Merging upstream version 2:9.1.0374.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

64 files changed, 5683 insertions, 1586 deletions

diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index c4403e6..b41f5f4 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -40,6 +40,7 @@ TEST_VIM9 = \
 	test_vim9_class \
 	test_vim9_cmd \
 	test_vim9_disassemble \
+	test_vim9_enum \
 	test_vim9_expr \
 	test_vim9_fails \
 	test_vim9_func \
@@ -53,6 +54,7 @@ TEST_VIM9_RES = \
 	test_vim9_class.res \
 	test_vim9_cmd.res \
 	test_vim9_disassemble.res \
+	test_vim9_enum.res \
 	test_vim9_expr.res \
 	test_vim9_fails.res \
 	test_vim9_func.res \
@@ -329,6 +331,7 @@ NEW_TESTS = \
 	test_wnext \
 	test_wordcount \
 	test_writefile \
+	test_xdg \
 	test_xxd \
 	test_alot_latin \
 	test_alot_utf8 \
@@ -459,6 +462,7 @@ NEW_TESTS_RES = \
 	test_matchadd_conceal.res \
 	test_matchadd_conceal_utf8.res \
 	test_matchfuzzy.res \
+	test_matchparen.res \
 	test_memory_usage.res \
 	test_menu.res \
 	test_messages.res \
@@ -561,6 +565,7 @@ NEW_TESTS_RES = \
 	test_winfixbuf.res \
 	test_wordcount.res \
 	test_writefile.res \
+	test_xdg.res \
 	test_xxd.res \
 	test_alot_latin.res \
 	test_alot_utf8.res \
diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index fd2e56c..4e476f9 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -89,7 +89,7 @@ RUN_VIM = VIMRUNTIME=$(SCRIPTSOURCE) $(VALGRIND) $(VIMPROG) -f $(GUI_FLAG) -u un
 # Delete files that may interfere with running tests.  This includes some files
 # that may result from working on the tests, not only from running them.
 clean:
-	-rm -rf *.out *.failed *.res *.rej *.orig XfakeHOME Xdir1 Xfind
+	-rm -rf *.out *.failed *.res *.rej *.orig XfakeHOME Xdir1 Xfind failed
 	-rm -f opt_test.vim test_result.log $(CLEANUP_FILES)
 	-rm -rf $(RM_ON_RUN) $(RM_ON_START)
 	-rm -f valgrind.*
diff --git a/src/testdir/dumps/Test_ambiwidth_hl_dump_1.dump b/src/testdir/dumps/Test_ambiwidth_hl_dump_1.dump
new file mode 100644
index 0000000..383a6f4
--- /dev/null
+++ b/src/testdir/dumps/Test_ambiwidth_hl_dump_1.dump
@@ -0,0 +1,6 @@
+>℃+8&#ffffff0@49
+@10|$+8#4040ff13&| +8#0000000&@38
+|℃+0&&@49
+@10|$+0#4040ff13&| +0#0000000&@38
+|~+0#4040ff13&| @48
+| +0#0000000&@31|1|,|1| @10|A|l@1| 
diff --git a/src/testdir/dumps/Test_ambiwidth_hl_dump_2.dump b/src/testdir/dumps/Test_ambiwidth_hl_dump_2.dump
new file mode 100644
index 0000000..81aeb7b
--- /dev/null
+++ b/src/testdir/dumps/Test_ambiwidth_hl_dump_2.dump
@@ -0,0 +1,6 @@
+>℃+8&#ffffff0| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| 
+|℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| 
+|℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |$+8#4040ff13&| +8#0000000&@28
+|℃+0&&| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| 
+|℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| |℃| @1|@+0#4040ff13&@2
+| +0#0000000&@31|1|,|1| @10|T|o|p| 
diff --git a/src/testdir/dumps/Test_display_visual_block_scroll.dump b/src/testdir/dumps/Test_display_visual_block_scroll.dump
index afb52fb..36eae0c 100644
--- a/src/testdir/dumps/Test_display_visual_block_scroll.dump
+++ b/src/testdir/dumps/Test_display_visual_block_scroll.dump
@@ -1,7 +1,7 @@
-|{+0&#e0e0e08| | +0&#ffffff0@72
-|}+0&#e0e0e08| | +0&#ffffff0@72
-|{+0&#e0e0e08| | +0&#ffffff0@72
-|f+0&#e0e0e08| | +0&#ffffff0@72
->g| +0&#e0e0e08| +0&#ffffff0@72
+|{+0#0000001#a8a8a8255| | +0#0000000#ffffff0@72
+|}+0#0000001#a8a8a8255| | +0#0000000#ffffff0@72
+|{+0#0000001#a8a8a8255| | +0#0000000#ffffff0@72
+|f+0#0000001#a8a8a8255| | +0#0000000#ffffff0@72
+>g| +0#0000001#a8a8a8255| +0#0000000#ffffff0@72
 |}| @73
 |-+2&&@1| |V|I|S|U|A|L| |L|I|N|E| |-@1| +0&&@29|7| @8|1@1|,|1| @9|B|o|t| 
diff --git a/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1.dump b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1.dump
new file mode 100644
index 0000000..7a0b848
--- /dev/null
+++ b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1.dump
@@ -0,0 +1,16 @@
+| +0#af5f00255#ffffff0@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
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+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
+| +0#af5f00255&@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
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+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3| +0#0000000&@35
+| +0#af5f00255&@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
+| +0#af5f00255&@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
+| +0#af5f00255&@1|3| |T+0#0000000&|h|i|r|d| |l|i|n|e| |f|i|t|s| |o|n| |s|c|r|e@1|n| |l|i|n|e|.|A+0#0000001#ffff4012|f|t|e|r
+| +0#af5f00255#ffffff0@3| +0#0000001#ffff4012|t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.| +0#0000000#ffffff0@10
+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
+@22|1|,|4|-|4|0| @7|A|l@1| 
diff --git a/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_2.dump b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_2.dump
new file mode 100644
index 0000000..d463990
--- /dev/null
+++ b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_2.dump
@@ -0,0 +1,16 @@
+| +0#af5f00255#ffffff0@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
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+| +0#af5f00255#ffffff0@3| +0#0000001#ffff4012|t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.| +0#0000000#ffffff0@10
+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
+| +0#af5f00255&@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
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+| +0#af5f00255&@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
+| +0#af5f00255&@1|3| |T+0#0000000&|h|i|r|d| |l|i|n|e| |f|i|t|s| |o|n| |s|c|r|e@1|n| |l|i|n|e|.|A+0#0000001#ffff4012|f|t|e|r
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+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
+@22|2|,|0|-|3|7| @7|A|l@1| 
diff --git a/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_3.dump b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_3.dump
new file mode 100644
index 0000000..85a469d
--- /dev/null
+++ b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_3.dump
@@ -0,0 +1,16 @@
+| +0#af5f00255#ffffff0@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
+| +0#af5f00255&@1|1| |F+0#0000000&|i|r|s|t| |l|i|n|e| |f|i|t|s| |o|n| |s|c|r|e@1|n| |l|i|n|e|.|A+0#0000001#ffff4012|f|t|e|r
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+| +0#af5f00255&@3| +0#0000000&@5|R+0#0000001#ffff4012|i|g|h|t| |t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.
+| +0#af5f00255#ffffff0@3|B+0#0000001#ffff4012|e|l|o|w| +0#0000000#ffffff0@30
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diff --git a/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_4.dump b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_4.dump
new file mode 100644
index 0000000..2c03fdf
--- /dev/null
+++ b/src/testdir/dumps/Test_prop_normal_gj_gk_gM_with_outer_virtual_text_4.dump
@@ -0,0 +1,16 @@
+| +0#af5f00255#ffffff0@3|A+0#0000001#ffff4012|b|o|v|e| +0#0000000#ffffff0@30
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+| +0#af5f00255#ffffff0@3| +0#0000001#ffff4012|t|e|x|t| |w|r|a|p|s| |t|o| |n|e|x|t| |l|i|n|e|.| +0#0000000#ffffff0@10
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diff --git a/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_1.dump b/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_1.dump
new file mode 100644
index 0000000..f46f47e
--- /dev/null
+++ b/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_1.dump
@@ -0,0 +1,8 @@
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+|s+0#0000000&|e|c|o|n|d| |l|i|n>e| @28
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+|~| @38
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diff --git a/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_2.dump b/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_2.dump
new file mode 100644
index 0000000..3434669
--- /dev/null
+++ b/src/testdir/dumps/Test_props_with_text_truncated_just_before_after_2.dump
@@ -0,0 +1,8 @@
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diff --git a/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_1.dump b/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_1.dump
new file mode 100644
index 0000000..73f4418
--- /dev/null
+++ b/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_1.dump
@@ -0,0 +1,6 @@
+>➜+0&#ffffff0@49
+@10| @39
+|➜@49
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+|~+0#4040ff13&| @48
+| +0#0000000&@31|1|,|1| @10|A|l@1| 
diff --git a/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_2.dump b/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_2.dump
new file mode 100644
index 0000000..2b575f6
--- /dev/null
+++ b/src/testdir/dumps/Test_setcellwidths_with_non_ambiwidth_character_dump_2.dump
@@ -0,0 +1,6 @@
+>➜+0&#ffffff0| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| 
+|➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| 
+|➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| @30
+|➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| |➜| 
+|@+0#4040ff13&@2| @46
+| +0#0000000&@31|1|,|1| @10|T|o|p| 
diff --git a/src/testdir/dumps/Test_smooth_long_6.dump b/src/testdir/dumps/Test_smooth_long_6.dump
index ba48c28..507aa46 100644
--- a/src/testdir/dumps/Test_smooth_long_6.dump
+++ b/src/testdir/dumps/Test_smooth_long_6.dump
@@ -3,4 +3,4 @@
 |t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o
 |f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e
 |x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w
-| @21|3|,|9|0| @9|6@1|%| 
+|:|s|e|t| |s|c|r|o|l@1|o| @9|3|,|9|0| @9|6@1|%| 
diff --git a/src/testdir/dumps/Test_smooth_long_7.dump b/src/testdir/dumps/Test_smooth_long_7.dump
index 222e001..225207f 100644
--- a/src/testdir/dumps/Test_smooth_long_7.dump
+++ b/src/testdir/dumps/Test_smooth_long_7.dump
@@ -3,4 +3,4 @@
 |t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o
 |f| |t|e|x|t| |w|i>t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e
 |x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w
-| @21|3|,|1|7|0| @8|6@1|%| 
+|:|s|e|t| |s|c|r|o|l@1|o| @9|3|,|1|7|0| @8|6@1|%| 
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 564d568..6745ecb 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -3702,73 +3702,6 @@ func Test_autocmd_with_block()
   augroup END
 endfunc
 
-" Test TextChangedI and TextChanged
-func Test_Changed_ChangedI()
-  new
-  call test_override("char_avail", 1)
-  let [g:autocmd_i, g:autocmd_n] = ['','']
-
-  func! TextChangedAutocmdI(char)
-    let g:autocmd_{tolower(a:char)} = a:char .. b:changedtick
-  endfunc
-
-  augroup Test_TextChanged
-    au!
-    au TextChanged  <buffer> :call TextChangedAutocmdI('N')
-    au TextChangedI <buffer> :call TextChangedAutocmdI('I')
-  augroup END
-
-  call feedkeys("ifoo\<esc>", 'tnix')
-  " TODO: Test test does not seem to trigger TextChanged autocommand, this
-  " requires running Vim in a terminal window.
-  " call assert_equal('N3', g:autocmd_n)
-  call assert_equal('I3', g:autocmd_i)
-
-  call feedkeys("yyp", 'tnix')
-  " TODO: Test test does not seem to trigger TextChanged autocommand.
-  " call assert_equal('N4', g:autocmd_n)
-  call assert_equal('I3', g:autocmd_i)
-
-  " TextChangedI should only trigger if change was done in Insert mode
-  let g:autocmd_i = ''
-  call feedkeys("yypi\<esc>", 'tnix')
-  call assert_equal('', g:autocmd_i)
-
-  " TextChanged should only trigger if change was done in Normal mode
-  let g:autocmd_n = ''
-  call feedkeys("ibar\<esc>", 'tnix')
-  call assert_equal('', g:autocmd_n)
-
-  " If change is a mix of Normal and Insert modes, TextChangedI should trigger
-  func s:validate_mixed_textchangedi(keys)
-    call feedkeys("ifoo\<esc>", 'tnix')
-    let g:autocmd_i = ''
-    let g:autocmd_n = ''
-    call feedkeys(a:keys, 'tnix')
-    call assert_notequal('', g:autocmd_i)
-    call assert_equal('', g:autocmd_n)
-  endfunc
-
-  call s:validate_mixed_textchangedi("o\<esc>")
-  call s:validate_mixed_textchangedi("O\<esc>")
-  call s:validate_mixed_textchangedi("ciw\<esc>")
-  call s:validate_mixed_textchangedi("cc\<esc>")
-  call s:validate_mixed_textchangedi("C\<esc>")
-  call s:validate_mixed_textchangedi("s\<esc>")
-  call s:validate_mixed_textchangedi("S\<esc>")
-
-
-  " CleanUp
-  call test_override("char_avail", 0)
-  au! TextChanged  <buffer>
-  au! TextChangedI <buffer>
-  augroup! Test_TextChanged
-  delfu TextChangedAutocmdI
-  unlet! g:autocmd_i g:autocmd_n
-
-  bw!
-endfunc
-
 func Test_closing_autocmd_window()
   let lines =<< trim END
       edit Xa.txt
@@ -3794,6 +3727,49 @@ func Test_switch_window_in_autocmd_window()
   call assert_false(bufexists('Xb.txt'))
 endfunc
 
+" Test that using the autocommand window doesn't change current directory.
+func Test_autocmd_window_cwd()
+  let saveddir = getcwd()
+  call mkdir('Xcwd/a/b/c/d', 'pR')
+
+  new Xa.txt
+  tabnew
+  new Xb.txt
+
+  tabprev
+  cd Xcwd
+  call assert_match('/Xcwd$', getcwd())
+  call assert_match('\[global\] .*/Xcwd$', trim(execute('verbose pwd')))
+
+  autocmd BufEnter Xb.txt lcd ./a/b/c/d
+  doautoall BufEnter
+  au! BufEnter
+  call assert_match('/Xcwd$', getcwd())
+  call assert_match('\[global\] .*/Xcwd$', trim(execute('verbose pwd')))
+
+  tabnext
+  cd ./a
+  tcd ./b
+  lcd ./c
+  call assert_match('/Xcwd/a/b/c$', getcwd())
+  call assert_match('\[window\] .*/Xcwd/a/b/c$', trim(execute('verbose pwd')))
+
+  autocmd BufEnter Xa.txt call assert_match('Xcwd/a/b/c$', getcwd())
+  doautoall BufEnter
+  au! BufEnter
+  call assert_match('/Xcwd/a/b/c$', getcwd())
+  call assert_match('\[window\] .*/Xcwd/a/b/c$', trim(execute('verbose pwd')))
+  bwipe!
+  call assert_match('/Xcwd/a/b$', getcwd())
+  call assert_match('\[tabpage\] .*/Xcwd/a/b$', trim(execute('verbose pwd')))
+  bwipe!
+  call assert_match('/Xcwd/a$', getcwd())
+  call assert_match('\[global\] .*/Xcwd/a$', trim(execute('verbose pwd')))
+  bwipe!
+
+  call chdir(saveddir)
+endfunc
+
 func Test_bufwipeout_changes_window()
   " This should not crash, but we don't have any expectations about what
   " happens, changing window in BufWipeout has unpredictable results.
@@ -4474,4 +4450,245 @@ func Test_autocmd_creates_new_buffer_on_bufleave()
   bw c.txt
 endfunc
 
+" Ensure `expected` was just recently written as a Vim session
+func s:assert_session_path(expected)
+  call assert_equal(a:expected, v:this_session)
+endfunc
+
+" Check for `expected` after a session is written to-disk.
+func s:watch_for_session_path(expected)
+  execute 'autocmd SessionWritePost * ++once execute "call s:assert_session_path(\"'
+        \ . a:expected
+        \ . '\")"'
+endfunc
+
+" Ensure v:this_session gets the full session path, if explicitly stated
+func Test_explicit_session_absolute_path()
+  %bwipeout!
+
+  let directory = getcwd()
+
+  let v:this_session = ""
+  let name = "some_file.vim"
+  let expected = fnamemodify(name, ":p")
+  call s:watch_for_session_path(expected)
+  execute "mksession! " .. expected
+
+  call delete(expected)
+endfunc
+
+" Ensure v:this_session gets the full session path, if explicitly stated
+func Test_explicit_session_relative_path()
+  %bwipeout!
+
+  let directory = getcwd()
+
+  let v:this_session = ""
+  let name = "some_file.vim"
+  let expected = fnamemodify(name, ":p")
+  call s:watch_for_session_path(expected)
+  execute "mksession! " .. name
+
+  call delete(expected)
+endfunc
+
+" Ensure v:this_session gets the full session path, if not specified
+func Test_implicit_session()
+  %bwipeout!
+
+  let directory = getcwd()
+
+  let v:this_session = ""
+  let expected = fnamemodify("Session.vim", ":p")
+  call s:watch_for_session_path(expected)
+  mksession!
+
+  call delete(expected)
+endfunc
+
+" Test TextChangedI and TextChanged
+func Test_Changed_ChangedI()
+  " Run this test in a terminal because it requires running the main loop.
+  " Don't use CheckRunVimInTerminal as that will skip the test on Windows.
+  CheckFeature terminal
+  CheckNotGui
+  " Starting a terminal to run Vim is always considered flaky.
+  let g:test_is_flaky = 1
+
+  call writefile(['one', 'two', 'three'], 'XTextChangedI2', 'D')
+  let before =<< trim END
+      set ttimeout ttimeoutlen=10
+      let [g:autocmd_n, g:autocmd_i] = ['','']
+
+      func TextChangedAutocmd(char)
+        let g:autocmd_{tolower(a:char)} = a:char .. b:changedtick
+        call writefile([$'{g:autocmd_n},{g:autocmd_i}'], 'XTextChangedI3')
+      endfunc
+
+      au TextChanged  <buffer> :call TextChangedAutocmd('N')
+      au TextChangedI <buffer> :call TextChangedAutocmd('I')
+
+      nnoremap <CR> o<Esc>
+      autocmd SafeState * ++once call writefile([''], 'XTextChangedI3')
+  END
+
+  call writefile(before, 'Xinit', 'D')
+  let buf = term_start(
+        \ GetVimCommandCleanTerm() .. '-n -S Xinit XTextChangedI2',
+        \ {'term_rows': 10})
+  call assert_equal('running', term_getstatus(buf))
+  call WaitForAssert({-> assert_true(filereadable('XTextChangedI3'))})
+  defer delete('XTextChangedI3')
+  call WaitForAssert({-> assert_equal([''], readfile('XTextChangedI3'))})
+
+  " TextChanged should trigger if a mapping enters and leaves Insert mode.
+  call term_sendkeys(buf, "\<CR>")
+  call WaitForAssert({-> assert_equal('N4,', readfile('XTextChangedI3')->join("\n"))})
+
+  call term_sendkeys(buf, "i")
+  call WaitForAssert({-> assert_match('^-- INSERT --', term_getline(buf, 10))})
+  call WaitForAssert({-> assert_equal('N4,', readfile('XTextChangedI3')->join("\n"))})
+  " TextChangedI should trigger if change is done in Insert mode.
+  call term_sendkeys(buf, "f")
+  call WaitForAssert({-> assert_equal('N4,I5', readfile('XTextChangedI3')->join("\n"))})
+  call term_sendkeys(buf, "o")
+  call WaitForAssert({-> assert_equal('N4,I6', readfile('XTextChangedI3')->join("\n"))})
+  call term_sendkeys(buf, "o")
+  call WaitForAssert({-> assert_equal('N4,I7', readfile('XTextChangedI3')->join("\n"))})
+  " TextChanged shouldn't trigger when leaving Insert mode and TextChangedI
+  " has been triggered.
+  call term_sendkeys(buf, "\<Esc>")
+  call WaitForAssert({-> assert_notmatch('^-- INSERT --', term_getline(buf, 10))})
+  call WaitForAssert({-> assert_equal('N4,I7', readfile('XTextChangedI3')->join("\n"))})
+
+  " TextChanged should trigger if change is done in Normal mode.
+  call term_sendkeys(buf, "yyp")
+  call WaitForAssert({-> assert_equal('N8,I7', readfile('XTextChangedI3')->join("\n"))})
+
+  " TextChangedI shouldn't trigger if change isn't done in Insert mode.
+  call term_sendkeys(buf, "i")
+  call WaitForAssert({-> assert_match('^-- INSERT --', term_getline(buf, 10))})
+  call WaitForAssert({-> assert_equal('N8,I7', readfile('XTextChangedI3')->join("\n"))})
+  call term_sendkeys(buf, "\<Esc>")
+  call WaitForAssert({-> assert_notmatch('^-- INSERT --', term_getline(buf, 10))})
+  call WaitForAssert({-> assert_equal('N8,I7', readfile('XTextChangedI3')->join("\n"))})
+
+  " TextChangedI should trigger if change is a mix of Normal and Insert modes.
+  func! s:validate_mixed_textchangedi(buf, keys)
+    let buf = a:buf
+    call term_sendkeys(buf, "ifoo")
+    call WaitForAssert({-> assert_match('^-- INSERT --', term_getline(buf, 10))})
+    call term_sendkeys(buf, "\<Esc>")
+    call WaitForAssert({-> assert_notmatch('^-- INSERT --', term_getline(buf, 10))})
+    call term_sendkeys(buf, ":let [g:autocmd_n, g:autocmd_i] = ['', '']\<CR>")
+    call writefile([], 'XTextChangedI3')
+    call term_sendkeys(buf, a:keys)
+    call WaitForAssert({-> assert_match('^-- INSERT --', term_getline(buf, 10))})
+    call WaitForAssert({-> assert_match('^,I\d\+', readfile('XTextChangedI3')->join("\n"))})
+    call term_sendkeys(buf, "\<Esc>")
+    call WaitForAssert({-> assert_notmatch('^-- INSERT --', term_getline(buf, 10))})
+    call WaitForAssert({-> assert_match('^,I\d\+', readfile('XTextChangedI3')->join("\n"))})
+  endfunc
+
+  call s:validate_mixed_textchangedi(buf, "o")
+  call s:validate_mixed_textchangedi(buf, "O")
+  call s:validate_mixed_textchangedi(buf, "ciw")
+  call s:validate_mixed_textchangedi(buf, "cc")
+  call s:validate_mixed_textchangedi(buf, "C")
+  call s:validate_mixed_textchangedi(buf, "s")
+  call s:validate_mixed_textchangedi(buf, "S")
+
+  " clean up
+  bwipe!
+endfunc
+
+" Test that filetype detection still works when SwapExists autocommand sets
+" filetype in another buffer.
+func Test_SwapExists_set_other_buf_filetype()
+  let lines =<< trim END
+    set nocompatible directory=.
+    filetype on
+
+    let g:buf = bufnr()
+    new
+
+    func SwapExists()
+      let v:swapchoice = 'o'
+      call setbufvar(g:buf, '&filetype', 'text')
+    endfunc
+
+    func SafeState()
+      edit <script>
+      redir! > XftSwapExists.out
+        set readonly? filetype?
+      redir END
+      qall!
+    endfunc
+
+    autocmd SwapExists * ++nested call SwapExists()
+    autocmd SafeState * ++nested ++once call SafeState()
+  END
+  call writefile(lines, 'XftSwapExists.vim', 'D')
+
+  new XftSwapExists.vim
+  if RunVim('', '', ' -S XftSwapExists.vim')
+    call assert_equal(
+          \ ['', '  readonly', '  filetype=vim'],
+          \ readfile('XftSwapExists.out'))
+    call delete('XftSwapExists.out')
+  endif
+
+  bwipe!
+endfunc
+
+" Test that file is not marked as modified when SwapExists autocommand sets
+" 'modified' in another buffer.
+func Test_SwapExists_set_other_buf_modified()
+  let lines =<< trim END
+    set nocompatible directory=.
+
+    let g:buf = bufnr()
+    new
+
+    func SwapExists()
+      let v:swapchoice = 'o'
+      call setbufvar(g:buf, '&modified', 1)
+    endfunc
+
+    func SafeState()
+      edit <script>
+      redir! > XmodSwapExists.out
+        set readonly? modified?
+      redir END
+      qall!
+    endfunc
+
+    autocmd SwapExists * ++nested call SwapExists()
+    autocmd SafeState * ++nested ++once call SafeState()
+  END
+  call writefile(lines, 'XmodSwapExists.vim', 'D')
+
+  new XmodSwapExists.vim
+  if RunVim('', '', ' -S XmodSwapExists.vim')
+    call assert_equal(
+          \ ['', '  readonly', 'nomodified'],
+          \ readfile('XmodSwapExists.out'))
+    call delete('XmodSwapExists.out')
+  endif
+
+  bwipe!
+endfunc
+
+func Test_BufEnter_botline()
+  set hidden
+  call writefile(range(10), 'Xxx1', 'D')
+  call writefile(range(20), 'Xxx2', 'D')
+  edit Xxx1
+  edit Xxx2
+  au BufEnter Xxx1 call assert_true(line('w$') > 1)
+  edit Xxx1
+  au! BufEnter Xxx1
+  set hidden&vim
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_buffer.vim b/src/testdir/test_buffer.vim
index bc29c21..de088bd 100644
--- a/src/testdir/test_buffer.vim
+++ b/src/testdir/test_buffer.vim
@@ -133,7 +133,7 @@ func Test_bdelete_cmd()
   call assert_fails('1,1bdelete 1 2', 'E488:')
   call assert_fails('bdelete \)', 'E55:')
 
-  " Deleting a unlisted and unloaded buffer
+  " Deleting an unlisted and unloaded buffer
   edit Xbdelfile1
   let bnr = bufnr()
   set nobuflisted
@@ -252,21 +252,30 @@ func Test_goto_buf_with_confirm()
   CheckUnix
   CheckNotGui
   CheckFeature dialog_con
+  " When dialog_con_gui is defined, Vim is compiled with GUI support
+  " and FEAT_BROWSE will be defined, which causes :confirm :b to
+  " call do_browse(), which will try to use a GUI file browser,
+  " which aborts if a GUI is not available.
+  CheckNotFeature dialog_con_gui
   new XgotoConf
   enew
   call setline(1, 'test')
   call assert_fails('b XgotoConf', 'E37:')
   call feedkeys('c', 'L')
   call assert_fails('confirm b XgotoConf', 'E37:')
-  call assert_equal(1, &modified)
-  call assert_equal('', @%)
+  call assert_true(&modified)
+  call assert_true(empty(bufname('%')))
   call feedkeys('y', 'L')
-  call assert_fails('confirm b XgotoConf', ['', 'E37:'])
-  call assert_equal(1, &modified)
-  call assert_equal('', @%)
+  confirm b XgotoConf
+  call assert_equal('XgotoConf', bufname('%'))
+  call assert_equal(['test'], readfile('Untitled'))
+  e Untitled
+  call setline(2, 'test2')
   call feedkeys('n', 'L')
   confirm b XgotoConf
-  call assert_equal('XgotoConf', @%)
+  call assert_equal('XgotoConf', bufname('%'))
+  call assert_equal(['test'], readfile('Untitled'))
+  call delete('Untitled')
   close!
 endfunc
 
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 7c86bcd..ed8f89d 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3733,9 +3733,9 @@ func Test_custom_completion()
   call assert_fails("call getcompletion('', 'custom')", 'E475:')
   call assert_fails("call getcompletion('', 'customlist')", 'E475:')
 
-  call assert_equal(getcompletion('', 'custom,CustomComplete1'), ['a', 'b', 'c'])
-  call assert_equal(getcompletion('', 'customlist,CustomComplete2'), ['a', 'b'])
-  call assert_equal(getcompletion('b', 'customlist,CustomComplete2'), ['b'])
+  call assert_equal(['a', 'b', 'c'], getcompletion('', 'custom,CustomComplete1'))
+  call assert_equal(['a', 'b'], getcompletion('', 'customlist,CustomComplete2'))
+  call assert_equal(['b'], getcompletion('b', 'customlist,CustomComplete2'))
 
   delcom Test1
   delcom Test2
@@ -3792,4 +3792,21 @@ func Test_buffer_completion()
   call assert_equal("\"b Xbuf_complete/Foobar.c Xbuf_complete/MyFoobar.c AFoobar.h", @:)
 endfunc
 
+" :set t_??
+func Test_term_option()
+  set wildoptions&
+  let _cpo = &cpo
+  set cpo-=C
+  " There may be more, test only until t_xo
+  let expected='"set t_AB t_AF t_AU t_AL t_al t_bc t_BE t_BD t_cd t_ce t_Ce t_CF t_cl t_cm'
+        \ .. ' t_Co t_CS t_Cs t_cs t_CV t_da t_db t_DL t_dl t_ds t_Ds t_EC t_EI t_fs t_fd t_fe'
+        \ .. ' t_GP t_IE t_IS t_ke t_ks t_le t_mb t_md t_me t_mr t_ms t_nd t_op t_RF t_RB t_RC'
+        \ .. ' t_RI t_Ri t_RK t_RS t_RT t_RV t_Sb t_SC t_se t_Sf t_SH t_SI t_Si t_so t_SR t_sr'
+        \ .. ' t_ST t_Te t_te t_TE t_ti t_TI t_Ts t_ts t_u7 t_ue t_us t_Us t_ut t_vb t_ve t_vi'
+        \ .. ' t_VS t_vs t_WP t_WS t_XM t_xn t_xs t_ZH t_ZR t_8f t_8b t_8u t_xo .*'
+  call feedkeys(":set t_\<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_match(expected, @:)
+  let &cpo = _cpo
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_cmdmods.vim b/src/testdir/test_cmdmods.vim
index 323a78e..66ff6a1 100644
--- a/src/testdir/test_cmdmods.vim
+++ b/src/testdir/test_cmdmods.vim
@@ -8,10 +8,10 @@ def Test_cmdmods_array()
   # :hide is both a command and a modifier
   cmds->extend(['hide'])
 
-  # Get the entries of cmdmods[] in ex_docmd.c
+  # Get the entries of cmdmod_info_tab[] in ex_docmd.c
   edit ../ex_docmd.c
-  var top = search('^} cmdmods[') + 1
-  var bot = search('^};') - 1
+  var top = search('^static cmdmod_info_T cmdmod_info_tab[') + 1
+  var bot = search('^};.*\/\/ cmdmod_info_tab') - 1
   lines = getline(top, bot)
   var mods = lines->map((_, v) => substitute(v, '.*"\(\k*\)".*', '\1', ''))
 
diff --git a/src/testdir/test_codestyle.vim b/src/testdir/test_codestyle.vim
index 359410d..a455264 100644
--- a/src/testdir/test_codestyle.vim
+++ b/src/testdir/test_codestyle.vim
@@ -7,13 +7,17 @@ def s:ReportError(fname: string, lnum: number, msg: string)
 enddef
 
 def s:PerformCheck(fname: string, pattern: string, msg: string, skip: string)
+  var prev_lnum = 1
   var lnum = 1
   while (lnum > 0)
     cursor(lnum, 1)
     lnum = search(pattern, 'W', 0, 0, skip)
-    ReportError(fname, lnum, msg)
+    if (prev_lnum == lnum)
+      break
+    endif
+    prev_lnum = lnum
     if (lnum > 0)
-      lnum += 1
+      ReportError(fname, lnum, msg)
     endif
   endwhile
 enddef
diff --git a/src/testdir/test_compiler.vim b/src/testdir/test_compiler.vim
index 4b710df..b7315e1 100644
--- a/src/testdir/test_compiler.vim
+++ b/src/testdir/test_compiler.vim
@@ -71,10 +71,10 @@ func Test_compiler_completion()
   call assert_match('^"compiler ' .. clist .. '$', @:)
 
   call feedkeys(":compiler p\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_match('"compiler pbx perl\( p[a-z]\+\)\+ pylint pyunit', @:)
+  call assert_match('"compiler pandoc pbx perl\( p[a-z_]\+\)\+ pylint pyunit', @:)
 
   call feedkeys(":compiler! p\<C-A>\<C-B>\"\<CR>", 'tx')
-  call assert_match('"compiler! pbx perl\( p[a-z]\+\)\+ pylint pyunit', @:)
+  call assert_match('"compiler! pandoc pbx perl\( p[a-z_]\+\)\+ pylint pyunit', @:)
 endfunc
 
 func Test_compiler_error()
diff --git a/src/testdir/test_conceal.vim b/src/testdir/test_conceal.vim
index 355817d..2ce7384 100644
--- a/src/testdir/test_conceal.vim
+++ b/src/testdir/test_conceal.vim
@@ -199,6 +199,7 @@ endfunc
 
 " Same as Test_conceal_wrapped_cursorline_wincolor(), but with 'rightleft'.
 func Test_conceal_wrapped_cursorline_wincolor_rightleft()
+  CheckFeature rightleft
   CheckScreendump
 
   let code =<< trim [CODE]
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index 7602bd3..098d5d0 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -1647,36 +1647,39 @@ endfunc
 func Test_diff_scroll_many_filler()
   20new
   vnew
-  call setline(1, ['^^^', '^^^', '$$$', '$$$'])
+  call setline(1, range(1, 40))
   diffthis
   setlocal scrolloff=0
   wincmd p
-  call setline(1, ['^^^', '^^^'] + repeat(['###'], 41) + ['$$$', '$$$'])
+  call setline(1, range(1, 20)->reverse() + ['###']->repeat(41) + range(21, 40)->reverse())
   diffthis
   setlocal scrolloff=0
   wincmd p
   redraw
 
   " Note: need a redraw after each scroll, otherwise the test always passes.
-  normal! G
-  redraw
-  call assert_equal(3, winsaveview().topline)
-  call assert_equal(18, winsaveview().topfill)
-  exe "normal! \<C-B>"
-  redraw
-  call assert_equal(3, winsaveview().topline)
-  call assert_equal(19, winsaveview().topfill)
-  exe "normal! \<C-B>"
-  redraw
-  call assert_equal(2, winsaveview().topline)
-  call assert_equal(0, winsaveview().topfill)
-  exe "normal! \<C-B>"
-  redraw
-  call assert_equal(1, winsaveview().topline)
-  call assert_equal(0, winsaveview().topfill)
+  for _ in range(2)
+    normal! G
+    redraw
+    call assert_equal(40, winsaveview().topline)
+    call assert_equal(19, winsaveview().topfill)
+    exe "normal! \<C-B>"
+    redraw
+    call assert_equal(22, winsaveview().topline)
+    call assert_equal(0, winsaveview().topfill)
+    exe "normal! \<C-B>"
+    redraw
+    call assert_equal(4, winsaveview().topline)
+    call assert_equal(0, winsaveview().topfill)
+    exe "normal! \<C-B>"
+    redraw
+    call assert_equal(1, winsaveview().topline)
+    call assert_equal(0, winsaveview().topfill)
+    set smoothscroll
+  endfor
 
-  bwipe!
-  bwipe!
+  set smoothscroll&
+  %bwipe!
 endfunc
 
 " This was trying to update diffs for a buffer being closed
@@ -2020,4 +2023,23 @@ func Test_diff_toggle_wrap_skipcol_leftcol()
   bwipe!
 endfunc
 
+" Ctrl-D reveals filler lines below the last line in the buffer.
+func Test_diff_eob_halfpage()
+  new
+  call setline(1, ['']->repeat(10) + ['a'])
+  diffthis
+  new
+  call setline(1, ['']->repeat(3) + ['a', 'b'])
+  diffthis
+  resize 5
+  wincmd j
+  resize 5
+  norm G
+  call assert_equal(7, line('w0'))
+  exe "norm! \<C-D>"
+  call assert_equal(8, line('w0'))
+
+  %bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_digraph.vim b/src/testdir/test_digraph.vim
index 4aed403..3312faf 100644
--- a/src/testdir/test_digraph.vim
+++ b/src/testdir/test_digraph.vim
@@ -595,13 +595,13 @@ func Test_digraph_getlist_function()
   call digraph_setlist([['aa', 'き'], ['bb', 'く']])
 
   for pair in digraph_getlist(1)
-    call assert_equal(digraph_get(pair[0]), pair[1])
+    call assert_equal(pair[1], digraph_get(pair[0]))
   endfor
 
   " We don't know how many digraphs are registered before, so check the number
   " of digraphs returned.
   call assert_equal(digraph_getlist()->len(), digraph_getlist(0)->len())
-  call assert_notequal((digraph_getlist()->len()), digraph_getlist(1)->len())
+  call assert_notequal(digraph_getlist()->len(), digraph_getlist(1)->len())
 
   call assert_fails('call digraph_getlist(0z12)', 'E974: Using a Blob as a Number')
 endfunc
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index 36e0525..789e44c 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -6,8 +6,6 @@ endif
 
 source check.vim
 source screendump.vim
-
-" Needed for testing basic rightleft: Test_edit_rightleft
 source view_util.vim
 
 " Needs to come first until the bug in getchar() is
@@ -1302,9 +1300,9 @@ func Test_edit_PAGEUP_PAGEDOWN()
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
   call assert_equal([0, 13, 1, 0], getpos('.'))
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
-  call assert_equal([0, 5, 1, 0], getpos('.'))
+  call assert_equal([0, 10, 1, 0], getpos('.'))
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   " <S-Up> is the same as <PageUp>
   " <S-Down> is the same as <PageDown>
   call cursor(1, 1)
@@ -1325,9 +1323,9 @@ func Test_edit_PAGEUP_PAGEDOWN()
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
   call assert_equal([0, 13, 1, 0], getpos('.'))
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
-  call assert_equal([0, 5, 1, 0], getpos('.'))
+  call assert_equal([0, 10, 1, 0], getpos('.'))
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   set nostartofline
   call cursor(30, 11)
   norm! zt
@@ -1338,9 +1336,9 @@ func Test_edit_PAGEUP_PAGEDOWN()
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
   call assert_equal([0, 13, 11, 0], getpos('.'))
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   call feedkeys("A\<PageUp>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   call cursor(1, 1)
   call feedkeys("A\<PageDown>\<esc>", 'tnix')
   call assert_equal([0, 9, 11, 0], getpos('.'))
@@ -1363,9 +1361,9 @@ func Test_edit_PAGEUP_PAGEDOWN()
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
   call assert_equal([0, 13, 11, 0], getpos('.'))
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   call feedkeys("A\<S-Up>\<esc>", 'tnix')
-  call assert_equal([0, 5, 11, 0], getpos('.'))
+  call assert_equal([0, 10, 11, 0], getpos('.'))
   call cursor(1, 1)
   call feedkeys("A\<S-Down>\<esc>", 'tnix')
   call assert_equal([0, 9, 11, 0], getpos('.'))
@@ -1964,8 +1962,8 @@ func Test_edit_ctrl_r_failed()
 
   let buf = RunVimInTerminal('', #{rows: 6, cols: 60})
 
-  " trying to insert a dictionary produces an error
-  call term_sendkeys(buf, "i\<C-R>={}\<CR>")
+  " trying to insert a blob produces an error
+  call term_sendkeys(buf, "i\<C-R>=0z\<CR>")
 
   " ending Insert mode should put the cursor back on the ':'
   call term_sendkeys(buf, ":\<Esc>")
@@ -2046,7 +2044,10 @@ func Test_edit_revins()
   call setline(1, 'one two three')
   exe "normal! wi\nfour"
   call assert_equal(['one two three', 'ruof'], getline(1, '$'))
-  set revins&
+  set backspace=indent,eol,start
+  exe "normal! ggA\<BS>:"
+  call assert_equal(['one two three:ruof'], getline(1, '$'))
+  set revins& backspace&
   bw!
 endfunc
 
@@ -2158,4 +2159,133 @@ func Test_edit_Ctrl_RSB()
   bwipe!
 endfunc
 
+func s:check_backspace(expected)
+  let g:actual = []
+  inoremap <buffer> <F2> <Cmd>let g:actual += [getline('.')]<CR>
+  set backspace=indent,eol,start
+
+  exe "normal i" .. repeat("\<BS>\<F2>", len(a:expected))
+  call assert_equal(a:expected, g:actual)
+
+  set backspace&
+  iunmap <buffer> <F2>
+  unlet g:actual
+endfunc
+
+" Test that backspace works with 'smarttab' and mixed Tabs and spaces.
+func Test_edit_backspace_smarttab_mixed()
+  set smarttab
+  call NewWindow(1, 30)
+  setlocal tabstop=4 shiftwidth=4
+
+  call setline(1, "\t    \t         \t a")
+  normal! $
+  call s:check_backspace([
+        \ "\t    \t         \ta",
+        \ "\t    \t        a",
+        \ "\t    \t    a",
+        \ "\t    \ta",
+        \ "\t    a",
+        \ "\ta",
+        \ "a",
+        \ ])
+
+  call CloseWindow()
+  set smarttab&
+endfunc
+
+" Test that backspace works with 'smarttab' and 'varsofttabstop'.
+func Test_edit_backspace_smarttab_varsofttabstop()
+  CheckFeature vartabs
+
+  set smarttab
+  call NewWindow(1, 30)
+  setlocal tabstop=8 varsofttabstop=6,2,5,3
+
+  call setline(1, "a\t    \t a")
+  normal! $
+  call s:check_backspace([
+        \ "a\t    \ta",
+        \ "a\t     a",
+        \ "a\ta",
+        \ "a     a",
+        \ "aa",
+        \ "a",
+        \ ])
+
+  call CloseWindow()
+  set smarttab&
+endfunc
+
+" Test that backspace works with 'smarttab' when a Tab is shown as "^I".
+func Test_edit_backspace_smarttab_list()
+  set smarttab
+  call NewWindow(1, 30)
+  setlocal tabstop=4 shiftwidth=4 list listchars=
+
+  call setline(1, "\t    \t         \t a")
+  normal! $
+  call s:check_backspace([
+        \ "\t    \t        a",
+        \ "\t    \t    a",
+        \ "\t    \ta",
+        \ "\t  a",
+        \ "a",
+        \ ])
+
+  call CloseWindow()
+  set smarttab&
+endfunc
+
+" Test that backspace works with 'smarttab' and 'breakindent'.
+func Test_edit_backspace_smarttab_breakindent()
+  CheckFeature linebreak
+
+  set smarttab
+  call NewWindow(3, 17)
+  setlocal tabstop=4 shiftwidth=4 breakindent breakindentopt=min:5
+
+  call setline(1, "\t    \t         \t a")
+  normal! $
+  call s:check_backspace([
+        \ "\t    \t         \ta",
+        \ "\t    \t        a",
+        \ "\t    \t    a",
+        \ "\t    \ta",
+        \ "\t    a",
+        \ "\ta",
+        \ "a",
+        \ ])
+
+  call CloseWindow()
+  set smarttab&
+endfunc
+
+" Test that backspace works with 'smarttab' and virtual text.
+func Test_edit_backspace_smarttab_virtual_text()
+  CheckFeature textprop
+
+  set smarttab
+  call NewWindow(1, 50)
+  setlocal tabstop=4 shiftwidth=4
+
+  call setline(1, "\t    \t         \t a")
+  call prop_type_add('theprop', {})
+  call prop_add(1, 3, {'type': 'theprop', 'text': 'text'})
+  normal! $
+  call s:check_backspace([
+        \ "\t    \t         \ta",
+        \ "\t    \t        a",
+        \ "\t    \t    a",
+        \ "\t    \ta",
+        \ "\t    a",
+        \ "\ta",
+        \ "a",
+        \ ])
+
+  call CloseWindow()
+  call prop_type_delete('theprop')
+  set smarttab&
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_expr.vim b/src/testdir/test_expr.vim
index c1869c1..6acfe00 100644
--- a/src/testdir/test_expr.vim
+++ b/src/testdir/test_expr.vim
@@ -950,6 +950,22 @@ func Test_string_interp()
     endif
     call assert_equal(0, tmp)
 
+    #" Dict interpolation
+    VAR d = {'a': 10, 'b': [1, 2]}
+    call assert_equal("{'a': 10, 'b': [1, 2]}", $'{d}')
+    VAR emptydict = {}
+    call assert_equal("a{}b", $'a{emptydict}b')
+    VAR nulldict = test_null_dict()
+    call assert_equal("a{}b", $'a{nulldict}b')
+
+    #" List interpolation
+    VAR l = ['a', 'b', 'c']
+    call assert_equal("['a', 'b', 'c']", $'{l}')
+    VAR emptylist = []
+    call assert_equal("a[]b", $'a{emptylist}b')
+    VAR nulllist = test_null_list()
+    call assert_equal("a[]b", $'a{nulllist}b')
+
     #" Stray closing brace.
     call assert_fails('echo $"moo}"', 'E1278:')
     #" Undefined variable in expansion.
diff --git a/src/testdir/test_filechanged.vim b/src/testdir/test_filechanged.vim
index c3a5664..12ac4cc 100644
--- a/src/testdir/test_filechanged.vim
+++ b/src/testdir/test_filechanged.vim
@@ -11,8 +11,12 @@ func Test_FileChangedShell_reload()
   new Xchanged_r
   call setline(1, 'reload this')
   write
-  " Need to wait until the timestamp would change by at least a second.
-  sleep 2
+  " Need to wait until the timestamp would change.
+  if has('nanotime')
+    sleep 10m
+  else
+    sleep 2
+  endif
   silent !echo 'extra line' >>Xchanged_r
   checktime
   call assert_equal('changed', g:reason)
@@ -50,7 +54,11 @@ func Test_FileChangedShell_reload()
   call assert_equal('new line', getline(1))
 
   " Only time changed
-  sleep 2
+  if has('nanotime')
+    sleep 10m
+  else
+    sleep 2
+  endif
   silent !touch Xchanged_r
   let g:reason = ''
   checktime
@@ -65,7 +73,11 @@ func Test_FileChangedShell_reload()
     call setline(2, 'before write')
     write
     call setline(2, 'after write')
-    sleep 2
+    if has('nanotime')
+      sleep 10m
+    else
+      sleep 2
+    endif
     silent !echo 'different line' >>Xchanged_r
     let g:reason = ''
     checktime
@@ -192,8 +204,12 @@ func Test_file_changed_dialog()
   new Xchanged_d
   call setline(1, 'reload this')
   write
-  " Need to wait until the timestamp would change by at least a second.
-  sleep 2
+  " Need to wait until the timestamp would change.
+  if has('nanotime')
+    sleep 10m
+  else
+    sleep 2
+  endif
   silent !echo 'extra line' >>Xchanged_d
   call feedkeys('L', 'L')
   checktime
@@ -228,7 +244,11 @@ func Test_file_changed_dialog()
   call assert_equal('new line', getline(1))
 
   " Only time changed, no prompt
-  sleep 2
+  if has('nanotime')
+    sleep 10m
+  else
+    sleep 2
+  endif
   silent !touch Xchanged_d
   let v:warningmsg = ''
   checktime Xchanged_d
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index d77e5e0..f8fe9ec 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -126,6 +126,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     blade: ['file.blade.php'],
     blank: ['file.bl'],
     blueprint: ['file.blp'],
+    bp: ['Android.bp'],
     bsdl: ['file.bsd', 'file.bsdl'],
     bst: ['file.bst'],
     bzl: ['file.bazel', 'file.bzl', 'WORKSPACE', 'WORKSPACE.bzlmod'],
@@ -144,6 +145,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     cf: ['file.cfm', 'file.cfi', 'file.cfc'],
     cfengine: ['cfengine.conf'],
     cfg: ['file.hgrc', 'filehgrc', 'hgrc', 'some-hgrc'],
+    cgdbrc: ['cgdbrc'],
     ch: ['file.chf'],
     chaiscript: ['file.chai'],
     chaskell: ['file.chs'],
@@ -153,16 +155,17 @@ def s:GetFilenameChecks(): dict<list<string>>
     chuck: ['file.ck'],
     cl: ['file.eni'],
     clean: ['file.dcl', 'file.icl'],
-    clojure: ['file.clj', 'file.cljs', 'file.cljx', 'file.cljc'],
+    clojure: ['file.clj', 'file.cljs', 'file.cljx', 'file.cljc', 'init.trans', 'any/etc/translate-shell', '.trans'],
     cmake: ['CMakeLists.txt', 'file.cmake', 'file.cmake.in'],
+    cmakecache: ['CMakeCache.txt'],
     cmod: ['file.cmod'],
     cmusrc: ['any/.cmus/autosave', 'any/.cmus/rc', 'any/.cmus/command-history', 'any/.cmus/file.theme', 'any/cmus/rc', 'any/cmus/file.theme', '/.cmus/autosave', '/.cmus/command-history', '/.cmus/file.theme', '/.cmus/rc', '/cmus/file.theme', '/cmus/rc'],
     cobol: ['file.cbl', 'file.cob', 'file.lib'],
     coco: ['file.atg'],
     conaryrecipe: ['file.recipe'],
-    conf: ['auto.master', 'file.conf'],
+    conf: ['auto.master', 'file.conf', 'texdoc.cnf', '.x11vncrc', '.chktexrc', '.ripgreprc', 'ripgreprc', 'file.ctags', '.mbsyncrc'],
     config: ['configure.in', 'configure.ac', '/etc/hostname.file', 'any/etc/hostname.file'],
-    confini: ['/etc/pacman.conf', 'any/etc/pacman.conf', 'mpv.conf', 'any/.aws/config', 'any/.aws/credentials', 'file.nmconnection'],
+    confini: ['pacman.conf', 'paru.conf', 'mpv.conf', 'any/.aws/config', 'any/.aws/credentials', 'file.nmconnection'],
     context: ['tex/context/any/file.tex', 'file.mkii', 'file.mkiv', 'file.mkvi', 'file.mkxl', 'file.mklx'],
     cook: ['file.cook'],
     corn: ['file.corn'],
@@ -210,16 +213,24 @@ def s:GetFilenameChecks(): dict<list<string>>
     dnsmasq: ['/etc/dnsmasq.conf', '/etc/dnsmasq.d/file', 'any/etc/dnsmasq.conf', 'any/etc/dnsmasq.d/file'],
     dockerfile: ['Containerfile', 'Dockerfile', 'dockerfile', 'file.Dockerfile', 'file.dockerfile', 'Dockerfile.debian', 'Containerfile.something'],
     dosbatch: ['file.bat'],
-    dosini: ['/etc/yum.conf', 'file.ini', 'npmrc', '.npmrc', 'php.ini', 'php.ini-5', 'php.ini-file', '/etc/yum.repos.d/file', 'any/etc/yum.conf', 'any/etc/yum.repos.d/file', 'file.wrap', 'file.vbp', 'ja2.ini', 'JA2.INI'],
+    dosini: ['/etc/yum.conf', '/etc/nfs.conf', '/etc/nfsmount.conf', 'file.ini',
+             'npmrc', '.npmrc', 'php.ini', 'php.ini-5', 'php.ini-file',
+             '/etc/yum.repos.d/file', 'any/etc/yum.conf', 'any/etc/yum.repos.d/file', 'file.wrap',
+             'file.vbp', 'ja2.ini', 'JA2.INI', 'mimeapps.list', 'pip.conf', 'setup.cfg', 'pudb.cfg',
+             '.coveragerc', '.pypirc', '.gitlint', '.oelint.cfg', 'pylintrc', '.pylintrc',
+             '/home/user/.config/bpython/config', '/home/user/.config/mypy/config', '.wakatime.cfg', '.replyrc',
+             'psprint.conf', 'sofficerc', 'any/.config/lxqt/globalkeyshortcuts.conf', 'any/.config/screengrab/screengrab.conf',
+             'any/.local/share/flatpak/repo/config', '.notmuch-config'],
     dot: ['file.dot', 'file.gv'],
     dracula: ['file.drac', 'file.drc', 'filelvs', 'filelpe', 'drac.file', 'lpe', 'lvs', 'some-lpe', 'some-lvs'],
     dtd: ['file.dtd'],
     dtrace: ['/usr/lib/dtrace/io.d'],
-    dts: ['file.dts', 'file.dtsi', 'file.dtso', 'file.its'],
+    dts: ['file.dts', 'file.dtsi', 'file.dtso', 'file.its', 'file.keymap'],
     dune: ['jbuild', 'dune', 'dune-project', 'dune-workspace'],
     dylan: ['file.dylan'],
     dylanintr: ['file.intr'],
     dylanlid: ['file.lid'],
+    earthfile: ['Earthfile'],
     ecd: ['file.ecd'],
     edif: ['file.edf', 'file.edif', 'file.edo'],
     editorconfig: ['.editorconfig'],
@@ -283,7 +294,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     glsl: ['file.glsl'],
     gn: ['file.gn', 'file.gni'],
     gnash: ['gnashrc', '.gnashrc', 'gnashpluginrc', '.gnashpluginrc'],
-    gnuplot: ['file.gpi', '.gnuplot', 'file.gnuplot'],
+    gnuplot: ['file.gpi', '.gnuplot', 'file.gnuplot', '.gnuplot_history'],
     go: ['file.go'],
     gomod: ['go.mod'],
     gosum: ['go.sum', 'go.work.sum'],
@@ -312,7 +323,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     hcl: ['file.hcl'],
     heex: ['file.heex'],
     hercules: ['file.vc', 'file.ev', 'file.sum', 'file.errsum'],
-    hex: ['file.hex', 'file.h32'],
+    hex: ['file.hex', 'file.ihex', 'file.ihe', 'file.ihx', 'file.int', 'file.mcs', 'file.h32', 'file.h80', 'file.h86', 'file.a43', 'file.a90'],
     hgcommit: ['hg-editor-file.txt'],
     hjson: ['file.hjson'],
     hlsplaylist: ['file.m3u', 'file.m3u8'],
@@ -342,7 +353,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     janet: ['file.janet'],
     java: ['file.java', 'file.jav'],
     javacc: ['file.jj', 'file.jjt'],
-    javascript: ['file.js', 'file.jsm', 'file.javascript', 'file.es', 'file.mjs', 'file.cjs'],
+    javascript: ['file.js', 'file.jsm', 'file.javascript', 'file.es', 'file.mjs', 'file.cjs', '.node_repl_history'],
     'javascript.glimmer': ['file.gjs'],
     javascriptreact: ['file.jsx'],
     jess: ['file.clp'],
@@ -350,9 +361,9 @@ def s:GetFilenameChecks(): dict<list<string>>
     jq: ['file.jq'],
     jovial: ['file.jov', 'file.j73', 'file.jovial'],
     jproperties: ['file.properties', 'file.properties_xx', 'file.properties_xx_xx', 'some.properties_xx_xx_file', 'org.eclipse.xyz.prefs'],
-    json: ['file.json', 'file.jsonp', 'file.json-patch', 'file.geojson', 'file.webmanifest', 'Pipfile.lock', 'file.ipynb', '.prettierrc', '.firebaserc', '.stylelintrc', 'file.slnf'],
+    json: ['file.json', 'file.jsonp', 'file.json-patch', 'file.geojson', 'file.webmanifest', 'Pipfile.lock', 'file.ipynb', 'file.jupyterlab-settings', '.prettierrc', '.firebaserc', '.stylelintrc', 'file.slnf', 'file.sublime-project', 'file.sublime-settings', 'file.sublime-workspace', 'file.bd', 'file.bda', 'file.xci', 'flake.lock'],
     json5: ['file.json5'],
-    jsonc: ['file.jsonc', '.babelrc', '.eslintrc', '.jsfmtrc', '.jshintrc', '.hintrc', '.swrc', 'jsconfig.json', 'tsconfig.json', 'tsconfig.test.json', 'tsconfig-test.json', '.luaurc'],
+    jsonc: ['file.jsonc', '.babelrc', '.eslintrc', '.jsfmtrc', '.jshintrc', '.jscsrc', '.vsconfig', '.hintrc', '.swrc', 'jsconfig.json', 'tsconfig.json', 'tsconfig.test.json', 'tsconfig-test.json', '.luaurc'],
     jsonl: ['file.jsonl'],
     jsonnet: ['file.jsonnet', 'file.libsonnet'],
     jsp: ['file.jsp'],
@@ -368,7 +379,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     kwt: ['file.k'],
     lace: ['file.ace', 'file.ACE'],
     latte: ['file.latte', 'file.lte'],
-    ld: ['file.ld'],
+    ld: ['file.ld', 'any/usr/lib/aarch64-xilinx-linux/ldscripts/aarch64elf32b.x'],
     ldif: ['file.ldif'],
     lean: ['file.lean'],
     ledger: ['file.ldg', 'file.ledger', 'file.journal'],
@@ -383,7 +394,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     limits: ['/etc/limits', '/etc/anylimits.conf', '/etc/anylimits.d/file.conf', '/etc/limits.conf', '/etc/limits.d/file.conf', '/etc/some-limits.conf', '/etc/some-limits.d/file.conf', 'any/etc/limits', 'any/etc/limits.conf', 'any/etc/limits.d/file.conf', 'any/etc/some-limits.conf', 'any/etc/some-limits.d/file.conf'],
     liquidsoap: ['file.liq'],
     liquid: ['file.liquid'],
-    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', 'file.cl', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc'],
+    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', 'file.cl', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc', 'file.stsg', 'any/local/share/supertux2/config'],
     lite: ['file.lite', 'file.lt'],
     litestep: ['/LiteStep/any/file.rc', 'any/LiteStep/any/file.rc'],
     logcheck: ['/etc/logcheck/file.d-some/file', '/etc/logcheck/file.d/file', 'any/etc/logcheck/file.d-some/file', 'any/etc/logcheck/file.d/file'],
@@ -396,13 +407,13 @@ def s:GetFilenameChecks(): dict<list<string>>
     lpc: ['file.lpc', 'file.ulpc'],
     lsl: ['file.lsl'],
     lss: ['file.lss'],
-    lua: ['file.lua', 'file.rockspec', 'file.nse', '.luacheckrc', '.busted'],
+    lua: ['file.lua', 'file.tlu', 'file.rockspec', 'file.nse', '.lua_history', '.luacheckrc', '.busted', 'rock_manifest', 'config.ld'],
     luau: ['file.luau'],
     lynx: ['lynx.cfg'],
     lyrics: ['file.lrc'],
     m3build: ['m3makefile', 'm3overrides'],
     m3quake: ['file.quake', 'cm3.cfg'],
-    m4: ['file.at'],
+    m4: ['file.at', '.m4_history'],
     mail: ['snd.123', '.letter', '.letter.123', '.followup', '.article', '.article.123', 'pico.123', 'mutt-xx-xxx', 'muttng-xx-xxx', 'ae123.txt', 'file.eml', 'reportbug-file'],
     mailaliases: ['/etc/mail/aliases', '/etc/aliases', 'any/etc/aliases', 'any/etc/mail/aliases'],
     mailcap: ['.mailcap', 'mailcap'],
@@ -466,6 +477,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     msidl: ['file.odl', 'file.mof'],
     msql: ['file.msql'],
     mojo: ['file.mojo', 'file.🔥'],
+    msmtp: ['.msmtprc'],
     mupad: ['file.mu'],
     mush: ['file.mush'],
     mustache: ['file.mustache'],
@@ -481,7 +493,7 @@ def s:GetFilenameChecks(): dict<list<string>>
              'any/.muttng/muttrc', 'any/.muttng/muttrc-file',
              'any/etc/Muttrc.d/file', 'muttngrc', 'muttngrc-file', 'muttrc',
              'muttrc-file'],
-    mysql: ['file.mysql'],
+    mysql: ['file.mysql', '.mysql_history'],
     n1ql: ['file.n1ql', 'file.nql'],
     named: ['namedfile.conf', 'rndcfile.conf', 'named-file.conf', 'named.conf', 'rndc-file.conf', 'rndc-file.key', 'rndc.conf', 'rndc.key'],
     nanorc: ['/etc/nanorc', 'file.nanorc', 'any/etc/nanorc'],
@@ -503,9 +515,10 @@ def s:GetFilenameChecks(): dict<list<string>>
     obse: ['file.obl', 'file.obse', 'file.oblivion', 'file.obscript'],
     ocaml: ['file.ml', 'file.mli', 'file.mll', 'file.mly', '.ocamlinit', 'file.mlt', 'file.mlp', 'file.mlip', 'file.mli.cppo', 'file.ml.cppo'],
     occam: ['file.occ'],
-    octave: ['octaverc', '.octaverc', 'octave.conf'],
+    octave: ['octaverc', '.octaverc', 'octave.conf', 'any/.local/share/octave/history'],
     odin: ['file.odin'],
     omnimark: ['file.xom', 'file.xin'],
+    ondir: ['.ondirrc'],
     opam: ['opam', 'file.opam', 'file.opam.template'],
     openroad: ['file.or'],
     openscad: ['file.scad'],
@@ -516,10 +529,11 @@ def s:GetFilenameChecks(): dict<list<string>>
     pacmanlog: ['pacman.log'],
     pamconf: ['/etc/pam.conf', '/etc/pam.d/file', 'any/etc/pam.conf', 'any/etc/pam.d/file'],
     pamenv: ['/etc/security/pam_env.conf', '/home/user/.pam_environment', '.pam_environment', 'pam_env.conf'],
+    pandoc: ['file.pandoc', 'file.pdk', 'file.pd', 'file.pdc'],
     papp: ['file.papp', 'file.pxml', 'file.pxsl'],
     pascal: ['file.pas', 'file.dpr', 'file.lpr'],
     passwd: ['any/etc/passwd', 'any/etc/passwd-', 'any/etc/passwd.edit', 'any/etc/shadow', 'any/etc/shadow-', 'any/etc/shadow.edit', 'any/var/backups/passwd.bak', 'any/var/backups/shadow.bak', '/etc/passwd', '/etc/passwd-', '/etc/passwd.edit', '/etc/shadow', '/etc/shadow-', '/etc/shadow.edit', '/var/backups/passwd.bak', '/var/backups/shadow.bak'],
-    pbtxt: ['file.pbtxt'],
+    pbtxt: ['file.txtpb', 'file.textproto', 'file.textpb', 'file.pbtxt'],
     pccts: ['file.g'],
     pcmk: ['file.pcmk'],
     pdf: ['file.pdf'],
@@ -563,13 +577,13 @@ def s:GetFilenameChecks(): dict<list<string>>
     pymanifest: ['MANIFEST.in'],
     pyret: ['file.arr'],
     pyrex: ['file.pyx', 'file.pxd'],
-    python: ['file.py', 'file.pyw', '.pythonstartup', '.pythonrc', 'file.ptl', 'file.pyi', 'SConstruct'],
+    python: ['file.py', 'file.pyw', '.pythonstartup', '.pythonrc', '.python_history', '.jline-jython.history', 'file.ptl', 'file.pyi', 'SConstruct'],
     ql: ['file.ql', 'file.qll'],
     qml: ['file.qml', 'file.qbs'],
     qmldir: ['qmldir'],
     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'],
     quarto: ['file.qmd'],
-    r: ['file.r', '.Rprofile', 'Rprofile', 'Rprofile.site'],
+    r: ['file.r', '.Rhistory', '.Rprofile', 'Rprofile', 'Rprofile.site'],
     racket: ['file.rkt', 'file.rktd', 'file.rktl'],
     radiance: ['file.rad', 'file.mat'],
     raku: ['file.pm6', 'file.p6', 'file.t6', 'file.pod6', 'file.raku', 'file.rakumod', 'file.rakudoc', 'file.rakutest'],
@@ -581,7 +595,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     readline: ['.inputrc', 'inputrc'],
     rego: ['file.rego'],
     remind: ['.reminders', 'file.remind', 'file.rem', '.reminders-file'],
-    requirements: ['file.pip', 'requirements.txt'],
+    requirements: ['file.pip', 'requirements.txt', 'dev-requirements.txt', 'constraints.txt', 'requirements.in', 'requirements/dev.txt', 'requires/dev.txt'],
     rescript: ['file.res', 'file.resi'],
     resolv: ['resolv.conf'],
     reva: ['file.frt'],
@@ -595,6 +609,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     rpgle: ['file.rpgle', 'file.rpgleinc'],
     robot: ['file.robot', 'file.resource'],
     robots: ['robots.txt'],
+    roc: ['file.roc'],
     ron: ['file.ron'],
     routeros: ['file.rsc'],
     rpcgen: ['file.x'],
@@ -602,7 +617,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     rrst: ['file.rrst', 'file.srst'],
     rst: ['file.rst'],
     rtf: ['file.rtf'],
-    ruby: ['.irbrc', 'irbrc', 'file.rb', 'file.rbw', 'file.gemspec', 'file.ru', 'Gemfile', 'file.builder', 'file.rxml', 'file.rjs', 'file.rant', 'file.rake', 'rakefile', 'Rakefile', 'rantfile', 'Rantfile', 'rakefile-file', 'Rakefile-file', 'Puppetfile', 'Vagrantfile'],
+    ruby: ['.irbrc', 'irbrc', '.irb_history', 'irb_history', 'file.rb', 'file.rbw', 'file.gemspec', 'file.ru', 'Gemfile', 'file.builder', 'file.rxml', 'file.rjs', 'file.rant', 'file.rake', 'rakefile', 'Rakefile', 'rantfile', 'Rantfile', 'rakefile-file', 'Rakefile-file', 'Puppetfile', 'Vagrantfile'],
     rust: ['file.rs'],
     samba: ['smb.conf'],
     sas: ['file.sas'],
@@ -622,7 +637,10 @@ def s:GetFilenameChecks(): dict<list<string>>
     services: ['/etc/services', 'any/etc/services'],
     setserial: ['/etc/serial.conf', 'any/etc/serial.conf'],
     sexplib: ['file.sexp'],
-    sh: ['.bashrc', '.bash_profile', '.bash-profile', '.bash_logout', '.bash-logout', '.bash_aliases', '.bash-aliases', '/tmp/bash-fc-3Ozjlw', '/tmp/bash-fc.3Ozjlw', 'PKGBUILD', 'APKBUILD', 'file.bash', '/usr/share/doc/bash-completion/filter.sh', '/etc/udev/cdsymlinks.conf', 'any/etc/udev/cdsymlinks.conf', 'file.bats'],
+    sh: ['.bashrc', '.bash_profile', '.bash-profile', '.bash_logout', '.bash-logout', '.bash_aliases', '.bash-aliases', '.bash_history', '.bash-history',
+         '/tmp/bash-fc-3Ozjlw', '/tmp/bash-fc.3Ozjlw', 'PKGBUILD', 'APKBUILD', 'file.bash', '/usr/share/doc/bash-completion/filter.sh',
+         '/etc/udev/cdsymlinks.conf', 'any/etc/udev/cdsymlinks.conf', 'file.bats', '.ash_history', 'any/etc/neofetch/config.conf', '.xprofile',
+         'user-dirs.defaults', 'user-dirs.dirs', 'makepkg.conf', '.makepkg.conf'],
     sieve: ['file.siv', 'file.sieve'],
     sil: ['file.sil'],
     simula: ['file.sim'],
@@ -653,7 +671,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     spice: ['file.sp', 'file.spice'],
     spup: ['file.speedup', 'file.spdata', 'file.spd'],
     spyce: ['file.spy', 'file.spi'],
-    sql: ['file.tyb', 'file.tyc', 'file.pkb', 'file.pks'],
+    sql: ['file.tyb', 'file.tyc', 'file.pkb', 'file.pks', '.sqlite_history'],
     sqlj: ['file.sqlj'],
     prql: ['file.prql'],
     sqr: ['file.sqr', 'file.sqi'],
@@ -725,14 +743,14 @@ def s:GetFilenameChecks(): dict<list<string>>
     tal: ['file.tal'],
     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'],
+    tcl: ['file.tcl', 'file.tm', 'file.tk', 'file.itcl', 'file.itk', 'file.jacl', '.tclshrc', 'tclsh.rc', '.wishrc', '.tclsh-history', '.xsctcmdhistory', '.xsdbcmdhistory'],
     tablegen: ['file.td'],
     teal: ['file.tl'],
     template: ['file.tmpl'],
     teraterm: ['file.ttl'],
     terminfo: ['file.ti'],
     'terraform-vars': ['file.tfvars'],
-    tex: ['file.latex', 'file.sty', 'file.dtx', 'file.ltx', 'file.bbl'],
+    tex: ['file.latex', 'file.sty', 'file.dtx', 'file.ltx', 'file.bbl', 'any/.texlive/texmf-config/tex/latex/file/file.cfg', 'file.pgf', 'file.nlo', 'file.nls', 'file.out', 'file.thm', 'file.eps_tex', 'file.pygtex', 'file.pygstyle', 'file.clo', 'file.aux', 'file.brf', 'file.ind', 'file.lof', 'file.loe', 'file.nav', 'file.vrb', 'file.ins', 'file.tikz', 'file.bbx', 'file.cbx', 'file.beamer'],
     texinfo: ['file.texinfo', 'file.texi', 'file.txi'],
     texmf: ['texmf.cnf'],
     text: ['file.text', 'file.txt', 'README', 'LICENSE', 'COPYING', 'AUTHORS', '/usr/share/doc/bash-completion/AUTHORS', '/etc/apt/apt.conf.d/README', '/etc/Muttrc.d/README'],
@@ -743,7 +761,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     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'],
+    toml: ['file.toml', 'Gopkg.lock', 'Pipfile', '/home/user/.cargo/config', '.black'],
     tpp: ['file.tpp'],
     treetop: ['file.treetop'],
     trustees: ['trustees.conf'],
@@ -753,9 +771,10 @@ def s:GetFilenameChecks(): dict<list<string>>
     tssop: ['file.tssop'],
     tsv: ['file.tsv'],
     twig: ['file.twig'],
-    typescript: ['file.mts', 'file.cts'],
+    typescript: ['file.mts', 'file.cts', '.ts_node_repl_history'],
     'typescript.glimmer': ['file.gts'],
     typescriptreact: ['file.tsx'],
+    typespec: ['file.tsp'],
     ungrammar: ['file.ungram'],
     uc: ['file.uc'],
     udevconf: ['/etc/udev/udev.conf', 'any/etc/udev/udev.conf'],
@@ -785,7 +804,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     vgrindefs: ['vgrindefs'],
     vhdl: ['file.hdl', 'file.vhd', 'file.vhdl', 'file.vbe', 'file.vst', 'file.vhdl_123', 'file.vho', 'some.vhdl_1', 'some.vhdl_1-file'],
     vhs: ['file.tape'],
-    vim: ['file.vim', '.exrc', '_exrc', 'some-vimrc', 'some-vimrc-file', 'vimrc', 'vimrc-file'],
+    vim: ['file.vim', '.exrc', '_exrc', 'some-vimrc', 'some-vimrc-file', 'vimrc', 'vimrc-file', '.netrwhist'],
     viminfo: ['.viminfo', '_viminfo'],
     vmasm: ['file.mar'],
     voscm: ['file.cm'],
@@ -811,7 +830,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     xinetd: ['/etc/xinetd.conf', '/etc/xinetd.d/file', 'any/etc/xinetd.conf', 'any/etc/xinetd.d/file'],
     xkb: ['/usr/share/X11/xkb/compat/pc', '/usr/share/X11/xkb/geometry/pc', '/usr/share/X11/xkb/keycodes/evdev', '/usr/share/X11/xkb/symbols/pc', '/usr/share/X11/xkb/types/pc'],
     xmath: ['file.msc', 'file.msf'],
-    xml: ['/etc/blkid.tab', '/etc/blkid.tab.old', 'file.xmi', 'file.csproj', 'file.csproj.user', 'file.fsproj', 'file.fsproj.user', 'file.vbproj', 'file.vbproj.user', 'file.ui', 'file.tpm', '/etc/xdg/menus/file.menu', 'fglrxrc', 'file.xlf', 'file.xliff', 'file.xul', 'file.wsdl', 'file.wpl', 'any/etc/blkid.tab', 'any/etc/blkid.tab.old', 'any/etc/xdg/menus/file.menu', 'file.atom', 'file.rss', 'file.cdxml', 'file.psc1', 'file.mpd'],
+    xml: ['/etc/blkid.tab', '/etc/blkid.tab.old', 'file.xmi', 'file.csproj', 'file.csproj.user', 'file.fsproj', 'file.fsproj.user', 'file.vbproj', 'file.vbproj.user', 'file.ui', 'file.tpm', '/etc/xdg/menus/file.menu', 'fglrxrc', 'file.xlf', 'file.xliff', 'file.xul', 'file.wsdl', 'file.wpl', 'any/etc/blkid.tab', 'any/etc/blkid.tab.old', 'any/etc/xdg/menus/file.menu', 'file.atom', 'file.rss', 'file.cdxml', 'file.psc1', 'file.mpd', 'fonts.conf', 'file.xcu', 'file.xlb', 'file.xlc', 'file.xba', 'file.xpr', 'file.xpfm', 'file.spfm', 'file.bxml'],
     xmodmap: ['anyXmodmap', 'Xmodmap', 'some-Xmodmap', 'some-xmodmap', 'some-xmodmap-file', 'xmodmap', 'xmodmap-file'],
     xpm: ['file.xpm'],
     xpm2: ['file.xpm2'],
@@ -820,16 +839,17 @@ def s:GetFilenameChecks(): dict<list<string>>
     xsd: ['file.xsd'],
     xslt: ['file.xsl', 'file.xslt'],
     yacc: ['file.yy', 'file.yxx', 'file.y++'],
-    yaml: ['file.yaml', 'file.yml', 'file.eyaml', '.clangd', '.clang-format', '.clang-tidy'],
+    yaml: ['file.yaml', 'file.yml', 'file.eyaml', 'any/.bundle/config', '.clangd', '.clang-format', '.clang-tidy', 'file.mplstyle', 'matplotlibrc', 'yarn.lock'],
     yang: ['file.yang'],
     yuck: ['file.yuck'],
     z8a: ['file.z8a'],
+    zathurarc: ['zathurarc'],
     zig: ['file.zig', 'build.zig.zon'],
     zimbu: ['file.zu'],
     zimbutempl: ['file.zut'],
     zserio: ['file.zs'],
-    zsh: ['.zprofile', '/etc/zprofile', '.zfbfmarks', 'file.zsh',
-          '.zcompdump', '.zlogin', '.zlogout', '.zshenv', '.zshrc',
+    zsh: ['.zprofile', '/etc/zprofile', '.zfbfmarks', 'file.zsh', 'file.zsh-theme', 'file.zunit',
+          '.zcompdump', '.zlogin', '.zlogout', '.zshenv', '.zshrc', '.zsh_history',
           '.zcompdump-file', '.zlog', '.zlog-file', '.zsh', '.zsh-file',
           'any/etc/zprofile', 'zlog', 'zlog-file', 'zsh', 'zsh-file'],
 
@@ -2422,4 +2442,26 @@ func Test_def_file()
   filetype off
 endfunc
 
+func Test_uci_file()
+  filetype on
+
+  call mkdir('any/etc/config', 'pR')
+  call writefile(['config firewall'], 'any/etc/config/firewall', 'D')
+  split any/etc/config/firewall
+  call assert_equal('uci', &filetype)
+  bwipe!
+
+  call writefile(['# config for nginx here'], 'any/etc/config/firewall', 'D')
+  split any/etc/config/firewall
+  call assert_notequal('uci', &filetype)
+  bwipe!
+
+  call writefile(['# Copyright Cool Cats 1997', 'config firewall'], 'any/etc/config/firewall', 'D')
+  split any/etc/config/firewall
+  call assert_equal('uci', &filetype)
+  bwipe!
+
+  filetype off
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index fecebc4..f0d7385 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -3794,6 +3794,43 @@ func Test_funcref_to_string()
   call assert_equal("function('g:Test_funcref_to_string')", string(Fn))
 endfunc
 
+" A funcref cannot start with an underscore (except when used as a protected
+" class or object variable)
+func Test_funcref_with_underscore()
+  " at script level
+  let lines =<< trim END
+    vim9script
+    var _Fn = () => 10
+  END
+  call v9.CheckSourceFailure(lines, 'E704: Funcref variable name must start with a capital: _Fn')
+
+  " inside a function
+  let lines =<< trim END
+    vim9script
+    def Func()
+      var _Fn = () => 10
+    enddef
+    defcompile
+  END
+  call v9.CheckSourceFailure(lines, 'E704: Funcref variable name must start with a capital: _Fn', 1)
+
+  " as a function argument
+  let lines =<< trim END
+    vim9script
+    def Func(_Fn: func)
+    enddef
+    defcompile
+  END
+  call v9.CheckSourceFailure(lines, 'E704: Funcref variable name must start with a capital: _Fn', 2)
+
+  " as a lambda argument
+  let lines =<< trim END
+    vim9script
+    var Fn = (_Farg: func) => 10
+  END
+  call v9.CheckSourceFailure(lines, 'E704: Funcref variable name must start with a capital: _Farg', 2)
+endfunc
+
 " Test for isabsolutepath()
 func Test_isabsolutepath()
   call assert_false(isabsolutepath(''))
diff --git a/src/testdir/test_highlight.vim b/src/testdir/test_highlight.vim
index d6c9f50..9bc5f12 100644
--- a/src/testdir/test_highlight.vim
+++ b/src/testdir/test_highlight.vim
@@ -856,6 +856,15 @@ func Test_highlight_User()
   hi clear
 endfunc
 
+" Test for MsgArea highlighting
+func Test_highlight_MsgArea()
+  CheckNotGui
+  hi MsgArea ctermfg=20
+  redraw!
+  call assert_equal('20', synIDattr(synIDtrans(hlID('MsgArea')), 'fg'))
+  hi clear
+endfunc
+
 " Test for using RGB color values in a highlight group
 func Test_xxlast_highlight_RGB_color()
   CheckCanRunGui
diff --git a/src/testdir/test_history.vim b/src/testdir/test_history.vim
index 482328a..19490f2 100644
--- a/src/testdir/test_history.vim
+++ b/src/testdir/test_history.vim
@@ -254,7 +254,7 @@ func Test_history_crypt_key()
   set key& bs& ts&
 endfunc
 
-" The following used to overflow and causing an use-after-free
+" The following used to overflow and causing a use-after-free
 func Test_history_max_val()
 
   set history=10
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index 52306e8..eb89a15 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -1130,7 +1130,7 @@ func Test_complete_wholeline_unlistedbuf()
   edit Xfile1
   enew
   set complete=U
-  " completing from a unloaded buffer should fail
+  " completing from an unloaded buffer should fail
   exe "normal! ia\<C-X>\<C-L>\<C-P>"
   call assert_equal('a', getline(1))
   %d
@@ -2429,4 +2429,26 @@ func Test_complete_changed_complete_info()
   call StopVimInTerminal(buf)
 endfunc
 
+func Test_completefunc_first_call_complete_add()
+  new
+
+  func Complete(findstart, base) abort
+    if a:findstart
+      let col = col('.')
+      call complete_add('#')
+      return col - 1
+    else
+      return []
+    endif
+  endfunc
+
+  set completeopt=longest completefunc=Complete
+  " This used to cause heap-buffer-overflow
+  call assert_fails('call feedkeys("ifoo#\<C-X>\<C-U>", "xt")', 'E840:')
+
+  delfunc Complete
+  set completeopt& completefunc&
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab nofoldenable
diff --git a/src/testdir/test_let.vim b/src/testdir/test_let.vim
index c99207c..2aba1d3 100644
--- a/src/testdir/test_let.vim
+++ b/src/testdir/test_let.vim
@@ -396,6 +396,45 @@ func Test_let_heredoc_fails()
     call assert_report('Caught exception: ' .. v:exception)
   endtry
 
+  try
+    let @- =<< trim TEXT
+      change
+      insert
+      append
+    TEXT
+    call assert_report('No exception thrown')
+  catch /E730:/
+  catch
+    call assert_report('Caught exception: ' .. v:exception)
+  endtry
+
+  try
+    let [] =<< trim TEXT
+    TEXT
+    call assert_report('No exception thrown')
+  catch /E475:/
+  catch
+    call assert_report('Caught exception: ' .. v:exception)
+  endtry
+
+  try
+    let [a b c] =<< trim TEXT
+    TEXT
+    call assert_report('No exception thrown')
+  catch /E475:/
+  catch
+    call assert_report('Caught exception: ' .. v:exception)
+  endtry
+
+  try
+    let [a; b; c] =<< trim TEXT
+    TEXT
+    call assert_report('No exception thrown')
+  catch /E452:/
+  catch
+    call assert_report('Caught exception: ' .. v:exception)
+  endtry
+
   let text =<< trim END
   func WrongSyntax()
     let v =<< that there
@@ -497,6 +536,13 @@ END
   XX
   call assert_equal(['Line1'], var1)
 
+  let var1 =<< trim XX " comment
+    Line1
+      Line2
+    Line3
+  XX
+  call assert_equal(['Line1', '  Line2', 'Line3'], var1)
+
   " ignore "endfunc"
   let var1 =<< END
 something
@@ -571,6 +617,22 @@ append
 END
   call assert_equal(['change', 'insert', 'append'], [a, b, c])
 
+  " unpack assignment with semicolon
+  let [a; b] =<< END
+change
+insert
+append
+END
+  call assert_equal(['change', ['insert', 'append']], [a, b])
+
+  " unpack assignment with registers
+  let [@/, @", @-] =<< END
+change
+insert
+append
+END
+  call assert_equal(['change', 'insert', 'append'], [@/, @", @-])
+
   " curly braces name and list slice assignment
   let foo_3_bar = ['', '', '']
   let foo_{1 + 2}_bar[ : ] =<< END
@@ -627,6 +689,48 @@ END
   END
   call assert_equal(['let a = {abc}', 'let b = X', 'let c = {'], code)
 
+  " Evaluate a dictionary
+  let d1 = #{a: 10, b: 'ss', c: {}}
+  let code =<< eval trim END
+    let d2 = {d1}
+  END
+  call assert_equal(["let d2 = {'a': 10, 'b': 'ss', 'c': {}}"], code)
+
+  " Empty dictionary
+  let d1 = {}
+  let code =<< eval trim END
+    let d2 = {d1}
+  END
+  call assert_equal(["let d2 = {}"], code)
+
+  " null dictionary
+  let d1 = test_null_dict()
+  let code =<< eval trim END
+    let d2 = {d1}
+  END
+  call assert_equal(["let d2 = {}"], code)
+
+  " Evaluate a List
+  let l1 = ['a', 'b', 'c']
+  let code =<< eval trim END
+    let l2 = {l1}
+  END
+  call assert_equal(["let l2 = ['a', 'b', 'c']"], code)
+
+  " Empty List
+  let l1 = []
+  let code =<< eval trim END
+    let l2 = {l1}
+  END
+  call assert_equal(["let l2 = []"], code)
+
+  " Null List
+  let l1 = test_null_list()
+  let code =<< eval trim END
+    let l2 = {l1}
+  END
+  call assert_equal(["let l2 = []"], code)
+
   let code = 'xxx'
   let code =<< eval trim END
     let n = {5 +
@@ -660,6 +764,34 @@ END
   LINES
   call v9.CheckScriptFailure(lines, 'E15:')
 
+  " Test for using heredoc in a single string using :execute or execute()
+  for [cmd, res] in items({
+      \ "let x =<< trim END\n  one\n  two\nEND": ['one', 'two'],
+      \ "let x =<< trim END\n  one\n    two\nEND": ['one', '  two'],
+      \ "  let x =<< trim END\n    one\n    two\n  END": ['one', 'two'],
+      \ "  let x =<< trim END\n    one\n      two\n  END": ['one', '  two'],
+      \ "let x =<< END\n  one\n  two\nEND": ['  one', '  two'],
+      \ "let x =<< END\none\ntwo\nEND": ['one', 'two'],
+      \ "let x =<< END \" comment\none\ntwo\nEND": ['one', 'two'],
+      \ })
+    execute cmd
+    call assert_equal(res, x)
+    unlet x
+    call assert_equal($"\n{string(res)}", execute($"{cmd}\necho x"))
+    unlet x
+  endfor
+  for [cmd, err] in items({
+      \ "let x =<<\none\ntwo": "E172:",
+      \ "let x =<< trim\n  one\n  two": "E172:",
+      \ "let x =<< end\none\ntwo\nend": "E221:",
+      \ "let x =<< END\none\ntwo": "E990: Missing end marker 'END'",
+      \ "let x =<< END !\none\ntwo\nEND": "E488: Trailing characters:  !",
+      \ "let x =<< eval END\none\ntwo{y}\nEND": "E121: Undefined variable: y",
+      \ })
+    call assert_fails('execute cmd', err)
+    call assert_fails('call execute(cmd)', err)
+  endfor
+
   " skipped heredoc
   if 0
     let msg =<< trim eval END
diff --git a/src/testdir/test_listdict.vim b/src/testdir/test_listdict.vim
index 8b2c27a..4c69476 100644
--- a/src/testdir/test_listdict.vim
+++ b/src/testdir/test_listdict.vim
@@ -1530,4 +1530,10 @@ func Test_indexof()
   delfunc TestIdx
 endfunc
 
+func Test_extendnew_leak()
+  " This used to leak memory
+  for i in range(100) | silent! call extendnew([], [], []) | endfor
+  for i in range(100) | silent! call extendnew({}, {}, {}) | endfor
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_mapping.vim b/src/testdir/test_mapping.vim
index 71d9046..1175310 100644
--- a/src/testdir/test_mapping.vim
+++ b/src/testdir/test_mapping.vim
@@ -248,21 +248,25 @@ func Test_map_meta_multibyte()
 endfunc
 
 func Test_map_super_quotes()
-  if has('gui_gtk') || has('gui_gtk3') || has("macos")
-    imap <D-"> foo
-    call feedkeys("Go-\<*D-\">-\<Esc>", "xt")
-    call assert_equal("-foo-", getline('$'))
-    set nomodified
-    iunmap <D-">
+  if "\<D-j>"[-1:] == '>'
+    throw 'Skipped: <D- modifier not supported'
   endif
+
+  imap <D-"> foo
+  call feedkeys("Go-\<*D-\">-\<Esc>", "xt")
+  call assert_equal("-foo-", getline('$'))
+  set nomodified
+  iunmap <D-">
 endfunc
 
 func Test_map_super_multibyte()
-  if has('gui_gtk') || has('gui_gtk3') || has("macos")
-    imap <D-á> foo
-    call assert_match('i  <D-á>\s*foo', execute('imap'))
-    iunmap <D-á>
+  if "\<D-j>"[-1:] == '>'
+    throw 'Skipped: <D- modifier not supported'
   endif
+
+  imap <D-á> foo
+  call assert_match('i  <D-á>\s*foo', execute('imap'))
+  iunmap <D-á>
 endfunc
 
 func Test_abbr_after_line_join()
@@ -1807,6 +1811,49 @@ func Test_map_after_timed_out_nop()
   call StopVimInTerminal(buf)
 endfunc
 
+" Test 'showcmd' behavior with a partial mapping
+func Test_showcmd_part_map()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+    set notimeout showcmd
+    nnoremap ,a <Ignore>
+    nnoremap ;a <Ignore>
+    nnoremap Àa <Ignore>
+    nnoremap Ëa <Ignore>
+    nnoremap βa <Ignore>
+    nnoremap ωa <Ignore>
+    nnoremap …a <Ignore>
+    nnoremap <C-W>a <Ignore>
+  END
+  call writefile(lines, 'Xtest_showcmd_part_map', 'D')
+  let buf = RunVimInTerminal('-S Xtest_showcmd_part_map', #{rows: 6})
+
+  call term_sendkeys(buf, ":set noruler | echo\<CR>")
+  call WaitForAssert({-> assert_equal('', term_getline(buf, 6))})
+
+  for c in [',', ';', 'À', 'Ë', 'β', 'ω', '…']
+    call term_sendkeys(buf, c)
+    call WaitForAssert({-> assert_equal(c, trim(term_getline(buf, 6)))})
+    call term_sendkeys(buf, 'a')
+    call WaitForAssert({-> assert_equal('', trim(term_getline(buf, 6)))})
+  endfor
+
+  call term_sendkeys(buf, "\<C-W>")
+  call WaitForAssert({-> assert_equal('^W', trim(term_getline(buf, 6)))})
+  call term_sendkeys(buf, 'a')
+  call WaitForAssert({-> assert_equal('', trim(term_getline(buf, 6)))})
+
+  " Use feedkeys() as terminal buffer cannot forward unsimplified Ctrl-W.
+  " This is like typing Ctrl-W with modifyOtherKeys enabled.
+  call term_sendkeys(buf, ':call feedkeys("\<*C-W>", "m")' .. " | echo\<CR>")
+  call WaitForAssert({-> assert_equal('^W', trim(term_getline(buf, 6)))})
+  call term_sendkeys(buf, 'a')
+  call WaitForAssert({-> assert_equal('', trim(term_getline(buf, 6)))})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 func Test_using_past_typeahead()
   nnoremap :00 0
   exe "norm :set \x80\xfb0=0\<CR>"
diff --git a/src/testdir/test_match.vim b/src/testdir/test_match.vim
index 1896158..eb77791 100644
--- a/src/testdir/test_match.vim
+++ b/src/testdir/test_match.vim
@@ -307,6 +307,7 @@ func Test_matchaddpos_error()
   " Why doesn't the following error have an error code E...?
   call assert_fails("call matchaddpos('Error', [{}])", 'E290:')
   call assert_equal(-1, matchaddpos('Error', test_null_list()))
+  call assert_equal(-1, matchaddpos('Error', []))
   call assert_fails("call matchaddpos('Error', [1], [], 1)", 'E745:')
   call assert_equal(-1, matchaddpos('Search', [[]]))
   call assert_fails("call matchaddpos('Search', [[{}]])", 'E728:')
@@ -433,5 +434,4 @@ func Test_match_tab_with_linebreak()
   call StopVimInTerminal(buf)
 endfunc
 
-
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_mksession.vim b/src/testdir/test_mksession.vim
index 78d301f..914d1e3 100644
--- a/src/testdir/test_mksession.vim
+++ b/src/testdir/test_mksession.vim
@@ -708,11 +708,11 @@ endfunc
 
 func Test_mkview_no_file_name()
   new
-  " :mkview or :mkview {nr} should fail in a unnamed buffer.
+  " :mkview or :mkview {nr} should fail in an unnamed buffer.
   call assert_fails('mkview', 'E32:')
   call assert_fails('mkview 1', 'E32:')
 
-  " :mkview {file} should succeed in a unnamed buffer.
+  " :mkview {file} should succeed in an unnamed buffer.
   mkview Xview
   help
   source Xview
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index b180637..4b7e5e6 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -130,7 +130,7 @@ func Test_normal01_keymodel()
   call assert_equal([0, 1, 1, 0], getpos("'<"))
   call assert_equal([0, 3, 1, 0], getpos("'>"))
   call feedkeys("Gz\<CR>8|\<S-PageUp>y", 'xt')
-  call assert_equal([0, 2, 1, 0], getpos("'<"))
+  call assert_equal([0, 3, 1, 0], getpos("'<"))
   call assert_equal([0, 3, 8, 0], getpos("'>"))
   " Test for <S-C-Home> and <S-C-End>
   call cursor(2, 12)
@@ -912,12 +912,10 @@ func Test_normal14_page()
   set scrolloff=0
   100
   exe "norm! $\<c-b>"
-  call assert_equal('92', getline('.'))
   call assert_equal([0, 92, 1, 0, 1], getcurpos())
   100
   set nostartofline
   exe "norm! $\<c-b>"
-  call assert_equal('92', getline('.'))
   call assert_equal([0, 92, 2, 0, v:maxcol], getcurpos())
   " cleanup
   set startofline
@@ -1284,7 +1282,7 @@ func Test_vert_scroll_cmds()
   exe "normal \<C-U>"
   call assert_equal(36, line('.'))
   exe "normal \<C-U>"
-  call assert_equal(10, line('.'))
+  call assert_equal(1, line('.'))
   exe "normal \<C-U>"
   call assert_equal(1, line('.'))
   set scroll&
@@ -3815,8 +3813,8 @@ func Test_normal_vert_scroll_longline()
   call assert_equal(11, line('.'))
   call assert_equal(1, winline())
   exe "normal \<C-B>"
-  call assert_equal(10, line('.'))
-  call assert_equal(3, winline())
+  call assert_equal(11, line('.'))
+  call assert_equal(5, winline())
   exe "normal \<C-B>\<C-B>"
   call assert_equal(5, line('.'))
   call assert_equal(5, winline())
@@ -4174,12 +4172,8 @@ endfunc
 
 " Test for { and } paragraph movements in a single line
 func Test_brace_single_line()
-  let text =<< trim [DATA]
-    foobar one two three
-  [DATA]
-
   new
-  call setline(1, text)
+  call setline(1, ['foobar one two three'])
   1
   norm! 0}
 
@@ -4189,4 +4183,81 @@ func Test_brace_single_line()
   bw!
 endfunc
 
+" Test for Ctrl-B/Ctrl-U in buffer with a single line
+func Test_single_line_scroll()
+  CheckFeature textprop
+
+  new
+  call setline(1, ['foobar one two three'])
+  let vt = 'virt_above'
+  call prop_type_add(vt, {'highlight': 'IncSearch'})
+  call prop_add(1, 0, {'type': vt, 'text': '---', 'text_align': 'above'})
+  call cursor(1, 1)
+
+  " Ctrl-B/Ctrl-U scroll up with hidden "above" virtual text.
+  set smoothscroll
+  exe "normal \<C-E>"
+  call assert_notequal(0, winsaveview().skipcol)
+  exe "normal \<C-B>"
+  call assert_equal(0, winsaveview().skipcol)
+  exe "normal \<C-E>"
+  call assert_notequal(0, winsaveview().skipcol)
+  exe "normal \<C-U>"
+  call assert_equal(0, winsaveview().skipcol)
+
+  set smoothscroll&
+  bw!
+  call prop_type_delete(vt)
+endfunc
+
+" Test for zb in buffer with a single line and filler lines
+func Test_single_line_filler_zb()
+  call setline(1, ['', 'foobar one two three'])
+  diffthis
+  new
+  call setline(1, ['foobar one two three'])
+  diffthis
+
+  " zb scrolls to reveal filler lines at the start of the buffer.
+  exe "normal \<C-E>zb"
+  call assert_equal(1, winsaveview().topfill)
+
+  bw!
+endfunc
+
+" Test for Ctrl-U not getting stuck at end of buffer with 'scrolloff'.
+func Test_halfpage_scrolloff_eob()
+  set scrolloff=5
+
+  call setline(1, range(1, 100))
+  exe "norm! Gzz\<C-U>zz"
+  call assert_notequal(100, line('.'))
+
+  set scrolloff&
+  bwipe!
+endfunc
+
+" Test for Ctrl-U/D moving the cursor at the buffer boundaries.
+func Test_halfpage_cursor_startend()
+  call setline(1, range(1, 100))
+  exe "norm! jztj\<C-U>"
+  call assert_equal(1, line('.'))
+  exe "norm! G\<C-Y>k\<C-D>"
+  call assert_equal(100, line('.'))
+  bwipe!
+endfunc
+
+" Test for Ctrl-F/B moving the cursor to the window boundaries.
+func Test_page_cursor_topbot()
+  10new
+  call setline(1, range(1, 100))
+  exe "norm! gg2\<C-F>"
+  call assert_equal(17, line('.'))
+  exe "norm! \<C-B>"
+  call assert_equal(18, line('.'))
+  exe "norm! \<C-B>\<C-F>"
+  call assert_equal(9, line('.'))
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab nofoldenable
diff --git a/src/testdir/test_put.vim b/src/testdir/test_put.vim
index 5b5c354..69c2943 100644
--- a/src/testdir/test_put.vim
+++ b/src/testdir/test_put.vim
@@ -319,4 +319,21 @@ func Test_put_visual_replace_fold_marker()
   bwipe!
 endfunc
 
+func Test_put_dict()
+  new
+  let d = #{a: #{b: 'abc'}, c: [1, 2], d: 0z10}
+  put! =d
+  call assert_equal(["{'a': {'b': 'abc'}, 'c': [1, 2], 'd': 0z10}", ''],
+        \ getline(1, '$'))
+  bw!
+endfunc
+
+func Test_put_list()
+  new
+  let l = ['a', 'b', 'c']
+  put! =l
+  call assert_equal(['a', 'b', 'c', ''], getline(1, '$'))
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_recover.vim b/src/testdir/test_recover.vim
index a084ef4..e85b2e9 100644
--- a/src/testdir/test_recover.vim
+++ b/src/testdir/test_recover.vim
@@ -380,7 +380,7 @@ func Test_recover_encrypted_swap_file()
   call delete('Xfile1')
 endfunc
 
-" Test for :recover using a unreadable swap file
+" Test for :recover using an unreadable swap file
 func Test_recover_unreadable_swap_file()
   CheckUnix
   CheckNotRoot
diff --git a/src/testdir/test_regexp_latin.vim b/src/testdir/test_regexp_latin.vim
index 9acb12b..63f093a 100644
--- a/src/testdir/test_regexp_latin.vim
+++ b/src/testdir/test_regexp_latin.vim
@@ -874,12 +874,26 @@ func Regex_Mark()
   %d
 endfunc
 
+" Same test as above, but use verymagic
+func Regex_Mark_Verymagic()
+  call append(0, ['', '', '', 'Marks:', 'asdfSasdfsadfEasdf', 'asdfSas',
+        \ 'dfsadfEasdf', '', '', '', '', ''])
+  call cursor(4, 1)
+  exe "normal jfSmsfEme:.-4,.+6s/\\v.%>'s.*%<'e../here/\<CR>"
+  exe "normal jfSmsj0fEme:.-4,.+6s/\\v.%>'s\\_.*%<'e../again/\<CR>"
+  call assert_equal(['', '', '', 'Marks:', 'asdfhereasdf', 'asdfagainasdf',
+        \ '', '', '', '', '', ''], getline(1, '$'))
+  %d
+endfunc
+
 func Test_matching_marks()
   new
   set regexpengine=1
   call Regex_Mark()
+  call Regex_Mark_Verymagic()
   set regexpengine=2
   call Regex_Mark()
+  call Regex_Mark_Verymagic()
   bwipe!
 endfunc
 
diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
index 6669dee..bc70544 100644
--- a/src/testdir/test_regexp_utf8.vim
+++ b/src/testdir/test_regexp_utf8.vim
@@ -342,7 +342,7 @@ func Test_multibyte_chars()
 endfunc
 
 " check that 'ambiwidth' does not change the meaning of \p
-func Test_ambiwidth()
+func Test_regexp_ambiwidth()
   set regexpengine=1 ambiwidth=single
   call assert_equal(0, match("\u00EC", '\p'))
   set regexpengine=1 ambiwidth=double
diff --git a/src/testdir/test_registers.vim b/src/testdir/test_registers.vim
index cb4cee7..b2261d4 100644
--- a/src/testdir/test_registers.vim
+++ b/src/testdir/test_registers.vim
@@ -209,6 +209,71 @@ func Test_recording_with_select_mode()
   bwipe!
 endfunc
 
+func Run_test_recording_with_select_mode_utf8()
+  new
+
+  " Test with different text lengths: 5, 7, 9, 11, 13, 15, to check that
+  " a character isn't split between two buffer blocks.
+  for s in ['12345', '口=口', '口口口', '口=口=口', '口口=口口', '口口口口口']
+    " 0x80 is K_SPECIAL
+    " 0x9B is CSI
+    " 哦: 0xE5 0x93 0xA6
+    " 洛: 0xE6 0xB4 0x9B
+    " 固: 0xE5 0x9B 0xBA
+    " 四: 0xE5 0x9B 0x9B
+    " 最: 0xE6 0x9C 0x80
+    " 倒: 0xE5 0x80 0x92
+    " 倀: 0xE5 0x80 0x80
+    for c in ['哦', '洛', '固', '四', '最', '倒', '倀']
+      call setline(1, 'asdf')
+      call feedkeys($"qacc{s}\<Esc>gH{c}\<Esc>q", "tx")
+      call assert_equal(c, getline(1))
+      call assert_equal($"cc{s}\<Esc>gH{c}\<Esc>", @a)
+      call setline(1, 'asdf')
+      normal! @a
+      call assert_equal(c, getline(1))
+
+      " Test with Shift modifier.
+      let shift_c = eval($'"\<S-{c}>"')
+      call setline(1, 'asdf')
+      call feedkeys($"qacc{s}\<Esc>gH{shift_c}\<Esc>q", "tx")
+      call assert_equal(c, getline(1))
+      call assert_equal($"cc{s}\<Esc>gH{shift_c}\<Esc>", @a)
+      call setline(1, 'asdf')
+      normal! @a
+      call assert_equal(c, getline(1))
+    endfor
+  endfor
+
+  bwipe!
+endfunc
+
+func Test_recording_with_select_mode_utf8()
+  call Run_test_recording_with_select_mode_utf8()
+endfunc
+
+" This must be done as one of the last tests, because it starts the GUI, which
+" cannot be undone.
+func Test_zz_recording_with_select_mode_utf8_gui()
+  CheckCanRunGui
+
+  gui -f
+  call Run_test_recording_with_select_mode_utf8()
+endfunc
+
+func Test_recording_with_super_mod()
+  if "\<D-j>"[-1:] == '>'
+    throw 'Skipped: <D- modifier not supported'
+  endif
+
+  nnoremap <D-j> <Ignore>
+  let s = repeat("\<D-j>", 1000)
+  " This used to crash Vim
+  call feedkeys($'qr{s}q', 'tx')
+  call assert_equal(s, @r)
+  nunmap <D-j>
+endfunc
+
 " Test for executing the last used register (@)
 func Test_last_used_exec_reg()
   " Test for the @: command
@@ -745,13 +810,13 @@ func Test_ve_blockpaste()
   call cursor(1,1)
   exe ":norm! \<C-V>3ljdP"
   call assert_equal(1, col('.'))
-  call assert_equal(getline(1, 2), ['QWERTZ', 'ASDFGH'])
+  call assert_equal(['QWERTZ', 'ASDFGH'], getline(1, 2))
   call cursor(1,1)
   exe ":norm! \<C-V>3ljd"
   call cursor(1,1)
   norm! $3lP
   call assert_equal(5, col('.'))
-  call assert_equal(getline(1, 2), ['TZ  QWER', 'GH  ASDF'])
+  call assert_equal(['TZ  QWER', 'GH  ASDF'], getline(1, 2))
   set ve&vim
   bwipe!
 endfunc
diff --git a/src/testdir/test_remote.vim b/src/testdir/test_remote.vim
index ae931fd..1475052 100644
--- a/src/testdir/test_remote.vim
+++ b/src/testdir/test_remote.vim
@@ -76,4 +76,49 @@ func Test_remote_servername()
   close
 endfunc
 
+func Test_remote_servername_shellslash()
+  " Note this test does not currently run on Windows
+  " because:
+  " 1) we cannot run the gui version of Vim inside a terminal
+  " 2) Running Windows vim.exe inside a terminal would work, but is
+  "    disabled because of the limited colors inside the default Windows
+  "    console (see CanRunVimInTerminal in term_util.vim)
+  CheckRunVimInTerminal
+  CheckMSWindows
+
+  " That is the file we want the server to open,
+  " despite the wildignore setting
+  call mkdir(expand('~/remote/'), 'pD')
+  call writefile(range(1, 20), expand('~/remote/XTEST.txt'), 'D')
+  " just a dummy file, so that the ':wq' further down is successful
+  call writefile(range(1, 20), 'Xdummy.log', 'D')
+
+  " Run Vim in a terminal and open a terminal window to run Vim in.
+  let lines =<< trim END
+    set shellslash
+    cd ~/remote
+  END
+  call writefile(lines, 'XRemoteEditing1.vim', 'D')
+  let buf = RunVimInTerminal('--servername XVIMTEST -S XRemoteEditing1.vim  Xdummy.log', {'rows': 10})
+  call TermWait(buf)
+
+  " wildignore setting should be ignored and the XVIMTEST server should now
+  " open XTEST.txt, if wildignore setting is not ignored, the server
+  " will continue with the Xdummy.log file
+  let buf2 = RunVimInTerminal('--servername XVIMTEST --remote-silent ~/remote/XTEST.txt', {'rows': 5, 'wait_for_ruler': 0})
+  " job should be no-longer running, so we can just close it
+  exe buf2 .. 'bw!'
+
+  call term_sendkeys(buf, ":pwd\<CR>")
+  call WaitForAssert({-> assert_match('remote/$', term_getline(buf, 10))}, 1000)
+  call TermWait(buf)
+  call term_sendkeys(buf, ":q!\<CR>")
+  call TermWait(buf)
+  if term_getstatus(buf) == 'running'
+    call StopVimInTerminal(buf)
+  endif
+  bw!
+  close
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_scroll_opt.vim b/src/testdir/test_scroll_opt.vim
index 3467760..cda9bf0 100644
--- a/src/testdir/test_scroll_opt.vim
+++ b/src/testdir/test_scroll_opt.vim
@@ -552,11 +552,11 @@ func Test_smoothscroll_cursor_position()
   " Test "g0/g<Home>"
   exe "normal gg\<C-E>"
   norm $gkg0
-  call s:check_col_calc(1, 2, 21)
+  call s:check_col_calc(4, 1, 24)
 
   " Test moving the cursor behind the <<< display with 'virtualedit'
   set virtualedit=all
-  exe "normal \<C-E>3lgkh"
+  exe "normal \<C-E>gkh"
   call s:check_col_calc(3, 2, 23)
   set virtualedit&
 
@@ -738,6 +738,7 @@ func Test_smoothscroll_mouse_pos()
   let &mouse = save_mouse
   let &term = save_term
   let &ttymouse = save_ttymouse
+  bwipe!
 endfunc
 
 " this was dividing by zero
@@ -829,7 +830,7 @@ func Test_smoothscroll_eob()
   call VerifyScreenDump(buf, 'Test_smooth_eob_1', {})
 
   " cursor is not placed below window
-  call term_sendkeys(buf, ":call setline(92, 'a'->repeat(100))\<CR>\<C-B>G")
+  call term_sendkeys(buf, ":call setline(92, 'a'->repeat(100))\<CR>\<C-L>\<C-B>G")
   call VerifyScreenDump(buf, 'Test_smooth_eob_2', {})
 
   call StopVimInTerminal(buf)
@@ -998,4 +999,113 @@ func Test_smoothscroll_textoff_small_winwidth()
   set smoothscroll& number&
 endfunc
 
+func Test_smoothscroll_page()
+  call NewWindow(10, 40)
+  setlocal smoothscroll
+  call setline(1, 'abcde '->repeat(150))
+
+  exe "norm! \<C-F>"
+  call assert_equal(400, winsaveview().skipcol)
+  exe "norm! \<C-F>"
+  call assert_equal(800, winsaveview().skipcol)
+  exe "norm! \<C-F>"
+  call assert_equal(880, winsaveview().skipcol)
+  exe "norm! \<C-B>"
+  call assert_equal(480, winsaveview().skipcol)
+  exe "norm! \<C-B>"
+  call assert_equal(80, winsaveview().skipcol)
+  exe "norm! \<C-B>"
+  call assert_equal(0, winsaveview().skipcol)
+
+  " Half-page scrolling does not go beyond end of buffer and moves the cursor.
+  " Even with 'nostartofline', the correct amount of lines is scrolled.
+  setl nostartofline
+  exe "norm! 15|\<C-D>"
+  call assert_equal(200, winsaveview().skipcol)
+  call assert_equal(215, col('.'))
+  exe "norm! \<C-D>"
+  call assert_equal(400, winsaveview().skipcol)
+  call assert_equal(415, col('.'))
+  exe "norm! \<C-D>"
+  call assert_equal(520, winsaveview().skipcol)
+  call assert_equal(615, col('.'))
+  exe "norm! \<C-D>"
+  call assert_equal(520, winsaveview().skipcol)
+  call assert_equal(815, col('.'))
+  exe "norm! \<C-D>"
+  call assert_equal(520, winsaveview().skipcol)
+  call assert_equal(895, col('.'))
+  exe "norm! \<C-U>"
+  call assert_equal(320, winsaveview().skipcol)
+  call assert_equal(695, col('.'))
+  exe "norm! \<C-U>"
+  call assert_equal(120, winsaveview().skipcol)
+  call assert_equal(495, col('.'))
+  exe "norm! \<C-U>"
+  call assert_equal(0, winsaveview().skipcol)
+  call assert_equal(295, col('.'))
+  exe "norm! \<C-U>"
+  call assert_equal(0, winsaveview().skipcol)
+  call assert_equal(95, col('.'))
+  exe "norm! \<C-U>"
+  call assert_equal(0, winsaveview().skipcol)
+  call assert_equal(15, col('.'))
+
+  bwipe!
+endfunc
+
+func Test_smoothscroll_next_topline()
+  call NewWindow(10, 40)
+  setlocal smoothscroll
+  call setline(1, ['abcde '->repeat(150)]->repeat(2))
+
+  " Scrolling a screenline that causes the cursor to move to the next buffer
+  " line should not skip part of that line to bring the cursor into view.
+  exe "norm! 22\<C-E>"
+  call assert_equal(880, winsaveview().skipcol)
+  exe "norm! \<C-E>"
+  redraw
+  call assert_equal(0, winsaveview().skipcol)
+
+  " Also when scrolling back.
+  exe "norm! G\<C-Y>"
+  redraw
+  call assert_equal(880, winsaveview().skipcol)
+
+  " Cursor in correct place when not in the first screenline of a buffer line.
+  exe "norm! gg4gj20\<C-D>\<C-D>"
+  redraw
+  call assert_equal(2, line('w0'))
+
+  " Cursor does not end up above topline, adjusting topline later.
+  setlocal nu cpo+=n
+  exe "norm! G$g013\<C-Y>"
+  redraw
+  call assert_equal(2, line('.'))
+  call assert_equal(0, winsaveview().skipcol)
+
+  set cpo-=n
+  bwipe!
+endfunc
+
+func Test_smoothscroll_long_line_zb()
+  call NewWindow(10, 40)
+  call setline(1, 'abcde '->repeat(150))
+
+  " Also works without 'smoothscroll' when last line of buffer doesn't fit.
+  " Used to set topline to buffer line count plus one, causing an empty screen.
+  norm zb
+  redraw
+  call assert_equal(1, winsaveview().topline)
+
+  " Moving cursor to bottom works on line that doesn't fit with 'smoothscroll'.
+  " Skipcol was adjusted later for cursor being on not visible part of line.
+  setlocal smoothscroll
+  norm zb
+  redraw
+  call assert_equal(520, winsaveview().skipcol)
+
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_sound.vim b/src/testdir/test_sound.vim
index e97ac61..401753e 100644
--- a/src/testdir/test_sound.vim
+++ b/src/testdir/test_sound.vim
@@ -15,6 +15,7 @@ func Test_play_event()
   if has('win32')
     throw 'Skipped: Playing event with callback is not supported on Windows'
   endif
+  let g:result = 0
   let g:playcallback_count = 0
   let g:id = 0
   let event_name = 'bell'
@@ -37,6 +38,7 @@ endfunc
 func Test_play_silent()
   let fname = fnamemodify('silent.wav', '%p')
   let g:playcallback_count = 0
+  let g:result = -1
 
   " play without callback
   let id1 = sound_playfile(fname)
diff --git a/src/testdir/test_tabpage.vim b/src/testdir/test_tabpage.vim
index a531f19..3624790 100644
--- a/src/testdir/test_tabpage.vim
+++ b/src/testdir/test_tabpage.vim
@@ -117,10 +117,16 @@ function Test_tabpage()
   call assert_equal(3, tabpagenr())
   +3tabmove
   call assert_equal(6, tabpagenr())
+  silent -tabmove
+  call assert_equal(5, tabpagenr())
+  silent -2 tabmove
+  call assert_equal(3, tabpagenr())
+  silent	-2	tabmove
+  call assert_equal(1, tabpagenr())
 
-  " The following are a no-op
   norm! 2gt
   call assert_equal(2, tabpagenr())
+  " The following are a no-op
   tabmove 2
   call assert_equal(2, tabpagenr())
   2tabmove
diff --git a/src/testdir/test_taglist.vim b/src/testdir/test_taglist.vim
index 39e78bc..2dd2366 100644
--- a/src/testdir/test_taglist.vim
+++ b/src/testdir/test_taglist.vim
@@ -100,7 +100,10 @@ func Test_tagfiles()
 
   help
   let tf = tagfiles()
-  call assert_equal(1, len(tf))
+  " if 'helplang includes another language, then we may find
+  " 2 tagfiles (e.g.: for EN and RU)
+  " we may need to adjust this, if further translated help files are included
+  call assert_inrange(1, 2, len(tf))
   call assert_equal(fnamemodify(expand('$VIMRUNTIME/doc/tags'), ':p:gs?\\?/?'),
 	\           fnamemodify(tf[0], ':p:gs?\\?/?'))
   helpclose
diff --git a/src/testdir/test_terminal3.vim b/src/testdir/test_terminal3.vim
index 96a9e63..223bcc5 100644
--- a/src/testdir/test_terminal3.vim
+++ b/src/testdir/test_terminal3.vim
@@ -931,5 +931,25 @@ func Test_terminal_term_start_error()
   delfunc s:term_start_error
 endfunc
 
+func Test_terminal_vt420()
+  CheckRunVimInTerminal
+  " For Termcap
+  CheckUnix
+  let rows=15
+  call writefile([':set term=vt420'], 'Xterm420', 'D')
+
+  let buf = RunVimInTerminal('-S Xterm420', #{rows: rows})
+  call TermWait(buf, 100)
+  call term_sendkeys(buf, ":set t_xo?\<CR>")
+  call WaitForAssert({-> assert_match('t_xo=y', term_getline(buf, rows))})
+  call StopVimInTerminal(buf)
+
+  call writefile([''], 'Xterm420')
+  let buf = RunVimInTerminal('-S Xterm420', #{rows: rows})
+  call TermWait(buf, 100)
+  call term_sendkeys(buf, ":set t_xo?\<CR>")
+  call WaitForAssert({-> assert_match('t_xo=\s\+', term_getline(buf, rows))})
+  call StopVimInTerminal(buf)
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_textformat.vim b/src/testdir/test_textformat.vim
index c5f5975..a9cffd0 100644
--- a/src/testdir/test_textformat.vim
+++ b/src/testdir/test_textformat.vim
@@ -1303,4 +1303,13 @@ func Test_correct_cursor_position()
   set encoding=utf8
 endfunc
 
+" This was crashing Vim
+func Test_textwdith_overflow()
+  new
+  setl tw=999999999
+  normal 10ig
+  call feedkeys('a ab cd ef', 'xt')
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index a06f733..2bf2834 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -2690,6 +2690,48 @@ func Test_prop_inserts_text_normal_gj_gk()
   call Run_test_prop_inserts_text_normal_gj_gk('set virtualedit=all')
 endfunc
 
+func Test_prop_normal_gj_gk_gM_with_outer_virtual_text()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+      vim9script
+      setlocal number
+      setline(1, ['First line fits on screen line.', '', 'Third line fits on screen line.'])
+
+      var vt = 'test'
+      prop_type_add(vt, {highlight: 'ToDo'})
+      for ln in range(1, line('$'))
+        prop_add(ln, 0, {type: vt, text: 'Above', text_align: 'above'})
+        prop_add(ln, 0, {type: vt, text: 'After text wraps to next line.', text_align: 'after', text_wrap: 'wrap'})
+        prop_add(ln, 0, {type: vt, text: 'Right text wraps to next line.', text_align: 'right', text_wrap: 'wrap'})
+        prop_add(ln, 0, {type: vt, text: 'Below', text_align: 'below'})
+      endfor
+      normal 3l
+  END
+  call writefile(lines, 'XscriptPropsNormal_gj_gk_gM_with_outer_text', 'D')
+  let buf = RunVimInTerminal('-S XscriptPropsNormal_gj_gk_gM_with_outer_text', #{rows: 16, cols: 40})
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1', {})
+
+  call term_sendkeys(buf, "gj")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_2', {})
+  call term_sendkeys(buf, "gj")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_3', {})
+  call term_sendkeys(buf, "gk")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_2', {})
+  call term_sendkeys(buf, "gk")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1', {})
+
+  call term_sendkeys(buf, "2gj")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_3', {})
+  call term_sendkeys(buf, "2gk")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_1', {})
+
+  call term_sendkeys(buf, "gM")
+  call VerifyScreenDump(buf, 'Test_prop_normal_gj_gk_gM_with_outer_virtual_text_4', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 func Test_prop_inserts_text_visual_block()
   CheckRunVimInTerminal
 
@@ -3026,6 +3068,43 @@ func Test_props_with_text_after_below_trunc()
   call StopVimInTerminal(buf)
 endfunc
 
+func Test_props_with_text_truncated_just_before_after()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+      vim9script
+      set showbreak=+++
+      set list listchars=extends:>
+      set nowrap
+
+      setline(1, [
+        'here is text long enough to fill the row',
+        'second line',
+      ])
+
+      prop_type_add("test", {"highlight": "Error"})
+      prop_add(1, 0, {type: "test", text_align: "right", text: "right text"})
+      def g:AddPropBelow()
+        prop_add(1, 0, {type: "test", text_align: "below", text: "below text"})
+      enddef
+      def g:AddPropAfter()
+        prop_add(1, 0, {type: "test", text: "after text", text_padding_left: 1})
+      enddef
+      normal G$
+  END
+  call writefile(lines, 'XscriptPropsWithTextTruncatedJustBeforeAfter', 'D')
+  let buf = RunVimInTerminal('-S XscriptPropsWithTextTruncatedJustBeforeAfter', #{rows: 8, cols: 40})
+  call VerifyScreenDump(buf, 'Test_props_with_text_truncated_just_before_after_1', {})
+
+  call term_sendkeys(buf, ":call AddPropBelow()\<CR>")
+  call VerifyScreenDump(buf, 'Test_props_with_text_truncated_just_before_after_2', {})
+
+  call term_sendkeys(buf, ":call AddPropAfter()\<CR>:\<Esc>")
+  call VerifyScreenDump(buf, 'Test_props_with_text_truncated_just_before_after_2', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 func Test_prop_with_text_below_after_empty()
   CheckRunVimInTerminal
 
diff --git a/src/testdir/test_utf8.vim b/src/testdir/test_utf8.vim
index 3bb7459..0f46240 100644
--- a/src/testdir/test_utf8.vim
+++ b/src/testdir/test_utf8.vim
@@ -62,6 +62,9 @@ func Test_customlist_completion()
   call assert_equal('"Test3 N', getreg(':'))
 
   call garbagecollect(1)
+  delcommand Test1
+  delcommand Test2
+  delcommand Test3
 endfunc
 
 " Yank one 3 byte character and check the mark columns.
@@ -170,6 +173,7 @@ func Test_screenchar_utf8()
 endfunc
 
 func Test_setcellwidths()
+  new
   call setcellwidths([
         \ [0x1330, 0x1330, 2],
         \ [9999, 10000, 1],
@@ -212,6 +216,18 @@ func Test_setcellwidths()
     " Ambiguous width chars
     call assert_equal(2, strwidth("\u00A1"))
     call assert_equal(2, strwidth("\u2010"))
+
+    call setcellwidths([])
+    call setline(1, repeat("\u2103", 10))
+    normal! $
+    redraw
+    call assert_equal((aw == 'single') ? 10 : 19, wincol())
+    call setcellwidths([[0x2103, 0x2103, 1]])
+    redraw
+    call assert_equal(10, wincol())
+    call setcellwidths([[0x2103, 0x2103, 2]])
+    redraw
+    call assert_equal(19, wincol())
   endfor
   set ambiwidth& isprint&
 
@@ -245,6 +261,7 @@ func Test_setcellwidths()
   set listchars&
   set fillchars&
   call setcellwidths([])
+  bwipe!
 endfunc
 
 func Test_getcellwidths()
@@ -283,64 +300,66 @@ func Test_setcellwidths_dump()
   call StopVimInTerminal(buf)
 endfunc
 
-func Test_print_overlong()
-  " Text with more composing characters than MB_MAXBYTES.
-  new
-  call setline(1, 'axxxxxxxxxxxxxxxxxxxxxxxxxxxxxx')
-  s/x/\=nr2char(1629)/g
-  print
-  bwipe!
-endfunc
+" Test setcellwidths() on characters that are not targets of 'ambiwidth'.
+func Test_setcellwidths_with_non_ambiwidth_character_dump()
+  CheckRunVimInTerminal
 
-func Test_recording_with_select_mode_utf8()
-  call Run_test_recording_with_select_mode_utf8()
+  let lines =<< trim END
+      call setline(1, [repeat("\u279c", 60), repeat("\u279c", 60)])
+      set ambiwidth=single
+  END
+  call writefile(lines, 'XCellwidthsWithNonAmbiwidthCharacter', 'D')
+  let buf = RunVimInTerminal('-S XCellwidthsWithNonAmbiwidthCharacter', {'rows': 6, 'cols': 50})
+  call term_sendkeys(buf, ":call setcellwidths([[0x279c, 0x279c, 1]])\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_setcellwidths_with_non_ambiwidth_character_dump_1', {})
+
+  call term_sendkeys(buf, ":call setcellwidths([[0x279c, 0x279c, 2]])\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_setcellwidths_with_non_ambiwidth_character_dump_2', {})
+
+  call StopVimInTerminal(buf)
 endfunc
 
-func Run_test_recording_with_select_mode_utf8()
-  new
+" For some reason this test causes Test_customlist_completion() to fail on CI,
+" so run it as the last test.
+func Test_zz_ambiwidth_hl_dump()
+  CheckRunVimInTerminal
 
-  " No escaping
-  call feedkeys("qacc12345\<Esc>gH哦\<Esc>q", "tx")
-  call assert_equal("哦", getline(1))
-  call assert_equal("cc12345\<Esc>gH哦\<Esc>", @a)
-  call setline(1, 'asdf')
-  normal! @a
-  call assert_equal("哦", getline(1))
-
-  " 固 is 0xE5 0x9B 0xBA where 0x9B is CSI
-  call feedkeys("qacc12345\<Esc>gH固\<Esc>q", "tx")
-  call assert_equal("固", getline(1))
-  call assert_equal("cc12345\<Esc>gH固\<Esc>", @a)
-  call setline(1, 'asdf')
-  normal! @a
-  call assert_equal("固", getline(1))
-
-  " 四 is 0xE5 0x9B 0x9B where 0x9B is CSI
-  call feedkeys("qacc12345\<Esc>gH四\<Esc>q", "tx")
-  call assert_equal("四", getline(1))
-  call assert_equal("cc12345\<Esc>gH四\<Esc>", @a)
-  call setline(1, 'asdf')
-  normal! @a
-  call assert_equal("四", getline(1))
-
-  " 倒 is 0xE5 0x80 0x92 where 0x80 is K_SPECIAL
-  call feedkeys("qacc12345\<Esc>gH倒\<Esc>q", "tx")
-  call assert_equal("倒", getline(1))
-  call assert_equal("cc12345\<Esc>gH倒\<Esc>", @a)
-  call setline(1, 'asdf')
-  normal! @a
-  call assert_equal("倒", getline(1))
+  let lines =<< trim END
+      call setline(1, [repeat("\u2103", 60), repeat("\u2103", 60)])
+      set ambiwidth=single cursorline list display=lastline
+  END
+  call writefile(lines, 'XAmbiwidthHl', 'D')
+  let buf = RunVimInTerminal('-S XAmbiwidthHl', {'rows': 6, 'cols': 50})
+  call VerifyScreenDump(buf, 'Test_ambiwidth_hl_dump_1', {})
 
-  bwipe!
-endfunc
+  call term_sendkeys(buf, ":set ambiwidth=double\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_ambiwidth_hl_dump_2', {})
+
+  call term_sendkeys(buf, ":set ambiwidth=single\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_ambiwidth_hl_dump_1', {})
+
+  call term_sendkeys(buf, ":call setcellwidths([[0x2103, 0x2103, 2]])\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_ambiwidth_hl_dump_2', {})
+
+  call term_sendkeys(buf, ":call setcellwidths([[0x2103, 0x2103, 1]])\<CR>")
+  call term_sendkeys(buf, ":echo\<CR>")
+  call VerifyScreenDump(buf, 'Test_ambiwidth_hl_dump_1', {})
 
-" This must be done as one of the last tests, because it starts the GUI, which
-" cannot be undone.
-func Test_zz_recording_with_select_mode_utf8_gui()
-  CheckCanRunGui
+  call StopVimInTerminal(buf)
+endfunc
 
-  gui -f
-  call Run_test_recording_with_select_mode_utf8()
+func Test_print_overlong()
+  " Text with more composing characters than MB_MAXBYTES.
+  new
+  call setline(1, 'axxxxxxxxxxxxxxxxxxxxxxxxxxxxxx')
+  s/x/\=nr2char(1629)/g
+  print
+  bwipe!
 endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 4414f55..4296c37 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1104,6 +1104,27 @@ def Test_assignment_partial()
       Ref(0)
   END
   v9.CheckScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected string but got number')
+
+  lines =<< trim END
+    var Fn1 = () => {
+        return 10
+      }
+    assert_equal('func(): number', typename(Fn1))
+    var Fn2 = () => {
+        return "a"
+      }
+    assert_equal('func(): string', typename(Fn2))
+    var Fn3 = () => {
+        return {a: [1]}
+      }
+    assert_equal('func(): dict<list<number>>', typename(Fn3))
+    var Fn4 = (...l: list<string>) => {
+        return []
+      }
+    assert_equal('func(...list<string>): list<any>', typename(Fn4))
+  END
+  v9.CheckSourceSuccess(['vim9script'] + lines)
+  v9.CheckSourceSuccess(['def Xfunc()'] + lines + ['enddef', 'defcompile'])
 enddef
 
 def Test_assignment_list_any_index()
@@ -1997,6 +2018,31 @@ def Test_heredoc()
   END
   v9.CheckScriptSuccess(lines)
 
+  # commented out heredoc assignment without space after '#'
+  lines =<< trim END
+      vim9script
+      def Func()
+        #x =<< trim [CODE]
+        #[CODE]
+      enddef
+      Func()
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # heredoc start should not be recognized in string
+  lines =<< trim END
+      vim9script
+      def Func()
+        new
+        @" = 'bar'
+        ['foo', @"]->setline("]=<<"->count('='))
+        assert_equal(['foo', 'bar'], getline(1, '$'))
+        bwipe!
+      enddef
+      Func()
+  END
+  v9.CheckScriptSuccess(lines)
+
   v9.CheckDefFailure(['var lines =<< trim END X', 'END'], 'E488:')
   v9.CheckDefFailure(['var lines =<< trim END " comment', 'END'], 'E488:')
 
@@ -2938,6 +2984,66 @@ def Test_heredoc_expr()
   CODE
   v9.CheckDefAndScriptSuccess(lines)
 
+  # Evaluate a dictionary
+  lines =<< trim CODE
+    var d1 = {'a': 10, 'b': [1, 2]}
+    var code =<< trim eval END
+      var d2 = {d1}
+    END
+    assert_equal(["var d2 = {'a': 10, 'b': [1, 2]}"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
+  # Evaluate an empty dictionary
+  lines =<< trim CODE
+    var d1 = {}
+    var code =<< trim eval END
+      var d2 = {d1}
+    END
+    assert_equal(["var d2 = {}"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
+  # Evaluate a null dictionary
+  lines =<< trim CODE
+    var d1 = test_null_dict()
+    var code =<< trim eval END
+      var d2 = {d1}
+    END
+    assert_equal(["var d2 = {}"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
+  # Evaluate a List
+  lines =<< trim CODE
+    var l1 = ['a', 'b', 'c']
+    var code =<< trim eval END
+      var l2 = {l1}
+    END
+    assert_equal(["var l2 = ['a', 'b', 'c']"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
+  # Evaluate an empty List
+  lines =<< trim CODE
+    var l1 = []
+    var code =<< trim eval END
+      var l2 = {l1}
+    END
+    assert_equal(["var l2 = []"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
+  # Evaluate a null List
+  lines =<< trim CODE
+    var l1 = test_null_list()
+    var code =<< trim eval END
+      var l2 = {l1}
+    END
+    assert_equal(["var l2 = []"], code)
+  CODE
+  v9.CheckDefAndScriptSuccess(lines)
+
   lines =<< trim CODE
     var code =<< eval trim END
       var s = "{$SOME_ENV_VAR}"
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 442d375..42d09fe 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -66,16 +66,16 @@ def Test_abs()
   assert_equal(0, abs(0))
   assert_equal(2, abs(-2))
   assert_equal(3, abs(3))
-  v9.CheckDefAndScriptFailure(['abs("text")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['abs("text")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal(0, abs(0))
   assert_equal(2.0, abs(-2.0))
   assert_equal(3.0, abs(3.0))
 enddef
 
 def Test_add()
-  v9.CheckDefAndScriptFailure(['add({}, 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1226: List or Blob required for argument 1'])
-  v9.CheckDefAndScriptFailure(['add([])'], 'E119:')
-  v9.CheckDefExecFailure([
+  v9.CheckSourceDefAndScriptFailure(['add({}, 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1226: List or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['add([])'], 'E119:')
+  v9.CheckSourceDefExecFailure([
         'var ln: list<number> = [1]',
         'add(ln, "a")'],
         'E1012: Type mismatch; expected number but got string')
@@ -91,7 +91,7 @@ def Test_add()
     enddef
     TryChange()
   END
-  v9.CheckScriptFailure(lines, 'E741:')
+  v9.CheckSourceScriptFailure(lines, 'E741:')
 enddef
 
 def Test_add_blob()
@@ -107,18 +107,18 @@ def Test_add_blob()
       var b: blob
       add(b, "x")
   END
-  v9.CheckDefFailure(lines, 'E1012:', 2)
+  v9.CheckSourceDefFailure(lines, 'E1012:', 2)
 
   lines =<< trim END
       add(test_null_blob(), 123)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1131:', 1)
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1131:', 1)
 
   lines =<< trim END
       var b: blob = test_null_blob()
       add(b, 123)
   END
-  v9.CheckDefExecFailure(lines, 'E1131:', 2)
+  v9.CheckSourceDefExecFailure(lines, 'E1131:', 2)
 
   # Getting variable with NULL blob fails
   lines =<< trim END
@@ -126,7 +126,7 @@ def Test_add_blob()
       var b: blob = test_null_blob()
       add(b, 123)
   END
-  v9.CheckScriptFailure(lines, 'E1131:', 3)
+  v9.CheckSourceScriptFailure(lines, 'E1131:', 3)
 enddef
 
 def Test_add_list()
@@ -138,18 +138,18 @@ def Test_add_list()
       var l: list<number>
       add(l, "x")
   END
-  v9.CheckDefFailure(lines, 'E1012:', 2)
+  v9.CheckSourceDefFailure(lines, 'E1012:', 2)
 
   lines =<< trim END
       add(test_null_list(), 123)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1130:', 1)
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1130:', 1)
 
   lines =<< trim END
       var l: list<number> = test_null_list()
       add(l, 123)
   END
-  v9.CheckDefExecFailure(lines, 'E1130:', 2)
+  v9.CheckSourceDefExecFailure(lines, 'E1130:', 2)
 
   # Getting an uninitialized variable allocates a new list at script level
   lines =<< trim END
@@ -157,7 +157,7 @@ def Test_add_list()
       var l: list<number>
       add(l, 123)
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 
   # Adding to a variable set to a NULL list fails
   lines =<< trim END
@@ -165,21 +165,21 @@ def Test_add_list()
       var l: list<number> = test_null_list()
       add(l, 123)
   END
-  v9.CheckScriptFailure(lines, 'E1130:', 3)
+  v9.CheckSourceScriptFailure(lines, 'E1130:', 3)
 
   lines =<< trim END
       vim9script
       var l: list<string> = ['a']
       l->add(123)
   END
-  v9.CheckScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
+  v9.CheckSourceScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
 
   lines =<< trim END
       vim9script
       var l: list<string>
       l->add(123)
   END
-  v9.CheckScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
+  v9.CheckSourceScriptFailure(lines, 'E1012: Type mismatch; expected string but got number', 3)
 enddef
 
 def Test_add_const()
@@ -187,26 +187,26 @@ def Test_add_const()
       const l = [1, 2]
       add(l, 3)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       final l = [1, 2]
       add(l, 3)
       assert_equal([1, 2, 3], l)
   END
-  v9.CheckDefSuccess(lines)
+  v9.CheckSourceDefSuccess(lines)
 
   lines =<< trim END
       const b = 0z0102
       add(b,  0z03)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
 enddef
 
 
 def Test_and()
-  v9.CheckDefAndScriptFailure(['and("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['and(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['and("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['and(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_append()
@@ -224,12 +224,12 @@ def Test_append()
   assert_equal("{'a': 10}", getline(1))
   append(0, function('min'))
   assert_equal("function('min')", getline(1))
-  v9.CheckDefAndScriptFailure(['append([1], "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['append("", "x")'], 'E1209: Invalid value for a line number')
-  v9.CheckDefExecAndScriptFailure(['append(".a", "x")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['append([1], "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['append("", "x")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(['append(".a", "x")'], 'E1209: Invalid value for a line number')
   # only get one error
   assert_fails('append("''aa", "x")', ['E1209: Invalid value for a line number: "''aa"', 'E1209:'])
-  v9.CheckDefExecAndScriptFailure(['append(-1, "x")'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefExecAndScriptFailure(['append(-1, "x")'], 'E966: Invalid line number: -1')
   bwipe!
 enddef
 
@@ -245,12 +245,12 @@ def Test_appendbufline()
   assert_equal(['0', 'one', '1', 'two', '2', ''], getbufline(bnum, 1, '$'))
   appendbufline(bnum, 0, 'zero')
   assert_equal(['zero'], getbufline(bnum, 1))
-  v9.CheckDefAndScriptFailure(['appendbufline([1], 1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['appendbufline(1, [1], "x")'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['appendbufline(' .. bnum .. ', -1, "x")'], 'E966: Invalid line number: -1')
-  v9.CheckDefExecAndScriptFailure(['appendbufline(' .. bnum .. ', "$a", "x")'], 'E1030: Using a String as a Number: "$a"')
+  v9.CheckSourceDefAndScriptFailure(['appendbufline([1], 1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['appendbufline(1, [1], "x")'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['appendbufline(' .. bnum .. ', -1, "x")'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefExecAndScriptFailure(['appendbufline(' .. bnum .. ', "$a", "x")'], 'E1030: Using a String as a Number: "$a"')
   assert_fails('appendbufline(' .. bnum .. ', "$a", "x")', ['E1030: Using a String as a Number: "$a"', 'E1030:'])
-  v9.CheckDefAndScriptFailure(['appendbufline(1, 1, {"a": 10})'], ['E1013: Argument 3: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['appendbufline(1, 1, {"a": 10})'], ['E1013: Argument 3: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 3'])
   bnum->bufwinid()->win_gotoid()
   appendbufline('', 0, 'numbers')
   getline(1)->assert_equal('numbers')
@@ -258,80 +258,80 @@ def Test_appendbufline()
 enddef
 
 def Test_argc()
-  v9.CheckDefAndScriptFailure(['argc("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['argc("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_arglistid()
-  v9.CheckDefAndScriptFailure(['arglistid("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['arglistid(1, "y")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['arglistid("x", "y")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['arglistid("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['arglistid(1, "y")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['arglistid("x", "y")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_argv()
-  v9.CheckDefAndScriptFailure(['argv("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['argv(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['argv("x", "y")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['argv("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['argv(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['argv("x", "y")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_assert_beeps()
-  v9.CheckDefAndScriptFailure(['assert_beeps(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_beeps(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
 enddef
 
 def Test_assert_equalfile()
-  v9.CheckDefAndScriptFailure(['assert_equalfile(1, "f2")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['assert_equalfile("f1", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['assert_equalfile("f1", "f2", ["a"])'], ['E1013: Argument 3: type mismatch, expected string but got list<string>', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['assert_equalfile(1, "f2")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_equalfile("f1", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['assert_equalfile("f1", "f2", ["a"])'], ['E1013: Argument 3: type mismatch, expected string but got list<string>', 'E1174: String required for argument 3'])
 enddef
 
 def Test_assert_exception()
-  v9.CheckDefAndScriptFailure(['assert_exception({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['assert_exception("E1:", v:null)'], ['E1013: Argument 2: type mismatch, expected string but got special', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['assert_exception({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_exception("E1:", v:null)'], ['E1013: Argument 2: type mismatch, expected string but got special', 'E1174: String required for argument 2'])
 enddef
 
 def Test_assert_fails()
-  v9.CheckDefAndScriptFailure(['assert_fails([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['assert_fails("a", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1222: String or List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['assert_fails("a", "b", "c", "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
-  v9.CheckDefAndScriptFailure(['assert_fails("a", "b", "c", 4, 5)'], ['E1013: Argument 5: type mismatch, expected string but got number', 'E1174: String required for argument 5'])
+  v9.CheckSourceDefAndScriptFailure(['assert_fails([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_fails("a", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1222: String or List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['assert_fails("a", "b", "c", "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['assert_fails("a", "b", "c", 4, 5)'], ['E1013: Argument 5: type mismatch, expected string but got number', 'E1174: String required for argument 5'])
 enddef
 
 def Test_assert_inrange()
-  v9.CheckDefAndScriptFailure(['assert_inrange("a", 2, 3)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['assert_inrange(1, "b", 3)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['assert_inrange(1, 2, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['assert_inrange(1, 2, 3, 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['assert_inrange("a", 2, 3)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_inrange(1, "b", 3)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['assert_inrange(1, 2, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['assert_inrange(1, 2, 3, 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
 enddef
 
 def Test_assert_match()
-  v9.CheckDefAndScriptFailure(['assert_match({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', ''])
-  v9.CheckDefAndScriptFailure(['assert_match("a", 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', ''])
-  v9.CheckDefAndScriptFailure(['assert_match("a", "b", null)'], ['E1013: Argument 3: type mismatch, expected string but got special', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_match({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_match("a", 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_match("a", "b", null)'], ['E1013: Argument 3: type mismatch, expected string but got special', ''])
 enddef
 
 def Test_assert_nobeep()
-  v9.CheckDefAndScriptFailure(['assert_nobeep(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_nobeep(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
 enddef
 
 def Test_assert_notmatch()
-  v9.CheckDefAndScriptFailure(['assert_notmatch({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', ''])
-  v9.CheckDefAndScriptFailure(['assert_notmatch("a", 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', ''])
-  v9.CheckDefAndScriptFailure(['assert_notmatch("a", "b", null)'], ['E1013: Argument 3: type mismatch, expected string but got special', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_notmatch({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_notmatch("a", 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', ''])
+  v9.CheckSourceDefAndScriptFailure(['assert_notmatch("a", "b", null)'], ['E1013: Argument 3: type mismatch, expected string but got special', ''])
 enddef
 
 def Test_assert_report()
-  v9.CheckDefAndScriptFailure(['assert_report([1, 2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['assert_report([1, 2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_autocmd_add()
-  v9.CheckDefAndScriptFailure(['autocmd_add({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['autocmd_add({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
 enddef
 
 def Test_autocmd_delete()
-  v9.CheckDefAndScriptFailure(['autocmd_delete({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['autocmd_delete({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
 enddef
 
 def Test_autocmd_get()
-  v9.CheckDefAndScriptFailure(['autocmd_get(10)'], ['E1013: Argument 1: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['autocmd_get(10)'], ['E1013: Argument 1: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 1'])
 enddef
 
 def Test_balloon_show()
@@ -341,8 +341,8 @@ def Test_balloon_show()
   assert_fails('balloon_show(10)', 'E1222:')
   assert_fails('balloon_show(true)', 'E1222:')
 
-  v9.CheckDefAndScriptFailure(['balloon_show(1.2)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['balloon_show({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['balloon_show(1.2)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['balloon_show({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
 enddef
 
 def Test_balloon_split()
@@ -354,22 +354,22 @@ enddef
 
 def Test_blob2list()
   assert_equal(['x', 'x'], blob2list(0z1234)->map((_, _) => 'x'))
-  v9.CheckDefAndScriptFailure(['blob2list(10)'], ['E1013: Argument 1: type mismatch, expected blob but got number', 'E1238: Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['blob2list(10)'], ['E1013: Argument 1: type mismatch, expected blob but got number', 'E1238: Blob required for argument 1'])
 enddef
 
 def Test_browse()
   CheckFeature browse
 
-  v9.CheckDefAndScriptFailure(['browse(2, "title", "dir", "file")'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['browse(true, 2, "dir", "file")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['browse(true, "title", 3, "file")'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
-  v9.CheckDefAndScriptFailure(['browse(true, "title", "dir", 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['browse(2, "title", "dir", "file")'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['browse(true, 2, "dir", "file")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['browse(true, "title", 3, "file")'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['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()
   if has('browse')
-    v9.CheckDefAndScriptFailure(['browsedir({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['browsedir("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['browsedir({}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['browsedir("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
   endif
 enddef
 
@@ -425,8 +425,8 @@ def Test_bufnr()
   buf = bufnr('Xdummy', true)
   buf->assert_notequal(-1)
   exe 'bwipe! ' .. buf
-  v9.CheckDefAndScriptFailure(['bufnr([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['bufnr(1, 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['bufnr([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['bufnr(1, 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
 enddef
 
 def Test_bufwinid()
@@ -452,23 +452,23 @@ def Test_bufwinnr()
 enddef
 
 def Test_byte2line()
-  v9.CheckDefAndScriptFailure(['byte2line("1")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['byte2line([])'], ['E1013: Argument 1: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['byte2line("1")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['byte2line([])'], ['E1013: Argument 1: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 1'])
   byte2line(0)->assert_equal(-1)
 enddef
 
 def Test_byteidx()
-  v9.CheckDefAndScriptFailure(['byteidx(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['byteidx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['byteidx("a", 0, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['byteidx(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['byteidx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['byteidx("a", 0, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
   byteidx('', 0)->assert_equal(0)
   byteidx('', 1)->assert_equal(-1)
 enddef
 
 def Test_byteidxcomp()
-  v9.CheckDefAndScriptFailure(['byteidxcomp(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['byteidxcomp("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['byteidxcomp("a", 0, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['byteidxcomp(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['byteidxcomp("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['byteidxcomp("a", 0, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
 enddef
 
 def Test_call_call()
@@ -488,20 +488,20 @@ def Test_call_call()
       assert_equal('Inner', g:done)
       unlet g:done
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
   delfunc g:Inner
 
-  v9.CheckDefExecAndScriptFailure(['call(123, [2])'], 'E1256: String or function required for argument 1')
-  v9.CheckDefExecAndScriptFailure(['call(true, [2])'], 'E1256: String or function required for argument 1')
-  v9.CheckDefAndScriptFailure(['call("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['call("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['call(123, [2])'], 'E1256: String or function required for argument 1')
+  v9.CheckSourceDefExecAndScriptFailure(['call(true, [2])'], 'E1256: String or function required for argument 1')
+  v9.CheckSourceDefAndScriptFailure(['call("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['call("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_ch_canread()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_canread(10)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_canread(10)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
   endif
 enddef
 
@@ -509,7 +509,7 @@ def Test_ch_close()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_close("c")'], ['E1013: Argument 1: type mismatch, expected channel but got string', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_close("c")'], ['E1013: Argument 1: type mismatch, expected channel but got string', 'E1217: Channel or Job required for argument 1'])
   endif
 enddef
 
@@ -517,7 +517,7 @@ def Test_ch_close_in()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_close_in(true)'], ['E1013: Argument 1: type mismatch, expected channel but got bool', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_close_in(true)'], ['E1013: Argument 1: type mismatch, expected channel but got bool', 'E1217: Channel or Job required for argument 1'])
   endif
 enddef
 
@@ -525,8 +525,8 @@ def Test_ch_evalexpr()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_evalexpr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_evalexpr(test_null_channel(), 1, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+    v9.CheckSourceDefAndScriptFailure(['ch_evalexpr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_evalexpr(test_null_channel(), 1, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   endif
 enddef
 
@@ -534,9 +534,9 @@ def Test_ch_evalraw()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_evalraw(1, "")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_evalraw(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1221: String or Blob required for argument 2'])
-    v9.CheckDefAndScriptFailure(['ch_evalraw(test_null_channel(), "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+    v9.CheckSourceDefAndScriptFailure(['ch_evalraw(1, "")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_evalraw(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1221: String or Blob required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_evalraw(test_null_channel(), "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   endif
 enddef
 
@@ -544,8 +544,8 @@ def Test_ch_getbufnr()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_getbufnr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_getbufnr(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_getbufnr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_getbufnr(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
     # test empty string argument for ch_getbufnr()
     var job: job = job_start(&shell)
     g:WaitForAssert(() => assert_equal('run', job_status(job)))
@@ -558,8 +558,8 @@ def Test_ch_getjob()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_getjob(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_getjob({"a": 10})'], ['E1013: Argument 1: type mismatch, expected channel but got dict<number>', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_getjob(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_getjob({"a": 10})'], ['E1013: Argument 1: type mismatch, expected channel but got dict<number>', 'E1217: Channel or Job required for argument 1'])
     assert_equal(0, ch_getjob(test_null_channel()))
   endif
 enddef
@@ -568,7 +568,7 @@ def Test_ch_info()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_info([1])'], ['E1013: Argument 1: type mismatch, expected channel but got list<number>', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_info([1])'], ['E1013: Argument 1: type mismatch, expected channel but got list<number>', 'E1217: Channel or Job required for argument 1'])
   endif
 enddef
 
@@ -576,8 +576,8 @@ def Test_ch_log()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_log(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_log("a", 1)'], ['E1013: Argument 2: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_log(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_log("a", 1)'], ['E1013: Argument 2: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 2'])
   endif
 enddef
 
@@ -589,8 +589,8 @@ def Test_ch_logfile()
     assert_fails('ch_logfile("foo", true)', 'E1174:')
     ch_logfile('', '')->assert_equal(0)
 
-    v9.CheckDefAndScriptFailure(['ch_logfile(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_logfile("a", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_logfile(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_logfile("a", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1174: String required for argument 2'])
   endif
 enddef
 
@@ -598,9 +598,9 @@ def Test_ch_open()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_open({"a": 10}, "a")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_open("a", [1])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
-    v9.CheckDefExecAndScriptFailure(['ch_open("")'], 'E475: Invalid argument')
+    v9.CheckSourceDefAndScriptFailure(['ch_open({"a": 10}, "a")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_open("a", [1])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefExecAndScriptFailure(['ch_open("")'], 'E475: Invalid argument')
   endif
 enddef
 
@@ -608,8 +608,8 @@ def Test_ch_read()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_read(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_read(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_read(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_read(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
   endif
 enddef
 
@@ -617,8 +617,8 @@ def Test_ch_readblob()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_readblob(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_readblob(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_readblob(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_readblob(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
   endif
 enddef
 
@@ -626,8 +626,8 @@ def Test_ch_readraw()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_readraw(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_readraw(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_readraw(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_readraw(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
   endif
 enddef
 
@@ -635,8 +635,8 @@ def Test_ch_sendexpr()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_sendexpr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_sendexpr(test_null_channel(), 1, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+    v9.CheckSourceDefAndScriptFailure(['ch_sendexpr(1, "a")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_sendexpr(test_null_channel(), 1, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   endif
 enddef
 
@@ -644,9 +644,9 @@ def Test_ch_sendraw()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_sendraw(1, "")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_sendraw(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1221: String or Blob required for argument 2'])
-    v9.CheckDefAndScriptFailure(['ch_sendraw(test_null_channel(), "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+    v9.CheckSourceDefAndScriptFailure(['ch_sendraw(1, "")'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_sendraw(test_null_channel(), 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1221: String or Blob required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_sendraw(test_null_channel(), "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   endif
 enddef
 
@@ -654,8 +654,8 @@ def Test_ch_setoptions()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_setoptions(1, {})'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_setoptions(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_setoptions(1, {})'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_setoptions(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
   endif
 enddef
 
@@ -663,8 +663,8 @@ def Test_ch_status()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['ch_status(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['ch_status(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['ch_status(1)'], ['E1013: Argument 1: type mismatch, expected channel but got number', 'E1217: Channel or Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['ch_status(test_null_channel(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
   endif
 enddef
 
@@ -672,8 +672,8 @@ def Test_char2nr()
   char2nr('あ', true)->assert_equal(12354)
 
   assert_fails('char2nr(true)', 'E1174:')
-  v9.CheckDefAndScriptFailure(['char2nr(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['char2nr("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['char2nr(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['char2nr("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
   assert_equal(97, char2nr('a', 1))
   assert_equal(97, char2nr('a', 0))
   assert_equal(97, char2nr('a', true))
@@ -687,10 +687,10 @@ def Test_charclass()
 enddef
 
 def Test_charcol()
-  v9.CheckDefAndScriptFailure(['charcol(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['charcol({a: 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['charcol(".", [])'], ['E1013: Argument 2: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['charcol("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['charcol(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['charcol({a: 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['charcol(".", [])'], ['E1013: Argument 2: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['charcol("")'], 'E1209: Invalid value for a line number')
   new
   setline(1, ['abcdefgh'])
   cursor(1, 4)
@@ -701,10 +701,10 @@ def Test_charcol()
 enddef
 
 def Test_charidx()
-  v9.CheckDefAndScriptFailure(['charidx(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['charidx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['charidx("a", 1, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['charidx("a", 1, 0, "")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['charidx(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['charidx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['charidx("a", 1, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['charidx("a", 1, 0, "")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
   charidx('', 0)->assert_equal(0)
   charidx('', 1)->assert_equal(-1)
 enddef
@@ -714,15 +714,15 @@ def Test_chdir()
 enddef
 
 def Test_cindent()
-  v9.CheckDefAndScriptFailure(['cindent([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['cindent(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['cindent("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['cindent([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['cindent(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['cindent("")'], 'E1209: Invalid value for a line number')
   assert_equal(-1, cindent(0))
   assert_equal(0, cindent('.'))
 enddef
 
 def Test_clearmatches()
-  v9.CheckDefAndScriptFailure(['clearmatches("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['clearmatches("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_col()
@@ -735,26 +735,26 @@ def Test_col()
 
   assert_fails('col(true)', 'E1222:')
 
-  v9.CheckDefAndScriptFailure(['col(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['col({a: 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['col(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['col(".", [])'], ['E1013: Argument 2: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['col("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['col(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['col({a: 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['col(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['col(".", [])'], ['E1013: Argument 2: type mismatch, expected number but got list<any>', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['col("")'], 'E1209: Invalid value for a line number')
   bw!
 enddef
 
 def Test_complete()
-  v9.CheckDefAndScriptFailure(['complete("1", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['complete(1, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['complete("1", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['complete(1, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
 enddef
 
 def Test_complete_add()
-  v9.CheckDefAndScriptFailure(['complete_add([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1223: String or Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['complete_add([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1223: String or Dictionary required for argument 1'])
 enddef
 
 def Test_complete_info()
-  v9.CheckDefAndScriptFailure(['complete_info("")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['complete_info({})'], ['E1013: Argument 1: type mismatch, expected list<string> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['complete_info("")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['complete_info({})'], ['E1013: Argument 1: type mismatch, expected list<string> but got dict<any>', 'E1211: List required for argument 1'])
   assert_equal({'pum_visible': 0, 'mode': '', 'selected': -1, 'items': []}, complete_info())
   assert_equal({'mode': '', 'items': []}, complete_info(['mode', 'items']))
 enddef
@@ -767,10 +767,10 @@ def Test_confirm()
   assert_fails('confirm(true)', 'E1174:')
   assert_fails('confirm("yes", true)', 'E1174:')
   assert_fails('confirm("yes", "maybe", 2, true)', 'E1174:')
-  v9.CheckDefAndScriptFailure(['confirm(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['confirm("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['confirm("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['confirm("a", "b", 3, 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['confirm(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['confirm("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['confirm("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['confirm("a", "b", 3, 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
 enddef
 
 def Test_copy_return_type()
@@ -798,7 +798,7 @@ def Test_copy_return_type()
       var nll: list<list<number>> = [[1, 2]]
       nll->copy()[0]->extend(['x'])
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<number> but got list<string> in extend()')
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<number> but got list<string> in extend()')
 
   var nd: dict<number> = {a: 1, b: 2}
   assert_equal({a: 1, b: 2, c: 'x'}, nd->copy()->extend({c: 'x'}))
@@ -806,7 +806,7 @@ def Test_copy_return_type()
       var ndd: dict<dict<number>> = {a: {x: 1, y: 2}}
       ndd->copy()['a']->extend({z: 'x'})
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<number> but got dict<string> in extend()')
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<number> but got dict<string> in extend()')
 
   # after a deepcopy() the item type can also change
   var nll: list<list<number>> = [[1, 2]]
@@ -822,9 +822,9 @@ enddef
 def Test_count()
   count('ABC ABC ABC', 'b', true)->assert_equal(3)
   count('ABC ABC ABC', 'b', false)->assert_equal(0)
-  v9.CheckDefAndScriptFailure(['count(10, 1)'], 'E1225: String, List or Dictionary required for argument 1')
-  v9.CheckDefAndScriptFailure(['count("a", [1], 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['count("a", [1], 0, "b")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['count(10, 1)'], 'E1225: String, List or Dictionary required for argument 1')
+  v9.CheckSourceDefAndScriptFailure(['count("a", [1], 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['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)
@@ -833,9 +833,9 @@ enddef
 def Test_cscope_connection()
   CheckFeature cscope
   assert_equal(0, cscope_connection())
-  v9.CheckDefAndScriptFailure(['cscope_connection("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['cscope_connection(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['cscope_connection(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['cscope_connection("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['cscope_connection(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['cscope_connection(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
 enddef
 
 def Test_cursor()
@@ -851,35 +851,35 @@ def Test_cursor()
   var lines =<< trim END
     cursor('2', 1)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1209:')
-  v9.CheckDefAndScriptFailure(['cursor(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected number but got blob', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['cursor(1, "2")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['cursor(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['cursor("", 2)'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1209:')
+  v9.CheckSourceDefAndScriptFailure(['cursor(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected number but got blob', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['cursor(1, "2")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['cursor(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['cursor("", 2)'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_debugbreak()
   CheckMSWindows
-  v9.CheckDefAndScriptFailure(['debugbreak("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['debugbreak("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_deepcopy()
-  v9.CheckDefAndScriptFailure(['deepcopy({}, 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['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)
 
-  v9.CheckDefAndScriptFailure(['delete(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['delete("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['delete("")'], 'E474: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['delete(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['delete("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['delete("")'], 'E474: Invalid argument')
 enddef
 
 def Test_deletebufline()
-  v9.CheckDefAndScriptFailure(['deletebufline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['deletebufline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['deletebufline("a", 2, 0z10)'], ['E1013: Argument 3: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['deletebufline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['deletebufline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['deletebufline("a", 2, 0z10)'], ['E1013: Argument 3: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 3'])
   new
   setline(1, ['one', 'two'])
   deletebufline('', 1)
@@ -892,58 +892,58 @@ def Test_deletebufline()
 enddef
 
 def Test_diff_filler()
-  v9.CheckDefAndScriptFailure(['diff_filler([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['diff_filler(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['diff_filler("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['diff_filler([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['diff_filler(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['diff_filler("")'], 'E1209: Invalid value for a line number')
   assert_equal(0, diff_filler(1))
   assert_equal(0, diff_filler('.'))
 enddef
 
 def Test_diff_hlID()
-  v9.CheckDefAndScriptFailure(['diff_hlID(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['diff_hlID(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['diff_hlID("", 10)'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['diff_hlID(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['diff_hlID(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['diff_hlID("", 10)'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_digraph_get()
-  v9.CheckDefAndScriptFailure(['digraph_get(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['digraph_get("")'], 'E1214: Digraph must be just two characters')
+  v9.CheckSourceDefAndScriptFailure(['digraph_get(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['digraph_get("")'], 'E1214: Digraph must be just two characters')
 enddef
 
 def Test_digraph_getlist()
-  v9.CheckDefAndScriptFailure(['digraph_getlist(10)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['digraph_getlist("")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['digraph_getlist(10)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['digraph_getlist("")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_digraph_set()
-  v9.CheckDefAndScriptFailure(['digraph_set(10, "a")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['digraph_set("ab", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['digraph_set("", "a")'], 'E1214: Digraph must be just two characters')
+  v9.CheckSourceDefAndScriptFailure(['digraph_set(10, "a")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['digraph_set("ab", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['digraph_set("", "a")'], 'E1214: Digraph must be just two characters')
 enddef
 
 def Test_digraph_setlist()
-  v9.CheckDefAndScriptFailure(['digraph_setlist("a")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1216: digraph_setlist() argument must be a list of lists with two items'])
-  v9.CheckDefAndScriptFailure(['digraph_setlist({})'], ['E1013: Argument 1: type mismatch, expected list<string> but got dict<any>', 'E1216: digraph_setlist() argument must be a list of lists with two items'])
+  v9.CheckSourceDefAndScriptFailure(['digraph_setlist("a")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1216: digraph_setlist() argument must be a list of lists with two items'])
+  v9.CheckSourceDefAndScriptFailure(['digraph_setlist({})'], ['E1013: Argument 1: type mismatch, expected list<string> but got dict<any>', 'E1216: digraph_setlist() argument must be a list of lists with two items'])
 enddef
 
 def Test_echoraw()
-  v9.CheckDefAndScriptFailure(['echoraw(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['echoraw(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['echoraw(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['echoraw(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_escape()
-  v9.CheckDefAndScriptFailure(['escape(10, " ")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['escape(true, false)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['escape("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['escape(10, " ")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['escape(true, false)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['escape("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   assert_equal('a\:b', escape("a:b", ":"))
   escape('abc', '')->assert_equal('abc')
   escape('', ':')->assert_equal('')
 enddef
 
 def Test_eval()
-  v9.CheckDefAndScriptFailure(['eval(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['eval(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['eval("")'], 'E15: Invalid expression')
+  v9.CheckSourceDefAndScriptFailure(['eval(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['eval(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['eval("")'], 'E15: Invalid expression')
   assert_equal(2, eval('1 + 1'))
 enddef
 
@@ -951,8 +951,8 @@ def Test_executable()
   assert_false(executable(""))
   assert_false(executable(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo executable(123)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo executable(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo executable(123)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo executable(true)'], 'E1013:')
 enddef
 
 def Test_execute()
@@ -961,22 +961,22 @@ def Test_execute()
   res = execute(["echo 'here'", "echo 'there'"])
   assert_equal("\nhere\nthere", res)
 
-  v9.CheckDefAndScriptFailure(['execute(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
-  v9.CheckDefFailure(['execute([123])'], 'E1013: Argument 1: type mismatch, expected list<string> but got list<number>')
-  v9.CheckDefExecFailure(['echo execute(["xx", 123])'], 'E492')
-  v9.CheckDefAndScriptFailure(['execute("xx", 123)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['execute(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefFailure(['execute([123])'], 'E1013: Argument 1: type mismatch, expected list<string> but got list<number>')
+  v9.CheckSourceDefExecFailure(['echo execute(["xx", 123])'], 'E492')
+  v9.CheckSourceDefAndScriptFailure(['execute("xx", 123)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
 enddef
 
 def Test_exepath()
-  v9.CheckDefExecFailure(['echo exepath(true)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo exepath(v:null)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo exepath("")'], 'E1175:')
+  v9.CheckSourceDefExecFailure(['echo exepath(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo exepath(v:null)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo exepath("")'], 'E1175:')
 enddef
 
 command DoSomeCommand let g:didSomeCommand = 4
 
 def Test_exists()
-  v9.CheckDefAndScriptFailure(['exists(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['exists(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   call assert_equal(1, exists('&tabstop'))
 
   var lines =<< trim END
@@ -985,14 +985,14 @@ def Test_exists()
       endif
     endif
   END
-  v9.CheckDefFailure(lines, 'E113:')
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceDefFailure(lines, 'E113:')
+  v9.CheckSourceScriptSuccess(lines)
 enddef
 
 def Test_exists_compiled()
   call assert_equal(1, exists_compiled('&tabstop'))
-  v9.CheckDefAndScriptFailure(['exists_compiled(10)'], ['E1232:', 'E1233:'])
-  v9.CheckDefAndScriptFailure(['exists_compiled(v:progname)'], ['E1232:', 'E1233:'])
+  v9.CheckSourceDefAndScriptFailure(['exists_compiled(10)'], ['E1232:', 'E1233:'])
+  v9.CheckSourceDefAndScriptFailure(['exists_compiled(v:progname)'], ['E1232:', 'E1233:'])
 
   if exists_compiled('+newoption')
     if &newoption == 'ok'
@@ -1044,9 +1044,9 @@ def Test_expand()
   split SomeFile
   expand('%', true, true)->assert_equal(['SomeFile'])
   close
-  v9.CheckDefAndScriptFailure(['expand(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['expand("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['expand("a", true, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['expand(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['expand("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['expand("a", true, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
   expand('')->assert_equal('')
 
   var caught = false
@@ -1065,8 +1065,8 @@ def Test_expandcmd()
   assert_equal("yes", expandcmd("`={a: 'yes'}['a']`"))
   expandcmd('')->assert_equal('')
 
-  v9.CheckDefAndScriptFailure(['expandcmd([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['expandcmd("abc", [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['expandcmd([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['expandcmd("abc", [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_extend_arg_types()
@@ -1093,7 +1093,7 @@ def Test_extend_arg_types()
       dany->extend({b: 'x'})
       assert_equal({a: 0, b: 'x'}, dany)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
       assert_equal([1, 2, "x"], extend([1, 2], ["x"]))
@@ -1101,17 +1101,17 @@ def Test_extend_arg_types()
 
       assert_equal({a: 1, b: "x"}, extend({a: 1}, {b: "x"}))
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
-  v9.CheckDefAndScriptFailure(['extend("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E712: Argument of extend() must be a List or Dictionary'])
-  v9.CheckDefAndScriptFailure(['extend([1, 2], 3)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E712: Argument of extend() must be a List or Dictionary'])
-  v9.CheckDefAndScriptFailure(['var ll = [1, 2]', 'extend(ll, ["x"])'], ['E1013: Argument 2: type mismatch, expected list<number> but got list<string>', 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>'])
-  v9.CheckDefFailure(['extend([1, 2], [3], "x")'], 'E1013: Argument 3: type mismatch, expected number but got string')
+  v9.CheckSourceDefAndScriptFailure(['extend("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E712: Argument of extend() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['extend([1, 2], 3)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E712: Argument of extend() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['var ll = [1, 2]', 'extend(ll, ["x"])'], ['E1013: Argument 2: type mismatch, expected list<number> but got list<string>', 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>'])
+  v9.CheckSourceDefFailure(['extend([1, 2], [3], "x")'], 'E1013: Argument 3: type mismatch, expected number but got string')
 
-  v9.CheckDefFailure(['extend({a: 1}, 42)'], 'E1013: Argument 2: type mismatch, expected dict<any> but got number')
-  v9.CheckDefFailure(['extend({a: 1}, {b: 2}, 1)'], 'E1013: Argument 3: type mismatch, expected string but got number')
+  v9.CheckSourceDefFailure(['extend({a: 1}, 42)'], 'E1013: Argument 2: type mismatch, expected dict<any> but got number')
+  v9.CheckSourceDefFailure(['extend({a: 1}, {b: 2}, 1)'], 'E1013: Argument 3: type mismatch, expected string but got number')
 
-  v9.CheckScriptFailure(['vim9script', 'var l = [1]', 'extend(l, ["b", 1])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<any> in extend()')
+  v9.CheckSourceScriptFailure(['vim9script', 'var l = [1]', 'extend(l, ["b", 1])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<any> in extend()')
 enddef
 
 func g:ExtendDict(d)
@@ -1123,26 +1123,26 @@ def Test_extend_dict_item_type()
        var d: dict<number> = {a: 1}
        extend(d, {b: 2})
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
        var d: dict<number> = {a: 1}
        extend(d, {b: 'x'})
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<number> but got dict<string>', 2)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<number> but got dict<string>', 2)
 
   lines =<< trim END
        var d: dict<number> = {a: 1}
        g:ExtendDict(d)
   END
-  v9.CheckDefExecFailure(lines, 'E1012: Type mismatch; expected number but got string', 0)
-  v9.CheckScriptFailure(['vim9script'] + lines, 'E1012:', 1)
+  v9.CheckSourceDefExecFailure(lines, 'E1012: Type mismatch; expected number but got string', 0)
+  v9.CheckSourceScriptFailure(['vim9script'] + lines, 'E1012:', 1)
 
   lines =<< trim END
        var d: dict<bool>
        extend(d, {b: 0})
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<bool> but got dict<number>', 2)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected dict<bool> but got dict<number>', 2)
 enddef
 
 func g:ExtendList(l)
@@ -1154,26 +1154,26 @@ def Test_extend_list_item_type()
        var l: list<number> = [1]
        extend(l, [2])
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
        var l: list<number> = [1]
        extend(l, ['x'])
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>', 2)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>', 2)
 
   lines =<< trim END
        var l: list<number> = [1]
        g:ExtendList(l)
   END
-  v9.CheckDefExecFailure(lines, 'E1012: Type mismatch; expected number but got string', 0)
-  v9.CheckScriptFailure(['vim9script'] + lines, 'E1012:', 1)
+  v9.CheckSourceDefExecFailure(lines, 'E1012: Type mismatch; expected number but got string', 0)
+  v9.CheckSourceScriptFailure(['vim9script'] + lines, 'E1012:', 1)
 
   lines =<< trim END
        var l: list<bool>
        extend(l, [0])
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<bool> but got list<number>', 2)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected list<bool> but got list<number>', 2)
 enddef
 
 def Test_extend_return_type()
@@ -1203,7 +1203,7 @@ def Test_extend_with_error_function()
 
       Test()
   END
-  v9.CheckScriptFailure(lines, 'E1001: Variable not found: m')
+  v9.CheckSourceScriptFailure(lines, 'E1001: Variable not found: m')
 enddef
 
 def Test_extend_const()
@@ -1211,20 +1211,20 @@ def Test_extend_const()
       const l = [1, 2]
       extend(l, [3])
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       const d = {a: 1, b: 2}
       extend(d, {c: 3})
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
 
   lines =<< trim END
       final d = {a: 1, b: 2}
       extend(d, {c: 3})
       assert_equal({a: 1, b: 2, c: 3}, d)
   END
-  v9.CheckDefSuccess(lines)
+  v9.CheckSourceDefSuccess(lines)
 
   # item in a for loop is final
   lines =<< trim END
@@ -1233,23 +1233,23 @@ def Test_extend_const()
         item->extend({x: 2})
       endfor
   END
-  v9.CheckDefSuccess(lines)
+  v9.CheckSourceDefSuccess(lines)
 enddef
 
 def Test_extendnew()
   assert_equal([1, 2, 'a'], extendnew([1, 2], ['a']))
   assert_equal({one: 1, two: 'a'}, extendnew({one: 1}, {two: 'a'}))
 
-  v9.CheckDefAndScriptFailure(['extendnew({a: 1}, 42)'], ['E1013: Argument 2: type mismatch, expected dict<number> but got number', 'E712: Argument of extendnew() must be a List or Dictionary'])
-  v9.CheckDefAndScriptFailure(['extendnew({a: 1}, [42])'], ['E1013: Argument 2: type mismatch, expected dict<number> but got list<number>', 'E712: Argument of extendnew() must be a List or Dictionary'])
-  v9.CheckDefAndScriptFailure(['extendnew([1, 2], "x")'], ['E1013: Argument 2: type mismatch, expected list<number> but got string', 'E712: Argument of extendnew() must be a List or Dictionary'])
-  v9.CheckDefAndScriptFailure(['extendnew([1, 2], {x: 1})'], ['E1013: Argument 2: type mismatch, expected list<number> but got dict<number>', 'E712: Argument of extendnew() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['extendnew({a: 1}, 42)'], ['E1013: Argument 2: type mismatch, expected dict<number> but got number', 'E712: Argument of extendnew() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['extendnew({a: 1}, [42])'], ['E1013: Argument 2: type mismatch, expected dict<number> but got list<number>', 'E712: Argument of extendnew() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['extendnew([1, 2], "x")'], ['E1013: Argument 2: type mismatch, expected list<number> but got string', 'E712: Argument of extendnew() must be a List or Dictionary'])
+  v9.CheckSourceDefAndScriptFailure(['extendnew([1, 2], {x: 1})'], ['E1013: Argument 2: type mismatch, expected list<number> but got dict<number>', 'E712: Argument of extendnew() must be a List or Dictionary'])
 enddef
 
 def Test_feedkeys()
-  v9.CheckDefAndScriptFailure(['feedkeys(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['feedkeys("x", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['feedkeys([], {})'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['feedkeys(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['feedkeys("x", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['feedkeys([], {})'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
   g:TestVar = 1
   feedkeys(":g:TestVar = 789\n", 'xt')
   assert_equal(789, g:TestVar)
@@ -1260,16 +1260,16 @@ def Test_filereadable()
   assert_false(filereadable(""))
   assert_false(filereadable(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo filereadable(123)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo filereadable(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo filereadable(123)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo filereadable(true)'], 'E1013:')
 enddef
 
 def Test_filewritable()
   assert_false(filewritable(""))
   assert_false(filewritable(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo filewritable(123)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo filewritable(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo filewritable(123)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo filewritable(true)'], 'E1013:')
 enddef
 
 def Test_finddir()
@@ -1278,20 +1278,20 @@ def Test_finddir()
   var lines =<< trim END
       var l: list<string> = finddir('nothing', '*;', -1)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
   delete('Xtestdir', 'rf')
 
-  v9.CheckDefAndScriptFailure(['finddir(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['finddir(v:null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
-  v9.CheckDefExecFailure(['echo finddir("")'], 'E1175:')
-  v9.CheckDefAndScriptFailure(['finddir("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['finddir("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['finddir(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['finddir(v:null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecFailure(['echo finddir("")'], 'E1175:')
+  v9.CheckSourceDefAndScriptFailure(['finddir("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['finddir("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   finddir('abc', '')->assert_equal('')
 
-  v9.CheckDefFailure(['var s: list<string> = finddir("foo")'], 'E1012: Type mismatch; expected list<string> but got string')
-  v9.CheckDefFailure(['var s: list<string> = finddir("foo", "path")'], 'E1012: Type mismatch; expected list<string> but got string')
+  v9.CheckSourceDefFailure(['var s: list<string> = finddir("foo")'], 'E1012: Type mismatch; expected list<string> but got string')
+  v9.CheckSourceDefFailure(['var s: list<string> = finddir("foo", "path")'], 'E1012: Type mismatch; expected list<string> but got string')
   # with third argument only runtime type checking
-  v9.CheckDefCompileSuccess(['var s: list<string> = finddir("foo", "path", 1)'])
+  v9.CheckSourceDefCompileSuccess(['var s: list<string> = finddir("foo", "path", 1)'])
 enddef
 
 def Test_findfile()
@@ -1299,13 +1299,13 @@ def Test_findfile()
   var lines =<< trim END
       var l: list<string> = findfile('nothing', '*;', -1)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
-  v9.CheckDefExecFailure(['findfile(true)'], 'E1013: Argument 1: type mismatch, expected string but got bool')
-  v9.CheckDefExecFailure(['findfile(v:null)'], 'E1013: Argument 1: type mismatch, expected string but got special')
-  v9.CheckDefExecFailure(['findfile("")'], 'E1175:')
-  v9.CheckDefAndScriptFailure(['findfile("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['findfile("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefExecFailure(['findfile(true)'], 'E1013: Argument 1: type mismatch, expected string but got bool')
+  v9.CheckSourceDefExecFailure(['findfile(v:null)'], 'E1013: Argument 1: type mismatch, expected string but got special')
+  v9.CheckSourceDefExecFailure(['findfile("")'], 'E1175:')
+  v9.CheckSourceDefAndScriptFailure(['findfile("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['findfile("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   findfile('abc', '')->assert_equal('')
 enddef
 
@@ -1313,7 +1313,7 @@ def Test_flatten()
   var lines =<< trim END
       echo flatten([1, 2, 3])
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1158:')
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1158:')
 enddef
 
 def Test_flattennew()
@@ -1328,106 +1328,106 @@ def Test_flattennew()
       var ll: list<list<string>> = [['a', 'b', 'c']]
       assert_equal(['a', 'b', 'c'], ll->flattennew())
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
-  v9.CheckDefAndScriptFailure(['flattennew({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['flattennew([], "1")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['flattennew({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['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
 def Test_float_funcs_args()
   # acos()
-  v9.CheckDefAndScriptFailure(['acos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['acos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('1.570796', string(acos(0.0)))
   # asin()
-  v9.CheckDefAndScriptFailure(['asin("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['asin("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(asin(0.0)))
   # atan()
-  v9.CheckDefAndScriptFailure(['atan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['atan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(atan(0.0)))
   # atan2()
-  v9.CheckDefAndScriptFailure(['atan2("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['atan2("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('-2.356194', string(atan2(-1, -1)))
-  v9.CheckDefAndScriptFailure(['atan2(1.2, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['atan2(1.2)'], ['E119:', 'E119:'])
+  v9.CheckSourceDefAndScriptFailure(['atan2(1.2, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['atan2(1.2)'], ['E119:', 'E119:'])
   # ceil()
-  v9.CheckDefAndScriptFailure(['ceil("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['ceil("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('2.0', string(ceil(2.0)))
   # cos()
-  v9.CheckDefAndScriptFailure(['cos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['cos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('1.0', string(cos(0.0)))
   # cosh()
-  v9.CheckDefAndScriptFailure(['cosh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['cosh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('1.0', string(cosh(0.0)))
   # exp()
-  v9.CheckDefAndScriptFailure(['exp("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['exp("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('1.0', string(exp(0.0)))
   # float2nr()
-  v9.CheckDefAndScriptFailure(['float2nr("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['float2nr("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal(1, float2nr(1.234))
   # floor()
-  v9.CheckDefAndScriptFailure(['floor("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['floor("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('2.0', string(floor(2.0)))
   # fmod()
-  v9.CheckDefAndScriptFailure(['fmod(1.1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['fmod("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['fmod(1.1)'], ['E119:', 'E119:'])
+  v9.CheckSourceDefAndScriptFailure(['fmod(1.1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['fmod("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['fmod(1.1)'], ['E119:', 'E119:'])
   assert_equal('0.13', string(fmod(12.33, 1.22)))
   # isinf()
-  v9.CheckDefAndScriptFailure(['isinf("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['isinf("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal(1, isinf(1.0 / 0.0))
   # isnan()
-  v9.CheckDefAndScriptFailure(['isnan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['isnan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_true(isnan(0.0 / 0.0))
   # log()
-  v9.CheckDefAndScriptFailure(['log("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['log("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(log(1.0)))
   # log10()
-  v9.CheckDefAndScriptFailure(['log10("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['log10("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(log10(1.0)))
   # pow()
-  v9.CheckDefAndScriptFailure(['pow("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['pow(1.1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['pow(1.1)'], ['E119:', 'E119:'])
+  v9.CheckSourceDefAndScriptFailure(['pow("a", 1.1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['pow(1.1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['pow(1.1)'], ['E119:', 'E119:'])
   assert_equal('1.0', string(pow(0.0, 0.0)))
   # round()
-  v9.CheckDefAndScriptFailure(['round("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['round("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('2.0', string(round(2.1)))
   # sin()
-  v9.CheckDefAndScriptFailure(['sin("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sin("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(sin(0.0)))
   # sinh()
-  v9.CheckDefAndScriptFailure(['sinh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sinh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(sinh(0.0)))
   # sqrt()
-  v9.CheckDefAndScriptFailure(['sqrt("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sqrt("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(sqrt(0.0)))
   # tan()
-  v9.CheckDefAndScriptFailure(['tan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tan("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(tan(0.0)))
   # tanh()
-  v9.CheckDefAndScriptFailure(['tanh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tanh("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('0.0', string(tanh(0.0)))
   # trunc()
-  v9.CheckDefAndScriptFailure(['trunc("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['trunc("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1219: Float or Number required for argument 1'])
   assert_equal('2.0', string(trunc(2.1)))
 enddef
 
 def Test_fnameescape()
-  v9.CheckDefAndScriptFailure(['fnameescape(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['fnameescape(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal('\+a\%b\|', fnameescape('+a%b|'))
   fnameescape('')->assert_equal('')
 enddef
 
 def Test_fnamemodify()
-  v9.CheckDefSuccess(['echo fnamemodify(test_null_string(), ":p")'])
-  v9.CheckDefSuccess(['echo fnamemodify("", ":p")'])
-  v9.CheckDefSuccess(['echo fnamemodify("file", test_null_string())'])
-  v9.CheckDefSuccess(['echo fnamemodify("file", "")'])
+  v9.CheckSourceDefSuccess(['echo fnamemodify(test_null_string(), ":p")'])
+  v9.CheckSourceDefSuccess(['echo fnamemodify("", ":p")'])
+  v9.CheckSourceDefSuccess(['echo fnamemodify("file", test_null_string())'])
+  v9.CheckSourceDefSuccess(['echo fnamemodify("file", "")'])
 
-  v9.CheckDefExecFailure(['echo fnamemodify(true, ":p")'], 'E1013: Argument 1: type mismatch, expected string but got bool')
-  v9.CheckDefExecFailure(['echo fnamemodify(v:null, ":p")'], 'E1013: Argument 1: type mismatch, expected string but got special')
-  v9.CheckDefExecFailure(['echo fnamemodify("file", true)'],  'E1013: Argument 2: type mismatch, expected string but got bool')
+  v9.CheckSourceDefExecFailure(['echo fnamemodify(true, ":p")'], 'E1013: Argument 1: type mismatch, expected string but got bool')
+  v9.CheckSourceDefExecFailure(['echo fnamemodify(v:null, ":p")'], 'E1013: Argument 1: type mismatch, expected string but got special')
+  v9.CheckSourceDefExecFailure(['echo fnamemodify("file", true)'],  'E1013: Argument 2: type mismatch, expected string but got bool')
 enddef
 
 def Wrong_dict_key_type(items: list<number>): list<number>
@@ -1454,10 +1454,10 @@ def Test_filter()
       enddef
       assert_equal(['xxx'], Func())
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 
-  v9.CheckDefAndScriptFailure(['filter(1.1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got float', 'E1251: List, Dictionary, Blob or String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['filter([1, 2], 4)'], ['E1256: String or function required for argument 2', 'E1024: Using a Number as a String'])
+  v9.CheckSourceDefAndScriptFailure(['filter(1.1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got float', 'E1251: List, Dictionary, Blob or String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['filter([1, 2], 4)'], ['E1256: String or function required for argument 2', 'E1024: Using a Number as a String'])
 
   lines =<< trim END
     def F(i: number, v: any): string
@@ -1465,51 +1465,51 @@ def Test_filter()
     enddef
     echo filter([1, 2, 3], F)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool but got func(number, any): string', 'E1135: Using a String as a Bool:'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool but got func(number, any): string', 'E1135: Using a String as a Bool:'])
 
   # check first function argument type
   lines =<< trim END
     var l = [1, 2, 3]
     filter(l, (i: string, v: number) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(string, number): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(string, number): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
   lines =<< trim END
     var d = {a: 1}
     filter(d, (i: number, v: number) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): bool but got func(number, number): bool', 'E1013: Argument 1: type mismatch, expected number but got string'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): bool but got func(number, number): bool', 'E1013: Argument 1: type mismatch, expected number but got string'])
   lines =<< trim END
     var b = 0z1122
     filter(b, (i: string, v: number) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(string, number): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(string, number): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
   lines =<< trim END
     var s = 'text'
     filter(s, (i: string, v: string) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?string): bool but got func(string, string): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?string): bool but got func(string, string): bool', 'E1013: Argument 1: type mismatch, expected string but got number'])
 
   # check second function argument type
   lines =<< trim END
     var l = [1, 2, 3]
     filter(l, (i: number, v: string) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(number, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(number, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
   lines =<< trim END
     var d = {a: 1}
     filter(d, (i: string, v: string) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): bool but got func(string, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): bool but got func(string, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
   lines =<< trim END
     var b = 0z1122
     filter(b, (i: number, v: string) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(number, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): bool but got func(number, string): bool', 'E1013: Argument 2: type mismatch, expected string but got number'])
   lines =<< trim END
     var s = 'text'
     filter(s, (i: number, v: number) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?string): bool but got func(number, number): bool', 'E1013: Argument 2: type mismatch, expected number but got string'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?string): bool but got func(number, number): bool', 'E1013: Argument 2: type mismatch, expected number but got string'])
 enddef
 
 def Test_filter_wrong_dict_key_type()
@@ -1536,39 +1536,39 @@ def Test_filter_const()
       const l = [1, 2, 3]
       filter(l, 'v:val == 2')
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       const d = {a: 1, b: 2}
       filter(d, 'v:val == 2')
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
 enddef
 
 def Test_foldclosed()
-  v9.CheckDefAndScriptFailure(['foldclosed(function("min"))'], ['E1013: Argument 1: type mismatch, expected string but got func(...): unknown', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['foldclosed("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['foldclosed(function("min"))'], ['E1013: Argument 1: type mismatch, expected string but got func(...): unknown', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['foldclosed("")'], 'E1209: Invalid value for a line number')
   assert_equal(-1, foldclosed(1))
   assert_equal(-1, foldclosed('$'))
 enddef
 
 def Test_foldclosedend()
-  v9.CheckDefAndScriptFailure(['foldclosedend(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['foldclosedend("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['foldclosedend(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['foldclosedend("")'], 'E1209: Invalid value for a line number')
   assert_equal(-1, foldclosedend(1))
   assert_equal(-1, foldclosedend('w0'))
 enddef
 
 def Test_foldlevel()
-  v9.CheckDefAndScriptFailure(['foldlevel(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['foldlevel("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['foldlevel(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['foldlevel("")'], 'E1209: Invalid value for a line number')
   assert_equal(0, foldlevel(1))
   assert_equal(0, foldlevel('.'))
 enddef
 
 def Test_foldtextresult()
-  v9.CheckDefAndScriptFailure(['foldtextresult(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['foldtextresult("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['foldtextresult(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['foldtextresult("")'], 'E1209: Invalid value for a line number')
   assert_equal('', foldtextresult(1))
   assert_equal('', foldtextresult('.'))
 enddef
@@ -1605,8 +1605,8 @@ def Test_fullcommand()
 enddef
 
 def Test_funcref()
-  v9.CheckDefAndScriptFailure(['funcref("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['funcref("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['funcref("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['funcref("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 
   var lines =<< trim END
       vim9script
@@ -1623,7 +1623,7 @@ def Test_funcref()
       defcompile
       GetRefOk()
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 
   lines =<< trim END
       vim9script
@@ -1635,14 +1635,14 @@ def Test_funcref()
       enddef
       GetRefBad()
   END
-  v9.CheckScriptFailure(lines, 'E1012: Type mismatch; expected func(number) but got func(bool)')
+  v9.CheckSourceScriptFailure(lines, 'E1012: Type mismatch; expected func(number) but got func(bool)')
 enddef
 
 def Test_function()
-  v9.CheckDefExecAndScriptFailure(['function(123)'], 'E1256: String or function required for argument 1')
+  v9.CheckSourceDefExecAndScriptFailure(['function(123)'], 'E1256: String or function required for argument 1')
 
-  v9.CheckDefAndScriptFailure(['function("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['function("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['function("reverse", 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['function("reverse", [2], [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 
   var lines =<< trim END
       vim9script
@@ -1659,7 +1659,7 @@ def Test_function()
       defcompile
       GetRefOk()
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 
   lines =<< trim END
       vim9script
@@ -1671,17 +1671,17 @@ def Test_function()
       enddef
       GetRefBad()
   END
-  v9.CheckScriptFailure(lines, 'E1012: Type mismatch; expected func(number) but got func(bool)')
+  v9.CheckSourceScriptFailure(lines, 'E1012: Type mismatch; expected func(number) but got func(bool)')
 enddef
 
 def Test_garbagecollect()
   garbagecollect(true)
-  v9.CheckDefAndScriptFailure(['garbagecollect("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['garbagecollect(20)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['garbagecollect("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['garbagecollect(20)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_get()
-  v9.CheckDefAndScriptFailure(['get("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E896: Argument of get() must be a List, Dictionary or Blob'])
+  v9.CheckSourceDefAndScriptFailure(['get("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E896: Argument of get() must be a List, Dictionary or Blob'])
   [3, 5, 2]->get(1)->assert_equal(5)
   [3, 5, 2]->get(3)->assert_equal(0)
   [3, 5, 2]->get(3, 9)->assert_equal(9)
@@ -1701,7 +1701,7 @@ def Test_get()
       enddef
       assert_equal(0, DoThat())
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 enddef
 
 def Test_getbufinfo()
@@ -1714,7 +1714,7 @@ def Test_getbufinfo()
   getbufinfo({bufloaded: true, buflisted: true, bufmodified: false})
       ->len()->assert_equal(3)
   bwipe Xtestfile1 Xtestfile2
-  v9.CheckDefAndScriptFailure(['getbufinfo(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getbufinfo(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
 enddef
 
 def Test_getbufline()
@@ -1738,17 +1738,17 @@ def Test_getbufline()
   assert_fails('getbufoneline("", "$a")', ['E1030: Using a String as a Number: "$a"', 'E1030: Using a String as a Number: "$a"'])
   bwipe!
 
-  v9.CheckDefAndScriptFailure(['getbufline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getbufline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['getbufline("a", 2, 0z10)'], ['E1013: Argument 3: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['getbufline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getbufline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getbufline("a", 2, 0z10)'], ['E1013: Argument 3: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 3'])
 
-  v9.CheckDefAndScriptFailure(['getbufoneline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getbufoneline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getbufoneline([], 2)'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getbufoneline("a", [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 2'])
 enddef
 
 def Test_getbufvar()
-  v9.CheckDefAndScriptFailure(['getbufvar(true, "v")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getbufvar(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getbufvar(true, "v")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getbufvar(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
 enddef
 
 def Test_getchangelist()
@@ -1764,21 +1764,21 @@ def Test_getchar()
   endwhile
   getchar(true)->assert_equal(0)
   getchar(1)->assert_equal(0)
-  v9.CheckDefAndScriptFailure(['getchar(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getchar("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getchar(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getchar("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_getcharpos()
   assert_equal(['x', 'x', 'x', 'x'], getcharpos('.')->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getcharpos(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getcharpos(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['getcharpos("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['getcharpos(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcharpos(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['getcharpos("")'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_getcharstr()
-  v9.CheckDefAndScriptFailure(['getcharstr(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getcharstr("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcharstr(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcharstr("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_getcompletion()
@@ -1786,29 +1786,29 @@ def Test_getcompletion()
   var l = getcompletion('run', 'file', true)
   l->assert_equal([])
   set wildignore&
-  v9.CheckDefAndScriptFailure(['getcompletion(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getcompletion("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['getcompletion("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['getcompletion("a", "")'], 'E475: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['getcompletion(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcompletion("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getcompletion("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['getcompletion("a", "")'], 'E475: Invalid argument')
   getcompletion('', 'messages')->assert_equal(['clear'])
 enddef
 
 def Test_getcurpos()
   assert_equal(['x', 'x', 'x', 'x', 'x'], getcurpos()->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getcurpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcurpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_getcursorcharpos()
   assert_equal(['x', 'x', 'x', 'x', 'x'], getcursorcharpos()->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getcursorcharpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcursorcharpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_getcwd()
-  v9.CheckDefAndScriptFailure(['getcwd("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getcwd("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getcwd(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getcwd("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcwd("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getcwd(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_getenv()
@@ -1827,7 +1827,7 @@ def Test_getenv()
 enddef
 
 def Test_getfontname()
-  v9.CheckDefAndScriptFailure(['getfontname(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getfontname(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   #getfontname('')->assert_equal('')
 enddef
 
@@ -1835,38 +1835,38 @@ def Test_getfperm()
   assert_equal('', getfperm(""))
   assert_equal('', getfperm(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo getfperm(true)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo getfperm(v:null)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getfperm(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getfperm(v:null)'], 'E1013:')
 enddef
 
 def Test_getfsize()
   assert_equal(-1, getfsize(""))
   assert_equal(-1, getfsize(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo getfsize(true)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo getfsize(v:null)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getfsize(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getfsize(v:null)'], 'E1013:')
 enddef
 
 def Test_getftime()
   assert_equal(-1, getftime(""))
   assert_equal(-1, getftime(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo getftime(true)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo getftime(v:null)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getftime(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getftime(v:null)'], 'E1013:')
 enddef
 
 def Test_getftype()
   assert_equal('', getftype(""))
   assert_equal('', getftype(test_null_string()))
 
-  v9.CheckDefExecFailure(['echo getftype(true)'], 'E1013:')
-  v9.CheckDefExecFailure(['echo getftype(v:null)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getftype(true)'], 'E1013:')
+  v9.CheckSourceDefExecFailure(['echo getftype(v:null)'], 'E1013:')
 enddef
 
 def Test_getjumplist()
-  v9.CheckDefAndScriptFailure(['getjumplist("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getjumplist("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getjumplist(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getjumplist("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getjumplist("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getjumplist(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_getline()
@@ -1882,20 +1882,20 @@ def Test_getline()
 
       assert_equal([3, 3, 3], getline(1, 3)->map((_, _) => 3))
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
       echo getline('1')
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1209:')
-  v9.CheckDefAndScriptFailure(['getline(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getline(1, true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['getline("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1209:')
+  v9.CheckSourceDefAndScriptFailure(['getline(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getline(1, true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['getline("")'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_getloclist()
-  v9.CheckDefAndScriptFailure(['getloclist("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getloclist(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getloclist("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getloclist(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_getloclist_return_type()
@@ -1907,26 +1907,26 @@ def Test_getloclist_return_type()
 enddef
 
 def Test_getmarklist()
-  v9.CheckDefAndScriptFailure(['getmarklist([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getmarklist([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
   assert_equal([], getmarklist(10000))
   assert_fails('getmarklist("a%b@#")', 'E94:')
 enddef
 
 def Test_getmatches()
-  v9.CheckDefAndScriptFailure(['getmatches("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getmatches("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_getpos()
   assert_equal(['x', 'x', 'x', 'x'], getpos('.')->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getpos(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getpos(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal([0, 1, 1, 0], getpos('.'))
-  v9.CheckDefExecFailure(['getpos("a")'], 'E1209:')
-  v9.CheckDefExecAndScriptFailure(['getpos("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecFailure(['getpos("a")'], 'E1209:')
+  v9.CheckSourceDefExecAndScriptFailure(['getpos("")'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_getqflist()
-  v9.CheckDefAndScriptFailure(['getqflist([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getqflist([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
   call assert_equal({}, getqflist({}))
 enddef
 
@@ -1945,9 +1945,9 @@ def Test_getreg()
   assert_equal([7, 7, 7], getreg('a', true, true)->map((_, _) => 7))
 
   assert_fails('getreg("ab")', 'E1162:')
-  v9.CheckDefAndScriptFailure(['getreg(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getreg(".", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['getreg(".", 1, "b")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['getreg(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getreg(".", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getreg(".", 1, "b")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
   @" = 'A1B2C3'
   getreg('')->assert_equal('A1B2C3')
 enddef
@@ -1977,7 +1977,7 @@ def Test_getregtype()
 enddef
 
 def Test_getscriptinfo()
-  v9.CheckDefAndScriptFailure(['getscriptinfo("x")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getscriptinfo("x")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 1'])
 
   var lines1 =<< trim END
     vim9script
@@ -2016,78 +2016,78 @@ def Test_getscriptinfo()
       assert_true(index(l[0].functions, f) != -1)
     endfor
   END
-  v9.CheckDefAndScriptSuccess(lines2)
+  v9.CheckSourceDefAndScriptSuccess(lines2)
 enddef
 
 def Test_gettabinfo()
-  v9.CheckDefAndScriptFailure(['gettabinfo("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['gettabinfo("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_gettabvar()
-  v9.CheckDefAndScriptFailure(['gettabvar("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['gettabvar(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['gettabvar("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['gettabvar(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
 enddef
 
 def Test_gettabwinvar()
-  v9.CheckDefAndScriptFailure(['gettabwinvar("a", 2, "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['gettabwinvar(1, "b", "c", [])'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['gettabwinvar(1, 1, 3, {})'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['gettabwinvar("a", 2, "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['gettabwinvar(1, "b", "c", [])'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['gettabwinvar(1, 1, 3, {})'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
 enddef
 
 def Test_gettagstack()
-  v9.CheckDefAndScriptFailure(['gettagstack("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['gettagstack("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_gettext()
-  v9.CheckDefAndScriptFailure(['gettext(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['gettext("")'], 'E1175: Non-empty string required for argument 1')
+  v9.CheckSourceDefAndScriptFailure(['gettext(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['gettext("")'], 'E1175: Non-empty string required for argument 1')
   assert_equal('abc', gettext("abc"))
   assert_fails('gettext("")', 'E1175:')
 enddef
 
 def Test_getwininfo()
-  v9.CheckDefAndScriptFailure(['getwininfo("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getwininfo("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_getwinpos()
   assert_equal(['x', 'x'], getwinpos()->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getwinpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getwinpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_getwinvar()
-  v9.CheckDefAndScriptFailure(['getwinvar("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['getwinvar(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['getwinvar("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['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'])
-  v9.CheckDefAndScriptFailure(['glob(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['glob("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['glob("a", 1, "b")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['glob("a", 1, true, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['glob(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['glob("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['glob("a", 1, "b")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['glob("a", 1, true, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
   glob('')->assert_equal('')
 enddef
 
 def Test_glob2regpat()
-  v9.CheckDefAndScriptFailure(['glob2regpat(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['glob2regpat(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1174: String required for argument 1'])
   glob2regpat('')->assert_equal('^$')
 enddef
 
 def Test_globpath()
   globpath('.', 'runtest.vim', true, true, true)->assert_equal(['./runtest.vim'])
-  v9.CheckDefAndScriptFailure(['globpath(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['globpath("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['globpath("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['globpath("a", "b", true, "d")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
-  v9.CheckDefAndScriptFailure(['globpath("a", "b", true, false, "e")'], ['E1013: Argument 5: type mismatch, expected bool but got string', 'E1212: Bool required for argument 5'])
+  v9.CheckSourceDefAndScriptFailure(['globpath(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['globpath("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['globpath("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['globpath("a", "b", true, "d")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['globpath("a", "b", true, false, "e")'], ['E1013: Argument 5: type mismatch, expected bool but got string', 'E1212: Bool required for argument 5'])
   globpath('', '')->assert_equal('')
 enddef
 
 def Test_has()
   has('eval', true)->assert_equal(1)
-  v9.CheckDefAndScriptFailure(['has(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['has("a", "b")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['has(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['has("a", "b")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
   has('')->assert_equal(0)
 enddef
 
@@ -2098,14 +2098,14 @@ def Test_has_key()
   assert_false(has_key(d, 'x'))
   assert_false(has_key(d, 99))
 
-  v9.CheckDefAndScriptFailure(['has_key([1, 2], "k")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['has_key({"a": 10}, ["a"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['has_key([1, 2], "k")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['has_key({"a": 10}, ["a"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 2'])
 enddef
 
 def Test_haslocaldir()
-  v9.CheckDefAndScriptFailure(['haslocaldir("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['haslocaldir("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['haslocaldir(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['haslocaldir("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['haslocaldir("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['haslocaldir(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_hasmapto()
@@ -2113,81 +2113,81 @@ def Test_hasmapto()
   iabbrev foo foobar
   hasmapto('foobar', 'i', true)->assert_equal(1)
   iunabbrev foo
-  v9.CheckDefAndScriptFailure(['hasmapto(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['hasmapto("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['hasmapto("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['hasmapto(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['hasmapto("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['hasmapto("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
   hasmapto('', '')->assert_equal(0)
 enddef
 
 def Test_histadd()
-  v9.CheckDefAndScriptFailure(['histadd(1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['histadd(":", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['histadd(1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['histadd(":", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   histadd("search", 'skyblue')
   assert_equal('skyblue', histget('/', -1))
   histadd("search", '')->assert_equal(0)
 enddef
 
 def Test_histdel()
-  v9.CheckDefAndScriptFailure(['histdel(1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['histdel(":", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['histdel(1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['histdel(":", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
   histdel('search', '')->assert_equal(0)
 enddef
 
 def Test_histget()
-  v9.CheckDefAndScriptFailure(['histget(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['histget("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['histget(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['histget("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_histnr()
-  v9.CheckDefAndScriptFailure(['histnr(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['histnr(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal(-1, histnr('abc'))
 enddef
 
 def Test_hlID()
-  v9.CheckDefAndScriptFailure(['hlID(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['hlID(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal(0, hlID('NonExistingHighlight'))
   hlID('')->assert_equal(0)
 enddef
 
 def Test_hlexists()
-  v9.CheckDefAndScriptFailure(['hlexists([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['hlexists([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
   assert_equal(0, hlexists('NonExistingHighlight'))
   hlexists('')->assert_equal(0)
 enddef
 
 def Test_hlget()
-  v9.CheckDefAndScriptFailure(['hlget([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['hlget([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
   hlget('')->assert_equal([])
 enddef
 
 def Test_hlset()
-  v9.CheckDefAndScriptFailure(['hlset("id")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['hlset("id")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
   hlset([])->assert_equal(0)
 enddef
 
 def Test_iconv()
-  v9.CheckDefAndScriptFailure(['iconv(1, "from", "to")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['iconv("abc", 10, "to")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['iconv("abc", "from", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['iconv(1, "from", "to")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['iconv("abc", 10, "to")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['iconv("abc", "from", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   assert_equal('abc', iconv('abc', 'fromenc', 'toenc'))
   iconv('', '', '')->assert_equal('')
 enddef
 
 def Test_indent()
-  v9.CheckDefAndScriptFailure(['indent([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['indent(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['indent("")'], 'E1209: Invalid value for a line number')
-  v9.CheckDefExecAndScriptFailure(['indent(-1)'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefAndScriptFailure(['indent([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['indent(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['indent("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(['indent(-1)'], 'E966: Invalid line number: -1')
   assert_equal(0, indent(1))
 enddef
 
 def Test_index()
   index(['a', 'b', 'a', 'B'], 'b', 2, true)->assert_equal(3)
-  v9.CheckDefAndScriptFailure(['index("a", "a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1226: List or Blob required for argument 1'])
-  v9.CheckDefFailure(['index(["1"], 1)'], 'E1013: Argument 2: type mismatch, expected string but got number')
-  v9.CheckDefAndScriptFailure(['index(0z10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['index([1], 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['index(0z1020, 10, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['index("a", "a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1226: List or Blob required for argument 1'])
+  v9.CheckSourceDefFailure(['index(["1"], 1)'], 'E1013: Argument 2: type mismatch, expected string but got number')
+  v9.CheckSourceDefAndScriptFailure(['index(0z10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['index([1], 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['index(0z1020, 10, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
 enddef
 
 def Test_indexof()
@@ -2210,7 +2210,7 @@ def Test_indexof()
 
     indexof([{color: "red"}], TestIdx)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E176: Invalid number of arguments', 'E118: Too many arguments for function'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E176: Invalid number of arguments', 'E118: Too many arguments for function'])
 
   lines =<< trim END
     def TestIdx(k: number, v: dict<any>)
@@ -2218,7 +2218,7 @@ def Test_indexof()
 
     indexof([{color: "red"}], TestIdx)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool', 'E1031: Cannot use void value'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool', 'E1031: Cannot use void value'])
 
   lines =<< trim END
     def TestIdx(k: number, v: dict<any>): string
@@ -2227,35 +2227,35 @@ def Test_indexof()
 
     indexof([{color: "red"}], TestIdx)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool', 'E1135: Using a String as a Bool'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?any): bool', 'E1135: Using a String as a Bool'])
 enddef
 
 def Test_input()
-  v9.CheckDefAndScriptFailure(['input(5)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['input(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['input("p", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['input("p", "q", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['input(5)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['input(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['input("p", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['input("p", "q", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
 enddef
 
 def Test_inputdialog()
-  v9.CheckDefAndScriptFailure(['inputdialog(5)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['inputdialog(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['inputdialog("p", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['inputdialog("p", "q", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['inputdialog(5)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['inputdialog(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['inputdialog("p", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['inputdialog("p", "q", 20)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
 enddef
 
 def Test_inputlist()
-  v9.CheckDefAndScriptFailure(['inputlist(10)'], ['E1013: Argument 1: type mismatch, expected list<string> but got number', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['inputlist("abc")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['inputlist([1, 2, 3])'], 'E1013: Argument 1: type mismatch, expected list<string> but got list<number>')
+  v9.CheckSourceDefAndScriptFailure(['inputlist(10)'], ['E1013: Argument 1: type mismatch, expected list<string> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['inputlist("abc")'], ['E1013: Argument 1: type mismatch, expected list<string> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['inputlist([1, 2, 3])'], 'E1013: Argument 1: type mismatch, expected list<string> but got list<number>')
   feedkeys("2\<CR>", 't')
   var r: number = inputlist(['a', 'b', 'c'])
   assert_equal(2, r)
 enddef
 
 def Test_inputsecret()
-  v9.CheckDefAndScriptFailure(['inputsecret(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['inputsecret("Pass:", 20)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['inputsecret(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['inputsecret("Pass:", 20)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   feedkeys("\<CR>", 't')
   var ans: string = inputsecret('Pass:', '123')
   assert_equal('123', ans)
@@ -2282,12 +2282,12 @@ def Test_insert()
   var lines =<< trim END
       insert(test_null_list(), 123)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1130:', 1)
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1130:', 1)
 
   lines =<< trim END
       insert(test_null_blob(), 123)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1131:', 1)
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1131:', 1)
 
   assert_equal([1, 2, 3], insert([2, 3], 1))
   assert_equal([1, 2, 3], insert([2, 3], number_one))
@@ -2296,9 +2296,9 @@ def Test_insert()
   assert_equal(['a', 'b', 'c'], insert(['b', 'c'], 'a'))
   assert_equal(0z1234, insert(0z34, 0x12))
 
-  v9.CheckDefAndScriptFailure(['insert("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1226: List or Blob required for argument 1'])
-  v9.CheckDefFailure(['insert([2, 3], "a")'], 'E1013: Argument 2: type mismatch, expected number but got string')
-  v9.CheckDefAndScriptFailure(['insert([2, 3], 1, "x")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['insert("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1226: List or Blob required for argument 1'])
+  v9.CheckSourceDefFailure(['insert([2, 3], "a")'], 'E1013: Argument 2: type mismatch, expected number but got string')
+  v9.CheckSourceDefAndScriptFailure(['insert([2, 3], 1, "x")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
 enddef
 
 def Test_instanceof()
@@ -2308,7 +2308,7 @@ def Test_instanceof()
     endclass
     instanceof('hello', Foo)
   END
-  v9.CheckScriptFailure(lines, 'E616: Object required for argument 1')
+  v9.CheckSourceScriptFailure(lines, 'E616: Object required for argument 1')
 
   lines =<< trim END
     vim9script
@@ -2316,7 +2316,7 @@ def Test_instanceof()
     endclass
     instanceof(Foo.new(), 123)
   END
-  v9.CheckScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
+  v9.CheckSourceScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
 
   lines =<< trim END
     vim9script
@@ -2327,7 +2327,7 @@ def Test_instanceof()
     enddef
     Bar()
   END
-  v9.CheckScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected object<Unknown> but got string')
+  v9.CheckSourceScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected object<Unknown> but got string')
 
   lines =<< trim END
     vim9script
@@ -2338,7 +2338,7 @@ def Test_instanceof()
     enddef
     Bar()
   END
-  v9.CheckScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
+  v9.CheckSourceScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
 
   lines =<< trim END
     vim9script
@@ -2346,7 +2346,7 @@ def Test_instanceof()
     endclass
     instanceof(Foo.new(), [{}])
   END
-  v9.CheckSourceFailure(lines, 'E693: Class or class typealias required for argument 2')
+  v9.CheckSourceScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
 
   lines =<< trim END
     vim9script
@@ -2357,22 +2357,22 @@ def Test_instanceof()
     enddef
     Bar()
   END
-  v9.CheckSourceFailure(lines, 'E693: Class or class typealias required for argument 2')
+  v9.CheckSourceScriptFailure(lines, 'E693: Class or class typealias required for argument 2')
 enddef
 
 def Test_invert()
-  v9.CheckDefAndScriptFailure(['invert("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['invert("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_isdirectory()
-  v9.CheckDefAndScriptFailure(['isdirectory(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['isdirectory(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1174: String required for argument 1'])
   assert_false(isdirectory('NonExistingDir'))
   assert_false(isdirectory(''))
 enddef
 
 def Test_islocked()
-  v9.CheckDefAndScriptFailure(['islocked(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['var n1: number = 10', 'islocked(n1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['islocked(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['var n1: number = 10', 'islocked(n1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   g:v1 = 10
   assert_false(islocked('g:v1'))
   lockvar g:v1
@@ -2382,7 +2382,7 @@ def Test_islocked()
 enddef
 
 def Test_items()
-  v9.CheckDefFailure(['123->items()'], 'E1225:')
+  v9.CheckSourceDefFailure(['123->items()'], 'E1225:')
   assert_equal([['a', 10], ['b', 20]], {'a': 10, 'b': 20}->items())
   assert_equal([], {}->items())
   assert_equal(['x', 'x'], {'a': 10, 'b': 20}->items()->map((_, _) => 'x'))
@@ -2400,7 +2400,7 @@ def Test_job_getchannel()
   if !has('job')
     CheckFeature job
   else
-    v9.CheckDefAndScriptFailure(['job_getchannel("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['job_getchannel("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
     assert_fails('job_getchannel(test_null_job())', 'E916: Not a valid job')
   endif
 enddef
@@ -2409,7 +2409,7 @@ def Test_job_info()
   if !has('job')
     CheckFeature job
   else
-    v9.CheckDefAndScriptFailure(['job_info("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['job_info("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
     assert_fails('job_info(test_null_job())', 'E916: Not a valid job')
   endif
 enddef
@@ -2420,8 +2420,8 @@ def Test_job_setoptions()
   if !has('job')
     CheckFeature job
   else
-    v9.CheckDefAndScriptFailure(['job_setoptions(test_null_channel(), {})'], ['E1013: Argument 1: type mismatch, expected job but got channel', 'E1218: Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['job_setoptions(test_null_job(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['job_setoptions(test_null_channel(), {})'], ['E1013: Argument 1: type mismatch, expected job but got channel', 'E1218: Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['job_setoptions(test_null_job(), [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
     assert_equal('fail', job_status(test_null_job()))
   endif
 enddef
@@ -2430,7 +2430,7 @@ def Test_job_status()
   if !has('job')
     CheckFeature job
   else
-    v9.CheckDefAndScriptFailure(['job_status("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['job_status("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
     assert_equal('fail', job_status(test_null_job()))
   endif
 enddef
@@ -2439,25 +2439,25 @@ def Test_job_stop()
   if !has('job')
     CheckFeature job
   else
-    v9.CheckDefAndScriptFailure(['job_stop("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
-    v9.CheckDefAndScriptFailure(['job_stop(test_null_job(), true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['job_stop("a")'], ['E1013: Argument 1: type mismatch, expected job but got string', 'E1218: Job required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['job_stop(test_null_job(), true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
   endif
 enddef
 
 def Test_join()
-  v9.CheckDefAndScriptFailure(['join("abc")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['join([], 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['join("abc")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['join([], 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   join([''], '')->assert_equal('')
 enddef
 
 def Test_js_decode()
-  v9.CheckDefAndScriptFailure(['js_decode(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['js_decode(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal([1, 2], js_decode('[1,2]'))
   js_decode('')->assert_equal(v:none)
 enddef
 
 def Test_json_decode()
-  v9.CheckDefAndScriptFailure(['json_decode(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['json_decode(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1174: String required for argument 1'])
   assert_equal(1.0, json_decode('1.0'))
   json_decode('')->assert_equal(v:none)
 enddef
@@ -2465,7 +2465,7 @@ enddef
 def Test_keys()
   assert_equal([7, 7], keys({a: 1, b: 2})->map((_, _) => 7))
 
-  v9.CheckDefAndScriptFailure(['keys([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['keys([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
   assert_equal(['a'], {a: 'v'}->keys())
   assert_equal([], {}->keys())
 enddef
@@ -2476,7 +2476,7 @@ def Test_keys_return_type()
 enddef
 
 def Test_len()
-  v9.CheckDefAndScriptFailure(['len(true)'], ['E1013: Argument 1: type mismatch, expected list<any> but got bool', 'E701: Invalid type for len()'])
+  v9.CheckSourceDefAndScriptFailure(['len(true)'], ['E1013: Argument 1: type mismatch, expected list<any> but got bool', 'E701: Invalid type for len()'])
   assert_equal(2, "ab"->len())
   assert_equal(3, 456->len())
   assert_equal(0, []->len())
@@ -2486,42 +2486,42 @@ enddef
 
 def Test_libcall()
   CheckFeature libcall
-  v9.CheckDefAndScriptFailure(['libcall(1, "b", 3)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['libcall("a", 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['libcall("a", "b", 1.1)'], ['E1013: Argument 3: type mismatch, expected string but got float', 'E1220: String or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['libcall(1, "b", 3)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['libcall("a", 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['libcall("a", "b", 1.1)'], ['E1013: Argument 3: type mismatch, expected string but got float', 'E1220: String or Number required for argument 3'])
 enddef
 
 def Test_libcallnr()
   CheckFeature libcall
-  v9.CheckDefAndScriptFailure(['libcallnr(1, "b", 3)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['libcallnr("a", 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['libcallnr("a", "b", 1.1)'], ['E1013: Argument 3: type mismatch, expected string but got float', 'E1220: String or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['libcallnr(1, "b", 3)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['libcallnr("a", 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['libcallnr("a", "b", 1.1)'], ['E1013: Argument 3: type mismatch, expected string but got float', 'E1220: String or Number required for argument 3'])
 enddef
 
 def Test_line()
   assert_fails('line(true)', 'E1174:')
-  v9.CheckDefAndScriptFailure(['line(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['line(".", "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['line("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['line(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['line(".", "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['line("")'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_line2byte()
-  v9.CheckDefAndScriptFailure(['line2byte(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['line2byte("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['line2byte(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['line2byte("")'], 'E1209: Invalid value for a line number')
   assert_equal(-1, line2byte(1))
   assert_equal(-1, line2byte(10000))
 enddef
 
 def Test_lispindent()
-  v9.CheckDefAndScriptFailure(['lispindent({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['lispindent("")'], 'E1209: Invalid value for a line number')
-  v9.CheckDefExecAndScriptFailure(['lispindent(-1)'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefAndScriptFailure(['lispindent({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['lispindent("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(['lispindent(-1)'], 'E966: Invalid line number: -1')
   assert_equal(0, lispindent(1))
 enddef
 
 def Test_list2blob()
-  v9.CheckDefAndScriptFailure(['list2blob(10)'], ['E1013: Argument 1: type mismatch, expected list<number> but got number', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['list2blob([0z10, 0z02])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<blob>')
+  v9.CheckSourceDefAndScriptFailure(['list2blob(10)'], ['E1013: Argument 1: type mismatch, expected list<number> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['list2blob([0z10, 0z02])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<blob>')
 enddef
 
 def Test_list2str_str2list_utf8()
@@ -2532,8 +2532,8 @@ def Test_list2str_str2list_utf8()
 enddef
 
 def Test_list2str()
-  v9.CheckDefAndScriptFailure(['list2str(".", true)'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['list2str([1], 0z10)'], ['E1013: Argument 2: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['list2str(".", true)'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['list2str([1], 0z10)'], ['E1013: Argument 2: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 2'])
 enddef
 
 def s:SID(): number
@@ -2543,22 +2543,22 @@ def s:SID(): number
 enddef
 
 def Test_listener_add()
-  v9.CheckDefAndScriptFailure(['listener_add("1", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['listener_add("1", true)'], ['E1013: Argument 2: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 2'])
 enddef
 
 def Test_listener_flush()
-  v9.CheckDefAndScriptFailure(['listener_flush([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['listener_flush([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_listener_remove()
-  v9.CheckDefAndScriptFailure(['listener_remove("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['listener_remove("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_luaeval()
   if !has('lua')
     CheckFeature lua
   endif
-  v9.CheckDefAndScriptFailure(['luaeval(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['luaeval(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   if exists_compiled('*luaeval')
     luaeval('')->assert_equal(v:null)
   endif
@@ -2566,10 +2566,10 @@ enddef
 
 def Test_map()
   if has('channel')
-    v9.CheckDefAndScriptFailure(['map(test_null_channel(), "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got channel', 'E1251: List, Dictionary, Blob or String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['map(test_null_channel(), "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got channel', 'E1251: List, Dictionary, Blob or String required for argument 1'])
   endif
-  v9.CheckDefAndScriptFailure(['map(1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1251: List, Dictionary, Blob or String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['map([1, 2], 4)'], ['E1256: String or function required for argument 2', 'E1024: Using a Number as a String'])
+  v9.CheckSourceDefAndScriptFailure(['map(1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1251: List, Dictionary, Blob or String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['map([1, 2], 4)'], ['E1256: String or function required for argument 2', 'E1024: Using a Number as a String'])
 
   # type of dict remains dict<any> even when type of values changes
   # same for list
@@ -2599,7 +2599,7 @@ def Test_map()
       assert_equal({a: 'x'}, {a: [1, 2]}->map((_, v) => 'x'))
       assert_equal({a: 'x'}, {a: {b: 2}}->map((_, v) => 'x'))
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_map_failure()
@@ -2627,7 +2627,7 @@ def Test_map_failure()
       g:gd = d
       map(g:gd, (k, v) => true)
   END
-  v9.CheckDefExecAndScriptFailure(lines, 'E1012: Type mismatch; expected number but got bool')
+  v9.CheckSourceDefExecAndScriptFailure(lines, 'E1012: Type mismatch; expected number but got bool')
 enddef
 
 def Test_map_const()
@@ -2635,13 +2635,13 @@ def Test_map_const()
       const l = [1, 2, 3]
       map(l, 'SomeFunc')
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       const d = {a: 1, b: 2}
       map(d, 'SomeFunc')
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
 enddef
 
 def Test_map_function_arg()
@@ -2653,16 +2653,16 @@ def Test_map_function_arg()
       map(l, MapOne)
       assert_equal(['0:a', '1:b', '2:c'], l)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
       range(3)->map((a, b, c) => a + b + c)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E176:', 'E1190: One argument too few'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E176:', 'E1190: One argument too few'])
   lines =<< trim END
       range(3)->map((a, b, c, d) => a + b + c + d)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E176:', 'E1190: 2 arguments too few'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E176:', 'E1190: 2 arguments too few'])
 
   # declared list cannot change type
   lines =<< trim END
@@ -2672,7 +2672,7 @@ def Test_map_function_arg()
     var ll: list<number> = [1, 2, 3]
     echo map(ll, Map)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, number): string', 'E1012: Type mismatch; expected number but got string'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, number): string', 'E1012: Type mismatch; expected number but got string'])
 
   # not declared list can change type
   echo [1, 2, 3]->map((..._) => 'x')
@@ -2684,25 +2684,25 @@ def Test_map_item_type()
       map(l, (k, v) => k .. '/' .. v )
       assert_equal(['0/a', '1/b', '2/c'], l)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
     var l: list<number> = [0]
     echo map(l, (_, v) => [])
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
 
   lines =<< trim END
     var l: list<number> = range(2)
     echo map(l, (_, v) => [])
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
 
   lines =<< trim END
     var d: dict<number> = {key: 0}
     echo map(d, (_, v) => [])
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?number): number but got func(any, any): list<any>', 'E1012: Type mismatch; expected number but got list<any>'], 2)
 enddef
 
 def Test_maparg()
@@ -2725,10 +2725,10 @@ def Test_maparg()
         abbr: 0,
         mode_bits: 0x47})
   unmap foo
-  v9.CheckDefAndScriptFailure(['maparg(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['maparg("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['maparg("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['maparg("a", "b", true, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['maparg(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['maparg("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['maparg("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['maparg("a", "b", true, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
   maparg('')->assert_equal('')
 
   # value argument type is checked at compile time
@@ -2736,46 +2736,46 @@ def Test_maparg()
       var l = [123]
       l->map((i: number, v: string) => 0)
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, string): number')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, string): number')
 
   lines =<< trim END
       var d = {a: 123}
       d->map((i: string, v: string) => 0)
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?string, ?number): number but got func(string, string): number')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?string, ?number): number but got func(string, string): number')
 
   lines =<< trim END
     var s = 'abc'
     s->map((i: number, v: number) => 'x')
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?string): string but got func(number, number): string')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?string): string but got func(number, number): string')
 
   lines =<< trim END
     var s = 0z1122
     s->map((i: number, v: string) => 0)
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, string): number')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, string): number')
 
   # index argument type is checked at compile time
   lines =<< trim END
       ['x']->map((i: string, v: string) => 'y')
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?any): any but got func(string, string): string')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?any): any but got func(string, string): string')
 
   lines =<< trim END
     {a: 1}->map((i: number, v: number) => 0)
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?string, ?any): any but got func(number, number): number')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?string, ?any): any but got func(number, number): number')
 
   lines =<< trim END
     'abc'->map((i: string, v: string) => 'x')
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?string): string but got func(string, string): string')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?string): string but got func(string, string): string')
 
   lines =<< trim END
     0z1122->map((i: string, v: number) => 0)
   END
-  v9.CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(string, number): number')
+  v9.CheckSourceDefFailure(lines, 'E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(string, number): number')
 enddef
 
 def Test_maparg_mapset()
@@ -2790,31 +2790,31 @@ def Test_mapcheck()
   iabbrev foo foobar
   mapcheck('foo', 'i', true)->assert_equal('foobar')
   iunabbrev foo
-  v9.CheckDefAndScriptFailure(['mapcheck(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['mapcheck("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['mapcheck("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['mapcheck(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mapcheck("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['mapcheck("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
   mapcheck('')->assert_equal('')
   mapcheck('', '')->assert_equal('')
 enddef
 
 def Test_mapnew()
   if has('channel')
-    v9.CheckDefAndScriptFailure(['mapnew(test_null_job(), "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got job', 'E1251: List, Dictionary, Blob or String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['mapnew(test_null_job(), "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got job', 'E1251: List, Dictionary, Blob or String required for argument 1'])
   endif
-  v9.CheckDefAndScriptFailure(['mapnew(1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1251: List, Dictionary, Blob or String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mapnew(1, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1251: List, Dictionary, Blob or String required for argument 1'])
 enddef
 
 def Test_mapset()
-  v9.CheckDefAndScriptFailure(['mapset(1, true, {})'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1223: String or Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['mapset("a", 2, {})'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['mapset("a", false, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['mapset(1, true, {})'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1223: String or Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mapset("a", 2, {})'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['mapset("a", false, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_match()
-  v9.CheckDefAndScriptFailure(['match(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['match(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['match("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['match("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['match(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['match(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['match("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['match("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   assert_equal(2, match('ab12cd', '12'))
   assert_equal(-1, match('ab12cd', '34'))
   assert_equal(6, match('ab12cd12ef', '12', 4))
@@ -2829,39 +2829,39 @@ def Test_match()
 enddef
 
 def Test_matchadd()
-  v9.CheckDefAndScriptFailure(['matchadd(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchadd("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchadd("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchadd("a", "b", 1, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
-  v9.CheckDefAndScriptFailure(['matchadd("a", "b", 1, 1, [])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 5'])
+  v9.CheckSourceDefAndScriptFailure(['matchadd(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchadd("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchadd("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchadd("a", "b", 1, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchadd("a", "b", 1, 1, [])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 5'])
   matchadd('', 'a')->assert_equal(-1)
   matchadd('Search', '')->assert_equal(-1)
 enddef
 
 def Test_matchaddpos()
-  v9.CheckDefAndScriptFailure(['matchaddpos(1, [1])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchaddpos("a", "b")'], ['E1013: Argument 2: type mismatch, expected list<any> but got string', 'E1211: List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchaddpos("a", [1], "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchaddpos("a", [1], 1, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
-  v9.CheckDefAndScriptFailure(['matchaddpos("a", [1], 1, 1, [])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 5'])
+  v9.CheckSourceDefAndScriptFailure(['matchaddpos(1, [1])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchaddpos("a", "b")'], ['E1013: Argument 2: type mismatch, expected list<any> but got string', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchaddpos("a", [1], "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchaddpos("a", [1], 1, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchaddpos("a", [1], 1, 1, [])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 5'])
   matchaddpos('', [1])->assert_equal(-1)
 enddef
 
 def Test_matcharg()
-  v9.CheckDefAndScriptFailure(['matcharg("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matcharg("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_matchdelete()
-  v9.CheckDefAndScriptFailure(['matchdelete("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchdelete("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchdelete(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchdelete("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchdelete("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchdelete(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_matchend()
-  v9.CheckDefAndScriptFailure(['matchend(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchend(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchend("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchend("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchend(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchend(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchend("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchend("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   assert_equal(4, matchend('ab12cd', '12'))
   assert_equal(-1, matchend('ab12cd', '34'))
   assert_equal(8, matchend('ab12cd12ef', '12', 4))
@@ -2876,9 +2876,9 @@ def Test_matchend()
 enddef
 
 def Test_matchfuzzy()
-  v9.CheckDefAndScriptFailure(['matchfuzzy({}, "p")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchfuzzy([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchfuzzy([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzy({}, "p")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzy([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzy([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   matchfuzzy(['abc', 'xyz'], '')->assert_equal([])
   var lines =<< trim END
     var items = [{name: 'xyz', id: 1}, {name: 'def', id: 2},
@@ -2888,13 +2888,13 @@ def Test_matchfuzzy()
     var k: list<string> = matchfuzzy(['one', 'two', 'who'], 'o')
     assert_equal(['one', 'two', 'who'], k)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_matchfuzzypos()
-  v9.CheckDefAndScriptFailure(['matchfuzzypos({}, "p")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchfuzzypos([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchfuzzypos([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzypos({}, "p")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzypos([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchfuzzypos([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
   matchfuzzypos(['abc', 'xyz'], '')->assert_equal([[], [], []])
   var lines =<< trim END
     var items = [{name: 'xyz', id: 1}, {name: 'def', id: 2},
@@ -2904,14 +2904,14 @@ def Test_matchfuzzypos()
     var k: list<string> = matchfuzzypos(['one', 'two', 'who'], 'o')[0]
     assert_equal(['one', 'two', 'who'], k)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_matchlist()
-  v9.CheckDefAndScriptFailure(['matchlist(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchlist(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchlist("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchlist("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchlist(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchlist(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchlist("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchlist("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   var l: list<string> = ['12',  '', '', '', '', '', '', '', '', '']
   assert_equal(l, matchlist('ab12cd', '12'))
   assert_equal([], matchlist('ab12cd', '34'))
@@ -2929,10 +2929,10 @@ def Test_matchlist()
 enddef
 
 def Test_matchstr()
-  v9.CheckDefAndScriptFailure(['matchstr(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchstr(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchstr("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchstr("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchstr(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchstr(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchstr("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchstr("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   assert_equal('12', matchstr('ab12cd', '12'))
   assert_equal('', matchstr('ab12cd', '34'))
   assert_equal('12', matchstr('ab12cd12ef', '12', 4))
@@ -2947,10 +2947,10 @@ def Test_matchstr()
 enddef
 
 def Test_matchstrpos()
-  v9.CheckDefAndScriptFailure(['matchstrpos(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['matchstrpos(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['matchstrpos("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['matchstrpos("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['matchstrpos(0z12, "p")'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['matchstrpos(["s"], [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['matchstrpos("s", "p", "q")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['matchstrpos("s", "p", 1, "r")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   assert_equal(['12', 2, 4], matchstrpos('ab12cd', '12'))
   assert_equal(['', -1, -1], matchstrpos('ab12cd', '34'))
   assert_equal(['12', 6, 8], matchstrpos('ab12cd12ef', '12', 4))
@@ -2978,13 +2978,13 @@ def Test_max()
           ? [1, max([2, 3])]
           : [4, 5]
   assert_equal([4, 5], l2)
-  v9.CheckDefAndScriptFailure(['max(5)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1227: List or Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['max(5)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1227: List or Dictionary required for argument 1'])
 enddef
 
 def Test_menu_info()
-  v9.CheckDefAndScriptFailure(['menu_info(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['menu_info(10, "n")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['menu_info("File", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['menu_info(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['menu_info(10, "n")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['menu_info("File", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   assert_equal({}, menu_info('aMenu'))
 enddef
 
@@ -3000,49 +3000,49 @@ def Test_min()
           ? [1, min([2, 3])]
           : [4, 5]
   assert_equal([4, 5], l2)
-  v9.CheckDefAndScriptFailure(['min(5)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1227: List or Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['min(5)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1227: List or Dictionary required for argument 1'])
 enddef
 
 def Test_mkdir()
-  v9.CheckDefAndScriptFailure(['mkdir(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['mkdir("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['mkdir("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['mkdir("")'], 'E1175: Non-empty string required for argument 1')
+  v9.CheckSourceDefAndScriptFailure(['mkdir(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mkdir("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['mkdir("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['mkdir("")'], 'E1175: Non-empty string required for argument 1')
   delete('a', 'rf')
 enddef
 
 def Test_mode()
-  v9.CheckDefAndScriptFailure(['mode("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['mode(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mode("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mode(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_mzeval()
   if !has('mzscheme')
     CheckFeature mzscheme
   endif
-  v9.CheckDefAndScriptFailure(['mzeval(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['mzeval(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_nextnonblank()
-  v9.CheckDefAndScriptFailure(['nextnonblank(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['nextnonblank("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['nextnonblank(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['nextnonblank("")'], 'E1209: Invalid value for a line number')
   assert_equal(0, nextnonblank(1))
 enddef
 
 def Test_nr2char()
   nr2char(97, true)->assert_equal('a')
-  v9.CheckDefAndScriptFailure(['nr2char("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['nr2char(1, "a")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['nr2char("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['nr2char(1, "a")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
 enddef
 
 def Test_or()
-  v9.CheckDefAndScriptFailure(['or("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['or(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['or("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['or(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_pathshorten()
-  v9.CheckDefAndScriptFailure(['pathshorten(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['pathshorten("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['pathshorten(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['pathshorten("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
   pathshorten('')->assert_equal('')
 enddef
 
@@ -3050,12 +3050,12 @@ def Test_perleval()
   if !has('perl')
     CheckFeature perl
   endif
-  v9.CheckDefAndScriptFailure(['perleval(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['perleval(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_popup_atcursor()
-  v9.CheckDefAndScriptFailure(['popup_atcursor({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_atcursor("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_atcursor({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_atcursor("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
 
   # Pass variable of type 'any' to popup_atcursor()
   var what: any = 'Hello'
@@ -3065,17 +3065,17 @@ def Test_popup_atcursor()
 enddef
 
 def Test_popup_beval()
-  v9.CheckDefAndScriptFailure(['popup_beval({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_beval("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_beval({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_beval("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_clear()
-  v9.CheckDefAndScriptFailure(['popup_clear(["a"])'], ['E1013: Argument 1: type mismatch, expected bool but got list<string>', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_clear(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_clear(["a"])'], ['E1013: Argument 1: type mismatch, expected bool but got list<string>', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_clear(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_popup_close()
-  v9.CheckDefAndScriptFailure(['popup_close("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_close("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_popup_create()
@@ -3087,81 +3087,81 @@ def Test_popup_create()
 enddef
 
 def Test_popup_dialog()
-  v9.CheckDefAndScriptFailure(['popup_dialog({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_dialog("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_dialog({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_dialog("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_filter_menu()
-  v9.CheckDefAndScriptFailure(['popup_filter_menu("x", "")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_filter_menu(1, 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_filter_menu("x", "")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_filter_menu(1, 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   var id: number = popup_menu(["one", "two", "three"], {})
   popup_filter_menu(id, '')
   popup_close(id)
 enddef
 
 def Test_popup_filter_yesno()
-  v9.CheckDefAndScriptFailure(['popup_filter_yesno("x", "")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_filter_yesno(1, 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_filter_yesno("x", "")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_filter_yesno(1, 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
 enddef
 
 def Test_popup_getoptions()
-  v9.CheckDefAndScriptFailure(['popup_getoptions("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_getoptions(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_getoptions("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_getoptions(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_popup_getpos()
-  v9.CheckDefAndScriptFailure(['popup_getpos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_getpos(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_getpos("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_getpos(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_popup_hide()
-  v9.CheckDefAndScriptFailure(['popup_hide("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_hide(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_hide("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_hide(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_popup_locate()
-  v9.CheckDefAndScriptFailure(['popup_locate("a", 20)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_locate(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_locate("a", 20)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_locate(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_popup_menu()
-  v9.CheckDefAndScriptFailure(['popup_menu({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_menu("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_menu({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_menu("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_move()
-  v9.CheckDefAndScriptFailure(['popup_move("x", {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_move(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_move("x", {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_move(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_notification()
-  v9.CheckDefAndScriptFailure(['popup_notification({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_notification("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_notification({"a": 10}, {})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_notification("a", [1, 2])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_setoptions()
-  v9.CheckDefAndScriptFailure(['popup_setoptions("x", {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_setoptions(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_setoptions("x", {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_setoptions(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_popup_settext()
-  v9.CheckDefAndScriptFailure(['popup_settext("x", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_settext(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1222: String or List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['popup_settext("x", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_settext(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1222: String or List required for argument 2'])
 enddef
 
 def Test_popup_show()
-  v9.CheckDefAndScriptFailure(['popup_show("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['popup_show(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_show("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['popup_show(true)'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_prevnonblank()
-  v9.CheckDefAndScriptFailure(['prevnonblank(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['prevnonblank("")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['prevnonblank(null)'], ['E1013: Argument 1: type mismatch, expected string but got special', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['prevnonblank("")'], 'E1209: Invalid value for a line number')
   assert_equal(0, prevnonblank(1))
 enddef
 
 def Test_printf()
-  v9.CheckDefAndScriptFailure(['printf([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['printf([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
   printf(0x10)->assert_equal('16')
   assert_equal(" abc", "abc"->printf("%4s"))
 enddef
@@ -3170,7 +3170,7 @@ def Test_prompt_getprompt()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['prompt_getprompt([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['prompt_getprompt([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
     assert_equal('', prompt_getprompt('NonExistingBuf'))
   endif
 enddef
@@ -3179,7 +3179,7 @@ def Test_prompt_setcallback()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['prompt_setcallback(true, "1")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['prompt_setcallback(true, "1")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
   endif
 enddef
 
@@ -3187,7 +3187,7 @@ def Test_prompt_setinterrupt()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['prompt_setinterrupt(true, "1")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['prompt_setinterrupt(true, "1")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
   endif
 enddef
 
@@ -3195,109 +3195,109 @@ def Test_prompt_setprompt()
   if !has('channel')
     CheckFeature channel
   else
-    v9.CheckDefAndScriptFailure(['prompt_setprompt([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-    v9.CheckDefAndScriptFailure(['prompt_setprompt(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['prompt_setprompt([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['prompt_setprompt(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
   endif
 enddef
 
 def Test_prop_add()
-  v9.CheckDefAndScriptFailure(['prop_add("a", 2, {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_add(1, "b", {})'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['prop_add(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['prop_add("a", 2, {})'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_add(1, "b", {})'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_add(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_prop_add_list()
-  v9.CheckDefAndScriptFailure(['prop_add_list([], [])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_add_list({}, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_add_list([], [])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_add_list({}, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
 enddef
 
 def Test_prop_clear()
-  v9.CheckDefAndScriptFailure(['prop_clear("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_clear(1, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['prop_clear(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['prop_clear("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_clear(1, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_clear(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_prop_find()
-  v9.CheckDefAndScriptFailure(['prop_find([1, 2])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_find([1, 2], "k")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_find({"a": 10}, ["a"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_find([1, 2])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_find([1, 2], "k")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_find({"a": 10}, ["a"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1174: String required for argument 2'])
   assert_fails("prop_find({}, '')", 'E474:')
 enddef
 
 def Test_prop_list()
-  v9.CheckDefAndScriptFailure(['prop_list("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_list(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_list("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_list(1, [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_prop_remove()
-  v9.CheckDefAndScriptFailure(['prop_remove([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_remove({}, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['prop_remove({}, 1, "b")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['prop_remove([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_remove({}, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['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()
-  v9.CheckDefAndScriptFailure(['prop_type_add({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_add("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_add({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_add("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
   assert_fails("prop_type_add('', {highlight: 'Search'})", 'E475:')
 enddef
 
 def Test_prop_type_change()
-  v9.CheckDefAndScriptFailure(['prop_type_change({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_change("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_change({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_change("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
   assert_fails("prop_type_change('', {highlight: 'Search'})", 'E475:')
 enddef
 
 def Test_prop_type_delete()
-  v9.CheckDefAndScriptFailure(['prop_type_delete({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_delete({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_delete("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_delete({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_delete({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_delete("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
   assert_fails("prop_type_delete('')", 'E475:')
 enddef
 
 def Test_prop_type_get()
-  v9.CheckDefAndScriptFailure(['prop_type_get({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_get({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_get("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_get({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_get({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_get("a", "b")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
   assert_fails("prop_type_get('')", 'E475:')
 enddef
 
 def Test_prop_type_list()
-  v9.CheckDefAndScriptFailure(['prop_type_list(["a"])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['prop_type_list(2)'], ['E1013: Argument 1: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_list(["a"])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['prop_type_list(2)'], ['E1013: Argument 1: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 1'])
 enddef
 
 def Test_py3eval()
   if !has('python3')
     CheckFeature python3
   endif
-  v9.CheckDefAndScriptFailure(['py3eval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['py3eval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_pyeval()
   if !has('python')
     CheckFeature python
   endif
-  v9.CheckDefAndScriptFailure(['pyeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['pyeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_pyxeval()
   if !has('python') && !has('python3')
     CheckFeature python
   endif
-  v9.CheckDefAndScriptFailure(['pyxeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['pyxeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_rand()
-  v9.CheckDefAndScriptFailure(['rand(10)'], ['E1013: Argument 1: type mismatch, expected list<number> but got number', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['rand(["a"])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<string>')
+  v9.CheckSourceDefAndScriptFailure(['rand(10)'], ['E1013: Argument 1: type mismatch, expected list<number> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['rand(["a"])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<string>')
   assert_true(rand() >= 0)
   assert_true(rand(srand()) >= 0)
 enddef
 
 def Test_range()
-  v9.CheckDefAndScriptFailure(['range("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['range(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['range(10, 20, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['range("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['range(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['range(10, 20, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
 
   # returns a list<number> but it's not declared as such
   assert_equal(['x', 'x'], range(2)->map((i, v) => 'x'))
@@ -3306,8 +3306,8 @@ enddef
 def Test_readdir()
   eval expand('sautest')->readdir((e) => e[0] !=# '.')
   eval expand('sautest')->readdirex((e) => e.name[0] !=# '.')
-  v9.CheckDefAndScriptFailure(['readdir(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['readdir("a", "1", [3])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['readdir(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['readdir("a", "1", [3])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
   if has('unix')
     # only fails on Unix-like systems
     assert_fails('readdir("")', 'E484: Can''t open file')
@@ -3315,8 +3315,8 @@ def Test_readdir()
 enddef
 
 def Test_readdirex()
-  v9.CheckDefAndScriptFailure(['readdirex(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['readdirex("a", "1", [3])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['readdirex(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['readdirex("a", "1", [3])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
   if has('unix')
     # only fails on Unix-like systems
     assert_fails('readdirex("")', 'E484: Can''t open file')
@@ -3332,8 +3332,8 @@ def Test_readblob()
   var lines =<< trim END
       var read: list<string> = readblob('Xreadblob')
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1012: Type mismatch; expected list<string> but got blob', 1)
-  v9.CheckDefExecAndScriptFailure(['readblob("")'], 'E484: Can''t open file <empty>')
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1012: Type mismatch; expected list<string> but got blob', 1)
+  v9.CheckSourceDefExecAndScriptFailure(['readblob("")'], 'E484: Can''t open file <empty>')
 enddef
 
 def Test_readfile()
@@ -3346,15 +3346,15 @@ def Test_readfile()
   var lines =<< trim END
       var read: dict<string> = readfile('Xreadfile')
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1012: Type mismatch; expected dict<string> but got list<string>', 1)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1012: Type mismatch; expected dict<string> but got list<string>', 1)
 
-  v9.CheckDefAndScriptFailure(['readfile("a", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['readfile("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['readfile("")'], 'E1175: Non-empty string required for argument 1')
+  v9.CheckSourceDefAndScriptFailure(['readfile("a", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['readfile("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['readfile("")'], 'E1175: Non-empty string required for argument 1')
 enddef
 
 def Test_reduce()
-  v9.CheckDefAndScriptFailure(['reduce({a: 10}, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1252: String, List or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['reduce({a: 10}, "1")'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1252: String, List or Blob required for argument 1'])
   assert_equal(6, [1, 2, 3]->reduce((r, c) => r + c, 0))
   assert_equal(11, 0z0506->reduce((r, c) => r + c, 0))
 enddef
@@ -3362,13 +3362,13 @@ enddef
 def Test_reltime()
   CheckFeature reltime
 
-  v9.CheckDefExecAndScriptFailure(['[]->reltime()'], 'E474:')
-  v9.CheckDefExecAndScriptFailure(['[]->reltime([])'], 'E474:')
+  v9.CheckSourceDefExecAndScriptFailure(['[]->reltime()'], 'E474:')
+  v9.CheckSourceDefExecAndScriptFailure(['[]->reltime([])'], 'E474:')
 
-  v9.CheckDefAndScriptFailure(['reltime("x")'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['reltime(["x", "y"])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<string>')
-  v9.CheckDefAndScriptFailure(['reltime([1, 2], 10)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefFailure(['reltime([1, 2], ["a", "b"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
+  v9.CheckSourceDefAndScriptFailure(['reltime("x")'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['reltime(["x", "y"])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<string>')
+  v9.CheckSourceDefAndScriptFailure(['reltime([1, 2], 10)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefFailure(['reltime([1, 2], ["a", "b"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
   var start: list<any> = reltime()
   assert_true(type(reltime(start)) == v:t_list)
   var end: list<any> = reltime()
@@ -3378,31 +3378,31 @@ enddef
 def Test_reltimefloat()
   CheckFeature reltime
 
-  v9.CheckDefExecAndScriptFailure(['[]->reltimefloat()'], 'E474:')
+  v9.CheckSourceDefExecAndScriptFailure(['[]->reltimefloat()'], 'E474:')
 
-  v9.CheckDefAndScriptFailure(['reltimefloat("x")'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['reltimefloat([1.1])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<float>')
+  v9.CheckSourceDefAndScriptFailure(['reltimefloat("x")'], ['E1013: Argument 1: type mismatch, expected list<number> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['reltimefloat([1.1])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<float>')
   assert_true(type(reltimefloat(reltime())) == v:t_float)
 enddef
 
 def Test_reltimestr()
   CheckFeature reltime
 
-  v9.CheckDefExecAndScriptFailure(['[]->reltimestr()'], 'E474:')
+  v9.CheckSourceDefExecAndScriptFailure(['[]->reltimestr()'], 'E474:')
 
-  v9.CheckDefAndScriptFailure(['reltimestr(true)'], ['E1013: Argument 1: type mismatch, expected list<number> but got bool', 'E1211: List required for argument 1'])
-  v9.CheckDefFailure(['reltimestr([true])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<bool>')
+  v9.CheckSourceDefAndScriptFailure(['reltimestr(true)'], ['E1013: Argument 1: type mismatch, expected list<number> but got bool', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefFailure(['reltimestr([true])'], 'E1013: Argument 1: type mismatch, expected list<number> but got list<bool>')
   assert_true(type(reltimestr(reltime())) == v:t_string)
 enddef
 
 def Test_remote_expr()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['remote_expr(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['remote_expr("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['remote_expr("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
-  v9.CheckDefAndScriptFailure(['remote_expr("a", "b", "c", "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
-  v9.CheckDefExecAndScriptFailure(['remote_expr("", "")'], 'E241: Unable to send to ')
+  v9.CheckSourceDefAndScriptFailure(['remote_expr(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_expr("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['remote_expr("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['remote_expr("a", "b", "c", "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefExecAndScriptFailure(['remote_expr("", "")'], 'E241: Unable to send to ')
 enddef
 
 def Test_remote_foreground()
@@ -3411,7 +3411,7 @@ def Test_remote_foreground()
   CheckNotMSWindows
   CheckX11
 
-  v9.CheckDefAndScriptFailure(['remote_foreground(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_foreground(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_fails('remote_foreground("NonExistingServer")', 'E241:')
   assert_fails('remote_foreground("")', 'E241:')
 enddef
@@ -3419,32 +3419,32 @@ enddef
 def Test_remote_peek()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['remote_peek(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['remote_peek("a5b6c7", [1])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['remote_peek("")'], 'E573: Invalid server id used')
+  v9.CheckSourceDefAndScriptFailure(['remote_peek(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_peek("a5b6c7", [1])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['remote_peek("")'], 'E573: Invalid server id used')
 enddef
 
 def Test_remote_read()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['remote_read(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['remote_read("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['remote_read("")'], 'E573: Invalid server id used')
+  v9.CheckSourceDefAndScriptFailure(['remote_read(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_read("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['remote_read("")'], 'E573: Invalid server id used')
 enddef
 
 def Test_remote_send()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['remote_send(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['remote_send("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['remote_send("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['remote_send(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_send("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['remote_send("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   assert_fails('remote_send("", "")', 'E241:')
 enddef
 
 def Test_remote_startserver()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['remote_startserver({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remote_startserver({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_remove_literal_list()
@@ -3458,28 +3458,28 @@ def Test_remove_const()
       const l = [1, 2, 3, 4]
       remove(l, 1)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       const d = {a: 1, b: 2}
       remove(d, 'a')
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const dict<number>')
 
   lines =<< trim END
       const b = 0z010203
       remove(b, 1)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
 enddef
 
 def Test_remove()
-  v9.CheckDefAndScriptFailure(['remove("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1228: List, Dictionary or Blob required for argument 1'])
-  v9.CheckDefAndScriptFailure(['remove([], "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['remove([], 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['remove({}, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['remove(0z10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['remove(0z20, 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['remove("a", 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1228: List, Dictionary or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['remove([], "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['remove([], 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['remove({}, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['remove(0z10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['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)
@@ -3511,14 +3511,14 @@ def Test_remove_return_type()
 enddef
 
 def Test_rename()
-  v9.CheckDefAndScriptFailure(['rename(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['rename("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['rename(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['rename("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   rename('', '')->assert_equal(0)
 enddef
 
 def Test_repeat()
-  v9.CheckDefAndScriptFailure(['repeat(1.1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1301: String, Number, List or Blob required for argument 1'])
-  v9.CheckDefAndScriptFailure(['repeat({a: 10}, 2)'], ['E1013: Argument 1: type mismatch, expected string but got dict<', 'E1301: String, Number, List or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['repeat(1.1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1301: String, Number, List or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['repeat({a: 10}, 2)'], ['E1013: Argument 1: type mismatch, expected string but got dict<', 'E1301: String, Number, List or Blob required for argument 1'])
   var lines =<< trim END
       assert_equal('aaa', repeat('a', 3))
       assert_equal('111', repeat(1, 3))
@@ -3529,17 +3529,17 @@ def Test_repeat()
       s ..= repeat(5, 3)
       assert_equal('-555', s)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_resolve()
-  v9.CheckDefAndScriptFailure(['resolve([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['resolve([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
   assert_equal('SomeFile', resolve('SomeFile'))
   resolve('')->assert_equal('')
 enddef
 
 def Test_reverse()
-  v9.CheckDefAndScriptFailure(['reverse(10)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1252: String, List or Blob required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['reverse(10)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1252: String, List or Blob required for argument 1'])
 enddef
 
 def Test_reverse_return_type()
@@ -3556,49 +3556,49 @@ def Test_reverse_const()
       const l = [1, 2, 3, 4]
       reverse(l)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 
   lines =<< trim END
       const b = 0z010203
       reverse(b)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const blob')
 enddef
 
 def Test_rubyeval()
   if !has('ruby')
     CheckFeature ruby
   endif
-  v9.CheckDefAndScriptFailure(['rubyeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['rubyeval([2])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_screenattr()
-  v9.CheckDefAndScriptFailure(['screenattr("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['screenattr(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['screenattr("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['screenattr(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_screenchar()
-  v9.CheckDefAndScriptFailure(['screenchar("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['screenchar(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['screenchar("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['screenchar(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_screenchars()
   assert_equal(['x'], screenchars(1, 1)->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['screenchars("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['screenchars(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['screenchars("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['screenchars(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_screenpos()
-  v9.CheckDefAndScriptFailure(['screenpos("a", 1, 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['screenpos(1, "b", 1)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['screenpos(1, 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['screenpos("a", 1, 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['screenpos(1, "b", 1)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['screenpos(1, 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   assert_equal({col: 1, row: 1, endcol: 1, curscol: 1}, screenpos(1, 1, 1))
 enddef
 
 def Test_screenstring()
-  v9.CheckDefAndScriptFailure(['screenstring("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['screenstring(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['screenstring("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['screenstring(1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_search()
@@ -3630,13 +3630,13 @@ def Test_search()
   normal 0
   assert_equal([0, 0], searchpos('this', '', 0, 0, 'col(".") > col'))
   bwipe!
-  v9.CheckDefAndScriptFailure(['search(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['search("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['search("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['search("a", "b", 3, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['search(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['search("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['search("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['search("a", "b", 3, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   new
   setline(1, "match this")
-  v9.CheckDefAndScriptFailure(['search("a", "", 9, 0, [0])'], ['E1013: Argument 5: type mismatch, expected func(...): any but got list<number>', 'E730: Using a List as a String'])
+  v9.CheckSourceDefAndScriptFailure(['search("a", "", 9, 0, [0])'], ['E1013: Argument 5: type mismatch, expected func(...): any but got list<number>', 'E730: Using a List as a String'])
   bwipe!
 enddef
 
@@ -3652,14 +3652,14 @@ def Test_searchcount()
           maxcount: 99,
           incomplete: 0})
   bwipe!
-  v9.CheckDefAndScriptFailure(['searchcount([1])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['searchcount([1])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 1'])
 enddef
 
 def Test_searchdecl()
   searchdecl('blah', true, true)->assert_equal(1)
-  v9.CheckDefAndScriptFailure(['searchdecl(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['searchdecl("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['searchdecl("a", true, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['searchdecl(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['searchdecl("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['searchdecl("a", true, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
 
   # search for an empty string declaration
   var lines: list<string> =<< trim END
@@ -3719,7 +3719,7 @@ def Test_searchpair()
       enddef
       Fail()
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
   assert_equal('yes', g:caught)
   unlet g:caught
   bwipe!
@@ -3727,64 +3727,64 @@ def Test_searchpair()
   lines =<< trim END
       echo searchpair("a", "b", "c", "d", "f", 33)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1001: Variable not found: f', 'E475: Invalid argument: d'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1001: Variable not found: f', 'E475: Invalid argument: d'])
 
   var errors = ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1']
-  v9.CheckDefAndScriptFailure(['searchpair(1, "b", "c")'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos(1, "b", "c")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair(1, "b", "c")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos(1, "b", "c")'], errors)
 
   errors = ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2']
-  v9.CheckDefAndScriptFailure(['searchpair("a", 2, "c")'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos("a", 2, "c")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", 2, "c")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos("a", 2, "c")'], errors)
 
   errors = ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3']
-  v9.CheckDefAndScriptFailure(['searchpair("a", "b", 3)'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos("a", "b", 3)'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", "b", 3)'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos("a", "b", 3)'], errors)
 
   errors = ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4']
-  v9.CheckDefAndScriptFailure(['searchpair("a", "b", "c", 4)'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", "b", "c", 4)'], errors)
 
   new
   setline(1, "match this")
   errors = ['E1013: Argument 5: type mismatch, expected func(...): any but got list<number>', 'E730: Using a List as a String']
-  v9.CheckDefAndScriptFailure(['searchpair("a", "b", "c", "r", [0])'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", [0])'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", "b", "c", "r", [0])'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", [0])'], errors)
   bwipe!
 
   errors = ['E1013: Argument 6: type mismatch, expected number but got string', 'E1210: Number required for argument 6']
-  v9.CheckDefAndScriptFailure(['searchpair("a", "b", "c", "r", "1", "f")'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", "1", "f")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", "b", "c", "r", "1", "f")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", "1", "f")'], errors)
 
   errors = ['E1013: Argument 7: type mismatch, expected number but got string', 'E1210: Number required for argument 7']
-  v9.CheckDefAndScriptFailure(['searchpair("a", "b", "c", "r", "1", 3, "g")'], errors)
-  v9.CheckDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", "1", 3, "g")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpair("a", "b", "c", "r", "1", 3, "g")'], errors)
+  v9.CheckSourceDefAndScriptFailure(['searchpairpos("a", "b", "c", "r", "1", 3, "g")'], errors)
 enddef
 
 def Test_searchpos()
   assert_equal(['x', 'x'], searchpos('.')->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['searchpos(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['searchpos("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['searchpos("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['searchpos("a", "b", 3, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['searchpos(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['searchpos("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['searchpos("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['searchpos("a", "b", 3, "d")'], ['E1013: Argument 4: type mismatch, expected number but got string', 'E1210: Number required for argument 4'])
   new
   setline(1, "match this")
-  v9.CheckDefAndScriptFailure(['searchpos("a", "", 9, 0, [0])'], ['E1013: Argument 5: type mismatch, expected func(...): any but got list<number>', 'E730: Using a List as a String'])
+  v9.CheckSourceDefAndScriptFailure(['searchpos("a", "", 9, 0, [0])'], ['E1013: Argument 5: type mismatch, expected func(...): any but got list<number>', 'E730: Using a List as a String'])
   bwipe!
 enddef
 
 def Test_server2client()
   CheckFeature clientserver
   CheckEnv DISPLAY
-  v9.CheckDefAndScriptFailure(['server2client(10, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['server2client("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['server2client("", "a")'], 'E573: Invalid server id used')
-  v9.CheckDefExecAndScriptFailure(['server2client("", "")'], 'E573: Invalid server id used')
+  v9.CheckSourceDefAndScriptFailure(['server2client(10, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['server2client("a", 10)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['server2client("", "a")'], 'E573: Invalid server id used')
+  v9.CheckSourceDefExecAndScriptFailure(['server2client("", "")'], 'E573: Invalid server id used')
 enddef
 
 def Test_shellescape()
-  v9.CheckDefAndScriptFailure(['shellescape(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['shellescape("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['shellescape(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['shellescape("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
   if has('unix')
     assert_equal("''", shellescape(''))
   endif
@@ -3837,7 +3837,7 @@ def Test_set_get_bufline()
 
       exe 'bwipe! ' .. b
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_setbufvar()
@@ -3864,8 +3864,8 @@ def Test_setbufvar()
   setbufvar('%', 'myvar', 123)
   getbufvar('%', 'myvar')->assert_equal(123)
 
-  v9.CheckDefAndScriptFailure(['setbufvar(true, "v", 3)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setbufvar(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setbufvar(true, "v", 3)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setbufvar(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   assert_fails('setbufvar("%", "", 10)', 'E461: Illegal variable name')
 enddef
 
@@ -3878,10 +3878,10 @@ def Test_setbufline()
   setbufline(bnum, 5, 10)
   setbufline(bnum, 6, ['two', 11])
   assert_equal(['1', '2', '3', 'one', '10', 'two', '11'], getbufline(bnum, 1, '$'))
-  v9.CheckDefAndScriptFailure(['setbufline([1], 1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setbufline(1, [1], "x")'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['setbufline(' .. bnum .. ', -1, "x")'], 'E966: Invalid line number: -1')
-  v9.CheckDefAndScriptFailure(['setbufline(1, 1, {"a": 10})'], ['E1013: Argument 3: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['setbufline([1], 1, "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setbufline(1, [1], "x")'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['setbufline(' .. bnum .. ', -1, "x")'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefAndScriptFailure(['setbufline(1, 1, {"a": 10})'], ['E1013: Argument 3: type mismatch, expected string but got dict<number>', 'E1224: String, Number or List required for argument 3'])
   bnum->bufwinid()->win_gotoid()
   setbufline('', 1, 'nombres')
   getline(1)->assert_equal('nombres')
@@ -3889,53 +3889,53 @@ def Test_setbufline()
 enddef
 
 def Test_setcellwidths()
-  v9.CheckDefAndScriptFailure(['setcellwidths(1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setcellwidths({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcellwidths(1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcellwidths({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
 enddef
 
 def Test_setcharpos()
-  v9.CheckDefAndScriptFailure(['setcharpos(1, [])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefFailure(['setcharpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
-  v9.CheckDefAndScriptFailure(['setcharpos(".", 1)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['setcharpos("", [0, 1, 1, 1])'], 'E474: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['setcharpos(1, [])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefFailure(['setcharpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
+  v9.CheckSourceDefAndScriptFailure(['setcharpos(".", 1)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['setcharpos("", [0, 1, 1, 1])'], 'E474: Invalid argument')
 enddef
 
 def Test_setcharsearch()
-  v9.CheckDefAndScriptFailure(['setcharsearch("x")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setcharsearch([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcharsearch("x")'], ['E1013: Argument 1: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcharsearch([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
   var d: dict<any> = {char: 'x', forward: 1, until: 1}
   setcharsearch(d)
   assert_equal(d, getcharsearch())
 enddef
 
 def Test_setcmdline()
-  v9.CheckDefAndScriptSuccess(['setcmdline("ls", 2)'])
-  v9.CheckDefAndScriptFailure(['setcmdline(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setcmdline("ls", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptSuccess(['setcmdline("ls", 2)'])
+  v9.CheckSourceDefAndScriptFailure(['setcmdline(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcmdline("ls", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_setcmdpos()
-  v9.CheckDefAndScriptFailure(['setcmdpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcmdpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_setcursorcharpos()
-  v9.CheckDefAndScriptFailure(['setcursorcharpos(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected number but got blob', 'E1224: String, Number or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setcursorcharpos(1, "2")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['setcursorcharpos(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['setcursorcharpos("", 10)'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['setcursorcharpos(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected number but got blob', 'E1224: String, Number or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setcursorcharpos(1, "2")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setcursorcharpos(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['setcursorcharpos("", 10)'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_setenv()
-  v9.CheckDefAndScriptFailure(['setenv(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setenv(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal(0, setenv('', ''))
   assert_equal(0, setenv('', v:null))
 enddef
 
 def Test_setfperm()
-  v9.CheckDefAndScriptFailure(['setfperm(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setfperm("a", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['setfperm("Xfile", "")'], 'E475: Invalid argument')
-  v9.CheckDefExecAndScriptFailure(['setfperm("", "")'], 'E475: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['setfperm(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setfperm("a", 0z10)'], ['E1013: Argument 2: type mismatch, expected string but got blob', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['setfperm("Xfile", "")'], 'E475: Invalid argument')
+  v9.CheckSourceDefExecAndScriptFailure(['setfperm("", "")'], 'E475: Invalid argument')
   assert_equal(0, setfperm('', 'rw-r--r--'))
 enddef
 
@@ -3949,9 +3949,9 @@ def Test_setline()
   assert_equal(['one', 'b', 'c', 'd'], getline(1, '$'))
   setline(1, 10)
   assert_equal(['10', 'b', 'c', 'd'], getline(1, '$'))
-  v9.CheckDefAndScriptFailure(['setline([1], "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['setline("", "x")'], 'E1209: Invalid value for a line number')
-  v9.CheckDefExecAndScriptFailure(['setline(-1, "x")'], 'E966: Invalid line number: -1')
+  v9.CheckSourceDefAndScriptFailure(['setline([1], "x")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['setline("", "x")'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefExecAndScriptFailure(['setline(-1, "x")'], 'E966: Invalid line number: -1')
   assert_fails('setline(".a", "x")', ['E1209:', 'E1209:'])
   bw!
 enddef
@@ -3961,28 +3961,28 @@ def Test_setloclist()
   var what = {items: items}
   setqflist([], ' ', what)
   setloclist(0, [], ' ', what)
-  v9.CheckDefAndScriptFailure(['setloclist("1", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setloclist(1, 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['setloclist(1, [], 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
-  v9.CheckDefAndScriptFailure(['setloclist(1, [], "a", [])'], ['E1013: Argument 4: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['setloclist("1", [])'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setloclist(1, 2)'], ['E1013: Argument 2: type mismatch, expected list<any> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setloclist(1, [], 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['setloclist(1, [], "a", [])'], ['E1013: Argument 4: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 4'])
 enddef
 
 def Test_setmatches()
-  v9.CheckDefAndScriptFailure(['setmatches({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setmatches([], "1")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setmatches({})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setmatches([], "1")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_setpos()
-  v9.CheckDefAndScriptFailure(['setpos(1, [])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefFailure(['setpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
-  v9.CheckDefAndScriptFailure(['setpos(".", 1)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['setpos("", [0, 1, 1, 1])'], 'E474: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['setpos(1, [])'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefFailure(['setpos(".", ["a"])'], 'E1013: Argument 2: type mismatch, expected list<number> but got list<string>')
+  v9.CheckSourceDefAndScriptFailure(['setpos(".", 1)'], ['E1013: Argument 2: type mismatch, expected list<number> but got number', 'E1211: List required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['setpos("", [0, 1, 1, 1])'], 'E474: Invalid argument')
 enddef
 
 def Test_setqflist()
-  v9.CheckDefAndScriptFailure(['setqflist(1, "")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setqflist([], 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['setqflist([], "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['setqflist(1, "")'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setqflist([], 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setqflist([], "", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_setreg()
@@ -3991,111 +3991,111 @@ def Test_setreg()
   setreg('a', reginfo)
   getreginfo('a')->assert_equal(reginfo)
   assert_fails('setreg("ab", 0)', 'E1162:')
-  v9.CheckDefAndScriptFailure(['setreg(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setreg("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['setreg(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setreg("a", "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   setreg('', '1a2b3c')
   assert_equal('1a2b3c', @")
 enddef
 
 def Test_settabvar()
-  v9.CheckDefAndScriptFailure(['settabvar("a", "b", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['settabvar(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['settabvar("a", "b", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['settabvar(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   assert_fails('settabvar(1, "", 10)', 'E461: Illegal variable name')
 enddef
 
 def Test_settabwinvar()
-  v9.CheckDefAndScriptFailure(['settabwinvar("a", 2, "c", true)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['settabwinvar(1, "b", "c", [])'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['settabwinvar(1, 1, 3, {})'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['settabwinvar("a", 2, "c", true)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['settabwinvar(1, "b", "c", [])'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['settabwinvar(1, 1, 3, {})'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   assert_fails('settabwinvar(1, 1, "", 10)', 'E461: Illegal variable name')
 enddef
 
 def Test_settagstack()
-  v9.CheckDefAndScriptFailure(['settagstack(true, {})'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['settagstack(1, [1])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefAndScriptFailure(['settagstack(1, {}, 2)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['settagstack(true, {})'], ['E1013: Argument 1: type mismatch, expected number but got bool', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['settagstack(1, [1])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['settagstack(1, {}, 2)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   assert_fails('settagstack(1, {}, "")', 'E962: Invalid action')
 enddef
 
 def Test_setwinvar()
-  v9.CheckDefAndScriptFailure(['setwinvar("a", "b", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['setwinvar(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['setwinvar("a", "b", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['setwinvar(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   assert_fails('setwinvar(1, "", 10)', 'E461: Illegal variable name')
   assert_fails('setwinvar(0, "&rulerformat", true)', ['E928:', 'E928:'])
 enddef
 
 def Test_sha256()
-  v9.CheckDefAndScriptFailure(['sha256(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sha256(0zABCD)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sha256(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sha256(0zABCD)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
   assert_equal('ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad', sha256('abc'))
   assert_equal('e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855', sha256(''))
 enddef
 
 def Test_shiftwidth()
-  v9.CheckDefAndScriptFailure(['shiftwidth("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['shiftwidth("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_sign_define()
-  v9.CheckDefAndScriptFailure(['sign_define({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_define({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_define("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['sign_define({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_define({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_define("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_sign_getdefined()
-  v9.CheckDefAndScriptFailure(['sign_getdefined(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_getdefined(2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_getdefined(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_getdefined(2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   sign_getdefined('')->assert_equal([])
 enddef
 
 def Test_sign_getplaced()
-  v9.CheckDefAndScriptFailure(['sign_getplaced(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_getplaced(1, ["a"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefAndScriptFailure(['sign_getplaced("a", 1.1)'], ['E1013: Argument 2: type mismatch, expected dict<any> but got float', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['sign_getplaced(bufnr(), {lnum: ""})'], 'E1030: Using a String as a Number:')
+  v9.CheckSourceDefAndScriptFailure(['sign_getplaced(["x"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_getplaced(1, ["a"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['sign_getplaced("a", 1.1)'], ['E1013: Argument 2: type mismatch, expected dict<any> but got float', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['sign_getplaced(bufnr(), {lnum: ""})'], 'E1030: Using a String as a Number:')
   sign_getplaced('')->assert_equal([{signs: [], bufnr: bufnr()}])
 enddef
 
 def Test_sign_jump()
-  v9.CheckDefAndScriptFailure(['sign_jump("a", "b", "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_jump(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['sign_jump(1, "b", true)'], ['E1013: Argument 3: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['sign_jump("a", "b", "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_jump(1, 2, 3)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['sign_jump(1, "b", true)'], ['E1013: Argument 3: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 3'])
 enddef
 
 def Test_sign_place()
-  v9.CheckDefAndScriptFailure(['sign_place("a", "b", "c", "d")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_place(1, 2, "c", "d")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['sign_place(1, "b", 3, "d")'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
-  v9.CheckDefAndScriptFailure(['sign_place(1, "b", "c", 1.1)'], ['E1013: Argument 4: type mismatch, expected string but got float', 'E1220: String or Number required for argument 4'])
-  v9.CheckDefAndScriptFailure(['sign_place(1, "b", "c", "d", [1])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 5'])
-  v9.CheckDefExecAndScriptFailure(['sign_place(0, "", "MySign", bufnr(), {lnum: ""})'], 'E1209: Invalid value for a line number: ""')
+  v9.CheckSourceDefAndScriptFailure(['sign_place("a", "b", "c", "d")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_place(1, 2, "c", "d")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['sign_place(1, "b", 3, "d")'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['sign_place(1, "b", "c", 1.1)'], ['E1013: Argument 4: type mismatch, expected string but got float', 'E1220: String or Number required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['sign_place(1, "b", "c", "d", [1])'], ['E1013: Argument 5: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 5'])
+  v9.CheckSourceDefExecAndScriptFailure(['sign_place(0, "", "MySign", bufnr(), {lnum: ""})'], 'E1209: Invalid value for a line number: ""')
   assert_fails("sign_place(0, '', '', '')", 'E155:')
 enddef
 
 def Test_sign_placelist()
-  v9.CheckDefAndScriptFailure(['sign_placelist("x")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_placelist({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['sign_placelist([{"name": "MySign", "buffer": bufnr(), "lnum": ""}])'], 'E1209: Invalid value for a line number: ""')
+  v9.CheckSourceDefAndScriptFailure(['sign_placelist("x")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_placelist({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['sign_placelist([{"name": "MySign", "buffer": bufnr(), "lnum": ""}])'], 'E1209: Invalid value for a line number: ""')
   assert_fails('sign_placelist([{name: "MySign", buffer: "", lnum: 1}])', 'E155:')
 enddef
 
 def Test_sign_undefine()
-  v9.CheckDefAndScriptFailure(['sign_undefine({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_undefine([1])'], ['E1013: Argument 1: type mismatch, expected list<string> but got list<number>', 'E155: Unknown sign:'])
+  v9.CheckSourceDefAndScriptFailure(['sign_undefine({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_undefine([1])'], ['E1013: Argument 1: type mismatch, expected list<string> but got list<number>', 'E155: Unknown sign:'])
 enddef
 
 def Test_sign_unplace()
-  v9.CheckDefAndScriptFailure(['sign_unplace({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_unplace({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_unplace("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['sign_unplace({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_unplace({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_unplace("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_sign_unplacelist()
-  v9.CheckDefAndScriptFailure(['sign_unplacelist("x")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sign_unplacelist({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_unplacelist("x")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sign_unplacelist({"a": 10})'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
 enddef
 
 def Test_simplify()
-  v9.CheckDefAndScriptFailure(['simplify(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['simplify(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   call assert_equal('NonExistingFile', simplify('NonExistingFile'))
   simplify('')->assert_equal('')
 enddef
@@ -4105,9 +4105,9 @@ def Test_slice()
   assert_equal(['val'], lds->slice(0, 1)->map((_, v) => 'val'))
   assert_equal(['val'], lds[ : ]->map((_, v) => 'val'))
 
-  v9.CheckDefAndScriptFailure(['slice({"a": 10}, 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['slice([1, 2, 3], "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['slice("abc", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['slice({"a": 10}, 1)'], ['E1013: Argument 1: type mismatch, expected list<any> but got dict<number>', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['slice([1, 2, 3], "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['slice("abc", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
 enddef
 
 def Test_spellsuggest()
@@ -4116,29 +4116,29 @@ def Test_spellsuggest()
   else
     spellsuggest('marrch', 1, true)->assert_equal(['March'])
   endif
-  v9.CheckDefAndScriptFailure(['spellsuggest(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['spellsuggest("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['spellsuggest("a", 1, 0z01)'], ['E1013: Argument 3: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['spellsuggest(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['spellsuggest("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['spellsuggest("a", 1, 0z01)'], ['E1013: Argument 3: type mismatch, expected bool but got blob', 'E1212: Bool required for argument 3'])
   spellsuggest('')->assert_equal([])
 enddef
 
 def Test_sound_playevent()
   CheckFeature sound
-  v9.CheckDefAndScriptFailure(['sound_playevent(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sound_playevent(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
 enddef
 
 def Test_sound_playfile()
   CheckFeature sound
-  v9.CheckDefAndScriptFailure(['sound_playfile(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sound_playfile(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
 enddef
 
 def Test_sound_stop()
   CheckFeature sound
-  v9.CheckDefAndScriptFailure(['sound_stop("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sound_stop("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_soundfold()
-  v9.CheckDefAndScriptFailure(['soundfold(20)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['soundfold(20)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal('abc', soundfold('abc'))
   assert_equal('', soundfold(''))
 enddef
@@ -4160,12 +4160,12 @@ def Test_sort_argument()
     sort(l, Compare)
     assert_equal([1, 2, 3, 4, 5, 6, 7, 8], l)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
       sort([1, 2, 3], (a: any, b: any) => 1)
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
       vim9script
@@ -4176,7 +4176,7 @@ def Test_sort_argument()
       enddef
       SortedList()->assert_equal([1, 2, 3])
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 enddef
 
 def Test_sort_const()
@@ -4184,12 +4184,12 @@ def Test_sort_const()
       const l = [1, 2, 3, 4]
       sort(l)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 enddef
 
 def Test_sort_compare_func_fails()
-  v9.CheckDefAndScriptFailure(['sort("a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['sort([1], "", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['sort("a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['sort([1], "", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 
   var lines =<< trim END
     vim9script
@@ -4202,31 +4202,31 @@ def Test_sort_compare_func_fails()
       var l = [1, 2, 3]
       sort(l, (a: string, b: number) => 1)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(string, number): number', 'E1013: Argument 1: type mismatch, expected string but got number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(string, number): number', 'E1013: Argument 1: type mismatch, expected string but got number'])
 
   lines =<< trim END
       var l = ['a', 'b', 'c']
       sort(l, (a: string, b: number) => 1)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?string): number but got func(string, number): number', 'E1013: Argument 2: type mismatch, expected number but got string'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?string, ?string): number but got func(string, number): number', 'E1013: Argument 2: type mismatch, expected number but got string'])
 
   lines =<< trim END
       sort([1, 2, 3], (a: number, b: number) => true)
   END
-  v9.CheckDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, number): bool', 'E1138: Using a Bool as a Number'])
+  v9.CheckSourceDefAndScriptFailure(lines, ['E1013: Argument 2: type mismatch, expected func(?number, ?number): number but got func(number, number): bool', 'E1138: Using a Bool as a Number'])
 enddef
 
 def Test_spellbadword()
-  v9.CheckDefAndScriptFailure(['spellbadword(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['spellbadword(100)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   spellbadword('good')->assert_equal(['', ''])
   spellbadword('')->assert_equal(['', ''])
 enddef
 
 def Test_split()
   split('  aa  bb  ', '\W\+', true)->assert_equal(['', 'aa', 'bb', ''])
-  v9.CheckDefAndScriptFailure(['split(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['split("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['split("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['split(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['split("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['split("a", "b", 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
   split('')->assert_equal([])
   split('', '')->assert_equal([])
 enddef
@@ -4235,12 +4235,12 @@ def Test_srand()
   var expected = srand()->len()->range()->map((_, _) => 'x')
   assert_equal(expected, srand()->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['srand("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['srand("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
   type(srand(100))->assert_equal(v:t_list)
 enddef
 
 def Test_state()
-  v9.CheckDefAndScriptFailure(['state({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['state({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
   assert_equal('', state('a'))
 enddef
 
@@ -4249,14 +4249,14 @@ def Test_str2float()
   str2float("2e-2")->assert_equal(0.02)
   str2float('')->assert_equal(0.0)
 
-  v9.CheckDefAndScriptFailure(['str2float(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['str2float(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
 enddef
 
 def Test_str2list()
   assert_equal(['x', 'x', 'x'], str2list('abc')->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['str2list(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['str2list("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['str2list(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['str2list("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
   assert_equal([97], str2list('a'))
   assert_equal([97], str2list('a', 1))
   assert_equal([97], str2list('a', true))
@@ -4267,29 +4267,29 @@ def Test_str2nr()
   str2nr("1'000'000", 10, true)->assert_equal(1000000)
   str2nr('')->assert_equal(0)
 
-  v9.CheckDefAndScriptFailure(['str2nr(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['str2nr("123", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['str2nr("123", 10, "x")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['str2nr(123)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['str2nr("123", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['str2nr("123", 10, "x")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
 enddef
 
 def Test_strcharlen()
-  v9.CheckDefAndScriptFailure(['strcharlen([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strcharlen([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
   "abc"->strcharlen()->assert_equal(3)
   strcharlen(99)->assert_equal(2)
 enddef
 
 def Test_strcharpart()
-  v9.CheckDefAndScriptFailure(['strcharpart(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strcharpart("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['strcharpart("a", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['strcharpart("a", 1, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['strcharpart(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strcharpart("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strcharpart("a", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['strcharpart("a", 1, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
   strcharpart('', 0)->assert_equal('')
 enddef
 
 def Test_strchars()
   strchars("A\u20dd", true)->assert_equal(1)
-  v9.CheckDefAndScriptFailure(['strchars(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strchars("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strchars(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strchars("a", 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
   assert_equal(3, strchars('abc'))
   assert_equal(3, strchars('abc', 1))
   assert_equal(3, strchars('abc', true))
@@ -4297,46 +4297,46 @@ def Test_strchars()
 enddef
 
 def Test_strdisplaywidth()
-  v9.CheckDefAndScriptFailure(['strdisplaywidth(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strdisplaywidth("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strdisplaywidth(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strdisplaywidth("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
   strdisplaywidth('')->assert_equal(0)
 enddef
 
 def Test_strftime()
   if exists('*strftime')
-    v9.CheckDefAndScriptFailure(['strftime(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['strftime("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['strftime(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['strftime("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
     strftime('')->assert_equal('')
   endif
 enddef
 
 def Test_strgetchar()
-  v9.CheckDefAndScriptFailure(['strgetchar(1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strgetchar("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strgetchar(1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strgetchar("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
   strgetchar('', 0)->assert_equal(-1)
   strgetchar('', 1)->assert_equal(-1)
 enddef
 
 def Test_stridx()
-  v9.CheckDefAndScriptFailure(['stridx([1], "b")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['stridx("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['stridx("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['stridx([1], "b")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['stridx("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['stridx("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   stridx('', '')->assert_equal(0)
   stridx('', 'a')->assert_equal(-1)
   stridx('a', '')->assert_equal(0)
 enddef
 
 def Test_strlen()
-  v9.CheckDefAndScriptFailure(['strlen([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strlen([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
   "abc"->strlen()->assert_equal(3)
   strlen(99)->assert_equal(2)
 enddef
 
 def Test_strpart()
-  v9.CheckDefAndScriptFailure(['strpart(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strpart("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['strpart("a", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
-  v9.CheckDefAndScriptFailure(['strpart("a", 1, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['strpart(1, 2)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strpart("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strpart("a", 1, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['strpart("a", 1, 1, 2)'], ['E1013: Argument 4: type mismatch, expected bool but got number', 'E1212: Bool required for argument 4'])
   strpart('', 0)->assert_equal('')
 enddef
 
@@ -4344,8 +4344,8 @@ def Test_strptime()
   CheckFunction strptime
   CheckNotBSD
   if exists_compiled('*strptime')
-    v9.CheckDefAndScriptFailure(['strptime(10, "2021")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-    v9.CheckDefAndScriptFailure(['strptime("%Y", 2021)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['strptime(10, "2021")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['strptime("%Y", 2021)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
     assert_notequal(0, strptime('%Y', '2021'))
     # This fails on BSD 14 and returns
     # -2209078800 instead of 0
@@ -4354,30 +4354,30 @@ def Test_strptime()
 enddef
 
 def Test_strridx()
-  v9.CheckDefAndScriptFailure(['strridx([1], "b")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strridx("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['strridx("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['strridx([1], "b")'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strridx("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strridx("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   strridx('', '')->assert_equal(0)
   strridx('', 'a')->assert_equal(-1)
   strridx('a', '')->assert_equal(1)
 enddef
 
 def Test_strtrans()
-  v9.CheckDefAndScriptFailure(['strtrans(20)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strtrans(20)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal('abc', strtrans('abc'))
   strtrans('')->assert_equal('')
 enddef
 
 def Test_strutf16len()
-  v9.CheckDefAndScriptFailure(['strutf16len([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['strutf16len("a", "")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['strutf16len([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strutf16len("a", "")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
   ""->strutf16len()->assert_equal(0)
   '-ą́-ą́'->strutf16len(true)->assert_equal(8)
   '-ą́-ą́'->strutf16len(false)->assert_equal(4)
 enddef
 
 def Test_strwidth()
-  v9.CheckDefAndScriptFailure(['strwidth(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['strwidth(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal(4, strwidth('abcd'))
   strwidth('')->assert_equal(0)
 enddef
@@ -4388,8 +4388,8 @@ def Test_submatch()
   var actual = substitute('A123456789', pat, Rep, '')
   var expected = "[['A123456789'], ['1'], ['2'], ['3'], ['4'], ['5'], ['6'], ['7'], ['8'], ['9']]"
   actual->assert_equal(expected)
-  v9.CheckDefAndScriptFailure(['submatch("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['submatch(1, "a")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['submatch("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['submatch(1, "a")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
 enddef
 
 def Test_substitute()
@@ -4400,30 +4400,30 @@ def Test_substitute()
     assert_fails('"text"->substitute(".*", () => test_null_job(), "")', 'E908: Using an invalid value as a String: job')
     assert_fails('"text"->substitute(".*", () => test_null_channel(), "")', 'E908: Using an invalid value as a String: channel')
   endif
-  v9.CheckDefAndScriptFailure(['substitute(1, "b", "1", "d")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['substitute("a", 2, "1", "d")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['substitute("a", "b", "1", 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['substitute(1, "b", "1", "d")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['substitute("a", 2, "1", "d")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['substitute("a", "b", "1", 4)'], ['E1013: Argument 4: type mismatch, expected string but got number', 'E1174: String required for argument 4'])
   substitute('', '', '', '')->assert_equal('')
 
   var lines =<< trim END
     assert_equal("4", substitute("3", '\d', '\=str2nr(submatch(0)) + 1', 'g'))
   END
-  v9.CheckDefAndScriptSuccess(lines)
+  v9.CheckSourceDefAndScriptSuccess(lines)
 
   lines =<< trim END
     assert_equal("4", substitute("3", '\d', '\="text" x', 'g'))
   END
-  v9.CheckDefAndScriptFailure(lines, 'E488: Trailing characters: x')
+  v9.CheckSourceDefAndScriptFailure(lines, 'E488: Trailing characters: x')
 enddef
 
 def Test_swapinfo()
-  v9.CheckDefAndScriptFailure(['swapinfo({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['swapinfo({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1174: String required for argument 1'])
   call swapinfo('x')->assert_equal({error: 'Cannot open file'})
   call swapinfo('')->assert_equal({error: 'Cannot open file'})
 enddef
 
 def Test_swapname()
-  v9.CheckDefAndScriptFailure(['swapname([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['swapname([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
   assert_fails('swapname("NonExistingBuf")', 'E94:')
 enddef
 
@@ -4432,46 +4432,46 @@ def Test_synID()
   setline(1, "text")
   synID(1, 1, true)->assert_equal(0)
   bwipe!
-  v9.CheckDefAndScriptFailure(['synID(0z10, 1, true)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['synID("a", true, false)'], ['E1013: Argument 2: type mismatch, expected number but got bool', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['synID(1, 1, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['synID("", 10, true)'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['synID(0z10, 1, true)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['synID("a", true, false)'], ['E1013: Argument 2: type mismatch, expected number but got bool', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['synID(1, 1, 2)'], ['E1013: Argument 3: type mismatch, expected bool but got number', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['synID("", 10, true)'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_synIDattr()
-  v9.CheckDefAndScriptFailure(['synIDattr("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['synIDattr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['synIDattr(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['synIDattr("a", "b")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['synIDattr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['synIDattr(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   synIDattr(1, '', '')->assert_equal('')
 enddef
 
 def Test_synIDtrans()
-  v9.CheckDefAndScriptFailure(['synIDtrans("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['synIDtrans("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_synconcealed()
-  v9.CheckDefAndScriptFailure(['synconcealed(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['synconcealed(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['synconcealed(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['synconcealed(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
   if has('conceal')
-    v9.CheckDefExecAndScriptFailure(['synconcealed("", 4)'], 'E1209: Invalid value for a line number')
+    v9.CheckSourceDefExecAndScriptFailure(['synconcealed("", 4)'], 'E1209: Invalid value for a line number')
   endif
 enddef
 
 def Test_synstack()
-  v9.CheckDefAndScriptFailure(['synstack(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['synstack(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['synstack("", 4)'], 'E1209: Invalid value for a line number')
+  v9.CheckSourceDefAndScriptFailure(['synstack(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['synstack(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['synstack("", 4)'], 'E1209: Invalid value for a line number')
 enddef
 
 def Test_system()
-  v9.CheckDefAndScriptFailure(['system(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['system("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1224: String, Number or List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['system(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['system("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1224: String, Number or List required for argument 2'])
   assert_equal("123\n", system('echo 123'))
 enddef
 
 def Test_systemlist()
-  v9.CheckDefAndScriptFailure(['systemlist(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['systemlist("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1224: String, Number or List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['systemlist(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['systemlist("a", {})'], ['E1013: Argument 2: type mismatch, expected string but got dict<any>', 'E1224: String, Number or List required for argument 2'])
   if has('win32')
     call assert_equal(["123\r"], systemlist('echo 123'))
   else
@@ -4480,106 +4480,106 @@ def Test_systemlist()
 enddef
 
 def Test_tabpagebuflist()
-  v9.CheckDefAndScriptFailure(['tabpagebuflist("t")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tabpagebuflist("t")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
   assert_equal([bufnr('')], tabpagebuflist())
   assert_equal([bufnr('')], tabpagebuflist(1))
   assert_equal(['x'], tabpagebuflist()->map((_, _) => 'x'))
 enddef
 
 def Test_tabpagenr()
-  v9.CheckDefAndScriptFailure(['tabpagenr(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['tabpagenr("")'], 'E15: Invalid expression')
+  v9.CheckSourceDefAndScriptFailure(['tabpagenr(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['tabpagenr("")'], 'E15: Invalid expression')
   assert_equal(1, tabpagenr('$'))
   assert_equal(1, tabpagenr())
 enddef
 
 def Test_tabpagewinnr()
-  v9.CheckDefAndScriptFailure(['tabpagewinnr("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['tabpagewinnr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['tabpagewinnr(1, "")'], 'E15: Invalid expression')
+  v9.CheckSourceDefAndScriptFailure(['tabpagewinnr("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tabpagewinnr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['tabpagewinnr(1, "")'], 'E15: Invalid expression')
 enddef
 
 def Test_taglist()
-  v9.CheckDefAndScriptFailure(['taglist([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['taglist("a", [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['taglist([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['taglist("a", [2])'], ['E1013: Argument 2: type mismatch, expected string but got list<number>', 'E1174: String required for argument 2'])
   taglist('')->assert_equal(0)
   taglist('', '')->assert_equal(0)
 enddef
 
 def Test_term_dumpload()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_dumpload({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_dumpload({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_dumpload("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['term_dumpload("")'], 'E485: Can''t read file')
+  v9.CheckSourceDefAndScriptFailure(['term_dumpload({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpload({"a": 10}, "b")'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpload("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<string>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['term_dumpload("")'], 'E485: Can''t read file')
 enddef
 
 def Test_term_dumpdiff()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_dumpdiff(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_dumpdiff("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['term_dumpdiff("a", "b", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['term_dumpdiff("", "")'], 'E485: Can''t read file')
+  v9.CheckSourceDefAndScriptFailure(['term_dumpdiff(1, "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpdiff("a", 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpdiff("a", "b", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['term_dumpdiff("", "")'], 'E485: Can''t read file')
 enddef
 
 def Test_term_dumpwrite()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_dumpwrite(true, "b")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_dumpwrite(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['term_dumpwrite("a", "b", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpwrite(true, "b")'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpwrite(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_dumpwrite("a", "b", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_term_getaltscreen()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getaltscreen(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getaltscreen(true)'], ['E1013: Argument 1: type mismatch, expected string but got bool', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getansicolors()
   CheckRunVimInTerminal
   CheckFeature termguicolors
-  v9.CheckDefAndScriptFailure(['term_getansicolors(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getansicolors(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getattr()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getattr("x", "a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_getattr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_getattr("x", "a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getattr(1, 2)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
 enddef
 
 def Test_term_getcursor()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getcursor({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getcursor({"a": 10})'], ['E1013: Argument 1: type mismatch, expected string but got dict<number>', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getjob()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getjob(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getjob(0z10)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getline()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getline(1.1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_getline(1, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_getline(1.1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getline(1, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
 enddef
 
 def Test_term_getscrolled()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getscrolled(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getscrolled(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getsize()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getsize(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getsize(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_getstatus()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_getstatus(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_getstatus(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_gettitle()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_gettitle(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_gettitle(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
 enddef
 
 def Test_term_gettty()
@@ -4590,28 +4590,28 @@ def Test_term_gettty()
     term_gettty(buf, true)->assert_notequal('')
     g:StopShellInTerminal(buf)
   endif
-  v9.CheckDefAndScriptFailure(['term_gettty([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_gettty(1, 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_gettty([1])'], ['E1013: Argument 1: type mismatch, expected string but got list<number>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_gettty(1, 2)'], ['E1013: Argument 2: type mismatch, expected bool but got number', 'E1212: Bool required for argument 2'])
 enddef
 
 def Test_term_scrape()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_scrape(1.1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_scrape(1, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_scrape(1.1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_scrape(1, 1.1)'], ['E1013: Argument 2: type mismatch, expected string but got float', 'E1220: String or Number required for argument 2'])
 enddef
 
 def Test_term_sendkeys()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_sendkeys([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_sendkeys(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_sendkeys([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_sendkeys(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
 enddef
 
 def Test_term_setansicolors()
   CheckRunVimInTerminal
 
   if has('termguicolors') || has('gui')
-    v9.CheckDefAndScriptFailure(['term_setansicolors([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-    v9.CheckDefAndScriptFailure(['term_setansicolors(10, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
+    v9.CheckSourceDefAndScriptFailure(['term_setansicolors([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+    v9.CheckSourceDefAndScriptFailure(['term_setansicolors(10, {})'], ['E1013: Argument 2: type mismatch, expected list<any> but got dict<any>', 'E1211: List required for argument 2'])
   else
     throw 'Skipped: Only works with termguicolors or gui feature'
   endif
@@ -4619,27 +4619,27 @@ enddef
 
 def Test_term_setapi()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_setapi([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_setapi(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_setapi([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_setapi(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
 enddef
 
 def Test_term_setkill()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_setkill([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_setkill(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_setkill([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_setkill(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
 enddef
 
 def Test_term_setrestore()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_setrestore([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_setrestore(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_setrestore([], "p")'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_setrestore(1, [])'], ['E1013: Argument 2: type mismatch, expected string but got list<any>', 'E1174: String required for argument 2'])
 enddef
 
 def Test_term_setsize()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_setsize(1.1, 2, 3)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_setsize(1, "2", 3)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['term_setsize(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['term_setsize(1.1, 2, 3)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_setsize(1, "2", 3)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_setsize(1, 2, "3")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
 enddef
 
 def Test_term_start()
@@ -4652,76 +4652,76 @@ def Test_term_start()
     winnr()->assert_equal(winnr)
     bwipe!
   endif
-  v9.CheckDefAndScriptFailure(['term_start({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_start([], [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefAndScriptFailure(['term_start("", "")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
-  v9.CheckDefExecAndScriptFailure(['term_start("")'], 'E474: Invalid argument')
+  v9.CheckSourceDefAndScriptFailure(['term_start({})'], ['E1013: Argument 1: type mismatch, expected string but got dict<any>', 'E1222: String or List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_start([], [])'], ['E1013: Argument 2: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_start("", "")'], ['E1013: Argument 2: type mismatch, expected dict<any> but got string', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefExecAndScriptFailure(['term_start("")'], 'E474: Invalid argument')
 enddef
 
 def Test_term_wait()
   CheckRunVimInTerminal
-  v9.CheckDefAndScriptFailure(['term_wait(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['term_wait(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['term_wait(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1220: String or Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['term_wait(1, "a")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_test_alloc_fail()
-  v9.CheckDefAndScriptFailure(['test_alloc_fail("a", 10, 20)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_alloc_fail(10, "b", 20)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['test_alloc_fail(10, 20, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['test_alloc_fail("a", 10, 20)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_alloc_fail(10, "b", 20)'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['test_alloc_fail(10, 20, "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
 enddef
 
 def Test_test_feedinput()
-  v9.CheckDefAndScriptFailure(['test_feedinput(test_void())'], ['E1013: Argument 1: type mismatch, expected string but got void', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_feedinput(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_feedinput(test_void())'], ['E1013: Argument 1: type mismatch, expected string but got void', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_feedinput(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_test_getvalue()
-  v9.CheckDefAndScriptFailure(['test_getvalue(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_getvalue(1.1)'], ['E1013: Argument 1: type mismatch, expected string but got float', 'E1174: String required for argument 1'])
 enddef
 
 def Test_test_gui_event()
   CheckGui
-  v9.CheckDefAndScriptFailure(['test_gui_event([], {})'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_gui_event("abc", 1)'], ['E1013: Argument 2: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['test_gui_event([], {})'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_gui_event("abc", 1)'], ['E1013: Argument 2: type mismatch, expected dict<any> but got number', 'E1206: Dictionary required for argument 2'])
 enddef
 
 def Test_test_ignore_error()
-  v9.CheckDefAndScriptFailure(['test_ignore_error([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_ignore_error([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
   test_ignore_error('RESET')
 enddef
 
 def Test_test_option_not_set()
-  v9.CheckDefAndScriptFailure(['test_option_not_set([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_option_not_set([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
 enddef
 
 def Test_test_override()
-  v9.CheckDefAndScriptFailure(['test_override(1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_override("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['test_override(1, 1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_override("a", "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_test_setmouse()
-  v9.CheckDefAndScriptFailure(['test_setmouse("a", 10)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_setmouse(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['test_setmouse("a", 10)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_setmouse(10, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_test_settime()
-  v9.CheckDefAndScriptFailure(['test_settime([1])'], ['E1013: Argument 1: type mismatch, expected number but got list<number>', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_settime([1])'], ['E1013: Argument 1: type mismatch, expected number but got list<number>', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_test_srand_seed()
-  v9.CheckDefAndScriptFailure(['test_srand_seed([1])'], ['E1013: Argument 1: type mismatch, expected number but got list<number>', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['test_srand_seed("10")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_srand_seed([1])'], ['E1013: Argument 1: type mismatch, expected number but got list<number>', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['test_srand_seed("10")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_timer_info()
-  v9.CheckDefAndScriptFailure(['timer_info("id")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['timer_info("id")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
   assert_equal([], timer_info(100))
   assert_equal([], timer_info()->filter((_, t) => t.callback->string() !~ 'TestTimeout'))
 enddef
 
 def Test_timer_pause()
-  v9.CheckDefAndScriptFailure(['timer_pause("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['timer_pause(1, "a")'], ['E1013: Argument 2: type mismatch, expected bool but got string', 'E1212: Bool required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['timer_pause("x", 1)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['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()
@@ -4733,31 +4733,31 @@ def Test_timer_paused()
 enddef
 
 def Test_timer_start()
-  v9.CheckDefAndScriptFailure(['timer_start("a", "1")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['timer_start(1, "1", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['timer_start(100, 0)'], 'E921:')
-  v9.CheckDefExecAndScriptFailure(['timer_start(100, "")'], 'E921:')
+  v9.CheckSourceDefAndScriptFailure(['timer_start("a", "1")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['timer_start(1, "1", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefExecAndScriptFailure(['timer_start(100, 0)'], 'E921:')
+  v9.CheckSourceDefExecAndScriptFailure(['timer_start(100, "")'], 'E921:')
 enddef
 
 def Test_timer_stop()
-  v9.CheckDefAndScriptFailure(['timer_stop("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['timer_stop("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
   assert_equal(0, timer_stop(100))
 enddef
 
 def Test_tolower()
-  v9.CheckDefAndScriptFailure(['tolower(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tolower(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   tolower('')->assert_equal('')
 enddef
 
 def Test_toupper()
-  v9.CheckDefAndScriptFailure(['toupper(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['toupper(1)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   toupper('')->assert_equal('')
 enddef
 
 def Test_tr()
-  v9.CheckDefAndScriptFailure(['tr(1, "a", "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['tr("a", 1, "b")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['tr("a", "a", 1)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['tr(1, "a", "b")'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['tr("a", 1, "b")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['tr("a", "a", 1)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
   tr('', '', '')->assert_equal('')
   tr('ab', '', '')->assert_equal('ab')
   assert_fails("tr('ab', 'ab', '')", 'E475:')
@@ -4765,9 +4765,9 @@ def Test_tr()
 enddef
 
 def Test_trim()
-  v9.CheckDefAndScriptFailure(['trim(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['trim("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1174: String required for argument 2'])
-  v9.CheckDefAndScriptFailure(['trim("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['trim(["a"])'], ['E1013: Argument 1: type mismatch, expected string but got list<string>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['trim("a", ["b"])'], ['E1013: Argument 2: type mismatch, expected string but got list<string>', 'E1174: String required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['trim("a", "b", "c")'], ['E1013: Argument 3: type mismatch, expected number but got string', 'E1210: Number required for argument 3'])
   trim('')->assert_equal('')
   trim('', '')->assert_equal('')
 enddef
@@ -4783,26 +4783,30 @@ def Test_typename()
   if has('channel')
     assert_equal('channel', test_null_channel()->typename())
   endif
+  assert_equal('class<Unknown>', typename(null_class))
+  assert_equal('object<Unknown>', typename(null_object))
+  var l: list<func(list<number>): number> = [function('min')]
+  assert_equal('list<func(list<number>): number>', typename(l))
 enddef
 
 def Test_undofile()
-  v9.CheckDefAndScriptFailure(['undofile(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['undofile(10)'], ['E1013: Argument 1: type mismatch, expected string but got number', 'E1174: String required for argument 1'])
   assert_equal('.abc.un~', fnamemodify(undofile('abc'), ':t'))
   undofile('')->assert_equal('')
 enddef
 
 def Test_uniq()
-  v9.CheckDefAndScriptFailure(['uniq("a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['uniq([1], "", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['uniq("a")'], ['E1013: Argument 1: type mismatch, expected list<any> but got string', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['uniq([1], "", [1])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<number>', 'E1206: Dictionary required for argument 3'])
 
-  v9.CheckDefFailure(['var l: list<number> = uniq(["a", "b"])'], 'E1012: Type mismatch; expected list<number> but got list<string>')
+  v9.CheckSourceDefFailure(['var l: list<number> = uniq(["a", "b"])'], 'E1012: Type mismatch; expected list<number> but got list<string>')
 enddef
 
 def Test_utf16idx()
-  v9.CheckDefAndScriptFailure(['utf16idx(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
-  v9.CheckDefAndScriptFailure(['utf16idx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['utf16idx("a", 1, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
-  v9.CheckDefAndScriptFailure(['utf16idx("a", 1, 0, "")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
+  v9.CheckSourceDefAndScriptFailure(['utf16idx(0z10, 1)'], ['E1013: Argument 1: type mismatch, expected string but got blob', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['utf16idx("a", "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['utf16idx("a", 1, "")'], ['E1013: Argument 3: type mismatch, expected bool but got string', 'E1212: Bool required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['utf16idx("a", 1, 0, "")'], ['E1013: Argument 4: type mismatch, expected bool but got string', 'E1212: Bool required for argument 4'])
   utf16idx('', 0)->assert_equal(0)
   utf16idx('', 1)->assert_equal(-1)
 enddef
@@ -4812,11 +4816,11 @@ def Test_uniq_const()
       const l = [1, 2, 3, 4]
       uniq(l)
   END
-  v9.CheckDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
+  v9.CheckSourceDefFailure(lines, 'E1307: Argument 1: Trying to modify a const list<number>')
 enddef
 
 def Test_values()
-  v9.CheckDefAndScriptFailure(['values([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['values([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
   assert_equal([], {}->values())
   assert_equal(['sun'], {star: 'sun'}->values())
 
@@ -4843,20 +4847,20 @@ def Test_values()
 
       Process(D)
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 enddef
 
 def Test_virtcol()
-  v9.CheckDefAndScriptFailure(['virtcol(1.1)'], [
+  v9.CheckSourceDefAndScriptFailure(['virtcol(1.1)'], [
     'E1013: Argument 1: type mismatch, expected string but got float',
     'E1222: String or List required for argument 1'])
-  v9.CheckDefAndScriptFailure(['virtcol(".", "a")'], [
+  v9.CheckSourceDefAndScriptFailure(['virtcol(".", "a")'], [
     'E1013: Argument 2: type mismatch, expected bool but got string',
     'E1212: Bool required for argument 2'])
-  v9.CheckDefAndScriptFailure(['virtcol(".", v:true, [])'], [
+  v9.CheckSourceDefAndScriptFailure(['virtcol(".", v:true, [])'], [
     'E1013: Argument 3: type mismatch, expected number but got list',
     'E1210: Number required for argument 3'])
-  v9.CheckDefExecAndScriptFailure(['virtcol("")'],
+  v9.CheckSourceDefExecAndScriptFailure(['virtcol("")'],
     'E1209: Invalid value for a line number')
   new
   setline(1, ['abcde和平fgh'])
@@ -4872,8 +4876,8 @@ def Test_virtcol()
 enddef
 
 def Test_visualmode()
-  v9.CheckDefAndScriptFailure(['visualmode("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
-  v9.CheckDefAndScriptFailure(['visualmode(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['visualmode("1")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['visualmode(2)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
 enddef
 
 def Test_win_execute()
@@ -4881,29 +4885,29 @@ def Test_win_execute()
   assert_equal("\n" .. winnr(), 'echo winnr()'->win_execute(win_getid()))
   assert_equal("\n" .. winnr(), win_execute(win_getid(), 'echo winnr()', 'silent'))
   assert_equal('', win_execute(342343, 'echo winnr()'))
-  v9.CheckDefAndScriptFailure(['win_execute("a", "b", "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['win_execute(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1222: String or List required for argument 2'])
-  v9.CheckDefAndScriptFailure(['win_execute(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['win_execute("a", "b", "c")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_execute(1, 2, "c")'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1222: String or List required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['win_execute(1, "b", 3)'], ['E1013: Argument 3: type mismatch, expected string but got number', 'E1174: String required for argument 3'])
 enddef
 
 def Test_win_findbuf()
-  v9.CheckDefAndScriptFailure(['win_findbuf("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_findbuf("a")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
   assert_equal([], win_findbuf(1000))
   assert_equal([win_getid()], win_findbuf(bufnr('')))
 enddef
 
 def Test_win_getid()
-  v9.CheckDefAndScriptFailure(['win_getid(".")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['win_getid(1, ".")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['win_getid(".")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_getid(1, ".")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
   assert_equal(win_getid(), win_getid(1, 1))
 enddef
 
 def Test_win_gettype()
-  v9.CheckDefAndScriptFailure(['win_gettype("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_gettype("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_win_gotoid()
-  v9.CheckDefAndScriptFailure(['win_gotoid("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_gotoid("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 func Test_win_gotoid_in_mapping()
@@ -4948,43 +4952,43 @@ func Test_win_gotoid_in_mapping()
 endfunc
 
 def Test_win_id2tabwin()
-  v9.CheckDefAndScriptFailure(['win_id2tabwin("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_id2tabwin("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_win_id2win()
-  v9.CheckDefAndScriptFailure(['win_id2win("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_id2win("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_win_screenpos()
   assert_equal(['x', 'x'], win_screenpos(1)->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['win_screenpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_screenpos("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_win_splitmove()
   split
   win_splitmove(1, 2, {vertical: true, rightbelow: true})
   close
-  v9.CheckDefAndScriptFailure(['win_splitmove("a", 2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['win_splitmove(1, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
-  v9.CheckDefAndScriptFailure(['win_splitmove(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
+  v9.CheckSourceDefAndScriptFailure(['win_splitmove("a", 2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['win_splitmove(1, "b")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['win_splitmove(1, 2, [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 3'])
 enddef
 
 def Test_winbufnr()
-  v9.CheckDefAndScriptFailure(['winbufnr("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['winbufnr("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_winheight()
-  v9.CheckDefAndScriptFailure(['winheight("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['winheight("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_winlayout()
-  v9.CheckDefAndScriptFailure(['winlayout("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['winlayout("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_winnr()
-  v9.CheckDefAndScriptFailure(['winnr([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
-  v9.CheckDefExecAndScriptFailure(['winnr("")'], 'E15: Invalid expression')
+  v9.CheckSourceDefAndScriptFailure(['winnr([])'], ['E1013: Argument 1: type mismatch, expected string but got list<any>', 'E1174: String required for argument 1'])
+  v9.CheckSourceDefExecAndScriptFailure(['winnr("")'], 'E15: Invalid expression')
   assert_equal(1, winnr())
   assert_equal(1, winnr('$'))
 enddef
@@ -4999,7 +5003,7 @@ def Test_winrestcmd()
 enddef
 
 def Test_winrestview()
-  v9.CheckDefAndScriptFailure(['winrestview([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['winrestview([])'], ['E1013: Argument 1: type mismatch, expected dict<any> but got list<any>', 'E1206: Dictionary required for argument 1'])
   :%d _
   setline(1, 'Hello World')
   winrestview({lnum: 1, col: 6})
@@ -5012,20 +5016,20 @@ def Test_winsaveview()
   var lines =<< trim END
       var view: list<number> = winsaveview()
   END
-  v9.CheckDefAndScriptFailure(lines, 'E1012: Type mismatch; expected list<number> but got dict<number>', 1)
+  v9.CheckSourceDefAndScriptFailure(lines, 'E1012: Type mismatch; expected list<number> but got dict<number>', 1)
 enddef
 
 def Test_winwidth()
-  v9.CheckDefAndScriptFailure(['winwidth("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['winwidth("x")'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
 enddef
 
 def Test_xor()
-  v9.CheckDefAndScriptFailure(['xor("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
-  v9.CheckDefAndScriptFailure(['xor(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
+  v9.CheckSourceDefAndScriptFailure(['xor("x", 0x2)'], ['E1013: Argument 1: type mismatch, expected number but got string', 'E1210: Number required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['xor(0x1, "x")'], ['E1013: Argument 2: type mismatch, expected number but got string', 'E1210: Number required for argument 2'])
 enddef
 
 def Test_writefile()
-  v9.CheckDefExecAndScriptFailure(['writefile(["a"], "")'], 'E482: Can''t create file <empty>')
+  v9.CheckSourceDefExecAndScriptFailure(['writefile(["a"], "")'], 'E482: Can''t create file <empty>')
 enddef
 
 def Test_passing_type_to_builtin()
@@ -5045,7 +5049,7 @@ def Test_passing_type_to_builtin()
     x = string(T)
     x = instanceof(C.new(), U, C)
   END
-  v9.CheckScriptSuccess(lines)
+  v9.CheckSourceScriptSuccess(lines)
 
   # check argument to add at script level
   # Note: add() is special cased in compile_call in vim9expr
@@ -5055,7 +5059,7 @@ def Test_passing_type_to_builtin()
     endclass
     add([], C)
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check argument to add in :def
   lines =<< trim END
@@ -5067,7 +5071,7 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to add at script level
   lines =<< trim END
@@ -5076,7 +5080,7 @@ def Test_passing_type_to_builtin()
     endclass
     []->add(C)
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to add in :def
   lines =<< trim END
@@ -5088,7 +5092,7 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # Try "empty()" builtin
   # check argument to empty at script level
@@ -5098,7 +5102,7 @@ def Test_passing_type_to_builtin()
     endclass
     empty(C)
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check argument to empty in :def
   lines =<< trim END
@@ -5110,7 +5114,7 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to empty at script level
   lines =<< trim END
@@ -5119,7 +5123,7 @@ def Test_passing_type_to_builtin()
     endclass
     C->empty()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to empty in :def
   lines =<< trim END
@@ -5131,7 +5135,7 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # Try "abs()" builtin
   # check argument to abs at script level
@@ -5141,7 +5145,7 @@ def Test_passing_type_to_builtin()
     endclass
     abs(C)
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check argument to abs in :def
   lines =<< trim END
@@ -5153,7 +5157,7 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to abs at script level
   lines =<< trim END
@@ -5162,7 +5166,7 @@ def Test_passing_type_to_builtin()
     endclass
     C->abs()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 
   # check member call argument to abs in :def
   lines =<< trim END
@@ -5174,15 +5178,15 @@ def Test_passing_type_to_builtin()
     enddef
     F()
   END
-  v9.CheckScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
+  v9.CheckSourceScriptFailure(lines, 'E1405: Class "C" cannot be used as a value')
 enddef
 
 def Test_getregion()
   assert_equal(['x'], getregion(getpos('.'), getpos('.'))->map((_, _) => 'x'))
 
-  v9.CheckDefAndScriptFailure(['getregion(10, getpos("."))'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
+  v9.CheckSourceDefAndScriptFailure(['getregion(10, getpos("."))'], ['E1013: Argument 1: type mismatch, expected list<any> but got number', 'E1211: List required for argument 1'])
   assert_equal([''], getregion(getpos('.'), getpos('.')))
-  v9.CheckDefExecFailure(['getregion(getpos("a"), getpos("."))'], 'E1209:')
+  v9.CheckSourceDefExecFailure(['getregion(getpos("a"), getpos("."))'], 'E1209:')
 enddef
 
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index d6c55bf..5957f57 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -400,7 +400,7 @@ def Test_class_def_method()
       enddef
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1331: Public must be followed by "var" or "static"', 3)
+  v9.CheckSourceFailure(lines, 'E1388: public keyword not supported for a method', 3)
 
   # Using the "public" keyword when defining a class method
   lines =<< trim END
@@ -410,7 +410,7 @@ def Test_class_def_method()
       enddef
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1388: Public keyword not supported for a method', 3)
+  v9.CheckSourceFailure(lines, 'E1388: public keyword not supported for a method', 3)
 
   # Using the "public" keyword when defining an object protected method
   lines =<< trim END
@@ -420,7 +420,7 @@ def Test_class_def_method()
       enddef
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1331: Public must be followed by "var" or "static"', 3)
+  v9.CheckSourceFailure(lines, 'E1388: public keyword not supported for a method', 3)
 
   # Using the "public" keyword when defining a class protected method
   lines =<< trim END
@@ -430,7 +430,7 @@ def Test_class_def_method()
       enddef
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1388: Public keyword not supported for a method', 3)
+  v9.CheckSourceFailure(lines, 'E1388: public keyword not supported for a method', 3)
 
   # Using a "def" keyword without an object method name
   lines =<< trim END
@@ -1191,7 +1191,7 @@ def Test_instance_variable_access()
       public var _val = 10
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1332: Public variable name cannot start with underscore: public var _val = 10', 3)
+  v9.CheckSourceFailure(lines, 'E1332: public variable name cannot start with underscore: public var _val = 10', 3)
 
   lines =<< trim END
     vim9script
@@ -1287,7 +1287,7 @@ def Test_instance_variable_access()
       public val = 1
     endclass
   END
-  v9.CheckSourceFailure(lines, 'E1331: Public must be followed by "var" or "static"', 3)
+  v9.CheckSourceFailure(lines, 'E1331: public must be followed by "var" or "static"', 3)
 
   # Modify a instance variable using the class name in the script context
   lines =<< trim END
@@ -2275,6 +2275,18 @@ def Test_interface_basics()
   v9.CheckScriptSuccess(lines)
 enddef
 
+" Test for using string() with an interface
+def Test_interface_to_string()
+  var lines =<< trim END
+    vim9script
+    interface Intf
+      def Method(nr: number)
+    endinterface
+    assert_equal("interface Intf", string(Intf))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
 def Test_class_implements_interface()
   var lines =<< trim END
     vim9script
@@ -3109,6 +3121,28 @@ def Test_class_import()
   v9.CheckScriptSuccess(lines)
 enddef
 
+" Test for importing a class into a legacy script and calling the class method
+def Test_class_method_from_legacy_script()
+  var lines =<< trim END
+    vim9script
+    export class A
+      static var name: string = 'a'
+      static def SetName(n: string)
+        name = n
+      enddef
+    endclass
+  END
+  writefile(lines, 'Xvim9export.vim', 'D')
+
+  lines =<< trim END
+    import './Xvim9export.vim' as vim9
+
+    call s:vim9.A.SetName('b')
+    call assert_equal('b', s:vim9.A.name)
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 " Test for implementing an imported interface
 def Test_implement_imported_interface()
   var lines =<< trim END
@@ -3208,6 +3242,23 @@ def Test_abstract_class()
     endclass
   END
   v9.CheckSourceFailure(lines, 'E1359: Cannot define a "new" method in an abstract class', 4)
+
+  # extending an abstract class with class methods and variables
+  lines =<< trim END
+    vim9script
+    abstract class A
+      static var s: string = 'vim'
+      static def Fn(): list<number>
+        return [10]
+      enddef
+    endclass
+    class B extends A
+    endclass
+    var b = B.new()
+    assert_equal('vim', A.s)
+    assert_equal([10], A.Fn())
+  END
+  v9.CheckScriptSuccess(lines)
 enddef
 
 def Test_closure_in_class()
@@ -3729,7 +3780,7 @@ def Test_stack_expansion_with_methods()
     endclass
 
     def F0()
-      assert_match('<SNR>\d\+_F\[1\]\.\.C\.M1\[1\]\.\.<SNR>\d\+_F0\[1\]$', expand('<stack>'))
+      assert_match('<SNR>\d\+_F\[1\]\.\.<SNR>\d\+_C\.M1\[1\]\.\.<SNR>\d\+_F0\[1\]$', expand('<stack>'))
     enddef
 
     def F()
@@ -6486,7 +6537,7 @@ def Test_interface_with_unsupported_members()
       public static var num: number
     endinterface
   END
-  v9.CheckSourceFailure(lines, 'E1387: Public variable not supported in an interface', 3)
+  v9.CheckSourceFailure(lines, 'E1387: public variable not supported in an interface', 3)
 
   lines =<< trim END
     vim9script
@@ -6494,7 +6545,7 @@ def Test_interface_with_unsupported_members()
       public static var num: number
     endinterface
   END
-  v9.CheckSourceFailure(lines, 'E1387: Public variable not supported in an interface', 3)
+  v9.CheckSourceFailure(lines, 'E1387: public variable not supported in an interface', 3)
 
   lines =<< trim END
     vim9script
@@ -10391,6 +10442,23 @@ def Test_compound_op_in_objmethod_lambda()
   v9.CheckScriptSuccess(lines)
 enddef
 
+" Test for using test_refcount() with a class and an object
+def Test_class_object_refcount()
+  var lines =<< trim END
+    vim9script
+    class A
+    endclass
+    var a: A = A.new()
+    assert_equal(2, test_refcount(A))
+    assert_equal(1, test_refcount(a))
+    var b = a
+    assert_equal(2, test_refcount(A))
+    assert_equal(2, test_refcount(a))
+    assert_equal(2, test_refcount(b))
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 " call a lambda function in one object from another object
 def Test_lambda_invocation_across_classes()
   var lines =<< trim END
@@ -10420,4 +10488,154 @@ def Test_lambda_invocation_across_classes()
   v9.CheckScriptSuccess(lines)
 enddef
 
+" Test for using a class member which is an object of the current class
+def Test_current_class_object_class_member()
+  var lines =<< trim END
+    vim9script
+    class A
+      public static var obj1: A = A.new(10)
+      var n: number
+    endclass
+    defcompile
+    assert_equal(10, A.obj1.n)
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
+" Test for updating a base class variable from a base class method without the
+" class name.  This used to crash Vim (Github issue #14352).
+def Test_use_base_class_variable_from_base_class_method()
+  var lines =<< trim END
+    vim9script
+
+    class DictKeyClass
+      static var _obj_id_count = 1
+      def _GenerateKey()
+        _obj_id_count += 1
+      enddef
+      static def GetIdCount(): number
+        return _obj_id_count
+      enddef
+    endclass
+
+    class C extends DictKeyClass
+      def F()
+        this._GenerateKey()
+      enddef
+    endclass
+
+    C.new().F()
+    assert_equal(2, DictKeyClass.GetIdCount())
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
+" Test for accessing protected funcref object and class variables
+def Test_protected_funcref()
+  # protected funcref object variable
+  var lines =<< trim END
+    vim9script
+    class Test1
+      const _Id: func(any): any = (v) => v
+    endclass
+    var n = Test1.new()._Id(1)
+  END
+  v9.CheckScriptFailure(lines, 'E1333: Cannot access protected variable "_Id" in class "Test1"', 5)
+
+  # protected funcref class variable
+  lines =<< trim END
+    vim9script
+    class Test2
+      static const _Id: func(any): any = (v) => v
+    endclass
+    var n = Test2._Id(2)
+  END
+  v9.CheckScriptFailure(lines, 'E1333: Cannot access protected variable "_Id" in class "Test2"', 5)
+enddef
+
+" Test for using lambda block in classes
+def Test_lambda_block_in_class()
+  # This used to crash Vim
+  var lines =<< trim END
+    vim9script
+    class IdClass1
+      const Id: func(number): number = (num: number): number => {
+        # Return a ID
+        return num * 10
+      }
+    endclass
+    var id = IdClass1.new()
+    assert_equal(20, id.Id(2))
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # This used to crash Vim
+  lines =<< trim END
+    vim9script
+    class IdClass2
+      static const Id: func(number): number = (num: number): number => {
+        # Return a ID
+        return num * 2
+      }
+    endclass
+    assert_equal(16, IdClass2.Id(8))
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
+" Test for defcompiling an abstract method
+def Test_abstract_method_defcompile()
+  # Compile an abstract class with abstract object methods
+  var lines =<< trim END
+    vim9script
+    abstract class A
+      abstract def Foo(): string
+      abstract def Bar(): list<string>
+    endclass
+    defcompile
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # Compile a concrete object method in an abstract class
+  lines =<< trim END
+    vim9script
+    abstract class A
+      abstract def Foo(): string
+      abstract def Bar(): list<string>
+      def Baz(): string
+        pass
+      enddef
+    endclass
+    defcompile
+  END
+  v9.CheckScriptFailure(lines, 'E476: Invalid command: pass', 1)
+
+  # Compile a concrete class method in an abstract class
+  lines =<< trim END
+    vim9script
+    abstract class A
+      abstract def Foo(): string
+      abstract def Bar(): list<string>
+      static def Baz(): string
+        pass
+      enddef
+    endclass
+    defcompile
+  END
+  v9.CheckScriptFailure(lines, 'E476: Invalid command: pass', 1)
+enddef
+
+" Test for defining a class in a function
+def Test_class_definition_in_a_function()
+  var lines =<< trim END
+    vim9script
+    def Foo()
+      class A
+      endclass
+    enddef
+    defcompile
+  END
+  v9.CheckScriptFailure(lines, 'E1429: Class can only be used in a script', 1)
+enddef
+
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 1daef22..c74cce4 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -381,6 +381,34 @@ def Test_disassemble_import_autoload()
   v9.CheckScriptSuccess(lines)
 enddef
 
+def Test_disassemble_import_autoload_autoload()
+  mkdir('Xauto_auto/autoload', 'pR')
+  var lines =<< trim END
+    vim9script
+    export const val = 11
+  END
+  writefile(lines, 'Xauto_auto/autoload/Xauto_vars_f1.vim')
+
+  lines =<< trim END
+    vim9script
+
+    import autoload './Xauto_auto/autoload/Xauto_vars_f1.vim' as f1
+    def F()
+        f1.val = 13
+    enddef
+    var res = execute('disass F')
+
+    assert_match('<SNR>\d*_F.*' ..
+      'f1.val = 13\_s*' ..
+      '\d PUSHNR 13\_s*' ..
+      '\d SOURCE .*/Xauto_auto/autoload/Xauto_vars_f1.vim\_s*' ..
+      '\d STOREEXPORT val in .*/Xauto_auto/autoload/Xauto_vars_f1.vim\_s*' ..
+      '\d RETURN void',
+      res)
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 def s:ScriptFuncStore()
   var localnr = 1
   localnr = 2
@@ -1030,7 +1058,7 @@ def Test_disassemble_closure_in_loop()
 
         'endif\_s*' ..
         'g:Ref = () => ii\_s*' ..
-        '\d\+ FUNCREF <lambda>4 vars  $3-$3\_s*' ..
+        '\d\+ FUNCREF <lambda>\d\+ vars  $3-$3\_s*' ..
         '\d\+ STOREG g:Ref\_s*' ..
 
         'continue\_s*' ..
diff --git a/src/testdir/test_vim9_enum.vim b/src/testdir/test_vim9_enum.vim
new file mode 100644
index 0000000..274b556
--- /dev/null
+++ b/src/testdir/test_vim9_enum.vim
@@ -0,0 +1,1537 @@
+" Test Vim9 enums
+
+source check.vim
+import './vim9.vim' as v9
+
+" Test for parsing an enum definition
+def Test_enum_parse()
+  # enum supported only in a Vim9 script
+  var lines =<< trim END
+    enum Foo
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1414: Enum can only be defined in Vim9 script', 1)
+
+  # First character in an enum name should be capitalized.
+  lines =<< trim END
+    vim9script
+    enum foo
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1415: Enum name must start with an uppercase letter: foo', 2)
+
+  # Only alphanumeric characters are supported in an enum name
+  lines =<< trim END
+    vim9script
+    enum Foo@bar
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1315: White space required after name: Foo@bar', 2)
+
+  # Unsupported keyword (instead of enum)
+  lines =<< trim END
+    vim9script
+    noenum Something
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E492: Not an editor command: noenum Something', 2)
+
+  # Only the complete word "enum" should be recognized
+  lines =<< trim END
+    vim9script
+    enums Something
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E492: Not an editor command: enums Something', 2)
+
+  # The complete "endenum" should be specified.
+  lines =<< trim END
+    vim9script
+    enum Something
+    enden
+  END
+  v9.CheckSourceFailure(lines, 'E1065: Command cannot be shortened: enden', 3)
+
+  # Only the complete word "endenum" should be recognized
+  lines =<< trim END
+    vim9script
+    enum Something
+    endenums
+  END
+  v9.CheckSourceFailure(lines, 'E1420: Missing :endenum', 4)
+
+  # all lower case should be used for "enum"
+  lines =<< trim END
+    vim9script
+    Enum Something
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E492: Not an editor command: Enum Something', 2)
+
+  # all lower case should be used for "endenum"
+  lines =<< trim END
+    vim9script
+    enum Something
+    Endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1420: Missing :endenum', 4)
+
+  # Additional words after "endenum"
+  lines =<< trim END
+    vim9script
+    enum Something
+    endenum school's out
+  END
+  v9.CheckSourceFailure(lines, "E488: Trailing characters: school's out", 3)
+
+  # Additional commands after "endenum"
+  lines =<< trim END
+    vim9script
+    enum Something
+    endenum | echo 'done'
+  END
+  v9.CheckSourceFailure(lines, "E488: Trailing characters: | echo 'done'", 3)
+
+  # Try to define enum in a single command
+  lines =<< trim END
+    vim9script
+    enum Something | endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1420: Missing :endenum', 3)
+
+  # Try to define an enum with the same name as an existing variable
+  lines =<< trim END
+    vim9script
+    var Something: list<number> = [1]
+    enum Something
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1041: Redefining script item: "Something"', 3)
+
+  # Unsupported special character following enum name
+  lines =<< trim END
+    vim9script
+    enum Foo
+      first,
+      second : 20
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: : 20', 4)
+
+  # Try initializing an enum item with a number
+  lines =<< trim END
+    vim9script
+    enum Foo
+      first,
+      second = 2
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: = 2', 4)
+
+  # Try initializing an enum item with a String
+  lines =<< trim END
+    vim9script
+    enum Foo
+      first,
+      second = 'second'
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, "E1123: Missing comma before argument: = 'second'", 4)
+
+  # Try initializing an enum item with a List
+  lines =<< trim END
+    vim9script
+    enum Foo
+      first,
+      second = []
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: = []', 4)
+
+  # Use a colon after name
+  lines =<< trim END
+    vim9script
+    enum Foo
+
+      # first
+      first:
+      second
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: :', 5)
+
+  # Use a '=='
+  lines =<< trim END
+    vim9script
+    enum Foo
+      first == 1
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: == 1', 3)
+
+  # Missing comma after an enum item
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury
+      venus
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1419: Not a valid command in an Enum: venus', 4)
+
+  # Comma at the beginning of an item
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury
+      ,venus
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1419: Not a valid command in an Enum: ,venus', 4)
+  # Space before comma
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury ,
+      venus
+    endenum
+  END
+  v9.CheckSourceFailure(lines, "E1068: No white space allowed before ','", 3)
+
+  # No space after comma
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury,venus
+    endenum
+  END
+  v9.CheckSourceFailure(lines, "E1069: White space required after ',': mercury,venus", 3)
+
+  # no comma between items in the same line
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury venus earth
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: venus earth', 3)
+
+  # No space after an item and comment between items
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury
+
+      # Venus
+      venus
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1419: Not a valid command in an Enum: venus', 6)
+
+  # Comma is supported for the last item
+  lines =<< trim END
+    vim9script
+    enum Planet
+      mercury,
+      venus,
+    endenum
+    var p: Planet
+    p = Planet.mercury
+    p = Planet.venus
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # invalid enum value declaration
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      $%@
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1418: Invalid enum value declaration: $%@', 4)
+
+  # Duplicate enum value
+  lines =<< trim END
+    vim9script
+    enum A
+      Foo,
+      Bar,
+      Foo
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1428: Duplicate enum value: Foo', 5)
+
+  # Duplicate enum value in the same line
+  lines =<< trim END
+    vim9script
+    enum A
+      Foo, Bar, Foo,
+      Bar
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1428: Duplicate enum value: Foo', 3)
+
+  # Try extending a class when defining an enum
+  lines =<< trim END
+    vim9script
+    class Foo
+    endclass
+    enum Bar extends Foo
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1416: Enum cannot extend a class or enum', 4)
+
+  # Try extending an enum
+  lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    enum Bar extends Foo
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1416: Enum cannot extend a class or enum', 4)
+
+  # Try extending an enum using a class
+  lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    class Bar extends Foo
+    endclass
+  END
+  v9.CheckSourceFailure(lines, 'E1354: Cannot extend Foo', 5)
+
+  # Try implementing an enum using a class
+  lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    class Bar implements Foo
+    endclass
+  END
+  v9.CheckSourceFailure(lines, 'E1347: Not a valid interface: Foo', 5)
+
+  # abstract method is not supported in an enum
+  lines =<< trim END
+    vim9script
+    enum Foo
+      Apple
+      abstract def Bar()
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1417: Abstract cannot be used in an Enum', 4)
+
+  # Define an enum without any enum values but only with an object variable
+  lines =<< trim END
+    vim9script
+    enum Foo
+      final n: number = 10
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1123: Missing comma before argument: n: number = 10', 3)
+enddef
+
+def Test_basic_enum()
+  # Declare a simple enum
+  var lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    var a: Foo = Foo.apple
+    var b: Foo = Foo.orange
+    assert_equal(a, Foo.apple)
+    assert_equal(b, Foo.orange)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Multiple enums in a single line
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple, orange
+    endenum
+    assert_equal('enum<Foo>', typename(Foo.apple))
+    assert_equal('enum<Foo>', typename(Foo.orange))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Comments and empty lines are supported between enum items
+  lines =<< trim END
+    vim9script
+    enum Foo
+      # Apple
+      apple,
+
+      # Orange
+      orange
+    endenum
+    def Fn()
+      var a: Foo = Foo.apple
+      var b: Foo = Foo.orange
+      assert_equal(a, Foo.apple)
+      assert_equal(b, Foo.orange)
+    enddef
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Try using a non-existing enum value
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    var a: Foo = Foo.pear
+  END
+  v9.CheckSourceFailure(lines, 'E1422: Enum value "pear" not found in enum "Foo"', 6)
+
+  # Enum function argument
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    def Fn(a: Foo): Foo
+      return a
+    enddef
+    assert_equal(Foo.apple, Fn(Foo.apple))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Enum function argument
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    def Fn(a: Foo): Foo
+      return a
+    enddef
+    Fn({})
+  END
+  v9.CheckSourceFailure(lines, 'E1013: Argument 1: type mismatch, expected enum<Foo> but got dict<any>', 9)
+
+  # Returning an enum in a function returning number
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    def Fn(): number
+      return Foo.orange
+    enddef
+    Fn()
+  END
+  v9.CheckSourceFailure(lines, 'E1012: Type mismatch; expected number but got enum<Foo>', 1)
+
+  # Returning a number in a function returning enum
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    def Fn(): Foo
+      return 20
+    enddef
+    Fn()
+  END
+  v9.CheckSourceFailure(lines, 'E1012: Type mismatch; expected enum<Foo> but got number', 1)
+
+  # Use a List of enums
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus,
+      Earth
+    endenum
+    var l1: list<Planet> = [Planet.Mercury, Planet.Venus]
+    assert_equal(Planet.Venus, l1[1])
+    def Fn()
+      var l2: list<Planet> = [Planet.Mercury, Planet.Venus]
+      assert_equal(Planet.Venus, l2[1])
+    enddef
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Try using an enum as a value
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+    var a = Fruit
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Fruit" cannot be used as a value', 6)
+enddef
+
+" Test for type() and typename() of an enum
+def Test_enum_type()
+  var lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+    assert_equal('enum<Fruit>', typename(Fruit))
+    assert_equal('enum<Fruit>', typename(Fruit.Apple))
+    assert_equal(v:t_enum, type(Fruit))
+    assert_equal(v:t_enumvalue, type(Fruit.Apple))
+    assert_equal(15, type(Fruit))
+    assert_equal(16, type(Fruit.Apple))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Assign an enum to a variable with any type
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+    var a = Fruit.Apple
+    var b: any = Fruit.Orange
+    assert_equal('enum<Fruit>', typename(a))
+    assert_equal('enum<Fruit>', typename(b))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Try modifying an enum or an enum item
+def Test_enum_modify()
+  # Try assigning an unsupported value to an enum
+  var lines =<< trim END
+    vim9script
+    enum Foo
+      apple
+    endenum
+    var a: Foo = 30
+  END
+  v9.CheckSourceFailure(lines, 'E1012: Type mismatch; expected enum<Foo> but got number', 5)
+
+  # Try assigning an unsupported value to an enum in a function
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple
+    endenum
+    def Fn()
+      var a: Foo = 30
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1012: Type mismatch; expected enum<Foo> but got number', 1)
+
+  # Try assigning a number to an enum
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple,
+      orange
+    endenum
+    Foo = 10
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Foo" cannot be used as a value', 6)
+
+  # Try assigning a number to an enum in a function
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple
+    endenum
+    def Fn()
+      Foo = 10
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1012: Type mismatch; expected enum<Foo> but got number', 1)
+
+  # Try assigning a number to an enum value
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple
+    endenum
+    Foo.apple = 20
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Foo.apple" cannot be modified', 5)
+
+  # Try assigning a number to an enum value in a function
+  lines =<< trim END
+    vim9script
+    enum Foo
+      apple
+    endenum
+    def Fn()
+      Foo.apple = 20
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Foo.apple" cannot be modified', 1)
+
+  # Try assigning one enum to another
+  lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    enum Bar
+    endenum
+    Foo = Bar
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Bar" cannot be used as a value', 6)
+
+  # Try assigning one enum to another in a function
+  lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    enum Bar
+    endenum
+    def Fn()
+      Foo = Bar
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Bar" cannot be used as a value', 1)
+
+  # Try assigning one enum item to another enum item
+  lines =<< trim END
+    vim9script
+    enum Foo
+      Apple
+    endenum
+    enum Bar
+      Orange
+    endenum
+    Foo.Apple = Bar.Orange
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Foo.Apple" cannot be modified', 8)
+
+  # Try assigning one enum item to another enum item in a function
+  lines =<< trim END
+    vim9script
+    enum Foo
+      Apple
+    endenum
+    enum Bar
+      Orange
+    endenum
+    def Fn()
+      Foo.Apple = Bar.Orange
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Foo.Apple" cannot be modified', 1)
+enddef
+
+" Test for using enum in an expression
+def Test_enum_expr()
+  var lines =<< trim END
+    vim9script
+    enum Color
+      Red, Blue, Green
+    endenum
+    var a: number = 1 + Color
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Color" cannot be used as a value', 5)
+
+  lines =<< trim END
+    vim9script
+    enum Color
+      Red, Blue, Green
+    endenum
+    var a: number = 1 + Color.Red
+  END
+  v9.CheckSourceFailure(lines, 'E1424: Using an Enum "Color" as a Number', 5)
+
+  lines =<< trim END
+    vim9script
+    enum Color
+      Red, Blue, Green
+    endenum
+    var s: string = "abc" .. Color
+  END
+  v9.CheckSourceFailure(lines, 'E1421: Enum "Color" cannot be used as a value', 5)
+
+  lines =<< trim END
+    vim9script
+    enum Color
+      Red, Blue, Green
+    endenum
+    var s: string = "abc" .. Color.Red
+  END
+  v9.CheckSourceFailure(lines, 'E1425: Using an Enum "Color" as a String', 5)
+enddef
+
+" Using an enum in a lambda function
+def Test_enum_lambda()
+  var lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus,
+      Earth,
+    endenum
+    var Fn = (p: Planet): Planet => p
+    for [idx, v] in items([Planet.Mercury, Planet.Venus, Planet.Earth])
+      assert_equal(idx, Fn(v).ordinal)
+    endfor
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Comparison using enums
+def Test_enum_compare()
+  var lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus,
+      Earth,
+    endenum
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+
+    var p: Planet = Planet.Venus
+    var f: Fruit = Fruit.Orange
+    assert_equal(true, p == Planet.Venus)
+    assert_equal(false, p == Planet.Earth)
+    assert_equal(false, p == f)
+    assert_equal(true, Planet.Mercury == Planet.Mercury)
+    assert_equal(true, Planet.Venus != Planet.Earth)
+    assert_equal(true, Planet.Mercury != Fruit.Apple)
+
+    def Fn1()
+      var p2: Planet = Planet.Venus
+      var f2: Fruit = Fruit.Orange
+      assert_equal(true, p2 == Planet.Venus)
+      assert_equal(false, p2 == Planet.Earth)
+      assert_equal(false, p2 == f2)
+    enddef
+    Fn1()
+
+    # comparison using "is" and "isnot"
+    assert_equal(true, p is Planet.Venus)
+    assert_equal(true, p isnot Planet.Earth)
+    assert_equal(false, p is Fruit.Orange)
+    assert_equal(true, p isnot Fruit.Orange)
+    def Fn2(arg: Planet)
+      assert_equal(true, arg is Planet.Venus)
+      assert_equal(true, arg isnot Planet.Earth)
+      assert_equal(false, arg is Fruit.Orange)
+      assert_equal(true, arg isnot Fruit.Orange)
+    enddef
+    Fn2(p)
+
+    class A
+    endclass
+    var o: A = A.new()
+    assert_equal(false, p == o)
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for using an enum as a default argument to a function
+def Test_enum_default_arg()
+  var lines =<< trim END
+    vim9script
+    enum Day
+      Monday, Tuesday, Wednesday
+    endenum
+    def Fn(d: Day = Day.Tuesday): Day
+      return d
+    enddef
+    assert_equal(Day.Tuesday, Fn())
+    assert_equal(Day.Wednesday, Fn(Day.Wednesday))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for enum garbage collection
+func Test_enum_garbagecollect()
+  let lines =<< trim END
+    vim9script
+    enum Car
+      Honda, Ford, Tesla
+    endenum
+    assert_equal(1, Car.Ford.ordinal)
+    call test_garbagecollect_now()
+    assert_equal(1, Car.Ford.ordinal)
+    var c: Car = Car.Tesla
+    assert_equal(2, c.ordinal)
+    call test_garbagecollect_now()
+    assert_equal(2, c.ordinal)
+  END
+  call v9.CheckSourceSuccess(lines)
+
+  " garbage collection with a variable of type any
+  let lines =<< trim END
+    vim9script
+    enum Car
+      Honda, Ford, Tesla
+    endenum
+    call test_garbagecollect_now()
+    var c: any = Car.Tesla
+    call test_garbagecollect_now()
+    assert_equal(Car.Tesla, c)
+  END
+  call v9.CheckSourceSuccess(lines)
+
+  " garbage collection with function arguments and return types
+  let lines =<< trim END
+    vim9script
+    enum Car
+      Honda, Ford, Tesla
+    endenum
+    def Fn(a: Car): Car
+      assert_equal(Car.Ford, a)
+      return Car.Tesla
+    enddef
+    call test_garbagecollect_now()
+    var b: Car = Car.Ford
+    call test_garbagecollect_now()
+    assert_equal(Car.Tesla, Fn(b))
+    call test_garbagecollect_now()
+  END
+  call v9.CheckSourceSuccess(lines)
+endfunc
+
+" Test for the enum values class variable
+def Test_enum_values()
+  var lines =<< trim END
+    vim9script
+    enum Car
+      Honda, Ford, Tesla
+    endenum
+    var l: list<Car> = Car.values
+    assert_equal(Car.Ford, l[1])
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # empty enum
+  lines =<< trim END
+    vim9script
+    enum Car
+    endenum
+    assert_equal([], Car.values)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # single value
+  lines =<< trim END
+    vim9script
+    enum Car
+      Honda
+    endenum
+    assert_equal([Car.Honda], Car.values)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  lines =<< trim END
+    vim9script
+    enum A
+      Red,
+      Blue
+      static def GetValues(): list<A>
+	return values
+      enddef
+    endenum
+    assert_equal([A.Red, A.Blue], A.GetValues())
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Other class variables in an enum should not be added to 'values'
+  lines =<< trim END
+    vim9script
+    enum LogLevel
+      Error, Warn
+      static const x: number = 22
+    endenum
+    assert_equal([LogLevel.Error, LogLevel.Warn], LogLevel.values)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Other class variable of enum type should not be added to 'values'
+  lines =<< trim END
+    vim9script
+    enum LogLevel
+      Error, Warn
+      static const x: LogLevel = LogLevel.Warn
+    endenum
+    assert_equal([LogLevel.Error, LogLevel.Warn], LogLevel.values)
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test comments in enums
+def Test_enum_comments()
+  var lines =<< trim END
+    vim9script
+    enum Car  # cars
+      # before enum
+      Honda,  # honda
+      # before enum
+      Ford    # ford
+    endenum
+    assert_equal(1, Car.Ford.ordinal)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Test for using an unsupported comment
+  lines =<< trim END
+    vim9script
+    enum Car
+      Honda,
+      Ford,
+      #{
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1170: Cannot use #{ to start a comment', 4)
+enddef
+
+" Test string() with enums
+def Test_enum_string()
+  var lines =<< trim END
+    vim9script
+    enum Car
+      Honda,
+      Ford
+    endenum
+    assert_equal("enum Car", string(Car))
+    assert_equal("enum Car.Honda {name: 'Honda', ordinal: 0}", string(Car.Honda))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # customized string function
+  lines =<< trim END
+    vim9script
+    enum Dir
+      North,
+      South
+
+      def string(): string
+        return $'Dir.{this.name}'
+      enddef
+    endenum
+    assert_equal('Dir.North', string(Dir.North))
+    assert_equal('Dir.South', string(Dir.South))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for importing an enum
+def Test_enum_import()
+  var lines =<< trim END
+    vim9script
+    export enum Star
+      Gemini,
+      Orion,
+      Pisces
+    endenum
+  END
+  writefile(lines, 'Xenumexport.vim', 'D')
+
+  lines =<< trim END
+    vim9script
+    import './Xenumexport.vim' as mod
+
+    var s1: mod.Star = mod.Star.Orion
+    assert_equal(true, s1 == mod.Star.Orion)
+    assert_equal(2, mod.Star.Pisces.ordinal)
+    var l1: list<mod.Star> = mod.Star.values
+    assert_equal("enum Star.Orion {name: 'Orion', ordinal: 1}", string(l1[1]))
+    assert_equal(s1, l1[1])
+
+    def Fn()
+      var s2: mod.Star = mod.Star.Orion
+      assert_equal(true, s2 == mod.Star.Orion)
+      assert_equal(2, mod.Star.Pisces.ordinal)
+      var l2: list<mod.Star> = mod.Star.values
+      assert_equal("enum Star.Orion {name: 'Orion', ordinal: 1}", string(l2[1]))
+      assert_equal(s2, l2[1])
+    enddef
+    Fn()
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
+" Test for using test_refcount() with enum
+def Test_enum_refcount()
+  var lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    assert_equal(1, test_refcount(Foo))
+
+    enum Star
+      Gemini,
+      Orion
+    endenum
+    assert_equal(3, test_refcount(Star))
+    assert_equal(2, test_refcount(Star.Gemini))
+    assert_equal(2, test_refcount(Star.Orion))
+
+    var s: Star
+    assert_equal(3, test_refcount(Star))
+    assert_equal(-1, test_refcount(s))
+    s = Star.Orion
+    assert_equal(3, test_refcount(Star))
+    assert_equal(3, test_refcount(s))
+    assert_equal(2, test_refcount(Star.Gemini))
+    var t = s
+    assert_equal(3, test_refcount(Star))
+    assert_equal(4, test_refcount(s))
+    assert_equal(4, test_refcount(Star.Orion))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for defining an enum with additional object variables and methods
+def Test_enum_enhanced()
+  var lines =<< trim END
+    vim9script
+    enum Vehicle
+      car(4, 5, 400),
+      bus(6, 50, 800),
+      bicycle(2, 1, 0)
+
+      final tires: number
+      final passengers: number
+      final carbonPerKilometer: number
+
+      def new(t: number, p: number, cpk: number)
+        this.tires = t
+        this.passengers = p
+        this.carbonPerKilometer = cpk
+      enddef
+
+      def CarbonFootprint(): float
+        return round(this.carbonPerKilometer / this.passengers)
+      enddef
+
+      def IsTwoWheeled(): bool
+        return this == Vehicle.bicycle
+      enddef
+
+      def CompareTo(other: Vehicle): float
+         return this.CarbonFootprint() - other.CarbonFootprint()
+      enddef
+    endenum
+
+    var v: Vehicle = Vehicle.bus
+    assert_equal([6, 50, 800], [v.tires, v.passengers, v.carbonPerKilometer])
+    assert_equal(true, Vehicle.bicycle.IsTwoWheeled())
+    assert_equal(false, Vehicle.car.IsTwoWheeled())
+    assert_equal(16.0, Vehicle.bus.CarbonFootprint())
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for the enum value 'name' variable
+def Test_enum_name()
+  # Check the names of enum values
+  var lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus,
+      Earth
+    endenum
+    assert_equal('Mercury', Planet.Mercury.name)
+    assert_equal('Venus', Planet.Venus.name)
+    assert_equal('Earth', Planet.Earth.name)
+    assert_equal('string', typename(Planet.Earth.name))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Check the name of enum items in the constructor
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury("Mercury"),
+      Venus("Venus"),
+      Earth("Earth")
+
+      def new(s: string)
+        assert_equal(s, this.name)
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Try assigning to the name of an enum
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple
+    endenum
+    Fruit.Apple.name = 'foo'
+  END
+  v9.CheckSourceFailure(lines, 'E1335: Variable "name" in class "Fruit" is not writable', 5)
+
+  # Try assigning to the name of an enum in a function
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple
+    endenum
+    def Fn()
+      Fruit.Apple.name = 'bar'
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Fruit.name" cannot be modified', 1)
+
+  # Try to overwrite an enum value name in the enum constructor
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus
+
+      def new()
+        this.name = 'foo'
+      enddef
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1427: Enum "Planet" name cannot be modified', 1)
+
+  # Try to declare an object variable named 'name'
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury
+      var name: string
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1369: Duplicate variable: name', 4)
+enddef
+
+" Test for the enum value 'ordinal' variable
+def Test_enum_ordinal()
+  # Check the ordinal values of enum items
+  var lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus,
+      Earth
+    endenum
+    assert_equal(0, Planet.Mercury.ordinal)
+    assert_equal(1, Planet.Venus.ordinal)
+    assert_equal(2, Planet.Earth.ordinal)
+    assert_equal('number', typename(Planet.Earth.ordinal))
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Check the ordinal value of enum items in the constructor
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury(0),
+      Venus(1),
+      Earth(2)
+
+      def new(v: number)
+        assert_equal(v, this.ordinal)
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Try assigning to the ordinal value of an enum
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple
+    endenum
+    Fruit.Apple.ordinal = 20
+  END
+  v9.CheckSourceFailure(lines, 'E1335: Variable "ordinal" in class "Fruit" is not writable', 5)
+
+  # Try assigning to the ordinal value of an enum in a function
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple
+    endenum
+    def Fn()
+      Fruit.Apple.ordinal = 20
+    enddef
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E1423: Enum value "Fruit.ordinal" cannot be modified', 1)
+
+  # Try to overwrite an enum value ordinal in the enum constructor
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury,
+      Venus
+
+      def new()
+        this.ordinal = 20
+      enddef
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1426: Enum "Planet" ordinal value cannot be modified', 1)
+
+  # Try to declare an object variable named 'ordinal'
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mercury
+      var ordinal: number
+    endenum
+  END
+  v9.CheckSourceFailure(lines, 'E1369: Duplicate variable: ordinal', 4)
+enddef
+
+" Test for trying to create a new enum object using the constructor
+def Test_enum_invoke_constructor()
+  var lines =<< trim END
+    vim9script
+    enum Foo
+    endenum
+    var f: Foo = Foo.new()
+  END
+  v9.CheckSourceFailure(lines, 'E1325: Method "new" not found in class "Foo"', 4)
+
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+    var f: Fruit = Fruit.new()
+  END
+  v9.CheckSourceFailure(lines, 'E1325: Method "new" not found in class "Fruit"', 6)
+
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+      def newFruit()
+      enddef
+    endenum
+    var f: Fruit = Fruit.newFruit()
+  END
+  v9.CheckSourceFailure(lines, 'E1325: Method "newFruit" not found in class "Fruit"', 8)
+
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+    endenum
+    def Fn()
+      var f: Fruit = Fruit.new()
+    enddef
+    Fn()
+  END
+  v9.CheckSourceFailure(lines, 'E1325: Method "new" not found in class "Fruit"', 1)
+
+  # error in the enum constructor
+  lines =<< trim END
+    vim9script
+    enum Planet
+      earth
+      def new()
+        x = 123
+      enddef
+    endenum
+  END
+  v9.CheckSourceFailureList(lines, ['E1100:', 'E1100:'], 1)
+enddef
+
+" Test for checking "this" in an enum constructor
+def Test_enum_this_in_constructor()
+  var lines =<< trim END
+    vim9script
+    enum A
+      Red("enum A.Red {name: 'Red', ordinal: 0}"),
+      Blue("enum A.Blue {name: 'Blue', ordinal: 1}"),
+      Green("enum A.Green {name: 'Green', ordinal: 2}")
+
+      def new(s: string)
+        assert_equal(s, string(this))
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for using member variables in an enum object
+def Test_enum_object_variable()
+  var lines =<< trim END
+    vim9script
+    enum Planet
+      Jupiter(95),
+      Saturn(146)
+
+      var moons: number
+    endenum
+    assert_equal(95, Planet.Jupiter.moons)
+    assert_equal(146, Planet.Saturn.moons)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Use a final object variable
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Jupiter(95),
+      Saturn(146)
+
+      final moons: number
+      def new(n: number)
+        this.moons = n
+      enddef
+    endenum
+    assert_equal(95, Planet.Jupiter.moons)
+    assert_equal(146, Planet.Saturn.moons)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Use a const object variable
+  lines =<< trim END
+    vim9script
+    enum Planet
+      Mars(false),
+      Jupiter(true)
+
+      const has_ring: bool
+      def new(r: bool)
+        this.has_ring = r
+      enddef
+    endenum
+    assert_equal(false, Planet.Mars.has_ring)
+    assert_equal(true, Planet.Jupiter.has_ring)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Use a regular object variable
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+
+      final farm: string = 'SunValley'
+    endenum
+    assert_equal('SunValley', Fruit.Apple.farm)
+    assert_equal('SunValley', Fruit.Apple.farm)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Invoke the default constructor with an object variable
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple('foo'),
+      Orange('bar')
+
+      final t: string
+    endenum
+    assert_equal('foo', Fruit.Apple.t)
+    assert_equal('bar', Fruit.Orange.t)
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # Invoke the default constructor with an argument but without the object
+  # variable
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange('bar')
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E118: Too many arguments for function: new', 5)
+
+  # Define a default constructor with an argument, but don't pass it in when
+  # defining the enum value
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple(5),
+      Orange
+
+      def new(t: number)
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, 'E119: Not enough arguments for function: new', 8)
+enddef
+
+" Test for using a custom constructor with an enum
+def Test_enum_custom_constructor()
+  # space before "("
+  var lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple(10),
+      Orange (20)
+
+      def new(t: number)
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, "E1068: No white space allowed before '(': Orange (20)", 4)
+
+  # no closing ")"
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple(10),
+      Orange (20
+
+      def new(t: number)
+      enddef
+    endenum
+    defcompile
+  END
+  v9.CheckSourceFailure(lines, "E1068: No white space allowed before '(': Orange (20", 4)
+
+  # Specify constructor arguments split across multiple lines
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple(10,
+            'foo'), Orange(20,
+            'bar'),
+      Pear(30,
+           'baz'), Mango(40,
+           'qux')
+
+      final n: number
+      final s: string
+      def new(t: number, str: string)
+        this.n = t
+        this.s = str
+      enddef
+    endenum
+    defcompile
+    assert_equal([10, 'foo'], [Fruit.Apple.n, Fruit.Apple.s])
+    assert_equal([20, 'bar'], [Fruit.Orange.n, Fruit.Orange.s])
+    assert_equal([30, 'baz'], [Fruit.Pear.n, Fruit.Pear.s])
+    assert_equal([40, 'qux'], [Fruit.Mango.n, Fruit.Mango.s])
+  END
+  v9.CheckSourceSuccess(lines)
+
+  # specify multiple enums with constructor arguments in a single line
+  lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple(10, 'foo'), Orange(20, 'bar'), Pear(30, 'baz'), Mango(40, 'qux')
+      const n: number
+      const s: string
+    endenum
+    defcompile
+    assert_equal([10, 'foo'], [Fruit.Apple.n, Fruit.Apple.s])
+    assert_equal([20, 'bar'], [Fruit.Orange.n, Fruit.Orange.s])
+    assert_equal([30, 'baz'], [Fruit.Pear.n, Fruit.Pear.s])
+    assert_equal([40, 'qux'], [Fruit.Mango.n, Fruit.Mango.s])
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for using class variables in an enum class
+def Test_enum_class_variable()
+  var lines =<< trim END
+    vim9script
+    enum Fruit
+      Apple,
+      Orange
+
+      static var farm: string = 'SunValley'
+    endenum
+    assert_equal('SunValley', Fruit.farm)
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for converting a string to an enum value
+def Test_enum_eval()
+  var lines =<< trim END
+    vim9script
+    enum Color
+      Red,
+      Blue
+    endenum
+    var e = eval('Color.Blue')
+    assert_equal(Color.Blue, e)
+    assert_equal(1, e.ordinal)
+    assert_fails("eval('Color.Green')", 'E1422: Enum value "Green" not found in enum "Color"')
+    assert_fails("var x = eval('Color')", 'E1421: Enum "Color" cannot be used as a value')
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for using "values" in an enum class variable
+def Test_use_enum_values_in_class_variable()
+  var lines =<< trim END
+    vim9script
+    enum Dir
+      North, South
+      static const dirs: list<Dir> = Dir.values
+    endenum
+    assert_equal([Dir.North, Dir.South], Dir.dirs)
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
+" Test for using lambda block in enums
+def Test_lambda_block_in_enum()
+  # This used to crash Vim
+  var lines =<< trim END
+    vim9script
+    enum IdEnum1
+      ID1
+      const Id: func(number): number = (num: number): number => {
+        # Return a ID
+        return num / 2
+      }
+    endenum
+    assert_equal(5, IdEnum1.ID1.Id(10))
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # This used to crash Vim
+  lines =<< trim END
+    vim9script
+    enum IdEnum2
+      ID1
+      static const Id: func(number): number = (num: number): number => {
+        # Return a ID
+        return num + 2
+      }
+    endenum
+    assert_equal(12, IdEnum2.Id(10))
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
+" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 27585a9..b008929 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -166,6 +166,37 @@ def Test_wrong_function_name()
   delfunc g:Define
 enddef
 
+" Check that in a legacy script a :def accesses the correct script variables.
+" Github issue: #14615.
+def Test_access_var_from_legacy_def()
+  # Access a script variable by name WITH "s:" prefix.
+  var lines =<< trim END
+    let s:foo = 'init'
+    let s:xxfoo = 'init'
+    def! AccessVarFromLegacyDef()
+        s:xxfoo = 'CHANGED'
+    enddef
+    call AccessVarFromLegacyDef()
+    call assert_equal('init', s:foo)
+    call assert_equal('CHANGED', s:xxfoo)
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # Access a script variable by name WITHOUT "s:" prefix;
+  # previously this accessed "foo" and not "xxfoo"
+  lines =<< trim END
+    let s:foo = 'init'
+    let s:xxfoo = 'init'
+    def! AccessVarFromLegacyDef()
+        xxfoo = 'CHANGED'
+    enddef
+    call AccessVarFromLegacyDef()
+    call assert_equal('init', s:foo)
+    call assert_equal('CHANGED', s:xxfoo)
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 def Test_listing_function_error()
   var lines =<< trim END
       var filler = 123
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
index fa1aeb1..581925d 100644
--- a/src/testdir/test_vim9_import.vim
+++ b/src/testdir/test_vim9_import.vim
@@ -1140,6 +1140,182 @@ def Test_autoload_import_relative()
   v9.CheckScriptFailure(lines, 'E484:')
 enddef
 
+" autoload relative, access from compiled function.
+" Github issues: #14565, #14579
+def Test_autoload_import_relative_compiled_buffer()
+  var lines =<< trim END
+    vim9script
+
+    export def F1(): string
+        return 'InFile.vim'
+    enddef
+  END
+  writefile(lines, 'Ximportrelativebuffer.vim', 'D')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Ximportrelativebuffer.vim' as xfile
+
+    def F(): string
+      return xfile.F1()
+    enddef
+    assert_equal('InFile.vim', F())
+  END
+  new
+  setline(1, lines)
+  :source
+  # source one more time to detect issues with clearing the script state and
+  # variables
+  :source
+  :bw!
+enddef
+
+" Test for relative import when sourcing a buffer in another directory
+def Test_autoload_import_relative_from_buffer_in_dir()
+  mkdir('Ximportrelative/dir1/dir2', 'pR')
+  var lines =<< trim END
+    vim9script
+
+    export def F1(): string
+        return 'InFile.vim'
+    enddef
+  END
+  writefile(lines, 'Ximportrelative/dir1/dir2/Ximport.vim')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Ximport.vim' as xfile
+
+    def F(): string
+      return xfile.F1()
+    enddef
+    assert_equal('InFile.vim', F())
+  END
+  writefile(lines, 'Ximportrelative/dir1/dir2/Xrelative.vim')
+
+  split Ximportrelative/dir1/dir2/Xrelative.vim
+  :source
+  # source one more time to detect issues with clearing the script state and
+  # variables
+  :source
+  :bw!
+enddef
+
+" Test modifying exported autoload variable. Github issue: #14591
+def Test_autoload_export_variables()
+  mkdir('Xautoload_vars/autoload', 'pR')
+  var lines =<< trim END
+    vim9script
+    g:Xautoload_vars_autoload = true
+    export var val = 11
+    val = 42
+  END
+
+  # Test that the imported script, above, can modify the exported variable;
+  # and test that the importing script, below, can modify the variable.
+  writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f2.vim', 'D')
+  lines =<< trim END
+    vim9script
+    g:Xautoload_vars_autoload = false
+
+    import autoload './Xautoload_vars/autoload/Xauto_vars_f2.vim' as f2
+    # Verify that the import statement does not load the file.
+    assert_equal(false, g:Xautoload_vars_autoload)
+
+    def F(): number
+      return f2.val
+    enddef
+    # Verify compile does not load the file.
+    defcompile F
+    assert_equal(false, g:Xautoload_vars_autoload)
+
+    # load the file by accessing the exported variable
+    assert_equal(42, F())
+    assert_equal(true, g:Xautoload_vars_autoload)
+    unlet g:Xautoload_vars_autoload
+
+    assert_equal(42, f2.val)
+    f2.val = 17
+    assert_equal(17, f2.val)
+
+    def G()
+      f2.val = 19
+    enddef
+    G()
+    assert_equal(19, f2.val)
+  END
+  v9.CheckScriptSuccess(lines)
+
+  # Test const var is not modifiable.
+  lines =<< trim END
+    vim9script
+    export const val = 11
+    val = 42
+  END
+  writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f3.vim', 'D')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Xautoload_vars/autoload/Xauto_vars_f3.vim' as f3
+
+    var x = f3.val
+  END
+  v9.CheckScriptFailure(lines, 'E46:')
+
+  # Test const var is not modifiable from importing script.
+  lines =<< trim END
+    vim9script
+    export const val = 11
+  END
+  writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f4.vim', 'D')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Xautoload_vars/autoload/Xauto_vars_f4.vim' as f4
+
+    f4.val = 13
+  END
+  v9.CheckScriptFailure(lines, 'E46:')
+
+  # Test const var is not modifiable from importing script from :def.
+  # Github issue: #14606
+  lines =<< trim END
+    vim9script
+    export const val = 11
+  END
+  writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f5.vim', 'D')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Xautoload_vars/autoload/Xauto_vars_f5.vim' as f5
+
+    def F()
+      f5.val = 13
+    enddef
+    F()
+  END
+  v9.CheckScriptFailure(lines, 'E741:')
+
+  # Still part of Github issue: #14606
+  lines =<< trim END
+    vim9script
+    export var val = 11
+  END
+  writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f6.vim', 'D')
+  lines =<< trim END
+    vim9script
+
+    import autoload './Xautoload_vars/autoload/Xauto_vars_f6.vim' as f6
+
+    def F()
+      f6.val = 13
+    enddef
+    F()
+    assert_equal(13, f6.val)
+  END
+  v9.CheckScriptSuccess(lines)
+enddef
+
 def Test_autoload_import_relative_autoload_dir()
   mkdir('autoload', 'pR')
   var lines =<< trim END
@@ -2054,6 +2230,13 @@ def Test_import_vim9_from_legacy()
     export def GetText(): string
        return 'text'
     enddef
+    export var exported_nr: number = 22
+    def AddNum(n: number)
+      exported_nr += n
+    enddef
+    export var exportedDict: dict<func> = {Fn: AddNum}
+    export const CONST = 10
+    export final finalVar = 'abc'
   END
   writefile(vim9_lines, 'Xvim9_export.vim', 'D')
 
@@ -2072,6 +2255,13 @@ def Test_import_vim9_from_legacy()
     " imported symbol is script-local
     call assert_equal('exported', s:vim9.exported)
     call assert_equal('text', s:vim9.GetText())
+    call s:vim9.exportedDict.Fn(5)
+    call assert_equal(27, s:vim9.exported_nr)
+    call call(s:vim9.exportedDict.Fn, [3])
+    call assert_equal(30, s:vim9.exported_nr)
+    call assert_fails('let s:vim9.CONST = 20', 'E46: Cannot change read-only variable "CONST"')
+    call assert_fails('let s:vim9.finalVar = ""', 'E46: Cannot change read-only variable "finalVar"')
+    call assert_fails('let s:vim9.non_existing_var = 20', 'E1048: Item not found in script: non_existing_var')
   END
   writefile(legacy_lines, 'Xlegacy_script.vim', 'D')
 
@@ -2916,6 +3106,33 @@ def Test_vim9_import_symlink()
     unlet g:resultValue
     &rtp = save_rtp
     delete('Xfrom', 'rf')
+
+    # Access item from :def imported through symbolic linked directory. #14536
+    mkdir('Xto/real_dir', 'pR')
+    lines =<< trim END
+        vim9script
+        export const val = 17
+        export def F(): number
+          return 23
+        enddef
+    END
+    writefile(lines, 'Xto/real_dir/real_file.vim')
+    system('ln -s real_dir Xto/syml_dir')
+    defer delete('Xto/syml_dir')
+    lines =<< trim END
+      vim9script
+      import autoload './Xto/syml_dir/real_file.vim'
+
+      def Fmain()
+        assert_equal(17, real_file.val)
+      enddef
+      def F2()
+        assert_equal(23, real_file.F())
+      enddef
+      Fmain()
+      F2()
+    END
+    v9.CheckScriptSuccess(lines)
   endif
 enddef
 
@@ -2979,4 +3196,30 @@ def Test_import_autloaded_script()
   &rtp = save_rtp
 enddef
 
+" Test for autoloading an imported dict func
+def Test_autoload_import_dict_func()
+  mkdir('Xdir/autoload', 'pR')
+  var lines =<< trim END
+    vim9script
+    export var al_exported_nr: number = 33
+    def Al_AddNum(n: number)
+      al_exported_nr += n
+    enddef
+    export var al_exportedDict: dict<func> = {Fn: Al_AddNum}
+  END
+  writefile(lines, 'Xdir/autoload/Xdictfunc.vim')
+
+  var save_rtp = &rtp
+  exe 'set rtp^=' .. getcwd() .. '/Xdir'
+  lines =<< trim END
+    import './Xdir/autoload/Xdictfunc.vim'
+    call Xdictfunc#al_exportedDict.Fn(5)
+    call assert_equal(38, Xdictfunc#al_exported_nr)
+    call call(Xdictfunc#al_exportedDict.Fn, [3])
+    call assert_equal(41, Xdictfunc#al_exported_nr)
+  END
+  v9.CheckScriptSuccess(lines)
+  &rtp = save_rtp
+enddef
+
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 77b8831..a3f21be 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -458,7 +458,7 @@ func s:InvokeSomeCommand()
   SomeCommand
 endfunc
 
-def Test_autocommand_block()
+def Test_command_block()
   com SomeCommand {
       g:someVar = 'some'
     }
@@ -469,7 +469,121 @@ def Test_autocommand_block()
   unlet g:someVar
 enddef
 
-def Test_command_block()
+" Test for using heredoc in a :command command block
+def Test_command_block_heredoc()
+  var lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        g:someVar =<< trim END
+          aaa
+          bbb
+        END
+      }
+    SomeCommand
+    assert_equal(['aaa', 'bbb'], g:someVar)
+    def Foo()
+      g:someVar = []
+      SomeCommand
+      assert_equal(['aaa', 'bbb'], g:someVar)
+    enddef
+    Foo()
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess( lines)
+
+  # Execute a command with heredoc in a block
+  lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        g:someVar =<< trim END
+          aaa
+          bbb
+        END
+      }
+    execute('SomeCommand')
+    assert_equal(['aaa', 'bbb'], g:someVar)
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess(lines)
+
+  # Heredoc with comment
+  lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        g:someVar =<< trim END # comment
+          aaa
+          bbb
+        END
+      }
+    execute('SomeCommand')
+    assert_equal(['aaa', 'bbb'], g:someVar)
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess(lines)
+
+  # heredoc evaluation
+  lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        var suffix = '---'
+        g:someVar =<< trim eval END
+          ccc{suffix}
+          ddd
+        END
+      }
+    SomeCommand
+    assert_equal(['ccc---', 'ddd'], g:someVar)
+    def Foo()
+      g:someVar = []
+      SomeCommand
+      assert_equal(['ccc---', 'ddd'], g:someVar)
+    enddef
+    Foo()
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess(lines)
+
+  # command following heredoc
+  lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        var l =<< trim END
+          eee
+          fff
+        END
+        g:someVar = l
+      }
+    SomeCommand
+    assert_equal(['eee', 'fff'], g:someVar)
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess(lines)
+
+  # Error in heredoc
+  lines =<< trim CODE
+    vim9script
+    com SomeCommand {
+        g:someVar =<< trim END
+          eee
+          fff
+      }
+    try
+      SomeCommand
+    catch
+      assert_match("E990: Missing end marker 'END'", v:exception)
+    endtry
+    delcommand SomeCommand
+    unlet g:someVar
+  CODE
+  v9.CheckSourceSuccess(lines)
+enddef
+
+def Test_autocommand_block()
   au BufNew *.xml {
       g:otherVar = 'other'
     }
@@ -4906,7 +5020,7 @@ def Test_for_stmt_space_before_type()
   v9.CheckSourceFailure(lines, 'E1059: No white space allowed before colon: :number in range(10)', 2)
 enddef
 
-" This test used to cause an use-after-free memory access
+" This test used to cause a use-after-free memory access
 def Test_for_empty_line_after_lambda()
   var lines =<< trim END
     vim9script
@@ -4931,6 +5045,16 @@ def Test_for_empty_line_after_lambda()
   v9.CheckSourceSuccess(lines)
 enddef
 
+" Test for evaluating a lambda block from a string
+def Test_eval_lambda_block()
+  var lines =<< trim END
+    vim9script
+    var Fn = eval("(x: number): number => {\nreturn x * 2\n}")
+    assert_equal(6, Fn(3))
+  END
+  v9.CheckSourceSuccess(lines)
+enddef
+
 " Keep this last, it messes up highlighting.
 def Test_substitute_cmd()
   new
diff --git a/src/testdir/test_visual.vim b/src/testdir/test_visual.vim
index fd174a9..adcc3e9 100644
--- a/src/testdir/test_visual.vim
+++ b/src/testdir/test_visual.vim
@@ -1149,7 +1149,7 @@ func Test_visual_inner_block()
   " try to select non-existing inner block
   call cursor(5, 1)
   call assert_beeps('normal ViBiBiB')
-  " try to select a unclosed inner block
+  " try to select an unclosed inner block
   8,9d
   call cursor(5, 1)
   call assert_beeps('normal ViBiB')
diff --git a/src/testdir/test_winfixbuf.vim b/src/testdir/test_winfixbuf.vim
index 04043f8..f800338 100644
--- a/src/testdir/test_winfixbuf.vim
+++ b/src/testdir/test_winfixbuf.vim
@@ -1,6 +1,7 @@
 " Test 'winfixbuf'
 
 source check.vim
+source shared.vim
 
 " Find the number of open windows in the current tab
 func s:get_windows_count()
@@ -199,10 +200,7 @@ func s:reset_all_buffers()
   set nowinfixbuf
 
   call setqflist([])
-
-  for l:window_info in getwininfo()
-    call setloclist(l:window_info["winid"], [])
-  endfor
+  call setloclist(0, [], 'f')
 
   delmarks A-Z0-9
 endfunc
@@ -641,7 +639,7 @@ func Test_caddexpr()
   call s:reset_all_buffers()
 
   let l:file_path = tempname()
-  call writefile(["Error - bad-thing-found"], l:file_path)
+  call writefile(["Error - bad-thing-found"], l:file_path, 'D')
   execute "edit " . l:file_path
   let l:file_buffer = bufnr()
   let l:current = bufnr()
@@ -657,8 +655,6 @@ func Test_caddexpr()
 
   execute 'caddexpr expand("%") .. ":" .. line(".") .. ":" .. getline(".")'
   call assert_equal(l:current, bufnr())
-
-  call delete(l:file_path)
 endfunc
 
 " Fail :cbuffer but :cbuffer! is allowed
@@ -667,7 +663,7 @@ func Test_cbuffer()
   call s:reset_all_buffers()
 
   let l:file_path = tempname()
-  call writefile(["first.unittest:1:Error - bad-thing-found"], l:file_path)
+  call writefile(["first.unittest:1:Error - bad-thing-found"], l:file_path, 'D')
   execute "edit " . l:file_path
   let l:file_buffer = bufnr()
   let l:current = bufnr()
@@ -686,8 +682,6 @@ func Test_cbuffer()
 
   execute "cbuffer! " . l:file_buffer
   call assert_equal("first.unittest", expand("%:t"))
-
-  call delete(l:file_path)
 endfunc
 
 " Allow :cc but the 'nowinfixbuf' window is selected, instead
@@ -1125,6 +1119,150 @@ func Test_edit()
   call assert_equal(l:other, bufnr())
 endfunc
 
+" Fail :e when selecting a buffer from a relative path if in a different folder
+"
+" In this tests there's 2 buffers
+"
+" foo - lives on disk, in some folder. e.g. /tmp/foo
+" foo - an in-memory buffer that has not been saved to disk. If saved, it
+"       would live in a different folder, /other/foo.
+"
+" The 'winfixbuf' is looking at the in-memory buffer and trying to switch to
+" the buffer on-disk (and fails, because it's a different buffer)
+func Test_edit_different_buffer_on_disk_and_relative_path_to_disk()
+  call s:reset_all_buffers()
+
+  let l:file_on_disk = tempname()
+  let l:directory_on_disk1 = fnamemodify(l:file_on_disk, ":p:h")
+  let l:name = fnamemodify(l:file_on_disk, ":t")
+  execute "edit " . l:file_on_disk
+  write!
+
+  let l:directory_on_disk2 = l:directory_on_disk1 . "_something_else"
+
+  if !isdirectory(l:directory_on_disk2)
+    call mkdir(l:directory_on_disk2)
+  endif
+
+  execute "cd " . l:directory_on_disk2
+  execute "edit " l:name
+
+  let l:current = bufnr()
+
+  call assert_equal(l:current, bufnr())
+  set winfixbuf
+  call assert_fails("edit " . l:file_on_disk, "E1513:")
+  call assert_equal(l:current, bufnr())
+
+  call delete(l:directory_on_disk1)
+  call delete(l:directory_on_disk2)
+endfunc
+
+" Fail :e when selecting a buffer from a relative path if in a different folder
+"
+" In this tests there's 2 buffers
+"
+" foo - lives on disk, in some folder. e.g. /tmp/foo
+" foo - an in-memory buffer that has not been saved to disk. If saved, it
+"       would live in a different folder, /other/foo.
+"
+" The 'winfixbuf' is looking at the on-disk buffer and trying to switch to
+" the in-memory buffer (and fails, because it's a different buffer)
+func Test_edit_different_buffer_on_disk_and_relative_path_to_memory()
+  call s:reset_all_buffers()
+
+  let l:file_on_disk = tempname()
+  let l:directory_on_disk1 = fnamemodify(l:file_on_disk, ":p:h")
+  let l:name = fnamemodify(l:file_on_disk, ":t")
+  execute "edit " . l:file_on_disk
+  write!
+
+  let l:directory_on_disk2 = l:directory_on_disk1 . "_something_else"
+
+  if !isdirectory(l:directory_on_disk2)
+    call mkdir(l:directory_on_disk2)
+  endif
+
+  execute "cd " . l:directory_on_disk2
+  execute "edit " l:name
+  execute "cd " . l:directory_on_disk1
+  execute "edit " l:file_on_disk
+  execute "cd " . l:directory_on_disk2
+
+  let l:current = bufnr()
+
+  call assert_equal(l:current, bufnr())
+  set winfixbuf
+  call assert_fails("edit " . l:name, "E1513:")
+  call assert_equal(l:current, bufnr())
+
+  call delete(l:directory_on_disk1)
+  call delete(l:directory_on_disk2)
+endfunc
+
+" Fail to call `:e first` if called from a starting, in-memory buffer
+func Test_edit_first_buffer()
+  call s:reset_all_buffers()
+
+  set winfixbuf
+  let l:current = bufnr()
+
+  call assert_fails("edit first", "E1513:")
+  call assert_equal(l:current, bufnr())
+
+  edit! first
+  call assert_equal(l:current, bufnr())
+  edit! somewhere_else
+  call assert_notequal(l:current, bufnr())
+endfunc
+
+" Allow reloading a buffer using :e
+func Test_edit_no_arguments()
+  call s:reset_all_buffers()
+
+  let l:current = bufnr()
+  file some_buffer
+
+  call assert_equal(l:current, bufnr())
+  set winfixbuf
+  edit
+  call assert_equal(l:current, bufnr())
+endfunc
+
+" Allow :e selecting the current buffer
+func Test_edit_same_buffer_in_memory()
+  call s:reset_all_buffers()
+
+  let current = bufnr()
+  file same_buffer
+
+  call assert_equal(current, bufnr())
+  set winfixbuf
+  edit same_buffer
+  call assert_equal(current, bufnr())
+  set nowinfixbuf
+endfunc
+
+" Allow :e selecting the current buffer as a full path
+func Test_edit_same_buffer_on_disk_absolute_path()
+  call s:reset_all_buffers()
+
+  let file = tempname()
+  " file must exist for expansion of 8.3 paths to succeed
+  call writefile([], file, 'D')
+  let file = fnamemodify(file, ':p')
+  let current = bufnr()
+  execute "edit " . file
+  write!
+
+  call assert_equal(current, bufnr())
+  set winfixbuf
+  execute "edit " file
+  call assert_equal(current, bufnr())
+
+  set nowinfixbuf
+endfunc
+
 " Fail :enew but :enew! is allowed
 func Test_enew()
   call s:reset_all_buffers()
@@ -1160,7 +1298,7 @@ func Test_find()
 
   let l:current = bufnr()
   let l:file = tempname()
-  call writefile([], l:file)
+  call writefile([], l:file, 'D')
   let l:file = fnamemodify(l:file, ':p')  " In case it's Windows 8.3-style.
   let l:directory = fnamemodify(l:file, ":p:h")
   let l:name = fnamemodify(l:file, ":p:t")
@@ -1177,7 +1315,6 @@ func Test_find()
   call assert_equal(l:file, expand("%:p"))
 
   execute "set path=" . l:original_path
-  call delete(l:file)
 endfunc
 
 " Fail :first but :first! is allowed
@@ -1238,8 +1375,8 @@ func Test_ijump()
   call writefile([
         \ '#include "' . l:include_file . '"'
         \ ],
-        \ "main.c")
-  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file)
+        \ "main.c", 'D')
+  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file, 'D')
   edit main.c
 
   set winfixbuf
@@ -1261,8 +1398,6 @@ func Test_ijump()
   set define&
   set include&
   set path&
-  call delete("main.c")
-  call delete(l:include_file)
 endfunc
 
 " Fail :lNext but :lNext! is allowed
@@ -1327,7 +1462,7 @@ func Test_laddexpr()
   call s:reset_all_buffers()
 
   let l:file_path = tempname()
-  call writefile(["Error - bad-thing-found"], l:file_path)
+  call writefile(["Error - bad-thing-found"], l:file_path, 'D')
   execute "edit " . l:file_path
   let l:file_buffer = bufnr()
   let l:current = bufnr()
@@ -1343,8 +1478,6 @@ func Test_laddexpr()
 
   execute 'laddexpr expand("%") .. ":" .. line(".") .. ":" .. getline(".")'
   call assert_equal(l:current, bufnr())
-
-  call delete(l:file_path)
 endfunc
 
 " Fail :last but :last! is allowed
@@ -1367,7 +1500,7 @@ func Test_lbuffer()
   call s:reset_all_buffers()
 
   let l:file_path = tempname()
-  call writefile(["first.unittest:1:Error - bad-thing-found"], l:file_path)
+  call writefile(["first.unittest:1:Error - bad-thing-found"], l:file_path, 'D')
   execute "edit " . l:file_path
   let l:file_buffer = bufnr()
   let l:current = bufnr()
@@ -1386,8 +1519,6 @@ func Test_lbuffer()
 
   execute "lbuffer! " . l:file_buffer
   call assert_equal("first.unittest", expand("%:t"))
-
-  call delete(l:file_path)
 endfunc
 
 " Fail :ldo but :ldo! is allowed
@@ -1451,7 +1582,7 @@ func Test_lfile()
   write
 
   let l:file = tempname()
-  call writefile(["first.unittest:1:Error - bad-thing-found was detected"], l:file)
+  call writefile(["first.unittest:1:Error - bad-thing-found was detected"], l:file, 'D')
 
   let l:current = bufnr()
 
@@ -1463,7 +1594,6 @@ func Test_lfile()
   execute ":lfile! " . l:file
   call assert_equal(l:first, bufnr())
 
-  call delete(l:file)
   call delete("first.unittest")
   call delete("second.unittest")
 endfunc
@@ -1603,9 +1733,9 @@ func Test_ltag()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
   execute "normal \<C-]>"
 
@@ -1618,9 +1748,6 @@ func Test_ltag()
   ltag! one
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail vim.command if we try to change buffers while 'winfixbuf' is set
@@ -1826,9 +1953,9 @@ func Test_normal_g_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -1839,9 +1966,6 @@ func Test_normal_g_ctrl_square_bracket_right()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with g<RightMouse> if 'winfixbuf' is enabled
@@ -1854,9 +1978,9 @@ func Test_normal_g_rightmouse()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
   execute "normal \<C-]>"
 
@@ -1869,9 +1993,6 @@ func Test_normal_g_rightmouse()
 
   set tags&
   set mouse&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with g] if 'winfixbuf' is enabled
@@ -1883,9 +2004,9 @@ func Test_normal_g_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -1896,9 +2017,6 @@ func Test_normal_g_square_bracket_right()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with <C-RightMouse> if 'winfixbuf' is enabled
@@ -1911,9 +2029,9 @@ func Test_normal_ctrl_rightmouse()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
   execute "normal \<C-]>"
 
@@ -1926,9 +2044,6 @@ func Test_normal_ctrl_rightmouse()
 
   set tags&
   set mouse&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with <C-t> if 'winfixbuf' is enabled
@@ -1940,9 +2055,9 @@ func Test_normal_ctrl_t()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
   execute "normal \<C-]>"
 
@@ -1954,9 +2069,6 @@ func Test_normal_ctrl_t()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Disallow <C-^> in 'winfixbuf' windows
@@ -2058,9 +2170,9 @@ func Test_normal_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2071,9 +2183,6 @@ func Test_normal_ctrl_square_bracket_right()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Allow <C-w><C-]> with 'winfixbuf' enabled because it runs in a new, split window
@@ -2085,9 +2194,9 @@ func Test_normal_ctrl_w_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2097,9 +2206,6 @@ func Test_normal_ctrl_w_ctrl_square_bracket_right()
   call assert_equal(l:current_windows + 1, s:get_windows_count())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Allow <C-w>g<C-]> with 'winfixbuf' enabled because it runs in a new, split window
@@ -2111,9 +2217,9 @@ func Test_normal_ctrl_w_g_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2123,9 +2229,6 @@ func Test_normal_ctrl_w_g_ctrl_square_bracket_right()
   call assert_equal(l:current_windows + 1, s:get_windows_count())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with <C-]> if 'winfixbuf' is enabled
@@ -2137,9 +2240,9 @@ func Test_normal_gt()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one", "two", "three"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one", "two", "three"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2150,9 +2253,6 @@ func Test_normal_gt()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Prevent gF from switching a 'winfixbuf' window's buffer
@@ -2161,7 +2261,7 @@ func Test_normal_gF()
 
   let l:file = tempname()
   call append(0, [l:file])
-  call writefile([], l:file)
+  call writefile([], l:file, 'D')
   " Place the cursor onto the line that has `l:file`
   normal gg
   " Prevent Vim from erroring with "No write since last change @ command
@@ -2180,7 +2280,7 @@ func Test_normal_gF()
   normal gF
   call assert_notequal(l:buffer, bufnr())
 
-  call delete(l:file)
+  set nohidden
 endfunc
 
 " Prevent gf from switching a 'winfixbuf' window's buffer
@@ -2189,7 +2289,7 @@ func Test_normal_gf()
 
   let l:file = tempname()
   call append(0, [l:file])
-  call writefile([], l:file)
+  call writefile([], l:file, 'D')
   " Place the cursor onto the line that has `l:file`
   normal gg
   " Prevent Vim from erroring with "No write since last change @ command
@@ -2208,7 +2308,7 @@ func Test_normal_gf()
   normal gf
   call assert_notequal(l:buffer, bufnr())
 
-  call delete(l:file)
+  set nohidden
 endfunc
 
 " Fail "goto file under the cursor" (using [f, which is the same as `:normal gf`)
@@ -2217,7 +2317,7 @@ func Test_normal_square_bracket_left_f()
 
   let l:file = tempname()
   call append(0, [l:file])
-  call writefile([], l:file)
+  call writefile([], l:file, 'D')
   " Place the cursor onto the line that has `l:file`
   normal gg
   " Prevent Vim from erroring with "No write since last change @ command
@@ -2236,7 +2336,7 @@ func Test_normal_square_bracket_left_f()
   normal [f
   call assert_notequal(l:buffer, bufnr())
 
-  call delete(l:file)
+  set nohidden
 endfunc
 
 " Fail to go to a C macro with [<C-d> if 'winfixbuf' is enabled
@@ -2247,8 +2347,8 @@ func Test_normal_square_bracket_left_ctrl_d()
   call writefile(["min(1, 12);",
         \ '#include "' . l:include_file . '"'
         \ ],
-        \ "main.c")
-  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file)
+        \ "main.c", 'D')
+  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file, 'D')
   edit main.c
   normal ]\<C-d>
 
@@ -2263,9 +2363,6 @@ func Test_normal_square_bracket_left_ctrl_d()
 
   execute "normal [\<C-d>"
   call assert_notequal(l:current, bufnr())
-
-  call delete("main.c")
-  call delete(l:include_file)
 endfunc
 
 " Fail to go to a C macro with ]<C-d> if 'winfixbuf' is enabled
@@ -2276,8 +2373,8 @@ func Test_normal_square_bracket_right_ctrl_d()
   call writefile(["min(1, 12);",
         \ '#include "' . l:include_file . '"'
         \ ],
-        \ "main.c")
-  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file)
+        \ "main.c", 'D')
+  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file, 'D')
   edit main.c
 
   set winfixbuf
@@ -2291,9 +2388,6 @@ func Test_normal_square_bracket_right_ctrl_d()
 
   execute "normal ]\<C-d>"
   call assert_notequal(l:current, bufnr())
-
-  call delete("main.c")
-  call delete(l:include_file)
 endfunc
 
 " Fail to go to a C macro with [<C-i> if 'winfixbuf' is enabled
@@ -2304,8 +2398,8 @@ func Test_normal_square_bracket_left_ctrl_i()
   call writefile(['#include "' . l:include_file . '"',
         \ "min(1, 12);",
         \ ],
-        \ "main.c")
-  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file)
+        \ "main.c", 'D')
+  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file, 'D')
   edit main.c
   " Move to the line with `min(1, 12);` on it"
   normal j
@@ -2328,8 +2422,6 @@ func Test_normal_square_bracket_left_ctrl_i()
   set define&
   set include&
   set path&
-  call delete("main.c")
-  call delete(l:include_file)
 endfunc
 
 " Fail to go to a C macro with ]<C-i> if 'winfixbuf' is enabled
@@ -2340,8 +2432,8 @@ func Test_normal_square_bracket_right_ctrl_i()
   call writefile(["min(1, 12);",
         \ '#include "' . l:include_file . '"'
         \ ],
-        \ "main.c")
-  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file)
+        \ "main.c", 'D')
+  call writefile(["#define min(X, Y)  ((X) < (Y) ? (X) : (Y))"], l:include_file, 'D')
   edit main.c
 
   set winfixbuf
@@ -2363,8 +2455,6 @@ func Test_normal_square_bracket_right_ctrl_i()
   set define&
   set include&
   set path&
-  call delete("main.c")
-  call delete(l:include_file)
 endfunc
 
 " Fail "goto file under the cursor" (using ]f, which is the same as `:normal gf`)
@@ -2373,7 +2463,7 @@ func Test_normal_square_bracket_right_f()
 
   let l:file = tempname()
   call append(0, [l:file])
-  call writefile([], l:file)
+  call writefile([], l:file, 'D')
   " Place the cursor onto the line that has `l:file`
   normal gg
   " Prevent Vim from erroring with "No write since last change @ command
@@ -2392,7 +2482,7 @@ func Test_normal_square_bracket_right_f()
   normal ]f
   call assert_notequal(l:buffer, bufnr())
 
-  call delete(l:file)
+  set nohidden
 endfunc
 
 " Fail to jump to a tag with v<C-]> if 'winfixbuf' is enabled
@@ -2404,9 +2494,9 @@ func Test_normal_v_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2417,9 +2507,6 @@ func Test_normal_v_ctrl_square_bracket_right()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail to jump to a tag with vg<C-]> if 'winfixbuf' is enabled
@@ -2431,9 +2518,9 @@ func Test_normal_v_g_ctrl_square_bracket_right()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2444,9 +2531,6 @@ func Test_normal_v_g_ctrl_square_bracket_right()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Allow :pedit because, unlike :edit, it uses a separate window
@@ -2471,9 +2555,9 @@ func Test_pop()
         \ "thesame\tXfile\t2;\"\td\tfile:",
         \ "thesame\tXfile\t3;\"\td\tfile:",
         \ ],
-        \ "Xtags")
-  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile")
-  call writefile(["thesame one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile", 'D')
+  call writefile(["thesame one"], "Xother", 'D')
   edit Xother
 
   tag thesame
@@ -2489,9 +2573,6 @@ func Test_pop()
   call assert_notequal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail :previous but :previous! is allowed
@@ -2559,7 +2640,7 @@ func Test_pythonx_pyxfile()
         \ "buffer = vim.vars['_previous_buffer']",
         \ "vim.current.buffer = vim.buffers[buffer]",
         \ ],
-        \ "file.py")
+        \ "file.py", 'D')
 
   try
     pyxfile file.py
@@ -2569,7 +2650,6 @@ func Test_pythonx_pyxfile()
 
   call assert_equal(1, l:caught)
 
-  call delete("file.py")
   unlet g:_previous_buffer
 endfunc
 
@@ -2696,11 +2776,11 @@ func Test_short_option()
   call s:make_buffer_pairs()
 
   set winfixbuf
-  call assert_fails("edit something_else", "E1513")
+  call assert_fails("edit something_else", "E1513:")
 
   set nowinfixbuf
   set wfb
-  call assert_fails("edit another_place", "E1513")
+  call assert_fails("edit another_place", "E1513:")
 
   set nowfb
   edit last_place
@@ -2747,9 +2827,9 @@ func Test_tNext()
         \ "thesame\tXfile\t2;\"\td\tfile:",
         \ "thesame\tXfile\t3;\"\td\tfile:",
         \ ],
-        \ "Xtags")
-  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile")
-  call writefile(["thesame one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile", 'D')
+  call writefile(["thesame one"], "Xother", 'D')
   edit Xother
 
   tag thesame
@@ -2766,9 +2846,6 @@ func Test_tNext()
   tNext!
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Call :tabdo and choose the next available 'nowinfixbuf' window.
@@ -2826,9 +2903,9 @@ func Test_tag()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2842,9 +2919,6 @@ func Test_tag()
   call assert_notequal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 
@@ -2857,9 +2931,9 @@ func Test_tfirst()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2873,9 +2947,6 @@ func Test_tfirst()
   call assert_notequal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail :tjump but :tjump! is allowed
@@ -2887,9 +2958,9 @@ func Test_tjump()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
-  call writefile(["one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
+  call writefile(["one"], "Xother", 'D')
   edit Xother
 
   set winfixbuf
@@ -2903,9 +2974,6 @@ func Test_tjump()
   call assert_notequal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail :tlast but :tlast! is allowed
@@ -2917,8 +2985,8 @@ func Test_tlast()
         \ "one\tXfile\t1",
         \ "three\tXfile\t3",
         \ "two\tXfile\t2"],
-        \ "Xtags")
-  call writefile(["one", "two", "three"], "Xfile")
+        \ "Xtags", 'D')
+  call writefile(["one", "two", "three"], "Xfile", 'D')
   edit Xfile
   tjump one
   edit Xfile
@@ -2934,8 +3002,6 @@ func Test_tlast()
   call assert_equal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
 endfunc
 
 " Fail :tnext but :tnext! is allowed
@@ -2948,9 +3014,9 @@ func Test_tnext()
         \ "thesame\tXfile\t2;\"\td\tfile:",
         \ "thesame\tXfile\t3;\"\td\tfile:",
         \ ],
-        \ "Xtags")
-  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile")
-  call writefile(["thesame one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile", 'D')
+  call writefile(["thesame one"], "Xother", 'D')
   edit Xother
 
   tag thesame
@@ -2967,9 +3033,6 @@ func Test_tnext()
   call assert_notequal(l:current, bufnr())
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail :tprevious but :tprevious! is allowed
@@ -2982,9 +3045,9 @@ func Test_tprevious()
         \ "thesame\tXfile\t2;\"\td\tfile:",
         \ "thesame\tXfile\t3;\"\td\tfile:",
         \ ],
-        \ "Xtags")
-  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile")
-  call writefile(["thesame one"], "Xother")
+        \ "Xtags", 'D')
+  call writefile(["thesame one", "thesame two", "thesame three"], "Xfile", 'D')
+  call writefile(["thesame one"], "Xother", 'D')
   edit Xother
 
   tag thesame
@@ -3001,9 +3064,6 @@ func Test_tprevious()
   tprevious!
 
   set tags&
-  call delete("Xtags")
-  call delete("Xfile")
-  call delete("Xother")
 endfunc
 
 " Fail :view but :view! is allowed
@@ -3283,4 +3343,15 @@ func Test_bufdo_cnext_splitwin_fails()
   set winminheight&vim winheight&vim
 endfunc
 
+" Test that exiting with 'winfixbuf' and EXITFREE doesn't cause an error.
+func Test_exitfree_no_error()
+  let lines =<< trim END
+    set winfixbuf
+    qall!
+  END
+  call writefile(lines, 'Xwfb_exitfree', 'D')
+  call assert_notmatch('E1513:',
+        \ system(GetVimCommandClean() .. ' --not-a-term -X -S Xwfb_exitfree'))
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_xdg.vim b/src/testdir/test_xdg.vim
new file mode 100644
index 0000000..6f35b72
--- /dev/null
+++ b/src/testdir/test_xdg.vim
@@ -0,0 +1,295 @@
+" Tests for the XDG feature
+
+source check.vim
+source shared.vim
+
+func s:get_rcs()
+  let rcs = {
+        \ 'file1': { 'path': '~/.vimrc' },
+        \ 'file2': { 'path': '~/.vim/vimrc' },
+        \ 'xdg': { 'path': exists('$XDG_CONFIG_HOME') ? '$XDG_CONFIG_HOME' : "~/.config" },
+        \}
+  for v in values(rcs)
+    let v.exists = filereadable(expand(v.path))
+  endfor
+  return rcs
+endfunc
+
+func Test_xdg_rc_detection()
+  CheckUnix
+  let rc = s:get_rcs()
+  let before =<< trim CODE
+    call writefile([expand('$MYVIMRC')], "XMY_VIMRC")
+    quit!
+  CODE
+  call RunVim(before, [], "")
+  let my_rc = readfile("XMY_VIMRC")
+  if rc.file1.exists
+    call assert_equal(rc.file1.path, my_rc)
+  elseif !rc.file1.exists && rc.file2.exists
+    call assert_equal(rc.file2.path, my_rc)
+  elseif !rc.file1.exists && !rc.file2.exists && rc.xdg.exists
+    call assert_equal(rc.xdg.path, my_rc)
+  endif
+  call delete("XMY_VIMRC")
+endfunc
+
+func Test_xdg_runtime_files()
+  " This tests, that the initialization file from
+  " ~/.vimrc, ~/.vim/vimrc and ~/.config/vim/vimrc (or
+  " $XDG_CONFIG_HOME/vim/vimrc) are sourced in that order
+  CheckUnix
+  call mkdir(expand('~/.vim/'), 'pD')
+  call mkdir(expand('~/.config/vim/'), 'pD')
+  call mkdir(expand('~/xdg/vim/'), 'pD')
+
+  let rc1=expand('~/.vimrc')
+  let rc2=expand('~/.vim/vimrc')
+  let rc3=expand('~/.config/vim/vimrc')
+  let rc4=expand('~/xdg/vim/vimrc')
+
+  " g:rc_one|two|three|four is to verify, that the other
+  " init files are not sourced
+  " g:rc is to verify which rc file has been loaded.
+  let file1 =<< trim CODE
+    let g:rc_one = 'one'
+    let g:rc = '.vimrc'
+  CODE
+  let file2 =<< trim CODE
+    let g:rc_two = 'two'
+    let g:rc = '.vim/vimrc'
+  CODE
+  let file3 =<< trim CODE
+    let g:rc_three = 'three'
+    let g:rc = '.config/vim/vimrc'
+  CODE
+  let file4 =<< trim CODE
+    let g:rc_four = 'four'
+    let g:rc = 'xdg/vim/vimrc'
+  CODE
+  call writefile(file1, rc1)
+  call writefile(file2, rc2)
+  call writefile(file3, rc3)
+  call writefile(file4, rc4)
+
+  " Get the Vim command to run without the '-u NONE' argument
+  let vimcmd = substitute(GetVimCommand(), '-u NONE', '', '')
+
+  " Test for ~/.vimrc
+  let lines =<< trim END
+    call assert_match('XfakeHOME/\.vimrc', $MYVIMRC)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_one: 'one', rc: '.vimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc1)
+
+  " Test for ~/.vim/vimrc
+  let lines =<< trim END
+    call assert_match('XfakeHOME/\.vim/vimrc', $MYVIMRC)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_two: 'two', rc: '.vim/vimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc2)
+
+  " XDG_CONFIG_HOME is set in Github CI runners
+  unlet $XDG_CONFIG_HOME
+
+  " Test for ~/.config/vim/vimrc
+  let lines =<< trim END
+    let msg = $'HOME="{$HOME}", ~="{expand("~")}"'
+    call assert_match('XfakeHOME/\.config/vim/vimrc', $MYVIMRC, msg)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_three: 'three', rc: '.config/vim/vimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc3)
+
+  " Test for ~/xdg/vim/vimrc
+  let $XDG_CONFIG_HOME=expand('~/xdg/')
+  let lines =<< trim END
+    let msg = $'HOME="{$HOME}", XDG_CONFIG_HOME="{$XDG_CONFIG_HOME}"'
+    call assert_match('XfakeHOME/xdg/vim/vimrc', $MYVIMRC, msg)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_four: 'four', rc: 'xdg/vim/vimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc4)
+  unlet $XDG_CONFIG_HOME
+endfunc
+
+func Test_xdg_version()
+  CheckUnix
+  let $HOME = getcwd() .. '/XfakeHOME'
+  unlet $XDG_CONFIG_HOME
+  let a = execute(':version')->split('\n')
+  let a = filter(a, { _, val -> val =~ '\.config\|XDG_CONFIG_HOME' })
+  " There should be 1 entry for gvimrc and 1 entry for vimrc,
+  " but only if Vim was compiled with gui support
+  call assert_equal(1 + has("gui"), len(a))
+  call assert_match('\~/\.config/vim/vimrc', a[0])
+  if has("gui")
+    call assert_match('\~/\.config/vim/gvimrc', a[1])
+  endif
+
+  let $XDG_CONFIG_HOME = expand('~/.xdg')
+  let a = execute(':version')->split('\n')
+  let a = filter(a, { _, val -> val =~ '\.config\|XDG_CONFIG_HOME' })
+  call assert_equal(1 + has("gui"), len(a))
+  call assert_match('XDG_CONFIG_HOME/vim/vimrc', a[0])
+  if has("gui")
+    call assert_match('XDG_CONFIG_HOME/vim/gvimrc', a[1])
+  endif
+  unlet $XDG_CONFIG_HOME
+endfunc
+
+" Test for gvimrc, must be last, since it starts the GUI
+" and sources a few extra test files
+func Test_zzz_xdg_runtime_files()
+  CheckCanRunGui
+  CheckUnix
+
+  " Is setup in Github Runner
+  unlet $XDG_CONFIG_HOME
+  source setup_gui.vim
+  call GUISetUpCommon()
+
+  " This tests, that the GUI initialization file from
+  " ~/.gvimrc, ~/.vim/gvimrc, ~/.config/vim/gvimrc
+  " and ~/XDG_CONFIG_HOME/vim/gvimrc is sourced
+  " when starting GUI mode
+  call mkdir(expand('~/.vim/'), 'pD')
+  call mkdir(expand('~/.config/vim/'), 'pD')
+  call mkdir(expand('~/xdg/vim/'), 'pD')
+
+  let rc1=expand('~/.gvimrc')
+  let rc2=expand('~/.vim/gvimrc')
+  let rc3=expand('~/.config/vim/gvimrc')
+  let rc4=expand('~/xdg/vim/gvimrc')
+
+  " g:rc_one|two|three|four is to verify, that the other
+  " init files are not sourced
+  " g:rc is to verify which rc file has been loaded.
+  let file1 =<< trim CODE
+    let g:rc_one = 'one'
+    let g:rc = '.gvimrc'
+  CODE
+  let file2 =<< trim CODE
+    let g:rc_two = 'two'
+    let g:rc = '.vim/gvimrc'
+  CODE
+  let file3 =<< trim CODE
+    let g:rc_three = 'three'
+    let g:rc = '.config/vim/gvimrc'
+  CODE
+  let file4 =<< trim CODE
+    let g:rc_four = 'four'
+    let g:rc = 'xdg/vim/gvimrc'
+  CODE
+  call writefile(file1, rc1)
+  call writefile(file2, rc2)
+  call writefile(file3, rc3)
+  call writefile(file4, rc4)
+
+  " Get the Vim command to run without the '-u NONE' argument
+  let vimcmd = substitute(GetVimCommand(), '-u NONE', '', '')
+
+  " Test for ~/.gvimrc
+  let lines =<< trim END
+    " Ignore the "failed to create input context" error.
+    call test_ignore_error('E285')
+    gui -f
+    call assert_match('Xhome/\.gvimrc', $MYGVIMRC)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_one: 'one', rc: '.gvimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc1)
+
+  " Test for ~/.vim/gvimrc
+  let lines =<< trim END
+    " Ignore the "failed to create input context" error.
+    call test_ignore_error('E285')
+    gui -f
+    call assert_match('Xhome/\.vim/gvimrc', $MYGVIMRC)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_two: 'two', rc: '.vim/gvimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc2)
+
+  " Test for ~/.config/vim/gvimrc
+  let lines =<< trim END
+    " Ignore the "failed to create input context" error.
+    call test_ignore_error('E285')
+    gui -f
+    let msg = $'HOME="{$HOME}", ~="{expand("~")}"'
+    call assert_match('Xhome/\.config/vim/gvimrc', $MYGVIMRC, msg)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_three: 'three', rc: '.config/vim/gvimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc3)
+
+  " Test for ~/xdg/vim/gvimrc
+  let $XDG_CONFIG_HOME=expand('~/xdg/')
+  let lines =<< trim END
+    " Ignore the "failed to create input context" error.
+    call test_ignore_error('E285')
+    gui -f
+    let msg = $'HOME="{$HOME}", XDG_CONFIG_HOME="{$XDG_CONFIG_HOME}"'
+    call assert_match('Xhome/xdg/vim/gvimrc', $MYGVIMRC, msg)
+    call filter(g:, {idx, _ -> idx =~ '^rc'})
+    call assert_equal(#{rc_four: 'four', rc: 'xdg/vim/gvimrc'}, g:)
+    call writefile(v:errors, 'Xresult')
+    quit
+  END
+  call writefile(lines, 'Xscript', 'D')
+  call system($'{vimcmd} -S Xscript')
+  call assert_equal([], readfile('Xresult'))
+
+  call delete(rc4)
+
+  " Clean up
+  unlet $XDG_CONFIG_HOME
+  call GUITearDownCommon()
+  call delete('Xhome', 'rf')
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/vim9.vim b/src/testdir/vim9.vim
index 782809b..ff4db7b 100644
--- a/src/testdir/vim9.vim
+++ b/src/testdir/vim9.vim
@@ -110,40 +110,6 @@ export def CheckScriptSuccess(lines: list<string>)
   endtry
 enddef
 
-# :source a list of "lines" and check whether it fails with "error"
-export def CheckSourceFailure(lines: list<string>, error: string, lnum = -3)
-  new
-  setline(1, lines)
-  try
-    assert_fails('source', error, lines, lnum)
-  finally
-    bw!
-  endtry
-enddef
-
-# :source a list of "lines" and check whether it fails with the list of
-# "errors"
-export def CheckSourceFailureList(lines: list<string>, errors: list<string>, lnum = -3)
-  new
-  setline(1, lines)
-  try
-    assert_fails('source', errors, lines, lnum)
-  finally
-    bw!
-  endtry
-enddef
-
-# :source a list of "lines" and check whether it succeeds
-export def CheckSourceSuccess(lines: list<string>)
-  new
-  setline(1, lines)
-  try
-    :source
-  finally
-    bw!
-  endtry
-enddef
-
 export def CheckDefAndScriptSuccess(lines: list<string>)
   CheckDefSuccess(lines)
   CheckScriptSuccess(['vim9script'] + lines)
@@ -307,3 +273,177 @@ export def CheckLegacyAndVim9Failure(lines: list<string>, error: any)
   CheckDefExecFailure(vim9lines, defError)
   CheckScriptFailure(['vim9script'] + vim9lines, scriptError)
 enddef
+
+# :source a list of "lines" and check whether it fails with "error"
+export def CheckSourceScriptFailure(lines: list<string>, error: string, lnum = -3)
+  var cwd = getcwd()
+  new
+  setline(1, lines)
+  var bnr = bufnr()
+  try
+    assert_fails('source', error, lines, lnum)
+  finally
+    chdir(cwd)
+    exe $':bw! {bnr}'
+  endtry
+enddef
+
+# :source a list of "lines" and check whether it fails with the list of
+# "errors"
+export def CheckSourceScriptFailureList(lines: list<string>, errors: list<string>, lnum = -3)
+  var cwd = getcwd()
+  new
+  var bnr = bufnr()
+  setline(1, lines)
+  try
+    assert_fails('source', errors, lines, lnum)
+  finally
+    chdir(cwd)
+    exe $':bw! {bnr}'
+  endtry
+enddef
+
+# :source a list of "lines" and check whether it succeeds
+export def CheckSourceScriptSuccess(lines: list<string>)
+  var cwd = getcwd()
+  new
+  var bnr = bufnr()
+  setline(1, lines)
+  try
+    :source
+  finally
+    chdir(cwd)
+    exe $':bw! {bnr}'
+  endtry
+enddef
+
+export def CheckSourceSuccess(lines: list<string>)
+  CheckSourceScriptSuccess(lines)
+enddef
+
+export def CheckSourceFailure(lines: list<string>, error: string, lnum = -3)
+  CheckSourceScriptFailure(lines, error, lnum)
+enddef
+
+export def CheckSourceFailureList(lines: list<string>, errors: list<string>, lnum = -3)
+  CheckSourceScriptFailureList(lines, errors, lnum)
+enddef
+
+# :source a List of "lines" inside a ":def" function and check that no error
+# occurs when called.
+export func CheckSourceDefSuccess(lines)
+  let cwd = getcwd()
+  new
+  let bnr = bufnr()
+  call setline(1, ['def Func()'] + a:lines + ['enddef', 'defcompile'])
+  try
+    source
+    call Func()
+  finally
+    call chdir(cwd)
+    delfunc! Func
+    exe $'bw! {bnr}'
+  endtry
+endfunc
+
+export def CheckSourceDefAndScriptSuccess(lines: list<string>)
+  CheckSourceDefSuccess(lines)
+  CheckSourceScriptSuccess(['vim9script'] + lines)
+enddef
+
+# Check that "lines" inside a ":def" function has no error when compiled.
+export func CheckSourceDefCompileSuccess(lines)
+  let cwd = getcwd()
+  new
+  let bnr = bufnr()
+  call setline(1, ['def Func()', '# comment'] + a:lines + ['#comment', 'enddef', 'defcompile'])
+  try
+    source
+  finally
+    call chdir(cwd)
+    delfunc! Func
+    exe $':bw! {bnr}'
+  endtry
+endfunc
+
+# Check that "lines" inside ":def" results in an "error" message.
+# If "lnum" is given check that the error is reported for this line.
+# Add a line before and after to make it less likely that the line number is
+# accidentally correct.
+export func CheckSourceDefFailure(lines, error, lnum = -3)
+  let cwd = getcwd()
+  new
+  let bnr = bufnr()
+  call setline(1, ['def Func()', '# comment'] + a:lines + ['#comment', 'enddef', 'defcompile'])
+  try
+    call assert_fails('source', a:error, a:lines, a:lnum + 1)
+  finally
+    call chdir(cwd)
+    delfunc! Func
+    exe $':bw! {bnr}'
+  endtry
+endfunc
+
+# Check that "lines" inside ":def" results in an "error" message when executed.
+# If "lnum" is given check that the error is reported for this line.
+# Add a line before and after to make it less likely that the line number is
+# accidentally correct.
+export func CheckSourceDefExecFailure(lines, error, lnum = -3)
+  let cwd = getcwd()
+  new
+  let bnr = bufnr()
+  call setline(1, ['def Func()', '# comment'] + a:lines + ['#comment', 'enddef'])
+  try
+    source
+    call assert_fails('call Func()', a:error, a:lines, a:lnum + 1)
+  finally
+    call chdir(cwd)
+    delfunc! Func
+    exe $':bw! {bnr}'
+  endtry
+endfunc
+
+# Check that a command fails when used in a :def function and when used in
+# Vim9 script.
+# When "error" is a string, both with the same error.
+# When "error" is a list, the :def function fails with "error[0]" , the script
+# fails with "error[1]".
+export def CheckSourceDefAndScriptFailure(lines: list<string>, error: any, lnum = -3)
+  var errorDef: string
+  var errorScript: string
+  if type(error) == v:t_string
+    errorDef = error
+    errorScript = error
+  elseif type(error) == v:t_list && len(error) == 2
+    errorDef = error[0]
+    errorScript = error[1]
+  else
+    echoerr 'error argument must be a string or a list with two items'
+    return
+  endif
+  CheckSourceDefFailure(lines, errorDef, lnum)
+  CheckSourceScriptFailure(['vim9script'] + lines, errorScript, lnum + 1)
+enddef
+
+# Check that a command fails when executed in a :def function and when used in
+# Vim9 script.
+# When "error" is a string, both with the same error.
+# When "error" is a list, the :def function fails with "error[0]" , the script
+# fails with "error[1]".
+export def CheckSourceDefExecAndScriptFailure(lines: list<string>, error: any, lnum = -3)
+  var errorDef: string
+  var errorScript: string
+  if type(error) == v:t_string
+    errorDef = error
+    errorScript = error
+  elseif type(error) == v:t_list && len(error) == 2
+    errorDef = error[0]
+    errorScript = error[1]
+  else
+    echoerr 'error argument must be a string or a list with two items'
+    return
+  endif
+  CheckSourceDefExecFailure(lines, errorDef, lnum)
+  CheckSourceScriptFailure(['vim9script'] + lines, errorScript, lnum + 1)
+enddef
+