fixed "Press ENTER or type command to continue" to be suppressed

If in headless mode, we need to exit at this point. If we continue, we will enter the normal mode and the message "Press ENTER or type command to continue" will be displayed and we will be in the input waiting state.

Author: Code-Hex

src/nvim/main.c

@@ -513,6 +513,14 @@ int main(int argc, char **argv)
   // Execute any "+", "-c" and "-S" arguments.
   if (params.n_commands > 0) {
     exe_commands(&params);
+    // If in headless mode, we need to exit at this point.
+    // If we continue, we will enter the normal mode and the
+    // message "Press ENTER or type command to continue" will be
+    // displayed and we will be in the input waiting state.
+    if (headless_mode) {
+      msg_putchar('\n');
+      return 0;
+    }
   }
 
   starting = 0;