patch 8.0.0476: missing change to main.c

Problem:    Missing change to main.c.
Solution:   Add new function.

src/main.c

@@ -4140,6 +4140,11 @@ eval_client_expr_to_string(char_u *expr)
     char_u	*res;
     int		save_dbl = debug_break_level;
     int		save_ro = redir_off;
+    void	*fc;
+
+    /* Evaluate the expression at the toplevel, don't use variables local to
+     * the calling function. */
+    fc = clear_current_funccal();
 
      /* Disable debugging, otherwise Vim hangs, waiting for "cont" to be
       * typed. */
@@ -4156,6 +4161,7 @@ eval_client_expr_to_string(char_u *expr)
     --emsg_silent;
     if (emsg_silent < 0)
 	emsg_silent = 0;
+    restore_current_funccal(fc);
 
     /* A client can tell us to redraw, but not to display the cursor, so do
      * that here. */
@@ -4169,6 +4175,41 @@ eval_client_expr_to_string(char_u *expr)
     return res;
 }
 
+/*
+ * Evaluate a command or expression sent to ourselves.
+ */
+    int
+sendToLocalVim(char_u *cmd, int asExpr, char_u **result)
+{
+    if (asExpr)
+    {
+	char_u *ret;
+
+	ret = eval_client_expr_to_string(cmd);
+	if (result != NULL)
+	{
+	    if (ret == NULL)
+	    {
+		char	*err = _(e_invexprmsg);
+		size_t	len = STRLEN(cmd) + STRLEN(err) + 5;
+		char_u	*msg;
+
+		msg = alloc(len);
+		if (msg != NULL)
+		    vim_snprintf((char *)msg, len, "%s: \"%s\"", err, cmd);
+		*result = msg;
+	    }
+	    else
+		*result = ret;
+	}
+	else
+	    vim_free(ret);
+	return ret == NULL ? -1 : 0;
+    }
+    server_to_input_buf(cmd);
+    return 0;
+}
+
 /*
  * If conversion is needed, convert "data" from "client_enc" to 'encoding' and
  * return an allocated string.  Otherwise return "data".