19 files changed, 540 insertions, 13 deletions

diff --git a/src/nvim/testdir/check.vim b/src/nvim/testdir/check.vim
index 14bab33a2f..ab26dddbe0 100644
--- a/src/nvim/testdir/check.vim
+++ b/src/nvim/testdir/check.vim
@@ -12,9 +12,9 @@ endfunc
 " Command to check for the absence of a feature.
 command -nargs=1 CheckNotFeature call CheckNotFeature(<f-args>)
 func CheckNotFeature(name)
-  if !has(a:name, 1)
-    throw 'Checking for non-existent feature ' .. a:name
-  endif
+  " if !has(a:name, 1)
+  "   throw 'Checking for non-existent feature ' .. a:name
+  " endif
   if has(a:name)
     throw 'Skipped: ' .. a:name .. ' feature present'
   endif
diff --git a/src/nvim/testdir/test_buffer.vim b/src/nvim/testdir/test_buffer.vim
index 40111fdf06..a31cdbb49a 100644
--- a/src/nvim/testdir/test_buffer.vim
+++ b/src/nvim/testdir/test_buffer.vim
@@ -1,5 +1,7 @@
 " Tests for Vim buffer
 
+source check.vim
+
 func Test_buffer_error()
   new foo1
   new foo2
@@ -30,4 +32,33 @@ func Test_balt()
   call assert_equal('OtherBuffer', bufname())
 endfunc
 
+" Test for buffer match URL(scheme) check
+" scheme is alpha and inner hyphen only.
+func Test_buffer_scheme()
+  CheckMSWindows
+
+  set noshellslash
+  %bwipe!
+  let bufnames = [
+    \ #{id: 'b0', name: 'test://xyz/foo/b0'    , match: 1},
+    \ #{id: 'b1', name: 'test+abc://xyz/foo/b1', match: 0},
+    \ #{id: 'b2', name: 'test_abc://xyz/foo/b2', match: 0},
+    \ #{id: 'b3', name: 'test-abc://xyz/foo/b3', match: 1},
+    \ #{id: 'b4', name: '-test://xyz/foo/b4'   , match: 0},
+    \ #{id: 'b5', name: 'test-://xyz/foo/b5'   , match: 0},
+    \]
+  for buf in bufnames
+    new `=buf.name`
+    if buf.match
+      call assert_equal(buf.name,    getbufinfo(buf.id)[0].name)
+    else
+      " slashes will have become backslashes
+      call assert_notequal(buf.name, getbufinfo(buf.id)[0].name)
+    endif
+    bwipe
+  endfor
+
+  set shellslash&
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_conceal.vim b/src/nvim/testdir/test_conceal.vim
index 1306dbe5cf..bffc2f49d3 100644
--- a/src/nvim/testdir/test_conceal.vim
+++ b/src/nvim/testdir/test_conceal.vim
@@ -4,10 +4,10 @@ source check.vim
 CheckFeature conceal
 
 source screendump.vim
-" CheckScreendump
 
 func Test_conceal_two_windows()
   CheckScreendump
+
   let code =<< trim [CODE]
     let lines = ["one one one one one", "two |hidden| here", "three |hidden| three"]
     call setline(1, lines)
@@ -111,6 +111,7 @@ endfunc
 
 func Test_conceal_with_cursorline()
   CheckScreendump
+
   " Opens a help window, where 'conceal' is set, switches to the other window
   " where 'cursorline' needs to be updated when the cursor moves.
   let code =<< trim [CODE]
@@ -139,6 +140,7 @@ endfunc
 
 func Test_conceal_resize_term()
   CheckScreendump
+
   let code =<< trim [CODE]
     call setline(1, '`one` `two` `three` `four` `five`, the backticks should be concealed')
     setl cocu=n cole=3
diff --git a/src/nvim/testdir/test_edit.vim b/src/nvim/testdir/test_edit.vim
index fc4e80f0d6..c1f74e7675 100644
--- a/src/nvim/testdir/test_edit.vim
+++ b/src/nvim/testdir/test_edit.vim
@@ -1006,16 +1006,16 @@ func Test_edit_DROP()
 endfunc
 
 func Test_edit_CTRL_V()
-  if has("ebcdic")
-    return
-  endif
+  CheckNotFeature ebcdic
+
   new
   call setline(1, ['abc'])
   call cursor(2, 1)
+
   " force some redraws
   set showmode showcmd
-  "call test_override_char_avail(1)
-  " call test_override('ALL', 1)
+  " call test_override('char_avail', 1)
+
   call feedkeys("A\<c-v>\<c-n>\<c-v>\<c-l>\<c-v>\<c-b>\<esc>", 'tnix')
   call assert_equal(["abc\x0e\x0c\x02"], getline(1, '$'))
 
@@ -1028,8 +1028,19 @@ func Test_edit_CTRL_V()
     set norl
   endif
 
-  " call test_override('ALL', 0)
   set noshowmode showcmd
+  " call test_override('char_avail', 0)
+
+  " No modifiers should be applied to the char typed using i_CTRL-V_digit.
+  call feedkeys(":append\<CR>\<C-V>76c\<C-V>76\<C-F2>\<C-V>u3c0j\<C-V>u3c0\<M-F3>\<CR>.\<CR>", 'tnix')
+  call assert_equal('LcL<C-F2>πjπ<M-F3>', getline(2))
+
+  if has('osx')
+    " A char with a modifier should not be a valid char for i_CTRL-V_digit.
+    call feedkeys("o\<C-V>\<D-j>\<C-V>\<D-1>\<C-V>\<D-o>\<C-V>\<D-x>\<C-V>\<D-u>", 'tnix')
+    call assert_equal('<D-j><D-1><D-o><D-x><D-u>', getline(3))
+  endif
+
   bw!
 endfunc
 
diff --git a/src/nvim/testdir/test_ex_mode.vim b/src/nvim/testdir/test_ex_mode.vim
index 92e0559618..78663f7deb 100644
--- a/src/nvim/testdir/test_ex_mode.vim
+++ b/src/nvim/testdir/test_ex_mode.vim
@@ -98,4 +98,14 @@ func Test_ex_mode_count_overflow()
   call delete('Xexmodescript')
 endfunc
 
+func Test_ex_mode_large_indent()
+  new
+  set ts=500 ai
+  call setline(1, "\t")
+  exe "normal gQi\<CR>."
+  set ts=8 noai
+  bwipe!
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_expr.vim b/src/nvim/testdir/test_expr.vim
index 1d7fd3e385..5b10e691e5 100644
--- a/src/nvim/testdir/test_expr.vim
+++ b/src/nvim/testdir/test_expr.vim
@@ -283,6 +283,71 @@ function Test_printf_misc()
   call assert_equal('🐍', printf('%.2S', '🐍🐍'))
   call assert_equal('', printf('%.1S', '🐍🐍'))
 
+  call assert_equal('[    あいう]', printf('[%10.6S]', 'あいうえお'))
+  call assert_equal('[  あいうえ]', printf('[%10.8S]', 'あいうえお'))
+  call assert_equal('[あいうえお]', printf('[%10.10S]', 'あいうえお'))
+  call assert_equal('[あいうえお]', printf('[%10.12S]', 'あいうえお'))
+
+  call assert_equal('あいう', printf('%S', 'あいう'))
+  call assert_equal('あいう', printf('%#S', 'あいう'))
+
+  call assert_equal('あb', printf('%2S', 'あb'))
+  call assert_equal('あb', printf('%.4S', 'あb'))
+  call assert_equal('あ', printf('%.2S', 'あb'))
+  call assert_equal(' あb', printf('%4S', 'あb'))
+  call assert_equal('0あb', printf('%04S', 'あb'))
+  call assert_equal('あb ', printf('%-4S', 'あb'))
+  call assert_equal('あ  ', printf('%-4.2S', 'あb'))
+
+  call assert_equal('aい', printf('%2S', 'aい'))
+  call assert_equal('aい', printf('%.4S', 'aい'))
+  call assert_equal('a', printf('%.2S', 'aい'))
+  call assert_equal(' aい', printf('%4S', 'aい'))
+  call assert_equal('0aい', printf('%04S', 'aい'))
+  call assert_equal('aい ', printf('%-4S', 'aい'))
+  call assert_equal('a   ', printf('%-4.2S', 'aい'))
+
+  call assert_equal('[あいう]', printf('[%05S]', 'あいう'))
+  call assert_equal('[あいう]', printf('[%06S]', 'あいう'))
+  call assert_equal('[0あいう]', printf('[%07S]', 'あいう'))
+
+  call assert_equal('[あiう]', printf('[%05S]', 'あiう'))
+  call assert_equal('[0あiう]', printf('[%06S]', 'あiう'))
+  call assert_equal('[00あiう]', printf('[%07S]', 'あiう'))
+
+  call assert_equal('[0あい]', printf('[%05.4S]', 'あいう'))
+  call assert_equal('[00あい]', printf('[%06.4S]', 'あいう'))
+  call assert_equal('[000あい]', printf('[%07.4S]', 'あいう'))
+
+  call assert_equal('[00あi]', printf('[%05.4S]', 'あiう'))
+  call assert_equal('[000あi]', printf('[%06.4S]', 'あiう'))
+  call assert_equal('[0000あi]', printf('[%07.4S]', 'あiう'))
+
+  call assert_equal('[0あい]', printf('[%05.5S]', 'あいう'))
+  call assert_equal('[00あい]', printf('[%06.5S]', 'あいう'))
+  call assert_equal('[000あい]', printf('[%07.5S]', 'あいう'))
+
+  call assert_equal('[あiう]', printf('[%05.5S]', 'あiう'))
+  call assert_equal('[0あiう]', printf('[%06.5S]', 'あiう'))
+  call assert_equal('[00あiう]', printf('[%07.5S]', 'あiう'))
+
+  call assert_equal('[0000000000]', printf('[%010.0S]', 'あいう'))
+  call assert_equal('[0000000000]', printf('[%010.1S]', 'あいう'))
+  call assert_equal('[00000000あ]', printf('[%010.2S]', 'あいう'))
+  call assert_equal('[00000000あ]', printf('[%010.3S]', 'あいう'))
+  call assert_equal('[000000あい]', printf('[%010.4S]', 'あいう'))
+  call assert_equal('[000000あい]', printf('[%010.5S]', 'あいう'))
+  call assert_equal('[0000あいう]', printf('[%010.6S]', 'あいう'))
+  call assert_equal('[0000あいう]', printf('[%010.7S]', 'あいう'))
+
+  call assert_equal('[0000000000]', printf('[%010.1S]', 'あiう'))
+  call assert_equal('[00000000あ]', printf('[%010.2S]', 'あiう'))
+  call assert_equal('[0000000あi]', printf('[%010.3S]', 'あiう'))
+  call assert_equal('[0000000あi]', printf('[%010.4S]', 'あiう'))
+  call assert_equal('[00000あiう]', printf('[%010.5S]', 'あiう'))
+  call assert_equal('[00000あiう]', printf('[%010.6S]', 'あiう'))
+  call assert_equal('[00000あiう]', printf('[%010.7S]', 'あiう'))
+
   call assert_equal('1%', printf('%d%%', 1))
 endfunc
 
diff --git a/src/nvim/testdir/test_filetype.vim b/src/nvim/testdir/test_filetype.vim
index 8930d62fd3..eb4824aa32 100644
--- a/src/nvim/testdir/test_filetype.vim
+++ b/src/nvim/testdir/test_filetype.vim
@@ -190,8 +190,11 @@ let s:filename_checks = {
     \ 'freebasic': ['file.fb'],
     \ 'fsharp': ['file.fs', 'file.fsi', 'file.fsx'],
     \ 'fstab': ['fstab', 'mtab'],
+    \ 'fusion': ['file.fusion'],
     \ 'fvwm': ['/.fvwm/file', 'any/.fvwm/file'],
     \ 'gdb': ['.gdbinit', 'gdbinit'],
+    \ 'gdresource': ['file.tscn', 'file.tres'],
+    \ 'gdscript': ['file.gd'],
     \ 'gdmo': ['file.mo', 'file.gdmo'],
     \ 'gedcom': ['file.ged', 'lltxxxxx.txt', '/tmp/lltmp', '/tmp/lltmp-file', 'any/tmp/lltmp', 'any/tmp/lltmp-file'],
     \ 'gemtext': ['file.gmi', 'file.gemini'],
@@ -202,28 +205,36 @@ let s:filename_checks = {
     \ 'gitrebase': ['git-rebase-todo'],
     \ 'gitsendemail': ['.gitsendemail.msg.xxxxxx'],
     \ 'gkrellmrc': ['gkrellmrc', 'gkrellmrc_x'],
+    \ 'glsl': ['file.glsl'],
     \ 'gnash': ['gnashrc', '.gnashrc', 'gnashpluginrc', '.gnashpluginrc'],
     \ 'gnuplot': ['file.gpi', '.gnuplot'],
     \ 'go': ['file.go'],
     \ 'gomod': ['go.mod'],
+    \ 'gowork': ['go.work'],
     \ 'gp': ['file.gp', '.gprc'],
     \ 'gpg': ['/.gnupg/options', '/.gnupg/gpg.conf', '/usr/any/gnupg/options.skel', 'any/.gnupg/gpg.conf', 'any/.gnupg/options', 'any/usr/any/gnupg/options.skel'],
     \ 'grads': ['file.gs'],
+    \ 'graphql': ['file.graphql', 'file.graphqls', 'file.gql'],
     \ 'gretl': ['file.gretl'],
     \ 'groovy': ['file.gradle', 'file.groovy'],
     \ 'group': ['any/etc/group', 'any/etc/group-', 'any/etc/group.edit', 'any/etc/gshadow', 'any/etc/gshadow-', 'any/etc/gshadow.edit', 'any/var/backups/group.bak', 'any/var/backups/gshadow.bak', '/etc/group', '/etc/group-', '/etc/group.edit', '/etc/gshadow', '/etc/gshadow-', '/etc/gshadow.edit', '/var/backups/group.bak', '/var/backups/gshadow.bak'],
     \ 'grub': ['/boot/grub/menu.lst', '/boot/grub/grub.conf', '/etc/grub.conf', 'any/boot/grub/grub.conf', 'any/boot/grub/menu.lst', 'any/etc/grub.conf'],
     \ 'gsp': ['file.gsp'],
     \ 'gtkrc': ['.gtkrc', 'gtkrc', '.gtkrc-file', 'gtkrc-file'],
+    \ 'hack': ['file.hack', 'file.hackpartial'],
     \ 'haml': ['file.haml'],
     \ 'hamster': ['file.hsm'],
+    \ 'handlebars': ['file.hbs'],
     \ 'haskell': ['file.hs', 'file.hsc', 'file.hs-boot', 'file.hsig'],
     \ 'haste': ['file.ht'],
     \ 'hastepreproc': ['file.htpp'],
     \ 'hb': ['file.hb'],
+    \ 'hcl': ['file.hcl'],
     \ 'hercules': ['file.vc', 'file.ev', 'file.sum', 'file.errsum'],
+    \ 'heex': ['file.heex'],
     \ 'hex': ['file.hex', 'file.h32'],
     \ 'hgcommit': ['hg-editor-file.txt'],
+    \ 'hjson': ['file.hjson'],
     \ 'hog': ['file.hog', 'snort.conf', 'vision.conf'],
     \ 'hollywood': ['file.hws'],
     \ 'hostconf': ['/etc/host.conf', 'any/etc/host.conf'],
@@ -279,6 +290,7 @@ let s:filename_checks = {
     \ 'latte': ['file.latte', 'file.lte'],
     \ 'ld': ['file.ld'],
     \ 'ldif': ['file.ldif'],
+    \ 'ledger': ['file.ldg', 'file.ledger', 'file.journal'],
     \ 'less': ['file.less'],
     \ 'lex': ['file.lex', 'file.l', 'file.lxx', 'file.l++'],
     \ 'lftp': ['lftp.conf', '.lftprc', 'anylftp/rc', 'lftp/rc', 'some-lftp/rc'],
@@ -352,6 +364,7 @@ let s:filename_checks = {
     \ 'netrc': ['.netrc'],
     \ 'nginx': ['file.nginx', 'nginxfile.conf', 'filenginx.conf', 'any/etc/nginx/file', 'any/usr/local/nginx/conf/file', 'any/nginx/file.conf'],
     \ 'ninja': ['file.ninja'],
+    \ 'nix': ['file.nix'],
     \ 'nqc': ['file.nqc'],
     \ 'nroff': ['file.tr', 'file.nr', 'file.roff', 'file.tmac', 'file.mom', 'tmac.file'],
     \ 'nsis': ['file.nsi', 'file.nsh'],
@@ -394,6 +407,7 @@ let s:filename_checks = {
     \ 'ppd': ['file.ppd'],
     \ 'ppwiz': ['file.it', 'file.ih'],
     \ 'privoxy': ['file.action'],
+    \ 'prisma': ['file.prisma'],
     \ 'proc': ['file.pc'],
     \ 'procmail': ['.procmail', '.procmailrc'],
     \ 'prolog': ['file.pdb'],
@@ -404,10 +418,12 @@ let s:filename_checks = {
     \ 'ps1xml': ['file.ps1xml'],
     \ 'psf': ['file.psf'],
     \ 'psl': ['file.psl'],
+    \ 'pug': ['file.pug'],
     \ 'puppet': ['file.pp'],
     \ 'pyret': ['file.arr'],
     \ 'pyrex': ['file.pyx', 'file.pxd'],
     \ 'python': ['file.py', 'file.pyw', '.pythonstartup', '.pythonrc', 'file.ptl', 'file.pyi', 'SConstruct'],
+    \ 'ql': ['file.ql', 'file.qll'],
     \ 'quake': ['anybaseq2/file.cfg', 'anyid1/file.cfg', 'quake3/file.cfg', 'baseq2/file.cfg', 'id1/file.cfg', 'quake1/file.cfg', 'some-baseq2/file.cfg', 'some-id1/file.cfg', 'some-quake1/file.cfg'],
     \ 'radiance': ['file.rad', 'file.mat'],
     \ 'raku': ['file.pm6', 'file.p6', 'file.t6', 'file.pod6', 'file.raku', 'file.rakumod', 'file.rakudoc', 'file.rakutest'],
@@ -489,6 +505,7 @@ let s:filename_checks = {
     \ 'stata': ['file.ado', 'file.do', 'file.imata', 'file.mata'],
     \ 'stp': ['file.stp'],
     \ 'sudoers': ['any/etc/sudoers', 'sudoers.tmp', '/etc/sudoers', 'any/etc/sudoers.d/file'],
+    \ 'surface': ['file.sface'],
     \ 'svg': ['file.svg'],
     \ 'svn': ['svn-commitfile.tmp', 'svn-commit-file.tmp', 'svn-commit.tmp'],
     \ 'swift': ['file.swift'],
@@ -502,8 +519,10 @@ let s:filename_checks = {
     \ 'taskdata': ['pending.data', 'completed.data', 'undo.data'],
     \ 'taskedit': ['file.task'],
     \ 'tcl': ['file.tcl', 'file.tm', 'file.tk', 'file.itcl', 'file.itk', 'file.jacl', '.tclshrc', 'tclsh.rc', '.wishrc'],
+    \ 'teal': ['file.tl'],
     \ 'teraterm': ['file.ttl'],
     \ 'terminfo': ['file.ti'],
+    \ 'terraform': ['file.tfvars'],
     \ 'tex': ['file.latex', 'file.sty', 'file.dtx', 'file.ltx', 'file.bbl'],
     \ 'texinfo': ['file.texinfo', 'file.texi', 'file.txi'],
     \ 'texmf': ['texmf.cnf'],
@@ -511,6 +530,7 @@ let s:filename_checks = {
     \ 'tf': ['file.tf', '.tfrc', 'tfrc'],
     \ 'tidy': ['.tidyrc', 'tidyrc', 'tidy.conf'],
     \ 'tilde': ['file.t.html'],
+    \ 'tla': ['file.tla'],
     \ 'tli': ['file.tli'],
     \ 'tmux': ['tmuxfile.conf', '.tmuxfile.conf', '.tmux-file.conf', '.tmux.conf', 'tmux-file.conf', 'tmux.conf', 'tmux.conf.local'],
     \ 'toml': ['file.toml', 'Gopkg.lock', 'Pipfile', '/home/user/.cargo/config'],
@@ -571,6 +591,7 @@ let s:filename_checks = {
     \ 'xslt': ['file.xsl', 'file.xslt'],
     \ 'yacc': ['file.yy', 'file.yxx', 'file.y++'],
     \ 'yaml': ['file.yaml', 'file.yml'],
+    \ 'yang': ['file.yang'],
     \ 'raml': ['file.raml'],
     \ 'z8a': ['file.z8a'],
     \ 'zig': ['file.zig'],
diff --git a/src/nvim/testdir/test_filter_map.vim b/src/nvim/testdir/test_filter_map.vim
index a52a66ac2f..1cd3a2287b 100644
--- a/src/nvim/testdir/test_filter_map.vim
+++ b/src/nvim/testdir/test_filter_map.vim
@@ -88,4 +88,14 @@ func Test_map_filter_fails()
   call assert_fails("let l = filter('abc', '\"> \" . v:val')", 'E896:')
 endfunc
 
+func Test_map_and_modify()
+  let l = ["abc"]
+  " cannot change the list halfway a map()
+  call assert_fails('call map(l, "remove(l, 0)[0]")', 'E741:')
+
+  let d = #{a: 1, b: 2, c: 3}
+  call assert_fails('call map(d, "remove(d, v:key)[0]")', 'E741:')
+  call assert_fails('echo map(d, {k,v -> remove(d, k)})', 'E741:')
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_ins_complete.vim b/src/nvim/testdir/test_ins_complete.vim
index ce75799551..6803271c03 100644
--- a/src/nvim/testdir/test_ins_complete.vim
+++ b/src/nvim/testdir/test_ins_complete.vim
@@ -445,6 +445,28 @@ func Test_issue_7021()
   set completeslash=
 endfunc
 
+func Test_pum_stopped_by_timer()
+  CheckScreendump
+
+  let lines =<< trim END
+    call setline(1, ['hello', 'hullo', 'heeee', ''])
+    func StartCompl()
+      call timer_start(100, { -> execute('stopinsert') })
+      call feedkeys("Gah\<C-N>")
+    endfunc
+  END
+
+  call writefile(lines, 'Xpumscript')
+  let buf = RunVimInTerminal('-S Xpumscript', #{rows: 12})
+  call term_sendkeys(buf, ":call StartCompl()\<CR>")
+  call TermWait(buf, 200)
+  call term_sendkeys(buf, "k")
+  call VerifyScreenDump(buf, 'Test_pum_stopped_by_timer', {})
+
+  call StopVimInTerminal(buf)
+  call delete('Xpumscript')
+endfunc
+
 func Test_pum_with_folds_two_tabs()
   CheckScreendump
 
diff --git a/src/nvim/testdir/test_listchars.vim b/src/nvim/testdir/test_listchars.vim
index 0bcbd9c4a5..c6e2ebd406 100644
--- a/src/nvim/testdir/test_listchars.vim
+++ b/src/nvim/testdir/test_listchars.vim
@@ -1,6 +1,8 @@
 " Tests for 'listchars' display with 'list' and :list
 
+source check.vim
 source view_util.vim
+source screendump.vim
 
 func Test_listchars()
   enew!
@@ -517,4 +519,34 @@ func Test_listchars_window_local()
   set list& listchars&
 endfunc
 
+func Test_listchars_foldcolumn()
+  CheckScreendump
+
+  let lines =<< trim END
+      call setline(1, ['aaa', '', 'a', 'aaaaaa'])
+      vsplit
+      vsplit
+      windo set signcolumn=yes foldcolumn=1 winminwidth=0 nowrap list listchars=extends:>,precedes:<
+  END
+  call writefile(lines, 'XTest_listchars')
+
+  let buf = RunVimInTerminal('-S XTest_listchars', {'rows': 10, 'cols': 60})
+
+  call term_sendkeys(buf, "13\<C-W>>")
+  call VerifyScreenDump(buf, 'Test_listchars_01', {})
+  call term_sendkeys(buf, "\<C-W>>")
+  call VerifyScreenDump(buf, 'Test_listchars_02', {})
+  call term_sendkeys(buf, "\<C-W>>")
+  call VerifyScreenDump(buf, 'Test_listchars_03', {})
+  call term_sendkeys(buf, "\<C-W>>")
+  call VerifyScreenDump(buf, 'Test_listchars_04', {})
+  call term_sendkeys(buf, "\<C-W>>")
+  call VerifyScreenDump(buf, 'Test_listchars_05', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+  call delete('XTest_listchars')
+endfunc
+
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_listlbr_utf8.vim b/src/nvim/testdir/test_listlbr_utf8.vim
index c38e0c5f3c..1f100d6244 100644
--- a/src/nvim/testdir/test_listlbr_utf8.vim
+++ b/src/nvim/testdir/test_listlbr_utf8.vim
@@ -69,6 +69,16 @@ func Test_nolinebreak_with_list()
   call s:close_windows()
 endfunc
 
+" this was causing a crash
+func Test_linebreak_with_list_and_tabs()
+  set linebreak list listchars=tab:⇤\ ⇥ tabstop=100
+  new
+  call setline(1, "\t\t\ttext")
+  redraw
+  bwipe!
+  set nolinebreak nolist listchars&vim tabstop=8
+endfunc
+
 func Test_linebreak_with_nolist()
   call s:test_windows('setl nolist')
   call setline(1, "\t*mask = nil;")
diff --git a/src/nvim/testdir/test_normal.vim b/src/nvim/testdir/test_normal.vim
index aff22f5d01..cb1d66cb98 100644
--- a/src/nvim/testdir/test_normal.vim
+++ b/src/nvim/testdir/test_normal.vim
@@ -2759,4 +2759,16 @@ func Test_normal_count_after_operator()
   bw!
 endfunc
 
+func Test_normal_gj_on_extra_wide_char()
+  new | 25vsp
+  let text='1 foooooooo ar e  ins‍zwe1 foooooooo ins‍zwei' .
+         \ ' i drei vier fünf sechs sieben acht un zehn elf zwöfl' .
+         \ ' dreizehn v ierzehn fünfzehn'
+  put =text
+  call cursor(2,1)
+  norm! gj
+  call assert_equal([0,2,25,0], getpos('.'))
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_options.vim b/src/nvim/testdir/test_options.vim
index 5946732937..2312df5450 100644
--- a/src/nvim/testdir/test_options.vim
+++ b/src/nvim/testdir/test_options.vim
@@ -51,7 +51,7 @@ func Test_wildoptions()
   call assert_equal('tagfile', &wildoptions)
 endfunc
 
-function! Test_options()
+func Test_options_command()
   let caught = 'ok'
   try
     options
@@ -88,7 +88,7 @@ function! Test_options()
 
   " close option-window
   close
-endfunction
+endfunc
 
 function! Test_path_keep_commas()
   " Test that changing 'path' keeps two commas.
@@ -368,6 +368,13 @@ func Test_set_all()
   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()
   " The file is only generated when running "make test" in the src directory.
   if filereadable('opt_test.vim')
diff --git a/src/nvim/testdir/test_scriptnames.vim b/src/nvim/testdir/test_scriptnames.vim
index fc6c910bfa..44ec146666 100644
--- a/src/nvim/testdir/test_scriptnames.vim
+++ b/src/nvim/testdir/test_scriptnames.vim
@@ -23,4 +23,10 @@ func Test_scriptnames()
 
   bwipe
   call delete('Xscripting')
+
+  let msgs = execute('messages')
+  scriptnames
+  call assert_equal(msgs, execute('messages'))
 endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_selectmode.vim b/src/nvim/testdir/test_selectmode.vim
new file mode 100644
index 0000000000..b483841060
--- /dev/null
+++ b/src/nvim/testdir/test_selectmode.vim
@@ -0,0 +1,57 @@
+" Test for Select-mode
+
+source shared.vim
+
+" Test for selecting a register with CTRL-R
+func Test_selectmode_register()
+  new
+
+  " Default behavior: use unnamed register
+  call setline(1, 'foo')
+  call setreg('"', 'bar')
+  call setreg('a', 'baz')
+  exe ":norm! v\<c-g>a"
+  call assert_equal(getline('.'), 'aoo')
+  call assert_equal('f', getreg('"'))
+  call assert_equal('baz', getreg('a'))
+
+  " Use the black hole register
+  call setline(1, 'foo')
+  call setreg('"', 'bar')
+  call setreg('a', 'baz')
+  exe ":norm! v\<c-g>\<c-r>_a"
+  call assert_equal(getline('.'), 'aoo')
+  call assert_equal('bar', getreg('"'))
+  call assert_equal('baz', getreg('a'))
+
+  " Invalid register: use unnamed register
+  call setline(1, 'foo')
+  call setreg('"', 'bar')
+  call setreg('a', 'baz')
+  exe ":norm! v\<c-g>\<c-r>?a"
+  call assert_equal(getline('.'), 'aoo')
+  call assert_equal('f', getreg('"'))
+  call assert_equal('baz', getreg('a'))
+
+  " Use unnamed register
+  call setline(1, 'foo')
+  call setreg('"', 'bar')
+  call setreg('a', 'baz')
+  exe ":norm! v\<c-g>\<c-r>\"a"
+  call assert_equal(getline('.'), 'aoo')
+  call assert_equal('f', getreg('"'))
+  call assert_equal('baz', getreg('a'))
+
+  " use specicifed register, unnamed register is also written
+  call setline(1, 'foo')
+  call setreg('"', 'bar')
+  call setreg('a', 'baz')
+  exe ":norm! v\<c-g>\<c-r>aa"
+  call assert_equal(getline('.'), 'aoo')
+  call assert_equal('f', getreg('"'))
+  call assert_equal('f', getreg('a'))
+
+  bw!
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_statusline.vim b/src/nvim/testdir/test_statusline.vim
index a3e4dcdd25..f40c9ae097 100644
--- a/src/nvim/testdir/test_statusline.vim
+++ b/src/nvim/testdir/test_statusline.vim
@@ -186,7 +186,16 @@ func Test_statusline()
   set virtualedit=all
   norm 10|
   call assert_match('^10,-10\s*$', s:get_statusline())
+  set list
+  call assert_match('^10,-10\s*$', s:get_statusline())
   set virtualedit&
+  exe "norm A\<Tab>\<Tab>a\<Esc>"
+  " In list mode a <Tab> is shown as "^I", which is 2-wide.
+  call assert_match('^9,-9\s*$', s:get_statusline())
+  set list&
+  " Now the second <Tab> ends at the 16th screen column.
+  call assert_match('^17,-17\s*$', s:get_statusline())
+  undo
 
   " %w: Preview window flag, text is "[Preview]".
   " %W: Preview window flag, text is ",PRV".
diff --git a/src/nvim/testdir/test_timers.vim b/src/nvim/testdir/test_timers.vim
index aae315b2c5..09eed4e10d 100644
--- a/src/nvim/testdir/test_timers.vim
+++ b/src/nvim/testdir/test_timers.vim
@@ -379,4 +379,27 @@ func Test_timer_invalid_callback()
   call assert_fails('call timer_start(0, "0")', 'E921')
 endfunc
 
+func Test_timer_using_win_execute_undo_sync()
+  let bufnr1 = bufnr()
+  new
+  let g:bufnr2 = bufnr()
+  let g:winid = win_getid()
+  exe "buffer " .. bufnr1
+  wincmd w
+  call setline(1, ['test'])
+  autocmd InsertEnter * call timer_start(100, { -> win_execute(g:winid, 'buffer ' .. g:bufnr2) })
+  call timer_start(200, { -> feedkeys("\<CR>bbbb\<Esc>") })
+  call feedkeys("Oaaaa", 'x!t')
+  " will hang here until the second timer fires
+  call assert_equal(['aaaa', 'bbbb', 'test'], getline(1, '$'))
+  undo
+  call assert_equal(['test'], getline(1, '$'))
+
+  bwipe!
+  bwipe!
+  unlet g:winid
+  unlet g:bufnr2
+  au! InsertEnter
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_virtualedit.vim b/src/nvim/testdir/test_virtualedit.vim
index 0a218898ed..d2a5258bd3 100644
--- a/src/nvim/testdir/test_virtualedit.vim
+++ b/src/nvim/testdir/test_virtualedit.vim
@@ -258,4 +258,139 @@ func Test_yank_paste_small_del_reg()
   set virtualedit=
 endfunc
 
+" After calling s:TryVirtualeditReplace(), line 1 will contain one of these
+" two strings, depending on whether virtual editing is on or off.
+let s:result_ve_on  = 'a      x'
+let s:result_ve_off = 'x'
+
+" Utility function for Test_global_local_virtualedit()
+func s:TryVirtualeditReplace()
+  call setline(1, 'a')
+  normal gg7l
+  normal rx
+endfunc
+
+" Test for :set and :setlocal
+func Test_global_local_virtualedit()
+  new
+
+  " Verify that 'virtualedit' is initialized to empty, can be set globally to
+  " all and to empty, and can be set locally to all and to empty.
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  set ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  set ve=
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+
+  " Verify that :set affects multiple windows.
+  split
+  set ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  wincmd p
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  set ve=
+  wincmd p
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  bwipe!
+
+  " Verify that :setlocal affects only the current window.
+  new
+  split
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  wincmd p
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  bwipe!
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+
+  " Verify that the buffer 'virtualedit' state follows the global value only
+  " when empty and that "none" works as expected.
+  "
+  "          'virtualedit' State
+  " +--------+--------------------------+
+  " | Local  |          Global          |
+  " |        |                          |
+  " +--------+--------+--------+--------+
+  " |        | ""     | "all"  | "none" |
+  " +--------+--------+--------+--------+
+  " | ""     |  off   |  on    |  off   |
+  " | "all"  |  on    |  on    |  on    |
+  " | "none" |  off   |  off   |  off   |
+  " +--------+--------+--------+--------+
+  new
+
+  setglobal ve=
+  setlocal ve=
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=none
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+
+  setglobal ve=all
+  setlocal ve=
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=none
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  setlocal ve=NONE
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+
+  setglobal ve=none
+  setlocal ve=
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=none
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+
+  bwipe!
+
+  " Verify that the 'virtualedit' state is copied to new windows.
+  new
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  split
+  setlocal ve=all
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  split
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_on, getline(1))
+  setlocal ve=
+  split
+  call s:TryVirtualeditReplace()
+  call assert_equal(s:result_ve_off, getline(1))
+  bwipe!
+
+  setlocal virtualedit&
+  set virtualedit&
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/nvim/testdir/test_visual.vim b/src/nvim/testdir/test_visual.vim
index d58ca92a2f..76274fb038 100644
--- a/src/nvim/testdir/test_visual.vim
+++ b/src/nvim/testdir/test_visual.vim
@@ -1103,6 +1103,13 @@ func Test_visual_put_blockedit_zy_and_zp()
   bw!
 endfunc
 
+func Test_visual_block_yank_zy()
+  new
+  " this was reading before the start of the line
+  exe "norm o\<C-T>\<Esc>\<C-V>zy"
+  bwipe!
+endfunc
+
 func Test_visual_block_with_virtualedit()
   CheckScreendump
 
@@ -1117,10 +1124,67 @@ func Test_visual_block_with_virtualedit()
   call term_sendkeys(buf, "\<C-V>gg$")
   call VerifyScreenDump(buf, 'Test_visual_block_with_virtualedit', {})
 
+  call term_sendkeys(buf, "\<Esc>gg\<C-V>G$")
+  call VerifyScreenDump(buf, 'Test_visual_block_with_virtualedit2', {})
+
   " clean up
   call term_sendkeys(buf, "\<Esc>")
   call StopVimInTerminal(buf)
-  call delete('XTest_beval')
+  call delete('XTest_block')
+endfunc
+
+func Test_visual_block_ctrl_w_f()
+  " Emtpy block selected in new buffer should not result in an error.
+  au! BufNew foo sil norm f
+  edit foo
+
+  au! BufNew
+endfunc
+
+func Test_visual_reselect_with_count()
+  " this was causing an illegal memory access
+  let lines =<< trim END
+
+
+
+      :
+      r<sfile>
+      exe "%norm e3\<c-v>kr\t"
+      :
+
+      :
+  END
+  call writefile(lines, 'XvisualReselect')
+  source XvisualReselect
+
+  bwipe!
+  call delete('XvisualReselect')
+endfunc
+
+" this was leaving the end of the Visual area beyond the end of a line
+func Test_visual_ex_copy_line()
+  new
+  call setline(1, ["aaa", "bbbbbbbbbxbb"])
+  /x
+  exe "normal ggvjfxO"
+  t0
+  normal gNU
+  bwipe!
+endfunc
+
+" This was leaving the end of the Visual area beyond the end of a line.
+" Set 'undolevels' to start a new undo block.
+func Test_visual_undo_deletes_last_line()
+  new
+  call setline(1, ["aaa", "ccc", "dyd"])
+  set undolevels=100
+  exe "normal obbbbbbbbbxbb\<Esc>"
+  set undolevels=100
+  /y
+  exe "normal ggvjfxO"
+  undo
+  normal gNU
+  bwipe!
 endfunc