Revert "Remove TerminalWidget.init_complete (#978)"

This reverts commit ab7ab67.

Author: lenemter

src/Application.vala

@@ -169,6 +169,9 @@ public class Terminal.Application : Gtk.Application {
 
             if (terminal == null) {
                 return;
+            } else if (!terminal.is_init_complete ()) {
+                terminal.set_init_complete ();
+                return;
             }
 
             var notification_title = _("Process completed");

src/Widgets/TerminalWidget.vala

@@ -28,6 +28,7 @@ namespace Terminal {
         public string current_working_directory { get; private set; default = "";}
         public string program_string { get; set; default = ""; }
         static int terminal_id_counter = 0;
+        private bool init_complete;
         public bool resized {get; set;}
         public TabState tab_state { get; set; default = NONE; }
 
@@ -130,6 +131,7 @@ namespace Terminal {
         construct {
             pointer_autohide = true;
             terminal_id = "%i".printf (terminal_id_counter++);
+            init_complete = false;
 
             update_audible_bell ();
             update_cursor_shape ();
@@ -1009,6 +1011,14 @@ namespace Terminal {
             font_scale = 1.0;
         }
 
+        public bool is_init_complete () {
+            return init_complete;
+        }
+
+        public void set_init_complete () {
+            init_complete = true;
+        }
+
         private bool on_drop (Value val, double x, double y) {
             var uris = Uri.list_extract_uris (val.dup_string ());
             string path;