[bug 681] Plugin Submission + Generic Plugin Utility Functions & KeyBinding Feature: Mouseless / Mousefree / Keyboard URL opening or yanking #681

- there was a bug wherein the duplicate keybindings from plugins were not throwing the error "Duplicate Key Bindings Are Not Allowed", now while checking they are merged and then final list of keybindings are checked.

terminatorlib/prefseditor.py

@@ -1814,8 +1814,14 @@ class PrefsEditor:
         current_binding = liststore.get_value(liststore.get_iter(path), 0)
         parsed_accel = Gtk.accelerator_parse(accel)
 
+        keybindutil          = KeyBindUtil()
+        keybindings          = self.config["keybindings"]
+        #merge give preference to main bindings over plugin
+        plugin_keyb_act      = keybindutil.get_act_to_keys()
+        keybindings          = {**plugin_keyb_act,  **keybindings}
+
         duplicate_bindings = []
-        for conf_binding, conf_accel in self.config["keybindings"].items():
+        for conf_binding, conf_accel in keybindings.items():
             if conf_accel is None:
                 continue
 
@@ -1859,7 +1865,6 @@ class PrefsEditor:
         accel = Gtk.accelerator_name(key, mods)
         self.config['keybindings'][binding] = accel
 
-        keybindutil          = KeyBindUtil()
         plugin_keyb_desc     = keybindutil.get_act_to_desc()
 
         if binding in plugin_keyb_desc: