patch 8.2.0467: Vim9: some errors are not tested

Problem:    Vim9: some errors are not tested
Solution:   Add more tests.  Fix that Vim9 script flag is not reset.

src/dict.c

@@ -826,6 +826,7 @@ eval_dict(char_u **arg, typval_T *rettv, int evaluate, int literal)
 
 	if (**arg != ':')
 	{
+	    if (evaluate)
 		semsg(_(e_missing_dict_colon), *arg);
 	    clear_tv(&tvkey);
 	    goto failret;
@@ -853,6 +854,7 @@ eval_dict(char_u **arg, typval_T *rettv, int evaluate, int literal)
 	    item = dict_find(d, key, -1);
 	    if (item != NULL)
 	    {
+		if (evaluate)
 		    semsg(_(e_duplicate_key), key);
 		clear_tv(&tvkey);
 		clear_tv(&tv);
@@ -873,6 +875,7 @@ eval_dict(char_u **arg, typval_T *rettv, int evaluate, int literal)
 	    break;
 	if (**arg != ',')
 	{
+	    if (evaluate)
 		semsg(_(e_missing_dict_comma), *arg);
 	    goto failret;
 	}
@@ -881,6 +884,7 @@ eval_dict(char_u **arg, typval_T *rettv, int evaluate, int literal)
 
     if (**arg != '}')
     {
+	if (evaluate)
 	    semsg(_(e_missing_dict_end), *arg);
 failret:
 	if (d != NULL)

src/scriptfile.c

@@ -1274,6 +1274,7 @@ do_source(
 
 	// loading the same script again
 	si->sn_had_command = FALSE;
+	si->sn_version = 1;
 	current_sctx.sc_sid = sid;
 
 	ht = &SCRIPT_VARS(sid);

src/testdir/test_vim9_expr.vim

@@ -812,12 +812,25 @@ func Test_expr7_fails()
   call CheckDefExecFailure("echo s:doesnt_exist", 'E121:')
   call CheckDefExecFailure("echo g:doesnt_exist", 'E121:')
 
+  call CheckDefFailure("echo a:somevar", 'E1075:')
+  call CheckDefFailure("echo l:somevar", 'E1075:')
+  call CheckDefFailure("echo x:somevar", 'E1075:')
+
+  " TODO
+  call CheckDefFailure("echo b:somevar", 'not supported yet')
+  call CheckDefFailure("echo w:somevar", 'not supported yet')
+  call CheckDefFailure("echo t:somevar", 'not supported yet')
+
   call CheckDefExecFailure("let x = +g:astring", 'E1030:')
   call CheckDefExecFailure("let x = +g:ablob", 'E974:')
   call CheckDefExecFailure("let x = +g:alist", 'E745:')
   call CheckDefExecFailure("let x = +g:adict", 'E728:')
 
   call CheckDefFailureMult(["let x = ''", "let y = x.memb"], 'E715:')
+
+  call CheckDefExecFailure("[1, 2->len()", 'E492:')
+  call CheckDefExecFailure("#{a: 1->len()", 'E488:')
+  call CheckDefExecFailure("{'a': 1->len()", 'E492:')
 endfunc
 
 let g:Funcrefs = [function('add')]
@@ -878,4 +891,8 @@ func Test_expr_fails()
   call CheckDefFailure("v:nosuch += 3", 'E1001:')
   call CheckDefFailure("let v:version = 3", 'E1064:')
   call CheckDefFailure("let asdf = v:nosuch", 'E1001:')
+
+  call CheckDefFailure("echo len('asdf'", 'E110:')
+  call CheckDefFailure("echo Func0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789()", 'E1011:')
+  call CheckDefFailure("echo doesnotexist()", 'E117:')
 endfunc

src/testdir/test_vim9_script.vim

@@ -101,6 +101,8 @@ func Test_assignment_failure()
   call CheckDefFailure(['let true = 1'], 'E1034:')
   call CheckDefFailure(['let false = 1'], 'E1034:')
 
+  call CheckScriptFailure(['vim9script', 'def Func()', 'let dummy = s:notfound', 'enddef'], 'E1050:')
+
   call CheckDefFailure(['let var: list<string> = [123]'], 'expected list<string> but got list<number>')
   call CheckDefFailure(['let var: list<number> = ["xx"]'], 'expected list<number> but got list<string>')
 
@@ -618,6 +620,12 @@ def Test_vim9script_call()
     enddef
     {'a': 1, 'b': 2}->DictFunc()
     assert_equal(#{a: 1, b: 2}, dictvar)
+    def CompiledDict()
+      {'a': 3, 'b': 4}->DictFunc()
+    enddef
+    CompiledDict()
+    assert_equal(#{a: 3, b: 4}, dictvar)
+
     #{a: 3, b: 4}->DictFunc()
     assert_equal(#{a: 3, b: 4}, dictvar)
 

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    467,
 /**/
     466,
 /**/

src/vim9compile.c

@@ -1815,6 +1815,9 @@ compile_load(char_u **arg, char_u *end_arg, cctx_T *cctx, int error)
     if (*(*arg + 1) == ':')
     {
 	// load namespaced variable
+	if (end <= *arg + 2)
+	    name = vim_strsave((char_u *)"[empty]");
+	else
 	    name = vim_strnsave(*arg + 2, end - (*arg + 2));
 	if (name == NULL)
 	    return FAIL;
@@ -1833,9 +1836,24 @@ compile_load(char_u **arg, char_u *end_arg, cctx_T *cctx, int error)
 	{
 	    res = compile_load_scriptvar(cctx, name, NULL, NULL, error);
 	}
+	else if (**arg == 'b')
+	{
+	    semsg("Namespace b: not supported yet: %s", *arg);
+	    goto theend;
+	}
+	else if (**arg == 'w')
+	{
+	    semsg("Namespace w: not supported yet: %s", *arg);
+	    goto theend;
+	}
+	else if (**arg == 't')
+	{
+	    semsg("Namespace t: not supported yet: %s", *arg);
+	    goto theend;
+	}
 	else
 	{
-	    semsg("Namespace not supported yet: %s", *arg);
+	    semsg("E1075: Namespace not supported: %s", *arg);
 	    goto theend;
 	}
     }
@@ -2060,6 +2078,7 @@ to_name_const_end(char_u *arg)
     }
     else if (p == arg && *arg == '#' && arg[1] == '{')
     {
+	// Can be "#{a: 1}->Func()".
 	++p;
 	if (eval_dict(&p, &rettv, FALSE, TRUE) == FAIL)
 	    p = arg;
@@ -2068,6 +2087,8 @@ to_name_const_end(char_u *arg)
     {
 	int	    ret = get_lambda_tv(&p, &rettv, FALSE);
 
+	// Can be "{x -> ret}()".
+	// Can be "{'a': 1}->Func()".
 	if (ret == NOTDONE)
 	    ret = eval_dict(&p, &rettv, FALSE, FALSE);
 	if (ret != OK)
@@ -5123,7 +5144,8 @@ compile_def_function(ufunc_T *ufunc, int set_return_type)
 	}
 
 	// "{" starts a block scope
-	if (*ea.cmd == '{')
+	// "{'a': 1}->func() is something else
+	if (*ea.cmd == '{' && ends_excmd(*skipwhite(ea.cmd + 1)))
 	{
 	    line = compile_block(ea.cmd, &cctx);
 	    continue;