filter alt+tab by monitor, need Alternatetab addon

filter_monitor.js

// https://www.reddit.com/r/gnome/comments/507bqd/only_feature_im_missing_alttab_filterd_by_monitor/
// open lg and copypaste this

imports.ui.altTab.WindowSwitcherPopup.prototype._getWindowList = function() {
  let workspace = this._settings.get_boolean('current-workspace-only') ? global.screen.get_active_workspace() : null;
  let allWindows = global.display.get_tab_list(Meta.TabList.NORMAL, workspace);
  allWindows = allWindows.filter(w => w.get_monitor() === global.screen.get_current_monitor());
  return allWindows;
}