def __invoke(self, librarian, event, *args):
        args = list(args)
        if args and args[0]:
            if isinstance(args[0], dict):
                args[0] = SongWrapper(args[0])
            elif isinstance(args[0], (set, list)):
                args[0] = ListWrapper(args[0])
        for plugin in list(self.__plugins.values()):
            method_name = 'plugin_on_' + event.replace('-', '_')
            handler = getattr(plugin, method_name, None)

            def overridden(obj, name):
                return name in type(obj).__dict__

            if overridden(plugin, method_name):
                try:
                    handler(*args)
                except Exception:
                    print_e("Error during %s on %s" %
                            (method_name, type(plugin)))
                    errorhook()

        if event not in ["removed", "changed"] and args:
            from quodlibet import app
            songs = args[0]
            if not isinstance(songs, (set, list)):
                songs = [songs]
            songs = filter(None, songs)
            check_wrapper_changed(librarian, app.window, songs)

def errorhook(exc_info=None):
    """This is the main entry point

    Call in an exception context. Thread safe.

    def my_thread():
        try:
            do_work()
        except Exception:
            errorhook()
    """

    global _error_lock, _errorhook_enabled

    if not _errorhook_enabled:
        return

    if exc_info is None:
        exc_info = sys.exc_info()

    if exc_info[0] is None:
        # called outside of an exception context, just ignore
        print_e("no active exception!")
        return

    # In case something goes wrong during error handling print it first
    print_exc(exc_info)

    if not _error_lock.acquire(False):
        # Make sure only one of these is active at a time
        return

    # write error and logs to disk
    dump_dir = os.path.join(quodlibet.get_user_dir(), "dumps")
    dump_to_disk(dump_dir, exc_info)

    sentry = get_sentry()

    # For crashes the stack trace is not enough to differentiating different
    # crash sources. We need to give our own grouping key (fingerprint) based
    # on the stack trace provided by faulthandler.
    fingerprint = None
    if isinstance(exc_info[1], FaultHandlerCrash):
        fingerprint = ["{{ default }}", exc_info[1].get_grouping_key()]

    try:
        sentry_error = sentry.capture(exc_info, fingerprint=fingerprint)
    except SentryError:
        sentry_error = None

    def called_in_main_thread():
        try:
            run_error_dialogs(exc_info, sentry_error)
        finally:
            _error_lock.release()

    if is_main_thread():
        called_in_main_thread()
    else:
        GLib.idle_add(called_in_main_thread)

def _init_gst():
    """Call once before importing GStreamer"""

    assert "gi.repository.Gst" not in sys.modules

    import gi

    # We don't want python-gst, it changes API..
    assert "gi.overrides.Gst" not in sys.modules
    sys.modules["gi.overrides.Gst"] = None

    # blacklist some modules, simply loading can cause segfaults
    sys.modules["gst"] = None

    # We don't depend on Gst overrides, so make sure it's initialized.
    try:
        gi.require_version("Gst", "1.0")
        from gi.repository import Gst
    except (ValueError, ImportError):
        return

    if Gst.is_initialized():
        return

    from gi.repository import GLib

    try:
        ok, argv[:] = Gst.init_check(argv)
    except GLib.GError:
        print_e("Failed to initialize GStreamer")
        # Uninited Gst segfaults: make sure no one can use it
        sys.modules["gi.repository.Gst"] = None
    else:
        # monkey patching ahead
        _fix_gst_leaks()

def validator(pat):
    """Validates Patterns a bit.
    TODO: Extract to somewhere good - see #1983"""
    try:
        str = Pattern(pat).format(DUMMY_AF)
        return bool(str)
    except Exception as e:
        print_e("Problem with %s" % (pat,), e)

    def __set_mode(self, player, mode):
        selected_mode = next((m for m in self.__modes if m[0] == mode), None)
        if selected_mode is None:
            print_e("Invalid selected replaygain mode: %r" % mode)
            selected_mode = self.__modes[0]
            print_e("Falling back to replaygain mode: %r" % selected_mode[0])

        player.replaygain_profiles[0] = selected_mode[2]
        player.reset_replaygain()

 def plugin_songs(self, songs):
     # Check this is a launch, not a configure
     if self.com_index:
         com = self.get_data(self.com_index)
         print_d("Running %s" % com)
         try:
             com.run(songs)
         except Exception, err:
             print_e("Couldn't run command %s: %s %s at"
                     % (com.name, type(err), err))
             ErrorMessage(
                 self.plugin_window,
                 _("Unable to run custom command %s" %
                   util.escape(self.com_index)),
                 util.escape(str(err))).run()

    def parse(self, args=None):
        if args is None:
            args = argv[1:]
        from getopt import getopt, GetoptError
        try:
            opts, args = getopt(args, self.__shorts(), self.__longs())
        except GetoptError as s:
            s = str(s)
            text = []
            if "not recognized" in s:
                text.append(
                    _("Option %r not recognized.") % s.split()[1])
            elif "requires argument" in s:
                text.append(
                    _("Option %r requires an argument.") % s.split()[1])
            elif "unique prefix" in s:
                text.append(
                    _("%r is not a unique prefix.") % s.split()[1])
            if "help" in self.__args:
                text.append(_("Try %s --help.") % argv[0])

            print_e("\n".join(text))
            raise SystemExit(True)
        else:
            transopts = {}
            for o, a in opts:
                if o.startswith("--"):
                    o = self.__translate_long.get(o[2:], o[2:])
                elif o.startswith("-"):
                    o = self.__translate_short.get(o[1:], o[1:])
                if o == "help":
                    print_(self.help())
                    raise SystemExit
                elif o == "version":
                    print_(self.version())
                    raise SystemExit
                elif o == "debug":
                    from quodlibet import const
                    const.DEBUG = True
                if self.__args[o]:
                    transopts[o] = a
                else:
                    transopts[o] = True

            return transopts, args

def _gst_init():
    """Call once before importing GStreamer"""

    assert "gi.repository.Gst" not in sys.modules

    import gi

    # We don't want python-gst, it changes API..
    assert "gi.overrides.Gst" not in sys.modules
    sys.modules["gi.overrides.Gst"] = None

    # blacklist some modules, simply loading can cause segfaults
    sys.modules["gst"] = None

    # We don't depend on Gst overrides, so make sure it's initialized.
    try:
        gi.require_version("Gst", "1.0")
        from gi.repository import Gst
    except (ValueError, ImportError):
        return

    if Gst.is_initialized():
        return

    from gi.repository import GLib

    try:
        ok, argv = Gst.init_check(sys.argv)
    except GLib.GError:
        print_e("Failed to initialize GStreamer")
        # Uninited Gst segfaults: make sure no one can use it
        sys.modules["gi.repository.Gst"] = None
    else:
        sys.argv = argv

        # monkey patching ahead
        _fix_gst_leaks()

        # https://bugzilla.gnome.org/show_bug.cgi?id=710447
        import threading
        threading.Thread(target=lambda: None).start()

 def _handle_songs(self, songs, playlist=None):
     # Check this is a launch, not a configure
     if self.com_index:
         com = self.get_data(self.com_index)
         if len(songs) > com.warn_threshold:
             if not confirm_multi_song_invoke(
                     self, com.name, len(songs)):
                 print_d("User decided not to run on %d songs" % len(songs))
                 return
         print_d("Running %s on %d song(s)" % (com, len(songs)))
         try:
             com.run(songs, playlist and playlist.name)
         except Exception as err:
             print_e("Couldn't run command %s: %s %s at:"
                     % (com.name, type(err), err, ))
             print_exc()
             ErrorMessage(
                 self.plugin_window,
                 _("Unable to run custom command %s") %
                 util.escape(self.com_index),
                 util.escape(str(err))).run()

    def populate_menu(self, menu, library, browser, playlists):
        """Appends items onto `menu` for each enabled playlist plugin,
        separated as necessary. """

        attrs = ['plugin_playlist', 'plugin_playlists']

        if len(playlists) == 1:
            attrs.append('plugin_single_playlist')

        items = []
        kinds = self.__plugins
        kinds.sort(key=lambda plugin: plugin.PLUGIN_ID)
        print_d("Found %d Playlist plugin(s): %s" % (len(kinds), kinds))
        for Kind in kinds:
            usable = any([callable(getattr(Kind, s)) for s in attrs])
            if usable:
                try:
                    items.append(Kind(playlists, library))
                except:
                    print_e("Couldn't initialise playlist plugin %s: " % Kind)
                    print_exc()
        items = [i for i in items if i.initialized]

        if items:
            menu.append(SeparatorMenuItem())
            for item in items:
                try:
                    menu.append(item)
                    args = (library, browser, playlists)
                    if item.get_submenu():
                        for subitem in item.get_submenu().get_children():
                            subitem.connect(
                                'activate', self.__on_activate, item, *args)
                    else:
                        item.connect(
                            'activate', self.__on_activate, item, *args)
                except:
                    print_exc()
                    item.destroy()

def _init_gtk():
    """Call before using Gtk/Gdk"""

    import gi

    # pygiaio 3.14rev16 switched to fontconfig for PangoCairo. As this results
    # in 100% CPU under win7 revert it. Maybe we need to update the
    # cache in the windows installer for it to work... but for now revert.
    if is_windows():
        environ['PANGOCAIRO_BACKEND'] = 'win32'
        environ["GTK_CSD"] = "0"

    # disable for consistency and trigger events seem a bit flaky here
    if config.getboolean("settings", "scrollbar_always_visible"):
        environ["GTK_OVERLAY_SCROLLING"] = "0"

    try:
        # not sure if this is available under Windows
        gi.require_version("GdkX11", "3.0")
        from gi.repository import GdkX11
        GdkX11
    except (ValueError, ImportError):
        pass

    gi.require_version("Gtk", "3.0")
    gi.require_version("Gdk", "3.0")
    gi.require_version("Pango", "1.0")
    gi.require_version('Soup', '2.4')

    from gi.repository import Gtk
    from quodlibet.qltk import ThemeOverrider, gtk_version

    # PyGObject doesn't fail anymore when init fails, so do it ourself
    initialized, argv[:] = Gtk.init_check(argv)
    if not initialized:
        raise SystemExit("Gtk.init failed")

    # include our own icon theme directory
    theme = Gtk.IconTheme.get_default()
    theme_search_path = get_image_dir()
    assert os.path.exists(theme_search_path)
    theme.append_search_path(theme_search_path)

    # Force menu/button image related settings. We might show too many atm
    # but this makes sure we don't miss cases where we forgot to force them
    # per widget.
    # https://bugzilla.gnome.org/show_bug.cgi?id=708676
    warnings.filterwarnings('ignore', '.*g_value_get_int.*', Warning)

    # some day... but not now
    warnings.filterwarnings(
        'ignore', '.*Stock items are deprecated.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*:use-stock.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*The property GtkAlignment:[^\s]+ is deprecated.*',
        Warning)

    settings = Gtk.Settings.get_default()
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        settings.set_property("gtk-button-images", True)
        settings.set_property("gtk-menu-images", True)
    if hasattr(settings.props, "gtk_primary_button_warps_slider"):
        # https://bugzilla.gnome.org/show_bug.cgi?id=737843
        settings.set_property("gtk-primary-button-warps-slider", True)

    # Make sure PyGObject includes support for foreign cairo structs
    try:
        gi.require_foreign("cairo")
    except ImportError:
        print_e("PyGObject is missing cairo support")
        exit(1)

    css_override = ThemeOverrider()

    if sys.platform == "darwin":
        # fix duplicated shadows for popups with Gtk+3.14
        style_provider = Gtk.CssProvider()
        style_provider.load_from_data(b"""
            GtkWindow {
                box-shadow: none;
            }
            .tooltip {
                border-radius: 0;
                padding: 0;
            }
            .tooltip.background {
                background-clip: border-box;
            }
            """)
        css_override.register_provider("", style_provider)

    if gtk_version[:2] >= (3, 20):
        # https://bugzilla.gnome.org/show_bug.cgi?id=761435
        style_provider = Gtk.CssProvider()
        style_provider.load_from_data(b"""
            spinbutton, button {
                min-height: 1.8rem;
            }
#.........这里部分代码省略.........

def _init_gtk():
    """Call before using Gtk/Gdk"""

    import gi

    # pygiaio 3.14rev16 switched to fontconfig for PangoCairo. As this results
    # in 100% CPU under win7 revert it. Maybe we need to update the
    # cache in the windows installer for it to work... but for now revert.
    if is_windows():
        environ['PANGOCAIRO_BACKEND'] = 'win32'
        environ["GTK_CSD"] = "0"

    # disable for consistency and trigger events seem a bit flaky here
    if is_osx():
        environ["GTK_OVERLAY_SCROLLING"] = "0"

    # make sure GdkX11 doesn't get used under Windows
    if os.name == "nt":
        sys.modules["gi.repository.GdkX11"] = None

    try:
        # not sure if this is available under Windows
        gi.require_version("GdkX11", "3.0")
        from gi.repository import GdkX11
        GdkX11
    except (ValueError, ImportError):
        pass

    gi.require_version("Gtk", "3.0")
    gi.require_version("Gdk", "3.0")
    gi.require_version("Pango", "1.0")
    gi.require_version('Soup', '2.4')

    from gi.repository import Gtk, Soup
    from quodlibet.qltk import ThemeOverrider, gtk_version

    # Work around missing annotation in older libsoup (Ubuntu 14.04 at least)
    message = Soup.Message()
    try:
        message.set_request(None, Soup.MemoryUse.COPY, b"")
    except TypeError:
        orig = Soup.Message.set_request

        def new_set_request(self, content_type, req_use, req_body):
            return orig(self, content_type, req_use, req_body, len(req_body))

        Soup.Message.set_request = new_set_request

    # PyGObject doesn't fail anymore when init fails, so do it ourself
    initialized, argv[:] = Gtk.init_check(argv)
    if not initialized:
        raise SystemExit("Gtk.init failed")

    # include our own icon theme directory
    theme = Gtk.IconTheme.get_default()
    theme_search_path = get_image_dir()
    assert os.path.exists(theme_search_path)
    theme.append_search_path(theme_search_path)

    # Force menu/button image related settings. We might show too many atm
    # but this makes sure we don't miss cases where we forgot to force them
    # per widget.
    # https://bugzilla.gnome.org/show_bug.cgi?id=708676
    warnings.filterwarnings('ignore', '.*g_value_get_int.*', Warning)

    # some day... but not now
    warnings.filterwarnings(
        'ignore', '.*Stock items are deprecated.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*:use-stock.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*The property GtkAlignment:[^\s]+ is deprecated.*',
        Warning)

    settings = Gtk.Settings.get_default()
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        settings.set_property("gtk-button-images", True)
        settings.set_property("gtk-menu-images", True)
    if hasattr(settings.props, "gtk_primary_button_warps_slider"):
        # https://bugzilla.gnome.org/show_bug.cgi?id=737843
        settings.set_property("gtk-primary-button-warps-slider", True)

    # Make sure PyGObject includes support for foreign cairo structs
    try:
        gi.require_foreign("cairo")
    except AttributeError:
        # older pygobject
        pass
    except ImportError:
        print_e("PyGObject is missing cairo support")
        exit(1)

    css_override = ThemeOverrider()

    # CSS overrides
    if os.name == "nt":
        # somehow borders are missing under Windows & Gtk+3.14
        style_provider = Gtk.CssProvider()
        style_provider.load_from_data(b"""
#.........这里部分代码省略.........

def _init_gtk():
    """Call before using Gtk/Gdk"""

    import gi

    # pygiaio 3.14rev16 switched to fontconfig for PangoCairo. As this results
    # in 100% CPU under win7 revert it. Maybe we need to update the
    # cache in the windows installer for it to work... but for now revert.
    if is_windows():
        os.environ['PANGOCAIRO_BACKEND'] = 'win32'

    # disable for consistency and trigger events seem a bit flaky here
    if is_osx():
        os.environ["GTK_OVERLAY_SCROLLING"] = "0"

    # make sure GdkX11 doesn't get used under Windows
    if os.name == "nt":
        sys.modules["gi.repository.GdkX11"] = None

    try:
        # not sure if this is available under Windows
        gi.require_version("GdkX11", "3.0")
        from gi.repository import GdkX11
        GdkX11
    except (ValueError, ImportError):
        pass

    gi.require_version("Gtk", "3.0")
    gi.require_version("Gdk", "3.0")
    gi.require_version("Pango", "1.0")
    gi.require_version('Soup', '2.4')

    from gi.repository import Gtk, Gdk

    # PyGObject doesn't fail anymore when init fails, so do it ourself
    initialized, argv = Gtk.init_check(sys.argv)
    if not initialized:
        raise SystemExit("Gtk.init failed")
    sys.argv = list(argv)

    # add Gtk.TreePath.__getitem__/__len__ for PyGObject 3.2
    try:
        Gtk.TreePath()[0]
    except TypeError:
        Gtk.TreePath.__getitem__ = lambda self, index: list(self)[index]
        Gtk.TreePath.__len__ = lambda self: self.get_depth()

    # GTK+ 3.4+ constants
    if not hasattr(Gdk, "BUTTON_PRIMARY"):
        Gdk.BUTTON_PRIMARY = 1
        Gdk.BUTTON_MIDDLE = 2
        Gdk.BUTTON_SECONDARY = 3

    if not hasattr(Gdk, "EVENT_PROPAGATE"):
        Gdk.EVENT_PROPAGATE = 0
        Gdk.EVENT_STOP = 1

    # include our own icon theme directory
    theme = Gtk.IconTheme.get_default()
    theme_search_path = get_image_dir()
    assert os.path.exists(theme_search_path)
    theme.append_search_path(theme_search_path)

    # Force menu/button image related settings. We might show too many atm
    # but this makes sure we don't miss cases where we forgot to force them
    # per widget.
    # https://bugzilla.gnome.org/show_bug.cgi?id=708676
    warnings.filterwarnings('ignore', '.*g_value_get_int.*', Warning)

    # some day... but not now
    warnings.filterwarnings(
        'ignore', '.*Stock items are deprecated.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*:use-stock.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*The property GtkAlignment:[^\s]+ is deprecated.*',
        Warning)

    settings = Gtk.Settings.get_default()
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        settings.set_property("gtk-button-images", True)
        settings.set_property("gtk-menu-images", True)
    if hasattr(settings.props, "gtk_primary_button_warps_slider"):
        # https://bugzilla.gnome.org/show_bug.cgi?id=737843
        settings.set_property("gtk-primary-button-warps-slider", True)

    # Make sure PyGObject includes support for foreign cairo structs
    try:
        gi.require_foreign("cairo")
    except AttributeError:
        # older pygobject
        pass
    except ImportError:
        print_e("PyGObject is missing cairo support")
        exit(1)

    # CSS overrides
    if os.name == "nt":
        # somehow borders are missing under Windows & Gtk+3.14
#.........这里部分代码省略.........

def _gtk_init():
    """Call before using Gtk/Gdk"""

    import gi

    # make sure GdkX11 doesn't get used under Windows
    if os.name == "nt":
        sys.modules["gi.repository.GdkX11"] = None

    try:
        # not sure if this is available under Windows
        gi.require_version("GdkX11", "3.0")
        from gi.repository import GdkX11
        GdkX11
    except (ValueError, ImportError):
        pass

    gi.require_version("GLib", "2.0")
    gi.require_version("Gtk", "3.0")
    gi.require_version("Gdk", "3.0")
    gi.require_version("GObject", "2.0")
    gi.require_version("Pango", "1.0")
    gi.require_version("GdkPixbuf", "2.0")
    gi.require_version("Gio", "2.0")

    from gi.repository import Gtk, GObject, Gdk, GdkPixbuf

    # add Gtk.TreePath.__getitem__/__len__ for PyGObject 3.2
    try:
        Gtk.TreePath()[0]
    except TypeError:
        Gtk.TreePath.__getitem__ = lambda self, index: list(self)[index]
        Gtk.TreePath.__len__ = lambda self: self.get_depth()

    # GTK+ 3.4+ constants
    if not hasattr(Gdk, "BUTTON_PRIMARY"):
        Gdk.BUTTON_PRIMARY = 1
        Gdk.BUTTON_MIDDLE = 2
        Gdk.BUTTON_SECONDARY = 3

    if not hasattr(Gdk, "EVENT_PROPAGATE"):
        Gdk.EVENT_PROPAGATE = 0
        Gdk.EVENT_STOP = 1

    # On windows the default variants only do ANSI paths, so replace them.
    # In some typelibs they are replaced by default, in some don't..
    if os.name == "nt":
        for name in ["new_from_file_at_scale", "new_from_file_at_size",
                     "new_from_file"]:
            cls = GdkPixbuf.Pixbuf
            setattr(cls, name, getattr(cls, name + "_utf8", name))

    # https://bugzilla.gnome.org/show_bug.cgi?id=670372
    if not hasattr(GdkPixbuf.Pixbuf, "savev"):
        GdkPixbuf.Pixbuf.savev = GdkPixbuf.Pixbuf.save

    # Force menu/button image related settings. We might show too many atm
    # but this makes sure we don't miss cases where we forgot to force them
    # per widget.
    # https://bugzilla.gnome.org/show_bug.cgi?id=708676
    warnings.filterwarnings('ignore', '.*g_value_get_int.*', Warning)

    # some day... but not now
    warnings.filterwarnings(
        'ignore', '.*Stock items are deprecated.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*:use-stock.*', Warning)
    warnings.filterwarnings(
        'ignore', '.*The property GtkAlignment:[^\s]+ is deprecated.*',
        Warning)

    settings = Gtk.Settings.get_default()
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        settings.set_property("gtk-button-images", True)
        settings.set_property("gtk-menu-images", True)
    if hasattr(settings.props, "gtk_primary_button_warps_slider"):
        settings.set_property("gtk-primary-button-warps-slider", True)

    # Make sure PyGObject includes support for foreign cairo structs
    try:
        gi.require_foreign("cairo")
    except AttributeError:
        # older pygobject
        pass
    except ImportError:
        print_e("PyGObject is missing cairo support")
        exit(1)

    # CSS overrides
    if os.name == "nt":
        # somehow borders are missing under Windows & Gtk+3.14
        style_provider = Gtk.CssProvider()
        style_provider.load_from_data("""
            .menu {
                border: 1px solid @borders;
            }
        """)
        Gtk.StyleContext.add_provider_for_screen(
            Gdk.Screen.get_default(),
#.........这里部分代码省略.........

 def test_any_object(self):
     with capture_output() as (stdout, stderr):
         print_e(42)
     assert u"42" in stderr.getvalue()

 def test_basics(self):
     with capture_output() as (stdout, stderr):
         print_e(u"foo")
     assert u"foo" in stderr.getvalue()

#.........这里部分代码省略.........
    def is_time(str):
        if str[0] not in "+-0123456789":
            return False
        elif str[0] in "+-":
            str = str[1:]
        parts = str.split(":")
        if len(parts) > 3:
            return False
        else:
            return not (False in [p.isdigit() for p in parts])

    def is_float(str):
        try:
            float(str)
        except ValueError:
            return False
        else:
            return True

    validators = {
        "order": ["0", "1", "t", "toggle", "inorder", "shuffle",
                  "weighted", "onesong"].__contains__,
        "repeat": ["0", "1", "t", "on", "off", "toggle"].__contains__,
        "volume": is_vol,
        "seek": is_time,
        "set-rating": is_float,
        }

    cmds_todo = []

    def queue(*args):
        cmds_todo.append(args)

    # XXX: to make startup work in case the desktop file isn't passed
    # a file path/uri
    if argv[-1] == "--play-file":
        argv = argv[:-1]

    opts, args = options.parse(argv[1:])

    for command, arg in opts.items():
        if command in controls:
            queue(command)
        elif command in controls_opt:
            if command in validators and not validators[command](arg):
                print_e(_("Invalid argument for '%s'.") % command)
                print_e(_("Try %s --help.") % sys.argv[0])
                exit_(True, notify_startup=True)
            else:
                queue(command, arg)
        elif command == "status":
            queue("status")
        elif command == "print-playlist":
            queue("dump-playlist")
        elif command == "print-queue":
            queue("dump-queue")
        elif command == "list-browsers":
            queue("dump-browsers")
        elif command == "volume-up":
            queue("volume +")
        elif command == "volume-down":
            queue("volume -")
        elif command == "enqueue" or command == "unqueue":
            try:
                filename = URI(arg).filename
            except ValueError:
                filename = arg
            queue(command, filename)
        elif command == "enqueue-files":
            queue(command, arg)
        elif command == "play-file":
            try:
                filename = URI(arg).filename
            except ValueError:
                filename = os.path.abspath(util.path.expanduser(arg))
            queue("play-file", filename)
        elif command == "print-playing":
            try:
                queue("print-playing", args[0])
            except IndexError:
                queue("print-playing")
        elif command == "print-query":
            queue(command, arg)
        elif command == "print-query-text":
            queue(command)
        elif command == "start-playing":
            actions.append(command)
        elif command == "no-plugins":
            actions.append(command)
        elif command == "run":
            actions.append(command)

    if cmds_todo:
        for cmd in cmds_todo:
            control(*cmd, **{"ignore_error": "run" in actions})
    else:
        # this will exit if it succeeds
        control('focus', ignore_error=True)

    return actions, cmds_todo