patch 8.2.0298: Vim9 script: cannot start command with a string constant

Problem:    Vim9 script: cannot start command with a string constant.
Solution:   Recognize expression starting with '('.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 511e8c5..70c0da2 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -3146,8 +3146,9 @@
      * Recognize a Vim9 script function/method call and assignment:
      * "lvar = value", "lvar(arg)", "[1, 2 3]->Func()"
      */
-    if (lookup != NULL && (p = to_name_const_end(eap->cmd)) > eap->cmd
-								  && *p != NUL)
+    p = eap->cmd;
+    if (lookup != NULL && (*p == '('
+	       || ((p = to_name_const_end(eap->cmd)) > eap->cmd && *p != NUL)))
     {
 	int oplen;
 	int heredoc;
@@ -3156,6 +3157,7 @@
 	// "varname[]" is an expression.
 	// "g:varname" is an expression.
 	// "varname->expr" is an expression.
+	// "(..." is an expression.
 	if (*p == '('
 		|| *p == '['
 		|| p[1] == ':'
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 107ee02..5dbc9f9 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -370,6 +370,11 @@
     assert_equal(#{a: 1, b: 2}, dictvar)
     #{a: 3, b: 4}->DictFunc()
     assert_equal(#{a: 3, b: 4}, dictvar)
+
+    ('text')->MyFunc()
+    assert_equal('text', var)
+    ("some")->MyFunc()
+    assert_equal('some', var)
   END
   writefile(lines, 'Xcall.vim')
   source Xcall.vim
diff --git a/src/version.c b/src/version.c
index aa9ff36..d889ce7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    298,
+/**/
     297,
 /**/
     296,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index aeb950c..6408b67 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -4821,22 +4821,11 @@
 	    p = (*ea.cmd == '&' || *ea.cmd == '$' || *ea.cmd == '@')
 							 ? ea.cmd + 1 : ea.cmd;
 	    p = to_name_end(p);
-	    if (p > ea.cmd && *p != NUL)
+	    if ((p > ea.cmd && *p != NUL) || *p == '(')
 	    {
 		int oplen;
 		int heredoc;
 
-		// "funcname(" is always a function call.
-		// "varname[]" is an expression.
-		// "varname->expr" is an expression.
-		if (*p == '('
-			|| *p == '['
-			|| ((p - ea.cmd) > 2 && ea.cmd[1] == ':')
-			|| (*p == '-' && p[1] == '>'))
-		{
-		    // TODO
-		}
-
 		oplen = assignment_len(skipwhite(p), &heredoc);
 		if (oplen > 0)
 		{