tachiyomi/app/src/main/res/menu/library.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      tools:context=".MainActivity">

    <item
        android:id="@+id/action_search"
        android:icon="@drawable/ic_search_white_24dp"
        android:title="@string/action_search"
        app:actionViewClass="androidx.appcompat.widget.SearchView"
        app:showAsAction="collapseActionView|ifRoom"/>

    <item
        android:id="@+id/action_filter"
        android:icon="@drawable/ic_filter_list_white_24dp"
        android:title="@string/action_filter"
        app:showAsAction="ifRoom"/>

    <item
        android:id="@+id/action_update_library"
        android:icon="@drawable/ic_refresh_white_24dp"
        android:title="@string/action_update_library"
        app:showAsAction="ifRoom"/>

    <item
        android:id="@+id/action_edit_categories"
        android:title="@string/action_edit_categories"
        app:showAsAction="never"/>

    <item
        android:id="@+id/action_source_migration"
        android:title="@string/label_migration"
        app:showAsAction="never"/>

    <item
        android:id="@+id/action_reorganize"
        android:title="@string/label_reorganize_by"
        app:showAsAction="never">
        <menu>
            <item
                android:id="@+id/action_alpha_asc"
                android:title="@string/action_sort_alpha"/>
            <item
                android:id="@+id/action_alpha_dsc"
                android:title="@string/label_alpha_reverse"/>
            <item
                android:id="@+id/action_update_asc"
                android:title="@string/action_sort_last_updated"/>
            <item
                android:id="@+id/action_update_dsc"
                android:title="@string/action_sort_first_updated"/>
        </menu>
    </item>

</menu>