diff --git a/src/testdir/test_blob.vim b/src/testdir/test_blob.vim
index 5eb3f3c..24ac7ea 100644
--- a/src/testdir/test_blob.vim
+++ b/src/testdir/test_blob.vim
@@ -425,24 +425,6 @@
 
   let lines =<< trim END
       VAR b = 0zDEADBEEF
-      call remove(1, 0)
-  END
-  call CheckLegacyAndVim9Failure(lines, 'E896:')
-
-  let lines =<< trim END
-      VAR b = 0zDEADBEEF
-      call remove(b, b)
-  END
-  call CheckLegacyAndVim9Failure(lines, 'E974:')
-
-  let lines =<< trim END
-      VAR b = 0zDEADBEEF
-      call remove(b, 1, [])
-  END
-  call CheckLegacyAndVim9Failure(lines, 'E745:')
-
-  let lines =<< trim END
-      VAR b = 0zDEADBEEF
       call remove(test_null_blob(), 1, 2)
   END
   call CheckLegacyAndVim9Failure(lines, 'E979:')
@@ -504,16 +486,6 @@
       call assert_equal(-1, index(test_null_blob(), 1))
   END
   call CheckLegacyAndVim9Success(lines)
-
-  let lines =<< trim END
-      echo index(0z11110111, 0x11, [])
-  END
-  call CheckLegacyAndVim9Failure(lines, 'E745:')
-
-  let lines =<< trim END
-      call index("asdf", 0)
-  END
-  call CheckLegacyAndVim9Failure(lines, 'E897:')
 endfunc
 
 func Test_blob_insert()
diff --git a/src/testdir/test_gui.vim b/src/testdir/test_gui.vim
index b727372..237bfb4 100644
--- a/src/testdir/test_gui.vim
+++ b/src/testdir/test_gui.vim
@@ -1093,11 +1093,11 @@
   let &guioptions = save_guioptions
 
   " Test invalid parameters for test_gui_mouse_event()
-  call assert_fails('call test_gui_mouse_event("", 1, 2, 3, 4)', 'E474:')
-  call assert_fails('call test_gui_mouse_event(0, "", 2, 3, 4)', 'E474:')
-  call assert_fails('call test_gui_mouse_event(0, 1, "", 3, 4)', 'E474:')
-  call assert_fails('call test_gui_mouse_event(0, 1, 2, "", 4)', 'E474:')
-  call assert_fails('call test_gui_mouse_event(0, 1, 2, 3, "")', 'E474:')
+  call assert_fails('call test_gui_mouse_event("", 1, 2, 3, 4)', 'E1210:')
+  call assert_fails('call test_gui_mouse_event(0, "", 2, 3, 4)', 'E1210:')
+  call assert_fails('call test_gui_mouse_event(0, 1, "", 3, 4)', 'E1210:')
+  call assert_fails('call test_gui_mouse_event(0, 1, 2, "", 4)', 'E1210:')
+  call assert_fails('call test_gui_mouse_event(0, 1, 2, 3, "")', 'E1210:')
 
   bw!
   call test_override('no_query_mouse', 0)
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index e717163..8699150 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -270,18 +270,10 @@
 def Test_browse()
   CheckFeature browse
 
-  var lines =<< trim END
-      browse(1, 2, 3, 4)
-  END
-  CheckDefExecAndScriptFailure(lines, 'E1174: String required for argument 2')
-  lines =<< trim END
-      browse(1, 'title', 3, 4)
-  END
-  CheckDefExecAndScriptFailure(lines, 'E1174: String required for argument 3')
-  lines =<< trim END
-      browse(1, 'title', 'dir', 4)
-  END
-  CheckDefExecAndScriptFailure(lines, 'E1174: String required for argument 4')
+  CheckDefAndScriptFailure2(['browse(2, "title", "dir", "file")'], 'E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1')
+  CheckDefAndScriptFailure2(['browse(true, 2, "dir", "file")'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['browse(true, "title", 3, "file")'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+  CheckDefAndScriptFailure2(['browse(true, "title", "dir", 4)'], 'E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4')
 enddef
 
 def Test_browsedir()
@@ -330,6 +322,8 @@
   buf = bufnr('Xdummy', true)
   buf->assert_notequal(-1)
   exe 'bwipe! ' .. buf
+  CheckDefAndScriptFailure2(['bufnr([1])'], 'E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['bufnr(1, 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
 enddef
 
 def Test_bufwinid()
@@ -379,22 +373,53 @@
 def Test_ch_canread()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefFailure(['ch_canread(10)'], 'E1013: Argument 1: type mismatch, expected channel but got number')
   endif
-  CheckDefFailure(['ch_canread(10)'], 'E1013: Argument 1: type mismatch, expected channel but got number')
 enddef
 
 def Test_ch_close()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefFailure(['ch_close("c")'], 'E1013: Argument 1: type mismatch, expected channel but got string')
   endif
-  CheckDefFailure(['ch_close("c")'], 'E1013: Argument 1: type mismatch, expected channel but got string')
 enddef
 
 def Test_ch_close_in()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefFailure(['ch_close_in(true)'], 'E1013: Argument 1: type mismatch, expected channel but got bool')
   endif
-  CheckDefFailure(['ch_close_in(true)'], 'E1013: Argument 1: type mismatch, expected channel but got bool')
+enddef
+
+def Test_ch_evalexpr()
+  if !has('channel')
+    CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_evalexpr(1, "a")'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E1218: Channel or Job required for argument 1')
+    CheckDefAndScriptFailure2(['ch_evalexpr(test_null_channel(), 1, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+  endif
+enddef
+
+def Test_ch_evalraw()
+  if !has('channel')
+    CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_evalraw(1, "")'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E1218: Channel or Job required for argument 1')
+    CheckDefAndScriptFailure2(['ch_evalraw(test_null_channel(), 1)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+    CheckDefAndScriptFailure2(['ch_evalraw(test_null_channel(), "", [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+  endif
+enddef
+
+def Test_ch_getbufnr()
+  if !has('channel')
+    CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_getbufnr(1, "a")'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E1218: Channel or Job required for argument 1')
+    CheckDefAndScriptFailure2(['ch_getbufnr(test_null_channel(), 1)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  endif
 enddef
 
 def Test_ch_getjob()
@@ -410,67 +435,94 @@
 def Test_ch_info()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefFailure(['ch_info([1])'], 'E1013: Argument 1: type mismatch, expected channel but got list<number>')
   endif
-  CheckDefFailure(['ch_info([1])'], 'E1013: Argument 1: type mismatch, expected channel but got list<number>')
 enddef
 
 def Test_ch_logfile()
   if !has('channel')
     CheckFeature channel
-  endif
-  assert_fails('ch_logfile(true)', 'E1174:')
-  assert_fails('ch_logfile("foo", true)', 'E1174:')
+  else
+    assert_fails('ch_logfile(true)', 'E1174:')
+    assert_fails('ch_logfile("foo", true)', 'E1174:')
 
-  CheckDefAndScriptFailure2(['ch_logfile(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
-  CheckDefAndScriptFailure2(['ch_logfile("a", true)'], 'E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2')
+    CheckDefAndScriptFailure2(['ch_logfile(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+    CheckDefAndScriptFailure2(['ch_logfile("a", true)'], 'E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2')
+  endif
 enddef
 
 def Test_ch_open()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_open({"a": 10}, "a")'], 'E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1')
+    CheckDefAndScriptFailure2(['ch_open("a", [1])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2')
   endif
-  CheckDefAndScriptFailure2(['ch_open({"a": 10}, "a")'], 'E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1')
-  CheckDefAndScriptFailure2(['ch_open("a", [1])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2')
 enddef
 
 def Test_ch_read()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_read(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
+    CheckDefAndScriptFailure2(['ch_read(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
   endif
-  CheckDefAndScriptFailure2(['ch_read(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
-  CheckDefAndScriptFailure2(['ch_read(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
 enddef
 
 def Test_ch_readblob()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_readblob(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
+    CheckDefAndScriptFailure2(['ch_readblob(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
   endif
-  CheckDefAndScriptFailure2(['ch_readblob(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
-  CheckDefAndScriptFailure2(['ch_readblob(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
 enddef
 
 def Test_ch_readraw()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_readraw(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
+    CheckDefAndScriptFailure2(['ch_readraw(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
   endif
-  CheckDefAndScriptFailure2(['ch_readraw(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
-  CheckDefAndScriptFailure2(['ch_readraw(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
+enddef
+
+def Test_ch_sendexpr()
+  if !has('channel')
+    CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_sendexpr(1, "a")'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E1218: Channel or Job required for argument 1')
+    CheckDefAndScriptFailure2(['ch_sendexpr(test_null_channel(), 1, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+  endif
+enddef
+
+def Test_ch_sendraw()
+  if !has('channel')
+    CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_sendraw(1, "")'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E1218: Channel or Job required for argument 1')
+    CheckDefAndScriptFailure2(['ch_sendraw(test_null_channel(), 1)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+    CheckDefAndScriptFailure2(['ch_sendraw(test_null_channel(), "", [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+  endif
 enddef
 
 def Test_ch_setoptions()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_setoptions(1, {})'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
+    CheckDefFailure(['ch_setoptions(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>')
   endif
-  CheckDefAndScriptFailure2(['ch_setoptions(1, {})'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
-  CheckDefFailure(['ch_setoptions(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>')
 enddef
 
 def Test_ch_status()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['ch_status(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
+    CheckDefAndScriptFailure2(['ch_status(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
   endif
-  CheckDefAndScriptFailure2(['ch_status(1)'], 'E1013: Argument 1: type mismatch, expected channel but got number', 'E475: Invalid argument')
-  CheckDefAndScriptFailure2(['ch_status(test_null_channel(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E715: Dictionary required')
 enddef
 
 def Test_char2nr()
@@ -538,6 +590,15 @@
   bw!
 enddef
 
+def Test_complete()
+  CheckDefAndScriptFailure2(['complete("1", [])'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['complete(1, {})'], 'E1013: Argument 2: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 2')
+enddef
+
+def Test_complete_add()
+  CheckDefAndScriptFailure2(['complete_add([])'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
+enddef
+
 def Test_complete_info()
   CheckDefFailure(['complete_info("")'], 'E1013: Argument 1: type mismatch, expected list<string> but got string')
   CheckDefFailure(['complete_info({})'], 'E1013: Argument 1: type mismatch, expected list<string> but got dict<unknown>')
@@ -576,6 +637,12 @@
 def Test_count()
   count('ABC ABC ABC', 'b', true)->assert_equal(3)
   count('ABC ABC ABC', 'b', false)->assert_equal(0)
+  CheckDefAndScriptFailure2(['count(10, 1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['count("a", [1], 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
+  CheckDefAndScriptFailure2(['count("a", [1], 0, "b")'], 'E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4')
+  count([1, 2, 2, 3], 2)->assert_equal(2)
+  count([1, 2, 2, 3], 2, false, 2)->assert_equal(1)
+  count({a: 1.1, b: 2.2, c: 1.1}, 1.1)->assert_equal(2)
 enddef
 
 def Test_cursor()
@@ -590,6 +657,9 @@
     cursor('2', 1)
   END
   CheckDefExecAndScriptFailure(lines, 'E1209:')
+  CheckDefAndScriptFailure2(['cursor(0z10, 1)'], 'E1013: Argument 1: type mismatch, expected number but got blob', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['cursor(1, "2")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['cursor(1, 2, "3")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
 enddef
 
 def Test_debugbreak()
@@ -597,6 +667,10 @@
   CheckDefFailure(['debugbreak("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
 enddef
 
+def Test_deepcopy()
+  CheckDefAndScriptFailure2(['deepcopy({}, 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+enddef
+
 def Test_delete()
   var res: bool = delete('doesnotexist')
   assert_equal(true, res)
@@ -605,6 +679,12 @@
   CheckDefFailure(['delete("a", 10)'], 'E1013: Argument 2: type mismatch, expected string but got number')
 enddef
 
+def Test_deletebufline()
+  CheckDefAndScriptFailure2(['deletebufline([], 2)'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['deletebufline("a", [])'], 'E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['deletebufline("a", 2, 0z10)'], 'E1013: Argument 3: type mismatch, expected string but got blob', 'E1174: String required for argument 3')
+enddef
+
 def Test_diff_filler()
   CheckDefFailure(['diff_filler([])'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>')
   CheckDefFailure(['diff_filler(true)'], 'E1013: Argument 1: type mismatch, expected string but got bool')
@@ -670,6 +750,9 @@
   split SomeFile
   expand('%', true, true)->assert_equal(['SomeFile'])
   close
+  CheckDefAndScriptFailure2(['expand(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['expand("a", 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+  CheckDefAndScriptFailure2(['expand("a", true, 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_expandcmd()
@@ -858,6 +941,8 @@
       echo flatten([1, 2, 3])
   END
   CheckDefAndScriptFailure(lines, 'E1158:')
+  CheckDefAndScriptFailure2(['flattennew({})'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['flattennew([], "1")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
 enddef
 
 " Test for float functions argument type
@@ -1033,6 +1118,9 @@
   getbufline(-1, 1, '$')->assert_equal([])
 
   bwipe!
+  CheckDefAndScriptFailure2(['getbufline([], 2)'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['getbufline("a", [])'], 'E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['getbufline("a", 2, 0z10)'], 'E1013: Argument 3: type mismatch, expected string but got blob', 'E1174: String required for argument 3')
 enddef
 
 def Test_getchangelist()
@@ -1062,24 +1150,14 @@
   CheckDefAndScriptFailure2(['getcharstr("1")'], 'E1013: Argument 1: type mismatch, expected bool but got string', 'E1135: Using a String as a Bool')
 enddef
 
-def Test_getenv()
-  if getenv('does-not_exist') == ''
-    assert_report('getenv() should return null')
-  endif
-  if getenv('does-not_exist') == null
-  else
-    assert_report('getenv() should return null')
-  endif
-  $SOMEENVVAR = 'some'
-  assert_equal('some', getenv('SOMEENVVAR'))
-  unlet $SOMEENVVAR
-enddef
-
 def Test_getcompletion()
   set wildignore=*.vim,*~
   var l = getcompletion('run', 'file', true)
   l->assert_equal([])
   set wildignore&
+  CheckDefAndScriptFailure2(['getcompletion(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['getcompletion("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['getcompletion("a", "b", 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_getcurpos()
@@ -1096,6 +1174,19 @@
   CheckDefFailure(['getcwd(1, "x")'], 'E1013: Argument 2: type mismatch, expected number but got string')
 enddef
 
+def Test_getenv()
+  if getenv('does-not_exist') == ''
+    assert_report('getenv() should return null')
+  endif
+  if getenv('does-not_exist') == null
+  else
+    assert_report('getenv() should return null')
+  endif
+  $SOMEENVVAR = 'some'
+  assert_equal('some', getenv('SOMEENVVAR'))
+  unlet $SOMEENVVAR
+enddef
+
 def Test_getfontname()
   CheckDefFailure(['getfontname(10)'], 'E1013: Argument 1: type mismatch, expected string but got number')
 enddef
@@ -1204,6 +1295,9 @@
   setreg('a', lines)
   getreg('a', true, true)->assert_equal(lines)
   assert_fails('getreg("ab")', 'E1162:')
+  CheckDefAndScriptFailure2(['getreg(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['getreg(".", 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+  CheckDefAndScriptFailure2(['getreg(".", 1, "b")'], 'E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_getreg_return_type()
@@ -1230,6 +1324,17 @@
   CheckDefFailure(['gettabinfo("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
 enddef
 
+def Test_gettabvar()
+  CheckDefAndScriptFailure2(['gettabvar("a", "b")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['gettabvar(1, 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+enddef
+
+def Test_gettabwinvar()
+  CheckDefAndScriptFailure2(['gettabwinvar("a", 2, "c")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['gettabwinvar(1, "b", "c", [])'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['gettabwinvar(1, 1, 3, {})'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+enddef
+
 def Test_gettagstack()
   CheckDefFailure(['gettagstack("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
 enddef
@@ -1247,8 +1352,17 @@
   CheckDefFailure(['getwinpos("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
 enddef
 
+def Test_getwinvar()
+  CheckDefAndScriptFailure2(['getwinvar("a", "b")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['getwinvar(1, 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+enddef
+
 def Test_glob()
   glob('runtest.vim', true, true, true)->assert_equal(['runtest.vim'])
+  CheckDefAndScriptFailure2(['glob(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['glob("a", 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+  CheckDefAndScriptFailure2(['glob("a", 1, "b")'], 'E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3')
+  CheckDefAndScriptFailure2(['glob("a", 1, true, 2)'], 'E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4')
 enddef
 
 def Test_glob2regpat()
@@ -1258,10 +1372,17 @@
 
 def Test_globpath()
   globpath('.', 'runtest.vim', true, true, true)->assert_equal(['./runtest.vim'])
+  CheckDefAndScriptFailure2(['globpath(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['globpath("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['globpath("a", "b", "c")'], 'E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3')
+  CheckDefAndScriptFailure2(['globpath("a", "b", true, "d")'], 'E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4')
+  CheckDefAndScriptFailure2(['globpath("a", "b", true, false, "e")'], 'E1013: Argument 5: type mismatch, expected bool but got string', 'E1212: Bool required for argument 5')
 enddef
 
 def Test_has()
   has('eval', true)->assert_equal(1)
+  CheckDefAndScriptFailure2(['has(["a"])'], 'E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['has("a", "b")'], 'E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2')
 enddef
 
 def Test_has_key()
@@ -1286,6 +1407,9 @@
   iabbrev foo foobar
   hasmapto('foobar', 'i', true)->assert_equal(1)
   iunabbrev foo
+  CheckDefAndScriptFailure2(['hasmapto(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['hasmapto("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['hasmapto("a", "b", 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_histadd()
@@ -1330,6 +1454,9 @@
 
 def Test_index()
   index(['a', 'b', 'a', 'B'], 'b', 2, true)->assert_equal(3)
+  CheckDefAndScriptFailure2(['index("a", "a")'], 'E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['index([1], 1.1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  CheckDefAndScriptFailure2(['index(0z1020, [1], 1, 2)'], 'E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4')
 enddef
 
 def Test_input()
@@ -1458,6 +1585,16 @@
   endif
 enddef
 
+def Test_job_setoptions()
+  if !has('job')
+    CheckFeature job
+  else
+    CheckDefAndScriptFailure2(['job_setoptions(test_null_channel(), {})'], 'E1013: Argument 1: type mismatch, expected job but got channel', 'E1219: Job required for argument 1')
+    CheckDefAndScriptFailure2(['job_setoptions(test_null_job(), [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 2')
+    assert_equal('fail', job_status(test_null_job()))
+  endif
+enddef
+
 def Test_job_status()
   if !has('job')
     CheckFeature job
@@ -1467,6 +1604,20 @@
   endif
 enddef
 
+def Test_job_stop()
+  if !has('job')
+    CheckFeature job
+  else
+    CheckDefAndScriptFailure2(['job_stop("a")'], 'E1013: Argument 1: type mismatch, expected job but got string', 'E1219: Job required for argument 1')
+    CheckDefAndScriptFailure2(['job_stop(test_null_job(), true)'], 'E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2')
+  endif
+enddef
+
+def Test_join()
+  CheckDefAndScriptFailure2(['join("abc")'], 'E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['join([], 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+enddef
+
 def Test_js_decode()
   CheckDefFailure(['js_decode(10)'], 'E1013: Argument 1: type mismatch, expected string but got number')
   assert_equal([1, 2], js_decode('[1,2]'))
@@ -1512,6 +1663,11 @@
   list2str(l, true)->assert_equal(s)
 enddef
 
+def Test_list2str()
+  CheckDefAndScriptFailure2(['list2str(".", true)'], 'E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['list2str([1], 0z10)'], 'E1013: Argument 2: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 2')
+enddef
+
 def SID(): number
   return expand('<SID>')
           ->matchstr('<SNR>\zs\d\+\ze_$')
@@ -1526,6 +1682,27 @@
   CheckDefAndScriptFailure2(['listener_remove("x")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1030: Using a String as a Number')
 enddef
 
+def Test_map_failure()
+  CheckFeature job
+
+  var lines =<< trim END
+      vim9script
+      writefile([], 'Xtmpfile')
+      silent e Xtmpfile
+      var d = {[bufnr('%')]: {a: 0}}
+      au BufReadPost * Func()
+      def Func()
+          if d->has_key('')
+          endif
+          eval d[expand('<abuf>')]->mapnew((_, v: dict<job>) => 0)
+      enddef
+      e
+  END
+  CheckScriptFailure(lines, 'E1013:')
+  au! BufReadPost
+  delete('Xtmpfile')
+enddef
+
 def Test_map_function_arg()
   var lines =<< trim END
       def MapOne(i: number, v: string): string
@@ -1591,12 +1768,10 @@
         rhs: 'bar',
         buffer: 0})
   unmap foo
-enddef
-
-def Test_mapcheck()
-  iabbrev foo foobar
-  mapcheck('foo', 'i', true)->assert_equal('foobar')
-  iunabbrev foo
+  CheckDefAndScriptFailure2(['maparg(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['maparg("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['maparg("a", "b", 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
+  CheckDefAndScriptFailure2(['maparg("a", "b", true, 2)'], 'E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4')
 enddef
 
 def Test_maparg_mapset()
@@ -1607,25 +1782,19 @@
   nunmap <F3>
 enddef
 
-def Test_map_failure()
-  CheckFeature job
+def Test_mapcheck()
+  iabbrev foo foobar
+  mapcheck('foo', 'i', true)->assert_equal('foobar')
+  iunabbrev foo
+  CheckDefAndScriptFailure2(['mapcheck(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['mapcheck("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['mapcheck("a", "b", 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
+enddef
 
-  var lines =<< trim END
-      vim9script
-      writefile([], 'Xtmpfile')
-      silent e Xtmpfile
-      var d = {[bufnr('%')]: {a: 0}}
-      au BufReadPost * Func()
-      def Func()
-          if d->has_key('')
-          endif
-          eval d[expand('<abuf>')]->mapnew((_, v: dict<job>) => 0)
-      enddef
-      e
-  END
-  CheckScriptFailure(lines, 'E1013:')
-  au! BufReadPost
-  delete('Xtmpfile')
+def Test_mapset()
+  CheckDefAndScriptFailure2(['mapset(1, true, {})'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['mapset("a", 2, {})'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+  CheckDefAndScriptFailure2(['mapset("a", false, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
 enddef
 
 def Test_match()
@@ -1668,6 +1837,18 @@
   assert_equal(5, matchend(['a', 'b', 'c', 'b', 'd', 'b'], 'b', 2, 2))
 enddef
 
+def Test_matchfuzzy()
+  CheckDefAndScriptFailure2(['matchfuzzy({}, "p")'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['matchfuzzy([], 1)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['matchfuzzy([], "a", [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+enddef
+
+def Test_matchfuzzypos()
+  CheckDefAndScriptFailure2(['matchfuzzypos({}, "p")'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['matchfuzzypos([], 1)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['matchfuzzypos([], "a", [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+enddef
+
 def Test_matchlist()
   CheckDefAndScriptFailure2(['matchlist(0z12, "p")'], 'E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1')
   CheckDefAndScriptFailure2(['matchlist(["s"], [2])'], 'E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2')
@@ -1781,6 +1962,8 @@
 
 def Test_nr2char()
   nr2char(97, true)->assert_equal('a')
+  CheckDefAndScriptFailure2(['nr2char("x")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['nr2char(1, "a")'], 'E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2')
 enddef
 
 def Test_or()
@@ -1906,9 +2089,22 @@
 def Test_prompt_setprompt()
   if !has('channel')
     CheckFeature channel
+  else
+    CheckDefAndScriptFailure2(['prompt_setprompt([], "p")'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
+    CheckDefAndScriptFailure2(['prompt_setprompt(1, [])'], 'E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 2')
   endif
-  CheckDefAndScriptFailure2(['prompt_setprompt([], "p")'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
-  CheckDefAndScriptFailure2(['prompt_setprompt(1, [])'], 'E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 2')
+enddef
+
+def Test_prop_add()
+  CheckDefAndScriptFailure2(['prop_add("a", 2, {})'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['prop_add(1, "b", {})'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['prop_add(1, 2, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
+enddef
+
+def Test_prop_clear()
+  CheckDefAndScriptFailure2(['prop_clear("a")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['prop_clear(1, "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['prop_clear(1, 2, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
 enddef
 
 def Test_prop_find()
@@ -1922,6 +2118,12 @@
   CheckDefAndScriptFailure2(['prop_list(1, [])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 2')
 enddef
 
+def Test_prop_remove()
+  CheckDefAndScriptFailure2(['prop_remove([])'], 'E1013: Argument 1: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 1')
+  CheckDefAndScriptFailure2(['prop_remove({}, "a")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['prop_remove({}, 1, "b")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+enddef
+
 def Test_prop_type_add()
   CheckDefAndScriptFailure2(['prop_type_add({"a": 10}, "b")'], 'E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E731: Using a Dictionary as a String')
   CheckDefAndScriptFailure2(['prop_type_add("a", "b")'], 'E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E715: Dictionary required')
@@ -2053,6 +2255,15 @@
   assert_true(type(reltimestr(reltime())) == v:t_string)
 enddef
 
+def Test_remote_expr()
+  CheckFeature clientserver
+  CheckEnv DISPLAY
+  CheckDefAndScriptFailure2(['remote_expr(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['remote_expr("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['remote_expr("a", "b", 3)'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+  CheckDefAndScriptFailure2(['remote_expr("a", "b", "c", "d")'], 'E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4')
+enddef
+
 def Test_remote_foreground()
   CheckFeature clientserver
   # remote_foreground() doesn't fail on MS-Windows
@@ -2077,6 +2288,14 @@
   CheckDefAndScriptFailure2(['remote_read("a", "x")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
 enddef
 
+def Test_remote_send()
+  CheckFeature clientserver
+  CheckEnv DISPLAY
+  CheckDefAndScriptFailure2(['remote_send(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['remote_send("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['remote_send("a", "b", 3)'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+enddef
+
 def Test_remote_startserver()
   CheckFeature clientserver
   CheckEnv DISPLAY
@@ -2089,6 +2308,31 @@
   assert_equal([3, 4], l)
 enddef
 
+def Test_remove()
+  CheckDefAndScriptFailure2(['remove("a", 1)'], 'E1013: Argument 1: type mismatch, expected list<any> but got string', 'E896: Argument of remove() must be a List, Dictionary or Blob')
+  CheckDefAndScriptFailure2(['remove([], "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['remove([], 1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  CheckDefAndScriptFailure2(['remove({}, 1.1)'], 'E1013: Argument 2: type mismatch, expected string but got float', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['remove(0z10, "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['remove(0z20, 1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  var l: any = [1, 2, 3, 4]
+  remove(l, 1)
+  assert_equal([1, 3, 4], l)
+  remove(l, 0, 1)
+  assert_equal([4], l)
+  var b: any = 0z1234.5678.90
+  remove(b, 1)
+  assert_equal(0z1256.7890, b)
+  remove(b, 1, 2)
+  assert_equal(0z1290, b)
+  var d: any = {a: 10, b: 20, c: 30}
+  remove(d, 'b')
+  assert_equal({a: 10, c: 30}, d)
+  var d2: any = {1: 'a', 2: 'b', 3: 'c'}
+  remove(d2, 2)
+  assert_equal({1: 'a', 3: 'c'}, d2)
+enddef
+
 def Test_remove_return_type()
   var l = remove({one: [1, 2], two: [3, 4]}, 'one')
   var res = 0
@@ -2202,6 +2446,13 @@
   CheckDefAndScriptFailure2(['searchcount([1])'], 'E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E715: Dictionary required')
 enddef
 
+def Test_searchdecl()
+  searchdecl('blah', true, true)->assert_equal(1)
+  CheckDefAndScriptFailure2(['searchdecl(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['searchdecl("a", 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+  CheckDefAndScriptFailure2(['searchdecl("a", true, 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
+enddef
+
 def Test_searchpair()
   new
   setline(1, "here { and } there")
@@ -2247,6 +2498,11 @@
   CheckDefAndScriptFailure2(['server2client("a", 10)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E573: Invalid server id used:')
 enddef
 
+def Test_shellescape()
+  CheckDefAndScriptFailure2(['shellescape(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['shellescape("a", 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
+enddef
+
 def Test_set_get_bufline()
   # similar to Test_setbufline_getbufline()
   var lines =<< trim END
@@ -2297,10 +2553,6 @@
   CheckDefAndScriptSuccess(lines)
 enddef
 
-def Test_searchdecl()
-  searchdecl('blah', true, true)->assert_equal(1)
-enddef
-
 def Test_setbufvar()
   setbufvar(bufnr('%'), '&syntax', 'vim')
   &syntax->assert_equal('vim')
@@ -2326,23 +2578,6 @@
   getbufvar('%', 'myvar')->assert_equal(123)
 enddef
 
-def Test_setcharsearch()
-  CheckDefFailure(['setcharsearch("x")'], 'E1013: Argument 1: type mismatch, expected dict<any> but got string')
-  CheckDefFailure(['setcharsearch([])'], 'E1013: Argument 1: type mismatch, expected dict<any> but got list<unknown>')
-  var d: dict<any> = {char: 'x', forward: 1, until: 1}
-  setcharsearch(d)
-  assert_equal(d, getcharsearch())
-enddef
-
-def Test_setcmdpos()
-  CheckDefFailure(['setcmdpos("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
-enddef
-
-def Test_setfperm()
-  CheckDefFailure(['setfperm(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number')
-  CheckDefFailure(['setfperm("a", 0z10)'], 'E1013: Argument 2: type mismatch, expected string but got blob')
-enddef
-
 def Test_setbufline()
   new
   var bnum = bufnr('%')
@@ -2364,6 +2599,35 @@
   CheckDefAndScriptFailure2(['setcellwidths({"a": 10})'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E714: List required')
 enddef
 
+def Test_setcharpos()
+  CheckDefAndScriptFailure2(['setcharpos(1, [])'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefFailure(['setcharpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
+  CheckDefAndScriptFailure2(['setcharpos(".", 1)'], 'E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2')
+enddef
+
+def Test_setcharsearch()
+  CheckDefFailure(['setcharsearch("x")'], 'E1013: Argument 1: type mismatch, expected dict<any> but got string')
+  CheckDefFailure(['setcharsearch([])'], 'E1013: Argument 1: type mismatch, expected dict<any> but got list<unknown>')
+  var d: dict<any> = {char: 'x', forward: 1, until: 1}
+  setcharsearch(d)
+  assert_equal(d, getcharsearch())
+enddef
+
+def Test_setcmdpos()
+  CheckDefFailure(['setcmdpos("x")'], 'E1013: Argument 1: type mismatch, expected number but got string')
+enddef
+
+def Test_setcursorcharpos()
+  CheckDefAndScriptFailure2(['setcursorcharpos(0z10, 1)'], 'E1013: Argument 1: type mismatch, expected number but got blob', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['setcursorcharpos(1, "2")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['setcursorcharpos(1, 2, "3")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+enddef
+
+def Test_setfperm()
+  CheckDefFailure(['setfperm(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number')
+  CheckDefFailure(['setfperm("a", 0z10)'], 'E1013: Argument 2: type mismatch, expected string but got blob')
+enddef
+
 def Test_setline()
   new
   setline(1, range(1, 4))
@@ -2383,6 +2647,27 @@
   var what = {items: items}
   setqflist([], ' ', what)
   setloclist(0, [], ' ', what)
+  CheckDefAndScriptFailure2(['setloclist("1", [])'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['setloclist(1, 2)'], 'E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2')
+  CheckDefAndScriptFailure2(['setloclist(1, [], 3)'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+  CheckDefAndScriptFailure2(['setloclist(1, [], "a", [])'], 'E1013: Argument 4: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 4')
+enddef
+
+def Test_setmatches()
+  CheckDefAndScriptFailure2(['setmatches({})'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['setmatches([], "1")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+enddef
+
+def Test_setpos()
+  CheckDefAndScriptFailure2(['setpos(1, [])'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefFailure(['setpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
+  CheckDefAndScriptFailure2(['setpos(".", 1)'], 'E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2')
+enddef
+
+def Test_setqflist()
+  CheckDefAndScriptFailure2(['setqflist(1, "")'], 'E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['setqflist([], 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['setqflist([], "", [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
 enddef
 
 def Test_setreg()
@@ -2393,6 +2678,28 @@
   assert_fails('setreg("ab", 0)', 'E1162:')
 enddef 
 
+def Test_settabvar()
+  CheckDefAndScriptFailure2(['settabvar("a", "b", 1)'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['settabvar(1, 2, "c")'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+enddef
+
+def Test_settabwinvar()
+  CheckDefAndScriptFailure2(['settabwinvar("a", 2, "c", true)'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['settabwinvar(1, "b", "c", [])'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['settabwinvar(1, 1, 3, {})'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+enddef
+
+def Test_settagstack()
+  CheckDefAndScriptFailure2(['settagstack(true, {})'], 'E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['settagstack(1, [1])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2')
+  CheckDefAndScriptFailure2(['settagstack(1, {}, 2)'], 'E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3')
+enddef
+
+def Test_setwinvar()
+  CheckDefAndScriptFailure2(['setwinvar("a", "b", 1)'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['setwinvar(1, 2, "c")'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+enddef
+
 def Test_sha256()
   CheckDefFailure(['sha256(100)'], 'E1013: Argument 1: type mismatch, expected string but got number')
   CheckDefFailure(['sha256(0zABCD)'], 'E1013: Argument 1: type mismatch, expected string but got blob')
@@ -2414,6 +2721,12 @@
   CheckDefAndScriptFailure2(['sign_getdefined(2)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
 enddef
 
+def Test_sign_getplaced()
+  CheckDefAndScriptFailure2(['sign_getplaced(["x"])'], 'E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['sign_getplaced(1, ["a"])'], 'E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2')
+  CheckDefAndScriptFailure2(['sign_getplaced("a", 1.1)'], 'E1013: Argument 2: type mismatch, expected dict<any> but got float', 'E1206: Dictionary required for argument 2')
+enddef
+
 def Test_sign_placelist()
   CheckDefAndScriptFailure2(['sign_placelist("x")'], 'E1013: Argument 1: type mismatch, expected list<any> but got string', 'E714: List required')
   CheckDefAndScriptFailure2(['sign_placelist({"a": 10})'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E714: List required')
@@ -2461,6 +2774,9 @@
   assert_equal(0z11, slice(0z001122334455, 1, -4))
   assert_equal(0z, slice(0z001122334455, 1, -5))
   assert_equal(0z, slice(0z001122334455, 1, -6))
+  CheckDefAndScriptFailure2(['slice({"a": 10}, 1)'], 'E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1')
+  CheckDefAndScriptFailure2(['slice([1, 2, 3], "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['slice("abc", 1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
 enddef
 
 def Test_spellsuggest()
@@ -2469,6 +2785,9 @@
   else
     spellsuggest('marrch', 1, true)->assert_equal(['March'])
   endif
+  CheckDefAndScriptFailure2(['spellsuggest(1)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['spellsuggest("a", "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['spellsuggest("a", 1, 0z01)'], 'E1013: Argument 3: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_sound_stop()
@@ -2508,6 +2827,9 @@
 
 def Test_split()
   split('  aa  bb  ', '\W\+', true)->assert_equal(['', 'aa', 'bb', ''])
+  CheckDefAndScriptFailure2(['split(1, "b")'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['split("a", 2)'], 'E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2')
+  CheckDefAndScriptFailure2(['split("a", "b", 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_srand()
@@ -2557,6 +2879,13 @@
   strcharlen(99)->assert_equal(2)
 enddef
 
+def Test_strcharpart()
+  CheckDefAndScriptFailure2(['strcharpart(1, 2)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['strcharpart("a", "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['strcharpart("a", 1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  CheckDefAndScriptFailure2(['strcharpart("a", 1, 1, 2)'], 'E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4')
+enddef
+
 def Test_strchars()
   strchars("A\u20dd", true)->assert_equal(1)
   CheckDefAndScriptFailure2(['strchars(10)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
@@ -2593,6 +2922,13 @@
   strlen(99)->assert_equal(2)
 enddef
 
+def Test_strpart()
+  CheckDefAndScriptFailure2(['strpart(1, 2)'], 'E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['strpart("a", "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['strpart("a", 1, "c")'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  CheckDefAndScriptFailure2(['strpart("a", 1, 1, 2)'], 'E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4')
+enddef
+
 def Test_strptime()
   CheckFunction strptime
   CheckDefFailure(['strptime(10, "2021")'], 'E1013: Argument 1: type mismatch, expected string but got number')
@@ -2626,6 +2962,8 @@
   var actual = substitute('A123456789', pat, Rep, '')
   var expected = "[['A123456789'], ['1'], ['2'], ['3'], ['4'], ['5'], ['6'], ['7'], ['8'], ['9']]"
   actual->assert_equal(expected)
+  CheckDefAndScriptFailure2(['submatch("x")'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['submatch(1, "a")'], 'E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2')
 enddef
 
 def Test_substitute()
@@ -2653,6 +2991,9 @@
   setline(1, "text")
   synID(1, 1, true)->assert_equal(0)
   bwipe!
+  CheckDefAndScriptFailure2(['synID(0z10, 1, true)'], 'E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['synID("a", true, false)'], 'E1013: Argument 2: type mismatch, expected number but got bool', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['synID(1, 1, 2)'], 'E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3')
 enddef
 
 def Test_synIDtrans()
@@ -2753,6 +3094,8 @@
     term_gettty(buf, true)->assert_notequal('')
     StopShellInTerminal(buf)
   endif
+  CheckDefAndScriptFailure2(['term_gettty([1])'], 'E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['term_gettty(1, 2)'], 'E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2')
 enddef
 
 def Test_term_sendkeys()
@@ -2761,6 +3104,12 @@
   CheckDefAndScriptFailure2(['term_sendkeys(1, [])'], 'E1013: Argument 2: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 2')
 enddef
 
+def Test_term_setansicolors()
+  CheckRunVimInTerminal
+  CheckDefAndScriptFailure2(['term_setansicolors([], "p")'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
+  CheckDefAndScriptFailure2(['term_setansicolors(10, {})'], 'E1013: Argument 2: type mismatch, expected list<any> but got dict<unknown>', 'E1211: List required for argument 2')
+enddef
+
 def Test_term_setapi()
   CheckRunVimInTerminal
   CheckDefAndScriptFailure2(['term_setapi([], "p")'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E1174: String required for argument 1')
@@ -2811,6 +3160,15 @@
   CheckDefAndScriptFailure2(['test_getvalue(1.1)'], 'E1013: Argument 1: type mismatch, expected string but got float', 'E474: Invalid argument')
 enddef
 
+def Test_test_gui_mouse_event()
+  CheckGui
+  CheckDefAndScriptFailure2(['test_gui_mouse_event(1.1, 1, 1, 1, 1)'], 'E1013: Argument 1: type mismatch, expected number but got float', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['test_gui_mouse_event(1, "1", 1, 1, 1)'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['test_gui_mouse_event(1, 1, "1", 1, 1)'], 'E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3')
+  CheckDefAndScriptFailure2(['test_gui_mouse_event(1, 1, 1, "1", 1)'], 'E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4')
+  CheckDefAndScriptFailure2(['test_gui_mouse_event(1, 1, 1, 1, "1")'], 'E1013: Argument 5: type mismatch, expected number but got string', 'E1210: Number required for argument 5')
+enddef
+
 def Test_test_ignore_error()
   CheckDefAndScriptFailure2(['test_ignore_error([])'], 'E1013: Argument 1: type mismatch, expected string but got list<unknown>', 'E474: Invalid argument')
   test_ignore_error('RESET')
@@ -2845,6 +3203,11 @@
   assert_equal([], timer_info())
 enddef
 
+def Test_timer_pause()
+  CheckDefAndScriptFailure2(['timer_pause("x", 1)'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['timer_pause(1, "a")'], 'E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2')
+enddef
+
 def Test_timer_paused()
   var id = timer_start(50, () => 0)
   timer_pause(id, true)
@@ -2955,6 +3318,9 @@
   split
   win_splitmove(1, 2, {vertical: true, rightbelow: true})
   close
+  CheckDefAndScriptFailure2(['win_splitmove("a", 2)'], 'E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1')
+  CheckDefAndScriptFailure2(['win_splitmove(1, "b")'], 'E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2')
+  CheckDefAndScriptFailure2(['win_splitmove(1, 2, [])'], 'E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3')
 enddef
 
 def Test_winbufnr()