
-
-  " Esc to cancel
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>\<Esc>", 'tx')
-  call assert_equal(0, c)
-
-  " q to cancel
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>q", 'tx')
-  call assert_equal(0, c)
-
-  " Cancel after inputting a number
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>5q", 'tx')
-  call assert_equal(0, c)
-
-  " Use backspace to delete characters in the prompt
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>1\<BS>3\<BS>2\<cr>", 'tx')
-  call assert_equal(2, c)
-
-  " Use mouse to make a selection
-  call Ntest_setmouse(&lines - 3, 2)
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>\<LeftMouse>", 'tx')
-  call assert_equal(1, c)
-  " Mouse click outside of the list
-  call Ntest_setmouse(&lines - 6, 2)
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>\<LeftMouse>", 'tx')
-  call assert_equal(-2, c)
-
-  call assert_fails('call inputlist("")', 'E686:')
-endfunc
-
-func Test_range_inputlist()
-  " flush out any garbage left in the buffer
-  while getchar(0)
-  endwhile
-
-  call feedkeys(":let result = inputlist(range(10))\<CR>1\<CR>", 'x')
-  call assert_equal(1, result)
-  call feedkeys(":let result = inputlist(range(3, 10))\<CR>1\<CR>", 'x')
-  call assert_equal(1, result)
-
-  unlet result
-endfunc
-
-func Test_balloon_show()
-  CheckFeature balloon_eval
-
-  " This won't do anything but must not crash either.
-  call balloon_show('hi!')
-  if !has('gui_running')
-    call balloon_show(range(3))
-    call balloon_show([])
-  endif
-endfunc
-
-func Test_shellescape()
-  let save_shell = &shell
-  set shell=bash
-  call assert_equal("'text'", shellescape('text'))
-  call assert_equal("'te\"xt'", 'te"xt'->shellescape())
-  call assert_equal("'te'\\''xt'", shellescape("te'xt"))
-
-  call assert_equal("'te%xt'", shellescape("te%xt"))
-  call assert_equal("'te\\%xt'", shellescape("te%xt", 1))
-  call assert_equal("'te#xt'", shellescape("te#xt"))
-  call assert_equal("'te\\#xt'", shellescape("te#xt", 1))
-  call assert_equal("'te!xt'", shellescape("te!xt"))
-  call assert_equal("'te\\!xt'", shellescape("te!xt", 1))
-
-  call assert_equal("'te\nxt'", shellescape("te\nxt"))
-  call assert_equal("'te\\\nxt'", shellescape("te\nxt", 1))
-  set shell=tcsh
-  call assert_equal("'te\\!xt'", shellescape("te!xt"))
-  call assert_equal("'te\\\\!xt'", shellescape("te!xt", 1))
-  call assert_equal("'te\\\nxt'", shellescape("te\nxt"))
-  call assert_equal("'te\\\\\nxt'", shellescape("te\nxt", 1))
-
-  set shell=fish
-  call assert_equal("'text'", shellescape('text'))
-  call assert_equal("'te\"xt'", shellescape('te"xt'))
-  call assert_equal("'te'\\''xt'", shellescape("te'xt"))
-
-  call assert_equal("'te%xt'", shellescape("te%xt"))
-  call assert_equal("'te\\%xt'", shellescape("te%xt", 1))
-  call assert_equal("'te#xt'", shellescape("te#xt"))
-  call assert_equal("'te\\#xt'", shellescape("te#xt", 1))
-  call assert_equal("'te!xt'", shellescape("te!xt"))
-  call assert_equal("'te\\!xt'", shellescape("te!xt", 1))
-
-  call assert_equal("'te\\\\xt'", shellescape("te\\xt"))
-  call assert_equal("'te\\\\xt'", shellescape("te\\xt", 1))
-  call assert_equal("'te\\\\'\\''xt'", shellescape("te\\'xt"))
-  call assert_equal("'te\\\\'\\''xt'", shellescape("te\\'xt", 1))
-  call assert_equal("'te\\\\!xt'", shellescape("te\\!xt"))
-  call assert_equal("'te\\\\\\!xt'", shellescape("te\\!xt", 1))
-  call assert_equal("'te\\\\%xt'", shellescape("te\\%xt"))
-  call assert_equal("'te\\\\\\%xt'", shellescape("te\\%xt", 1))
-  call assert_equal("'te\\\\#xt'", shellescape("te\\#xt"))
-  call assert_equal("'te\\\\\\#xt'", shellescape("te\\#xt", 1))
-
-  let &shell = save_shell
-endfunc
-
-func Test_setbufvar_options()
-  " This tests that aucmd_prepbuf() and aucmd_restbuf() properly restore the
-  " window layout.
-  call assert_equal(1, winnr('$'))
-  split dummy_preview
-  resize 2
-  set winfixheight winfixwidth
-  let prev_id = win_getid()
-
-  wincmd j
-  let wh = winheight(0)
-  let dummy_buf = bufnr('dummy_buf1', v:true)
-  call setbufvar(dummy_buf, '&buftype', 'nofile')
-  execute 'belowright vertical split #' . dummy_buf
-  call assert_equal(wh, winheight(0))
-  let dum1_id = win_getid()
-
-  wincmd h
-  let wh = winheight(0)
-  let dummy_buf = bufnr('dummy_buf2', v:true)
-  eval 'nofile'->setbufvar(dummy_buf, '&buftype')
-  execute 'belowright vertical split #' . dummy_buf
-  call assert_equal(wh, winheight(0))
-
-  bwipe!
-  call win_gotoid(prev_id)
-  bwipe!
-  call win_gotoid(dum1_id)
-  bwipe!
-endfunc
-
-func Test_redo_in_nested_functions()
-  nnoremap g. :set opfunc=Operator<CR>g@
-  function Operator( type, ... )
-     let @x = 'XXX'
-     execute 'normal! g`[' . (a:type ==# 'line' ? 'V' : 'v') . 'g`]' . '"xp'
-  endfunction
-
-  function! Apply()
-      5,6normal! .
-  endfunction
-
-  new
-  call setline(1, repeat(['some "quoted" text', 'more "quoted" text'], 3))
-  1normal g.i"
-  call assert_equal('some "XXX" text', getline(1))
-  3,4normal .
-  call assert_equal('some "XXX" text', getline(3))
-  call assert_equal('more "XXX" text', getline(4))
-  call Apply()
-  call assert_equal('some "XXX" text', getline(5))
-  call assert_equal('more "XXX" text', getline(6))
-  bwipe!
-
-  nunmap g.
-  delfunc Operator
-  delfunc Apply
-endfunc
-
-func Test_trim()
-  call assert_equal("Testing", trim("  \t\r\r\x0BTesting  \t\n\r\n\t\x0B\x0B"))
-  call assert_equal("Testing", "  \t  \r\r\n\n\x0BTesting  \t\n\r\n\t\x0B\x0B"->trim())
-  call assert_equal("RESERVE", trim("xyz \twwRESERVEzyww \t\t", " wxyz\t"))
-  call assert_equal("wRE    \tSERVEzyww", trim("wRE    \tSERVEzyww"))
-  call assert_equal("abcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail"))
-  call assert_equal("\tabcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail", " "))
-  call assert_equal(" \tabcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail", "abx"))
-  call assert_equal("RESERVE", trim("你RESERVE好", "你好"))
-  call assert_equal("您R E SER V E早", trim("你好您R E SER V E早好你你", "你好"))
-  call assert_equal("你好您R E SER V E早好你你", trim(" \n\r\r   你好您R E SER V E早好你你    \t  \x0B", ))
-  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    你好您R E SER V E早好你你    \t  \x0B", " 你好"))
-  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    tteesstttt你好您R E SER V E早好你你    \t  \x0B ttestt", " 你好tes"))
-  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    tteesstttt你好您R E SER V E早好你你    \t  \x0B ttestt", "   你你你好好好tttsses"))
-  call assert_equal("留下", trim("这些些不要这些留下这些", "这些不要"))
-  call assert_equal("", trim("", ""))
-  call assert_equal("a", trim("a", ""))
-  call assert_equal("", trim("", "a"))
-  call assert_equal("vim", trim("  vim  ", " ", 0))
-  call assert_equal("vim  ", trim("  vim  ", " ", 1))
-  call assert_equal("  vim", trim("  vim  ", " ", 2))
-  call assert_fails('eval trim("  vim  ", " ", [])', 'E745:')
-  call assert_fails('eval trim("  vim  ", " ", -1)', 'E475:')
-  call assert_fails('eval trim("  vim  ", " ", 3)', 'E475:')
-  call assert_fails('eval trim("  vim  ", 0)', 'E475:')
-
-  let chars = join(map(range(1, 0x20) + [0xa0], {n -> n->nr2char()}), '')
-  call assert_equal("x", trim(chars . "x" . chars))
-
-  call assert_fails('let c=trim([])', 'E730:')
-endfunc
-
-" Test for reg_recording() and reg_executing()
-func Test_reg_executing_and_recording()
-  let s:reg_stat = ''
-  func s:save_reg_stat()
-    let s:reg_stat = reg_recording() . ':' . reg_executing()
-    return ''
-  endfunc
-
-  new
-  call s:save_reg_stat()
-  call assert_equal(':', s:reg_stat)
-  call feedkeys("qa\"=s:save_reg_stat()\<CR>pq", 'xt')
-  call assert_equal('a:', s:reg_stat)
-  call feedkeys("@a", 'xt')
-  call assert_equal(':a', s:reg_stat)
-  call feedkeys("qb@aq", 'xt')
-  call assert_equal('b:a', s:reg_stat)
-  call feedkeys("q\"\"=s:save_reg_stat()\<CR>pq", 'xt')
-  call assert_equal('":', s:reg_stat)
-
-  " :normal command saves and restores reg_executing
-  let s:reg_stat = ''
-  let @q = ":call TestFunc()\<CR>:call s:save_reg_stat()\<CR>"
-  func TestFunc() abort
-    normal! ia
-  endfunc
-  call feedkeys("@q", 'xt')
-  call assert_equal(':q', s:reg_stat)
-  delfunc TestFunc
-
-  " getchar() command saves and restores reg_executing
-  map W :call TestFunc()<CR>
-  let @q = "W"
-  let g:typed = ''
-  let g:regs = []
-  func TestFunc() abort
-    let g:regs += [reg_executing()]
-    let g:typed = getchar(0)
-    let g:regs += [reg_executing()]
-  endfunc
-  call feedkeys("@qy", 'xt')
-  call assert_equal(char2nr("y"), g:typed)
-  call assert_equal(['q', 'q'], g:regs)
-  delfunc TestFunc
-  unmap W
-  unlet g:typed
-  unlet g:regs
-
-  " input() command saves and restores reg_executing
-  map W :call TestFunc()<CR>
-  let @q = "W"
-  let g:typed = ''
-  let g:regs = []
-  func TestFunc() abort
-    let g:regs += [reg_executing()]
-    let g:typed = '?'->input()
-    let g:regs += [reg_executing()]
-  endfunc
-  call feedkeys("@qy\<CR>", 'xt')
-  call assert_equal("y", g:typed)
-  call assert_equal(['q', 'q'], g:regs)
-  delfunc TestFunc
-  unmap W
-  unlet g:typed
-  unlet g:regs
-
-  bwipe!
-  delfunc s:save_reg_stat
-  unlet s:reg_stat
-endfunc
-
-func Test_inputsecret()
-  map W :call TestFunc()<CR>
-  let @q = "W"
-  let g:typed1 = ''
-  let g:typed2 = ''
-  let g:regs = []
-  func TestFunc() abort
-    let g:typed1 = '?'->inputsecret()
-    let g:typed2 = inputsecret('password: ')
-  endfunc
-  call feedkeys("@qsomething\<CR>else\<CR>", 'xt')
-  call assert_equal("something", g:typed1)
-  call assert_equal("else", g:typed2)
-  delfunc TestFunc
-  unmap W
-  unlet g:typed1
-  unlet g:typed2
-endfunc
-
-func Test_getchar()
-  call feedkeys('a', '')
-  call assert_equal(char2nr('a'), getchar())
-  call assert_equal(0, getchar(0))
-  call assert_equal(0, getchar(1))
-
-  call feedkeys('a', '')
-  call assert_equal('a', getcharstr())
-  call assert_equal('', getcharstr(0))
-  call assert_equal('', getcharstr(1))
-
-  call feedkeys("\<M-F2>", '')
-  call assert_equal("\<M-F2>", getchar(0))
-  call assert_equal(0, getchar(0))
-
-  call setline(1, 'xxxx')
-  call Ntest_setmouse(1, 3)
-  let v:mouse_win = 9
-  let v:mouse_winid = 9
-  let v:mouse_lnum = 9
-  let v:mouse_col = 9
-  call feedkeys("\<S-LeftMouse>", '')
-  call assert_equal("\<S-LeftMouse>", getchar())
-  call assert_equal(1, v:mouse_win)
-  call assert_equal(win_getid(1), v:mouse_winid)
-  call assert_equal(1, v:mouse_lnum)
-  call assert_equal(3, v:mouse_col)
-  enew!
-endfunc
-
-func Test_libcall_libcallnr()
-  if !has('libcall')
-    return
-  endif
-
-  if has('win32')
-    let libc = 'msvcrt.dll'
-  elseif has('mac')
-    let libc = 'libSystem.B.dylib'
-  elseif executable('ldd')
-    let libc = matchstr(split(system('ldd ' . GetVimProg())), '/libc\.so\>')
-  endif
-  if get(l:, 'libc', '') ==# ''
-    " On Unix, libc.so can be in various places.
-    if has('linux')
-      " There is not documented but regarding the 1st argument of glibc's
-      " dlopen an empty string and nullptr are equivalent, so using an empty
-      " string for the 1st argument of libcall allows to call functions.
-      let libc = ''
-    elseif has('sun')
-      " Set the path to libc.so according to the architecture.
-      let test_bits = system('file ' . GetVimProg())
-      let test_arch = system('uname -p')
-      if test_bits =~ '64-bit' && test_arch =~ 'sparc'
-        let libc = '/usr/lib/sparcv9/libc.so'
-      elseif test_bits =~ '64-bit' && test_arch =~ 'i386'
-        let libc = '/usr/lib/amd64/libc.so'
-      else
-        let libc = '/usr/lib/libc.so'
-      endif
-    else
-      " Unfortunately skip this test until a good way is found.
-      return
-    endif
-  endif
-
-  if has('win32')
-    call assert_equal($USERPROFILE, 'USERPROFILE'->libcall(libc, 'getenv'))
-  else
-    call assert_equal($HOME, 'HOME'->libcall(libc, 'getenv'))
-  endif
-
-  " If function returns NULL, libcall() should return an empty string.
-  call assert_equal('', libcall(libc, 'getenv', 'X_ENV_DOES_NOT_EXIT'))
-
-  " Test libcallnr() with string and integer argument.
-  call assert_equal(4, 'abcd'->libcallnr(libc, 'strlen'))
-  call assert_equal(char2nr('A'), char2nr('a')->libcallnr(libc, 'toupper'))
-
-  call assert_fails("call libcall(libc, 'Xdoesnotexist_', '')", ['', 'E364:'])
-  call assert_fails("call libcallnr(libc, 'Xdoesnotexist_', '')", ['', 'E364:'])
-
-  call assert_fails("call libcall('Xdoesnotexist_', 'getenv', 'HOME')", ['', 'E364:'])
-  call assert_fails("call libcallnr('Xdoesnotexist_', 'strlen', 'abcd')", ['', 'E364:'])
-endfunc
-
-sandbox function Fsandbox()
-  normal ix
-endfunc
-
-func Test_func_sandbox()
-  sandbox let F = {-> 'hello'}
-  call assert_equal('hello', F())
-
-  sandbox let F = {-> "normal ix\<Esc>"->execute()}
-  call assert_fails('call F()', 'E48:')
-  unlet F
-
-  call assert_fails('call Fsandbox()', 'E48:')
-  delfunc Fsandbox
-
-  " From a sandbox try to set a predefined variable (which cannot be modified
-  " from a sandbox)
-  call assert_fails('sandbox let v:lnum = 10', 'E794:')
-endfunc
-
-func EditAnotherFile()
-  let word = expand('<cword>')
-  edit Xfuncrange2
-endfunc
-
-func Test_func_range_with_edit()
-  " Define a function that edits another buffer, then call it with a range that
-  " is invalid in that buffer.
-  call writefile(['just one line'], 'Xfuncrange2')
-  new
-  eval 10->range()->setline(1)
-  write Xfuncrange1
-  call assert_fails('5,8call EditAnotherFile()', 'E16:')
-
-  call delete('Xfuncrange1')
-  call delete('Xfuncrange2')
-  bwipe!
-endfunc
-
-func Test_func_exists_on_reload()
-  call writefile(['func ExistingFunction()', 'echo "yes"', 'endfunc'], 'Xfuncexists')
-  call assert_equal(0, exists('*ExistingFunction'))
-  source Xfuncexists
-  call assert_equal(1, '*ExistingFunction'->exists())
-  " Redefining a function when reloading a script is OK.
-  source Xfuncexists
-  call assert_equal(1, exists('*ExistingFunction'))
-
-  " But redefining in another script is not OK.
-  call writefile(['func ExistingFunction()', 'echo "yes"', 'endfunc'], 'Xfuncexists2')
-  call assert_fails('source Xfuncexists2', 'E122:')
-
-  delfunc ExistingFunction
-  call assert_equal(0, exists('*ExistingFunction'))
-  call writefile([
-	\ 'func ExistingFunction()', 'echo "yes"', 'endfunc',
-	\ 'func ExistingFunction()', 'echo "no"', 'endfunc',
-	\ ], 'Xfuncexists')
-  call assert_fails('source Xfuncexists', 'E122:')
-  call assert_equal(1, exists('*ExistingFunction'))
-
-  call delete('Xfuncexists2')
-  call delete('Xfuncexists')
-  delfunc ExistingFunction
-endfunc
-
-func Test_platform_name()
-  " The system matches at most only one name.
-  let names = ['amiga', 'beos', 'bsd', 'hpux', 'linux', 'mac', 'qnx', 'sun', 'vms', 'win32', 'win32unix']
-  call assert_inrange(0, 1, len(filter(copy(names), 'has(v:val)')))
-
-  " Is Unix?
-  call assert_equal(has('beos'), has('beos') && has('unix'))
-  call assert_equal(has('bsd'), has('bsd') && has('unix'))
-  call assert_equal(has('hpux'), has('hpux') && has('unix'))
-  call assert_equal(has('linux'), has('linux') && has('unix'))
-  call assert_equal(has('mac'), has('mac') && has('unix'))
-  call assert_equal(has('qnx'), has('qnx') && has('unix'))
-  call assert_equal(has('sun'), has('sun') && has('unix'))
-  call assert_equal(has('win32'), has('win32') && !has('unix'))
-  call assert_equal(has('win32unix'), has('win32unix') && has('unix'))
-
-  if has('unix') && executable('uname')
-    let uname = system('uname')
-    call assert_equal(uname =~? 'BeOS', has('beos'))
-    " GNU userland on BSD kernels (e.g., GNU/kFreeBSD) don't have BSD defined
-    call assert_equal(uname =~? '\%(GNU/k\w\+\)\@<!BSD\|DragonFly', has('bsd'))
-    call assert_equal(uname =~? 'HP-UX', has('hpux'))
-    call assert_equal(uname =~? 'Linux', has('linux'))
-    call assert_equal(uname =~? 'Darwin', has('mac'))
-    call assert_equal(uname =~? 'QNX', has('qnx'))
-    call assert_equal(uname =~? 'SunOS', has('sun'))
-    call assert_equal(uname =~? 'CYGWIN\|MSYS', has('win32unix'))
-  endif
-endfunc
-
-" Test confirm({msg} [, {choices} [, {default} [, {type}]]])
-func Test_confirm()
-  " requires a UI to be active
-  throw 'Skipped: use test/functional/vimscript/input_spec.lua'
-  CheckUnix
-  CheckNotGui
-
-  call feedkeys('o', 'L')
-  let a = confirm('Press O to proceed')
-  call assert_equal(1, a)
-
-  call feedkeys('y', 'L')
-  let a = 'Are you sure?'->confirm("&Yes\n&No")
-  call assert_equal(1, a)
-
-  call feedkeys('n', 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No")
-  call assert_equal(2, a)
-
-  " confirm() should return 0 when pressing CTRL-C.
-  call feedkeys("\<C-C>", 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No")
-  call assert_equal(0, a)
-
-  " <Esc> requires another character to avoid it being seen as the start of an
-  " escape sequence.  Zero should be harmless.
-  eval "\<Esc>0"->feedkeys('L')
-  let a = confirm('Are you sure?', "&Yes\n&No")
-  call assert_equal(0, a)
-
-  " Default choice is returned when pressing <CR>.
-  call feedkeys("\<CR>", 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No")
-  call assert_equal(1, a)
-
-  call feedkeys("\<CR>", 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No", 2)
-  call assert_equal(2, a)
-
-  call feedkeys("\<CR>", 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No", 0)
-  call assert_equal(0, a)
-
-  " Test with the {type} 4th argument
-  for type in ['Error', 'Question', 'Info', 'Warning', 'Generic']
-    call feedkeys('y', 'L')
-    let a = confirm('Are you sure?', "&Yes\n&No\n", 1, type)
-    call assert_equal(1, a)
-  endfor
-
-  call assert_fails('call confirm([])', 'E730:')
-  call assert_fails('call confirm("Are you sure?", [])', 'E730:')
-  call assert_fails('call confirm("Are you sure?", "&Yes\n&No\n", [])', 'E745:')
-  call assert_fails('call confirm("Are you sure?", "&Yes\n&No\n", 0, [])', 'E730:')
-endfunc
-
-func Test_readdir()
-  call mkdir('Xdir')
-  call writefile([], 'Xdir/foo.txt')
-  call writefile([], 'Xdir/bar.txt')
-  call mkdir('Xdir/dir')
-
-  " All results
-  let files = readdir('Xdir')
-  call assert_equal(['bar.txt', 'dir', 'foo.txt'], sort(files))
-
-  " Only results containing "f"
-  let files = 'Xdir'->readdir({ x -> stridx(x, 'f') !=- 1 })
-  call assert_equal(['foo.txt'], sort(files))
-
-  " Only .txt files
-  let files = readdir('Xdir', { x -> x =~ '.txt$' })
-  call assert_equal(['bar.txt', 'foo.txt'], sort(files))
-
-  " Only .txt files with string
-  let files = readdir('Xdir', 'v:val =~ ".txt$"')
-  call assert_equal(['bar.txt', 'foo.txt'], sort(files))
-
-  " Limit to 1 result.
-  let l = []
-  let files = readdir('Xdir', {x -> len(add(l, x)) == 2 ? -1 : 1})
-  call assert_equal(1, len(files))
-
-  eval 'Xdir'->delete('rf')
-endfunc
-
-func Test_delete_rf()
-  call mkdir('Xdir')
-  call writefile([], 'Xdir/foo.txt')
-  call writefile([], 'Xdir/bar.txt')
-  call mkdir('Xdir/[a-1]')  " issue #696
-  call writefile([], 'Xdir/[a-1]/foo.txt')
-  call writefile([], 'Xdir/[a-1]/bar.txt')
-  call assert_true(filereadable('Xdir/foo.txt'))
-  call assert_true('Xdir/[a-1]/foo.txt'->filereadable())
-
-  call assert_equal(0, delete('Xdir', 'rf'))
-  call assert_false(filereadable('Xdir/foo.txt'))
-  call assert_false(filereadable('Xdir/[a-1]/foo.txt'))
-
-  if has('unix')
-    call mkdir('Xdir/Xdir2', 'p')
-    silent !chmod 555 Xdir
-    call assert_equal(-1, delete('Xdir/Xdir2', 'rf'))
-    call assert_equal(-1, delete('Xdir', 'rf'))
-    silent !chmod 755 Xdir
-    call assert_equal(0, delete('Xdir', 'rf'))
-  endif
-endfunc
-
-func Test_call()
-  call assert_equal(3, call('len', [123]))
-  call assert_equal(3, 'len'->call([123]))
-  call assert_fails("call call('len', 123)", 'E714:')
-  call assert_equal(0, call('', []))
-  call assert_equal(0, call('len', v:_null_list))
-
-  function Mylen() dict
-     return len(self.data)
-  endfunction
-  let mydict = {'data': [0, 1, 2, 3], 'len': function("Mylen")}
-  eval mydict.len->call([], mydict)->assert_equal(4)
-  call assert_fails("call call('Mylen', [], 0)", 'E715:')
-  call assert_fails('call foo', 'E107:')
-endfunc
-
-func Test_char2nr()
-  call assert_equal(12354, char2nr('あ', 1))
-  call assert_equal(120, 'x'->char2nr())
-  " set encoding=latin1
-  call assert_equal(120, 'x'->char2nr())
-  set encoding=utf-8
-endfunc
-
-func Test_charclass()
-  call assert_equal(0, charclass(' '))
-  call assert_equal(1, charclass('.'))
-  call assert_equal(2, charclass('x'))
-  call assert_equal(3, charclass("\u203c"))
-  " this used to crash vim
-  call assert_equal(0, "xxx"[-1]->charclass())
-endfunc
-
-func Test_eventhandler()
-  call assert_equal(0, eventhandler())
-endfunc
-
-func Test_bufadd_bufload()
-  call assert_equal(0, bufexists('someName'))
-  let buf = bufadd('someName')
-  call assert_notequal(0, buf)
-  call assert_equal(1, bufexists('someName'))
-  call assert_equal(0, getbufvar(buf, '&buflisted'))
-  call assert_equal(0, bufloaded(buf))
-  call bufload(buf)
-  call assert_equal(1, bufloaded(buf))
-  call assert_equal([''], getbufline(buf, 1, '$'))
-
-  let curbuf = bufnr('')
-  eval ['some', 'text']->writefile('XotherName')
-  let buf = 'XotherName'->bufadd()
-  call assert_notequal(0, buf)
-  eval 'XotherName'->bufexists()->assert_equal(1)
-  call assert_equal(0, getbufvar(buf, '&buflisted'))
-  call assert_equal(0, bufloaded(buf))
-  eval buf->bufload()
-  call assert_equal(1, bufloaded(buf))
-  call assert_equal(['some', 'text'], getbufline(buf, 1, '$'))
-  call assert_equal(curbuf, bufnr(''))
-
-  let buf1 = bufadd('')
-  let buf2 = bufadd('')
-  call assert_notequal(0, buf1)
-  call assert_notequal(0, buf2)
-  call assert_notequal(buf1, buf2)
-  call assert_equal(1, bufexists(buf1))
-  call assert_equal(1, bufexists(buf2))
-  call assert_equal(0, bufloaded(buf1))
-  exe 'bwipe ' .. buf1
-  call assert_equal(0, bufexists(buf1))
-  call assert_equal(1, bufexists(buf2))
-  exe 'bwipe ' .. buf2
-  call assert_equal(0, bufexists(buf2))
-
-  " When 'buftype' is "nofile" then bufload() does not read the file.
-  " Other values too.
-  for val in [['nofile', 0],
-            \ ['nowrite', 1],
-            \ ['acwrite', 1],
-            \ ['quickfix', 0],
-            \ ['help', 1],
-            "\ ['terminal', 0],
-            \ ['prompt', 0],
-            "\ ['popup', 0],
-            \ ]
-    bwipe! XotherName
-    let buf = bufadd('XotherName')
-    call setbufvar(buf, '&bt', val[0])
-    call bufload(buf)
-    call assert_equal(val[1] ? ['some', 'text'] : [''], getbufline(buf, 1, '$'), val[0])
-  endfor
-
-  bwipe someName
-  bwipe XotherName
-  call assert_equal(0, bufexists('someName'))
-  call delete('XotherName')
-endfunc
-
-func Test_range()
-  " destructuring
-  let [x, y] = range(2)
-  call assert_equal([0, 1], [x, y])
-
-  " index
-  call assert_equal(4, range(1, 10)[3])
-
-  " add()
-  call assert_equal([0, 1, 2, 3], add(range(3), 3))
-  call assert_equal([0, 1, 2, [0, 1, 2]], add([0, 1, 2], range(3)))
-  call assert_equal([0, 1, 2, [0, 1, 2]], add(range(3), range(3)))
-
-  " append()
-  new
-  call append('.', range(5))
-  call assert_equal(['', '0', '1', '2', '3', '4'], getline(1, '$'))
-  bwipe!
-
-  " appendbufline()
-  new
-  call appendbufline(bufnr(''), '.', range(5))
-  call assert_equal(['0', '1', '2', '3', '4', ''], getline(1, '$'))
-  bwipe!
-
-  " call()
-  func TwoArgs(a, b)
-    return [a:a, a:b]
-  endfunc
-  call assert_equal([0, 1], call('TwoArgs', range(2)))
-
-  " col()
-  new
-  call setline(1, ['foo', 'bar'])
-  call assert_equal(2, col(range(1, 2)))
-  bwipe!
-
-  " complete()
-  execute "normal! a\<C-r>=[complete(col('.'), range(10)), ''][1]\<CR>"
-  " complete_info()
-  execute "normal! a\<C-r>=[complete(col('.'), range(10)), ''][1]\<CR>\<C-r>=[complete_info(range(5)), ''][1]\<CR>"
-
-  " copy()
-  call assert_equal([1, 2, 3], copy(range(1, 3)))
-
-  " count()
-  call assert_equal(0, count(range(0), 3))
-  call assert_equal(0, count(range(2), 3))
-  call assert_equal(1, count(range(5), 3))
-
-  " cursor()
-  new
-  call setline(1, ['aaa', 'bbb', 'ccc'])
-  call cursor(range(1, 2))
-  call assert_equal([2, 1], [col('.'), line('.')])
-  bwipe!
-
-  " deepcopy()
-  call assert_equal([1, 2, 3], deepcopy(range(1, 3)))
-
-  " empty()
-  call assert_true(empty(range(0)))
-  call assert_false(empty(range(2)))
-
-  " execute()
-  new
-  call setline(1, ['aaa', 'bbb', 'ccc'])
-  call execute(range(3))
-  call assert_equal(2, line('.'))
-  bwipe!
-
-  " extend()
-  call assert_equal([1, 2, 3, 4], extend([1], range(2, 4)))
-  call assert_equal([1, 2, 3, 4], extend(range(1, 1), range(2, 4)))
-  call assert_equal([1, 2, 3, 4], extend(range(1, 1), [2, 3, 4]))
-
-  " filter()
-  call assert_equal([1, 3], filter(range(5), 'v:val % 2'))
-
-  " funcref()
-  call assert_equal([0, 1], funcref('TwoArgs', range(2))())
-
-  " function()
-  call assert_equal([0, 1], function('TwoArgs', range(2))())
-
-  " garbagecollect()
-  let thelist = [1, range(2), 3]
-  let otherlist = range(3)
-  call test_garbagecollect_now()
-
-  " get()
-  call assert_equal(4, get(range(1, 10), 3))
-  call assert_equal(-1, get(range(1, 10), 42, -1))
-
-  " index()
-  call assert_equal(1, index(range(1, 5), 2))
-  call assert_fails("echo index([1, 2], 1, [])", 'E745:')
-
-  " insert()
-  call assert_equal([42, 1, 2, 3, 4, 5], insert(range(1, 5), 42))
-  call assert_equal([42, 1, 2, 3, 4, 5], insert(range(1, 5), 42, 0))
-  call assert_equal([1, 42, 2, 3, 4, 5], insert(range(1, 5), 42, 1))
-  call assert_equal([1, 2, 3, 4, 42, 5], insert(range(1, 5), 42, 4))
-  call assert_equal([1, 2, 3, 4, 42, 5], insert(range(1, 5), 42, -1))
-  call assert_equal([1, 2, 3, 4, 5, 42], insert(range(1, 5), 42, 5))
-
-  " join()
-  call assert_equal('0 1 2 3 4', join(range(5)))
-
-  " json_encode()
-  " call assert_equal('[0,1,2,3]', json_encode(range(4)))
-  call assert_equal('[0, 1, 2, 3]', json_encode(range(4)))
-
-  " len()
-  call assert_equal(0, len(range(0)))
-  call assert_equal(2, len(range(2)))
-  call assert_equal(5, len(range(0, 12, 3)))
-  call assert_equal(4, len(range(3, 0, -1)))
-
-  " list2str()
-  call assert_equal('ABC', list2str(range(65, 67)))
-  call assert_fails('let s = list2str(5)', 'E474:')
-
-  " lock()
-  let thelist = range(5)
-  lockvar thelist
-
-  " map()
-  call assert_equal([0, 2, 4, 6, 8], map(range(5), 'v:val * 2'))
-
-  " match()
-  call assert_equal(3, match(range(5), 3))
-
-  " matchaddpos()
-  highlight MyGreenGroup ctermbg=green guibg=green
-  call matchaddpos('MyGreenGroup', range(line('.'), line('.')))
-
-  " matchend()
-  call assert_equal(4, matchend(range(5), '4'))
-  call assert_equal(3, matchend(range(1, 5), '4'))
-  call assert_equal(-1, matchend(range(1, 5), '42'))
-
-  " matchstrpos()
-  call assert_equal(['4', 4, 0, 1], matchstrpos(range(5), '4'))
-  call assert_equal(['4', 3, 0, 1], matchstrpos(range(1, 5), '4'))
-  call assert_equal(['', -1, -1, -1], matchstrpos(range(1, 5), '42'))
-
-  " max() reverse()
-  call assert_equal(0, max(range(0)))
-  call assert_equal(0, max(range(10, 9)))
-  call assert_equal(9, max(range(10)))
-  call assert_equal(18, max(range(0, 20, 3)))
-  call assert_equal(20, max(range(20, 0, -3)))
-  call assert_equal(99999, max(range(100000)))
-  call assert_equal(99999, max(range(99999, 0, -1)))
-  call assert_equal(99999, max(reverse(range(100000))))
-  call assert_equal(99999, max(reverse(range(99999, 0, -1))))
-
-  " min() reverse()
-  call assert_equal(0, min(range(0)))
-  call assert_equal(0, min(range(10, 9)))
-  call assert_equal(5, min(range(5, 10)))
-  call assert_equal(5, min(range(5, 10, 3)))
-  call assert_equal(2, min(range(20, 0, -3)))
-  call assert_equal(0, min(range(100000)))
-  call assert_equal(0, min(range(99999, 0, -1)))
-  call assert_equal(0, min(reverse(range(100000))))
-  call assert_equal(0, min(reverse(range(99999, 0, -1))))
-
-  " remove()
-  call assert_equal(1, remove(range(1, 10), 0))
-  call assert_equal(2, remove(range(1, 10), 1))
-  call assert_equal(9, remove(range(1, 10), 8))
-  call assert_equal(10, remove(range(1, 10), 9))
-  call assert_equal(10, remove(range(1, 10), -1))
-  call assert_equal([3, 4, 5], remove(range(1, 10), 2, 4))
-
-  " repeat()
-  call assert_equal([0, 1, 2, 0, 1, 2], repeat(range(3), 2))
-  call assert_equal([0, 1, 2], repeat(range(3), 1))
-  call assert_equal([], repeat(range(3), 0))
-  call assert_equal([], repeat(range(5, 4), 2))
-  call assert_equal([], repeat(range(5, 4), 0))
-
-  " reverse()
-  call assert_equal([2, 1, 0], reverse(range(3)))
-  call assert_equal([0, 1, 2, 3], reverse(range(3, 0, -1)))
-  call assert_equal([9, 8, 7, 6, 5, 4, 3, 2, 1, 0], reverse(range(10)))
-  call assert_equal([20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10], reverse(range(10, 20)))
-  call assert_equal([16, 13, 10], reverse(range(10, 18, 3)))
-  call assert_equal([19, 16, 13, 10], reverse(range(10, 19, 3)))
-  call assert_equal([19, 16, 13, 10], reverse(range(10, 20, 3)))
-  call assert_equal([11, 14, 17, 20], reverse(range(20, 10, -3)))
-  call assert_equal([], reverse(range(0)))
-
-  " TODO: setpos()
-  " new
-  " call setline(1, repeat([''], bufnr('')))
-  " call setline(bufnr('') + 1, repeat('x', bufnr('') * 2 + 6))
-  " call setpos('x', range(bufnr(''), bufnr('') + 3))
-  " bwipe!
-
-  " setreg()
-  call setreg('a', range(3))
-  call assert_equal("0\n1\n2\n", getreg('a'))
-
-  " settagstack()
-  call settagstack(1, #{items : range(4)})
-
-  " sign_define()
-  call assert_fails("call sign_define(range(5))", "E715:")
-  call assert_fails("call sign_placelist(range(5))", "E715:")
-
-  " sign_undefine()
-  " call assert_fails("call sign_undefine(range(5))", "E908:")
-  call assert_fails("call sign_undefine(range(5))", "E155:")
-
-  " sign_unplacelist()
-  call assert_fails("call sign_unplacelist(range(5))", "E715:")
-
-  " sort()
-  call assert_equal([0, 1, 2, 3, 4, 5], sort(range(5, 0, -1)))
-
-  " string()
-  call assert_equal('[0, 1, 2, 3, 4]', string(range(5)))
-
-  " taglist() with 'tagfunc'
-  func TagFunc(pattern, flags, info)
-    return range(10)
-  endfunc
-  set tagfunc=TagFunc
-  call assert_fails("call taglist('asdf')", 'E987:')
-  set tagfunc=
-
-  " term_start()
-  if has('terminal') && has('termguicolors')
-    call assert_fails('call term_start(range(3, 4))', 'E474:')
-    let g:terminal_ansi_colors = range(16)
-    if has('win32')
-      let cmd = "cmd /c dir"
-    else
-      let cmd = "ls"
-    endif
-    call assert_fails('call term_start("' .. cmd .. '", #{term_finish: "close"})', 'E475:')
-    unlet g:terminal_ansi_colors
-  endif
-
-  " type()
-  call assert_equal(v:t_list, type(range(5)))
-
-  " uniq()
-  call assert_equal([0, 1, 2, 3, 4], uniq(range(5)))
-
-  " errors
-  call assert_fails('let x=range(2, 8, 0)', 'E726:')
-  call assert_fails('let x=range(3, 1)', 'E727:')
-  call assert_fails('let x=range(1, 3, -2)', 'E727:')
-  call assert_fails('let x=range([])', 'E745:')
-  call assert_fails('let x=range(1, [])', 'E745:')
-  call assert_fails('let x=range(1, 4, [])', 'E745:')
-endfunc
-
-func Test_garbagecollect_now_fails()
-  let v:testing = 0
-  call assert_fails('call test_garbagecollect_now()', 'E1142:')
-  let v:testing = 1
-endfunc
-
-" Test for the eval() function
-func Test_eval()
-  call assert_fails("call eval('5 a')", 'E488:')
-endfunc
-
-" Test for the keytrans() function
-func Test_keytrans()
-  call assert_equal('<Space>', keytrans(' '))
-  call assert_equal('<lt>', keytrans('<'))
-  call assert_equal('<lt>Tab>', keytrans('<Tab>'))
-  call assert_equal('<Tab>', keytrans("\<Tab>"))
-  call assert_equal('<C-V>', keytrans("\<C-V>"))
-  call assert_equal('<BS>', keytrans("\<BS>"))
-  call assert_equal('<Home>', keytrans("\<Home>"))
-  call assert_equal('<C-Home>', keytrans("\<C-Home>"))
-  call assert_equal('<M-Home>', keytrans("\<M-Home>"))
-  call assert_equal('<C-Space>', keytrans("\<C-Space>"))
-  call assert_equal('<M-Space>', keytrans("\<*M-Space>"))
-  call assert_equal('<M-x>', "\<*M-x>"->keytrans())
-  call assert_equal('<C-I>', "\<*C-I>"->keytrans())
-  call assert_equal('<S-3>', "\<*S-3>"->keytrans())
-  call assert_equal('π', 'π'->keytrans())
-  call assert_equal('<M-π>', "\<M-π>"->keytrans())
-  call assert_equal('ě', 'ě'->keytrans())
-  call assert_equal('<M-ě>', "\<M-ě>"->keytrans())
-  call assert_equal('', ''->keytrans())
-  call assert_equal('', v:_null_string->keytrans())
-  call assert_fails('call keytrans(1)', 'E1174:')
-  call assert_fails('call keytrans()', 'E119:')
-endfunc
-
-" Test for the nr2char() function
-func Test_nr2char()
-  " set encoding=latin1
-  call assert_equal('@', nr2char(64))
-  set encoding=utf8
-  call assert_equal('a', nr2char(97, 1))
-  call assert_equal('a', nr2char(97, 0))
-
-  call assert_equal("\x80\xfc\b" .. nr2char(0x100000), eval('"\<M-' .. nr2char(0x100000) .. '>"'))
-  call assert_equal("\x80\xfc\b" .. nr2char(0x40000000), eval('"\<M-' .. nr2char(0x40000000) .. '>"'))
-endfunc
-
-" Test for screenattr(), screenchar() and screenchars() functions
-func Test_screen_functions()
-  call assert_equal(-1, screenattr(-1, -1))
-  call assert_equal(-1, screenchar(-1, -1))
-  call assert_equal([], screenchars(-1, -1))
-endfunc
-
-" Test for getcurpos() and setpos()
-func Test_getcurpos_setpos()
-  new
-  call setline(1, ['012345678', '012345678'])
-  normal gg6l
-  let sp = getcurpos()
-  normal 0
-  call setpos('.', sp)
-  normal jyl
-  call assert_equal('6', @")
-  call assert_equal(-1, setpos('.', v:_null_list))
-  call assert_equal(-1, setpos('.', {}))
-
-  let winid = win_getid()
-  normal G$
-  let pos = getcurpos()
-  wincmd w
-  call assert_equal(pos, getcurpos(winid))
-
-  wincmd w
-  close!
-
-  call assert_equal(getcurpos(), getcurpos(0))
-  call assert_equal([0, 0, 0, 0, 0], getcurpos(-1))
-  call assert_equal([0, 0, 0, 0, 0], getcurpos(1999))
-endfunc
-
-func Test_getmousepos()
-  enew!
-  call setline(1, "\t\t\t1234")
-  call Ntest_setmouse(1, 1)
-  call assert_equal(#{
-        \ screenrow: 1,
-        \ screencol: 1,
-        \ winid: win_getid(),
-        \ winrow: 1,
-        \ wincol: 1,
-        \ line: 1,
-        \ column: 1,
-        \ }, getmousepos())
-  call Ntest_setmouse(1, 25)
-  call assert_equal(#{
-        \ screenrow: 1,
-        \ screencol: 25,
-        \ winid: win_getid(),
-        \ winrow: 1,
-        \ wincol: 25,
-        \ line: 1,
-        \ column: 4,
-        \ }, getmousepos())
-  call Ntest_setmouse(1, 50)
-  call assert_equal(#{
-        \ screenrow: 1,
-        \ screencol: 50,
-        \ winid: win_getid(),
-        \ winrow: 1,
-        \ wincol: 50,
-        \ line: 1,
-        \ column: 8,
-        \ }, getmousepos())
-
-  " If the mouse is positioned past the last buffer line, "line" and "column"
-  " should act like it's positioned on the last buffer line.
-  call Ntest_setmouse(2, 25)
-  call assert_equal(#{
-        \ screenrow: 2,
-        \ screencol: 25,
-        \ winid: win_getid(),
-        \ winrow: 2,
-        \ wincol: 25,
-        \ line: 1,
-        \ column: 4,
-        \ }, getmousepos())
-  call Ntest_setmouse(2, 50)
-  call assert_equal(#{
-        \ screenrow: 2,
-        \ screencol: 50,
-        \ winid: win_getid(),
-        \ winrow: 2,
-        \ wincol: 50,
-        \ line: 1,
-        \ column: 8,
-        \ }, getmousepos())
-  bwipe!
-endfunc
-
-" Test for glob()
-func Test_glob()
-  call assert_equal('', glob(v:_null_string))
-  call assert_equal('', globpath(v:_null_string, v:_null_string))
-  call assert_fails("let x = globpath(&rtp, 'syntax/c.vim', [])", 'E745:')
-
-  call writefile([], 'Xglob1')
-  call writefile([], 'XGLOB2')
-  set wildignorecase
-  " Sort output of glob() otherwise we end up with different
-  " ordering depending on whether file system is case-sensitive.
-  call assert_equal(['XGLOB2', 'Xglob1'], sort(glob('Xglob[12]', 0, 1)))
-  " wildignorecase shall be applied even when the pattern contains no wildcards.
-  call assert_equal('XGLOB2', glob('xglob2'))
-  set wildignorecase&
-
-  call delete('Xglob1')
-  call delete('XGLOB2')
-
-  call assert_fails("call glob('*', 0, {})", 'E728:')
-endfunc
-
-func HasDefault(msg = 'msg')
-  return a:msg
-endfunc
-
-func Test_default_arg_value()
-  call assert_equal('msg', HasDefault())
-endfunc
-
-" Test for gettext()
-func Test_gettext()
-  call assert_fails('call gettext(1)', 'E475:')
-endfunc
-
-func Test_builtin_check()
-  call assert_fails('let g:["trim"] = {x -> " " .. x}', 'E704:')
-  call assert_fails('let g:.trim = {x -> " " .. x}', 'E704:')
-  call assert_fails('let l:["trim"] = {x -> " " .. x}', 'E704:')
-  call assert_fails('let l:.trim = {x -> " " .. x}', 'E704:')
-  let lines =<< trim END
-    vim9script
-    var s:trim = (x) => " " .. x
-  END
-  call CheckScriptFailure(lines, 'E704:')
-
-  call assert_fails('call extend(g:, #{foo: { -> "foo" }})', 'E704:')
-  let g:bar = 123
-  call extend(g:, #{bar: { -> "foo" }}, "keep")
-  call assert_fails('call extend(g:, #{bar: { -> "foo" }}, "force")', 'E704:')
-  unlet g:bar
-
-  call assert_fails('call extend(l:, #{foo: { -> "foo" }})', 'E704:')
-  let bar = 123
-  call extend(l:, #{bar: { -> "foo" }}, "keep")
-  call assert_fails('call extend(l:, #{bar: { -> "foo" }}, "force")', 'E704:')
-  unlet bar
-
-  call assert_fails('call extend(g:, #{foo: function("extend")})', 'E704:')
-  let g:bar = 123
-  call extend(g:, #{bar: function("extend")}, "keep")
-  call assert_fails('call extend(g:, #{bar: function("extend")}, "force")', 'E704:')
-  unlet g:bar
-
-  call assert_fails('call extend(l:, #{foo: function("extend")})', 'E704:')
-  let bar = 123
-  call extend(l:, #{bar: function("extend")}, "keep")
-  call assert_fails('call extend(l:, #{bar: function("extend")}, "force")', 'E704:')
-  unlet bar
-endfunc
-
-
-" vim: shiftwidth=2 sts=2 expandtab