Merge branch 'master' into ffnp

.git-blame-ignore-revs

@@ -71,3 +71,5 @@ d93ddf8dd43e4f9ed072a03829e287c78d2570a2
 07549ed896d9649562d40b75cd30702e6fa6e975
 # Moved plugin docs Further Reading chapter
 33f1a5d0bef8ca08be79ee7a0d02a018d502680d
+# Moved art.py utility module from beets into beetsplug
+28aee0fde463f1e18dfdba1994e2bdb80833722f

.github/CODEOWNERS

@@ -1,2 +1,5 @@
 # assign the entire repo to the maintainers team
 * @beetbox/maintainers
+
+# Specific ownerships:
+/beets/metadata_plugins.py @semohr

beets/dbcore/db.py

@@ -17,15 +17,17 @@
 from __future__ import annotations
 
 import contextlib
+import functools
 import os
 import re
 import sqlite3
+import sys
 import threading
 import time
 from abc import ABC
 from collections import defaultdict
 from collections.abc import Generator, Iterable, Iterator, Mapping, Sequence
-from sqlite3 import Connection
+from sqlite3 import Connection, sqlite_version_info
 from typing import TYPE_CHECKING, Any, AnyStr, Callable, Generic
 
 from typing_extensions import TypeVar  # default value support
@@ -64,6 +66,16 @@ class DBAccessError(Exception):
     """
 
 
+class DBCustomFunctionError(Exception):
+    """A sqlite function registered by beets failed."""
+
+    def __init__(self):
+        super().__init__(
+            "beets defined SQLite function failed; "
+            "see the other errors above for details"
+        )
+
+
 class FormattedMapping(Mapping[str, str]):
     """A `dict`-like formatted view of a model.
 
@@ -947,6 +959,12 @@ class Transaction:
             self._mutated = False
             self.db._db_lock.release()
 
+        if (
+            isinstance(exc_value, sqlite3.OperationalError)
+            and exc_value.args[0] == "user-defined function raised exception"
+        ):
+            raise DBCustomFunctionError()
+
     def query(
         self, statement: str, subvals: Sequence[SQLiteType] = ()
     ) -> list[sqlite3.Row]:
@@ -1007,6 +1025,13 @@ class Database:
                 "sqlite3 must be compiled with multi-threading support"
             )
 
+        # Print tracebacks for exceptions in user defined functions
+        # See also `self.add_functions` and `DBCustomFunctionError`.
+        #
+        # `if`: use feature detection because PyPy doesn't support this.
+        if hasattr(sqlite3, "enable_callback_tracebacks"):
+            sqlite3.enable_callback_tracebacks(True)
+
         self.path = path
         self.timeout = timeout
 
@@ -1102,9 +1127,16 @@ class Database:
 
             return bytestring
 
-        conn.create_function("regexp", 2, regexp)
-        conn.create_function("unidecode", 1, unidecode)
-        conn.create_function("bytelower", 1, bytelower)
+        create_function = conn.create_function
+        if sys.version_info >= (3, 8) and sqlite_version_info >= (3, 8, 3):
+            # Let sqlite make extra optimizations
+            create_function = functools.partial(
+                conn.create_function, deterministic=True
+            )
+
+        create_function("regexp", 2, regexp)
+        create_function("unidecode", 1, unidecode)
+        create_function("bytelower", 1, bytelower)
 
     def _close(self):
         """Close the all connections to the underlying SQLite database

beets/logging.py

@@ -20,6 +20,8 @@ use {}-style formatting and can interpolate keywords arguments to the logging
 calls (`debug`, `info`, etc).
 """
 
+from __future__ import annotations
+
 import threading
 from copy import copy
 from logging import (
@@ -32,8 +34,10 @@ from logging import (
     Handler,
     Logger,
     NullHandler,
+    RootLogger,
     StreamHandler,
 )
+from typing import TYPE_CHECKING, Any, Mapping, TypeVar, Union, overload
 
 __all__ = [
     "DEBUG",
@@ -49,8 +53,20 @@ __all__ = [
     "getLogger",
 ]
 
+if TYPE_CHECKING:
+    T = TypeVar("T")
+    from types import TracebackType
 
-def logsafe(val):
+    # see https://github.com/python/typeshed/blob/main/stdlib/logging/__init__.pyi
+    _SysExcInfoType = Union[
+        tuple[type[BaseException], BaseException, Union[TracebackType, None]],
+        tuple[None, None, None],
+    ]
+    _ExcInfoType = Union[None, bool, _SysExcInfoType, BaseException]
+    _ArgsType = Union[tuple[object, ...], Mapping[str, object]]
+
+
+def _logsafe(val: T) -> str | T:
     """Coerce `bytes` to `str` to avoid crashes solely due to logging.
 
     This is particularly relevant for bytestring paths. Much of our code
@@ -83,40 +99,45 @@ class StrFormatLogger(Logger):
     """
 
     class _LogMessage:
-        def __init__(self, msg, args, kwargs):
+        def __init__(
+            self,
+            msg: str,
+            args: _ArgsType,
+            kwargs: dict[str, Any],
+        ):
             self.msg = msg
             self.args = args
             self.kwargs = kwargs
 
         def __str__(self):
-            args = [logsafe(a) for a in self.args]
-            kwargs = {k: logsafe(v) for (k, v) in self.kwargs.items()}
+            args = [_logsafe(a) for a in self.args]
+            kwargs = {k: _logsafe(v) for (k, v) in self.kwargs.items()}
             return self.msg.format(*args, **kwargs)
 
     def _log(
         self,
-        level,
-        msg,
-        args,
-        exc_info=None,
-        extra=None,
-        stack_info=False,
+        level: int,
+        msg: object,
+        args: _ArgsType,
+        exc_info: _ExcInfoType = None,
+        extra: Mapping[str, Any] | None = None,
+        stack_info: bool = False,
+        stacklevel: int = 1,
         **kwargs,
     ):
         """Log msg.format(*args, **kwargs)"""
-        m = self._LogMessage(msg, args, kwargs)
 
-        stacklevel = kwargs.pop("stacklevel", 1)
-        stacklevel = {"stacklevel": stacklevel}
+        if isinstance(msg, str):
+            msg = self._LogMessage(msg, args, kwargs)
 
         return super()._log(
             level,
-            m,
+            msg,
             (),
             exc_info=exc_info,
             extra=extra,
             stack_info=stack_info,
-            **stacklevel,
+            stacklevel=stacklevel,
         )
 
 
@@ -156,9 +177,12 @@ my_manager = copy(Logger.manager)
 my_manager.loggerClass = BeetsLogger
 
 
-# Override the `getLogger` to use our machinery.
-def getLogger(name=None):  # noqa
+@overload
+def getLogger(name: str) -> BeetsLogger: ...
+@overload
+def getLogger(name: None = ...) -> RootLogger: ...
+def getLogger(name=None) -> BeetsLogger | RootLogger:  # noqa: N802
     if name:
-        return my_manager.getLogger(name)
+        return my_manager.getLogger(name)  # type: ignore[return-value]
     else:
         return Logger.root

beets/metadata_plugins.py

@@ -271,10 +271,9 @@ class MetadataSourcePlugin(BeetsPlugin, metaclass=abc.ABCMeta):
         """Returns an artist string (all artists) and an artist_id (the main
         artist) for a list of artist object dicts.
 
-        For each artist, this function moves articles (such as 'a', 'an',
-        and 'the') to the front and strips trailing disambiguation numbers. It
-        returns a tuple containing the comma-separated string of all
-        normalized artists and the ``id`` of the main/first artist.
+        For each artist, this function moves articles (such as 'a', 'an', and 'the')
+        to the front. It returns a tuple containing the comma-separated string
+        of all normalized artists and the ``id`` of the main/first artist.
         Alternatively a keyword can be used to combine artists together into a
         single string by passing the join_key argument.
 
@@ -298,8 +297,6 @@ class MetadataSourcePlugin(BeetsPlugin, metaclass=abc.ABCMeta):
             if not artist_id:
                 artist_id = artist[id_key]
             name = artist[name_key]
-            # Strip disambiguation number.
-            name = re.sub(r" \(\d+\)$", "", name)
             # Move articles to the front.
             name = re.sub(r"^(.*?), (a|an|the)$", r"\2 \1", name, flags=re.I)
             # Use a join keyword if requested and available.
@@ -371,7 +368,9 @@ class SearchApiMetadataSourcePlugin(
         album: str,
         va_likely: bool,
     ) -> Iterable[AlbumInfo]:
-        query_filters: SearchFilter = {"album": album}
+        query_filters: SearchFilter = {}
+        if album:
+            query_filters["album"] = album
         if not va_likely:
             query_filters["artist"] = artist
 
@@ -413,7 +412,7 @@ class SearchApiMetadataSourcePlugin(
         :return: Query string to be provided to the search API.
         """
 
-        components = [query_string, *(f'{k}:"{v}"' for k, v in filters.items())]
+        components = [query_string, *(f"{k}:'{v}'" for k, v in filters.items())]
         query = " ".join(filter(None, components))
 
         if self.config["search_query_ascii"].get():

beets/plugins.py

@@ -22,6 +22,7 @@ import re
 import sys
 from collections import defaultdict
 from functools import wraps
+from importlib import import_module
 from pathlib import Path
 from types import GenericAlias
 from typing import TYPE_CHECKING, Any, ClassVar, Literal, TypeVar
@@ -365,11 +366,11 @@ def _get_plugin(name: str) -> BeetsPlugin | None:
     """
     try:
         try:
-            namespace = __import__(f"{PLUGIN_NAMESPACE}.{name}", None, None)
+            namespace = import_module(f"{PLUGIN_NAMESPACE}.{name}")
         except Exception as exc:
             raise PluginImportError(name) from exc
 
-        for obj in getattr(namespace, name).__dict__.values():
+        for obj in namespace.__dict__.values():
             if (
                 inspect.isclass(obj)
                 and not isinstance(
@@ -378,6 +379,12 @@ def _get_plugin(name: str) -> BeetsPlugin | None:
                 and issubclass(obj, BeetsPlugin)
                 and obj != BeetsPlugin
                 and not inspect.isabstract(obj)
+                # Only consider this plugin's module or submodules to avoid
+                # conflicts when plugins import other BeetsPlugin classes
+                and (
+                    obj.__module__ == namespace.__name__
+                    or obj.__module__.startswith(f"{namespace.__name__}.")
+                )
             ):
                 return obj()
 

beetsplug/convert.py

@@ -25,12 +25,13 @@ from string import Template
 import mediafile
 from confuse import ConfigTypeError, Optional
 
-from beets import art, config, plugins, ui, util
+from beets import config, plugins, ui, util
 from beets.library import Item, parse_query_string
 from beets.plugins import BeetsPlugin
 from beets.util import par_map
 from beets.util.artresizer import ArtResizer
 from beets.util.m3u import M3UFile
+from beetsplug._utils import art
 
 _fs_lock = threading.Lock()
 _temp_files = []  # Keep track of temporary transcoded files for deletion.
@@ -121,6 +122,7 @@ class ConvertPlugin(BeetsPlugin):
                 "threads": os.cpu_count(),
                 "format": "mp3",
                 "id3v23": "inherit",
+                "write_metadata": True,
                 "formats": {
                     "aac": {
                         "command": (
@@ -445,7 +447,8 @@ class ConvertPlugin(BeetsPlugin):
             if id3v23 == "inherit":
                 id3v23 = None
 
-            # Write tags from the database to the converted file.
+            # Write tags from the database to the file if requested
+            if self.config["write_metadata"].get(bool):
                 item.try_write(path=converted, id3v23=id3v23)
 
             if keep_new:

beetsplug/discogs.py

@@ -76,6 +76,8 @@ TRACK_INDEX_RE = re.compile(
     re.VERBOSE,
 )
 
+DISAMBIGUATION_RE = re.compile(r" \(\d+\)")
+
 
 class ReleaseFormat(TypedDict):
     name: str
@@ -96,6 +98,7 @@ class DiscogsPlugin(MetadataSourcePlugin):
                 "separator": ", ",
                 "index_tracks": False,
                 "append_style_genre": False,
+                "strip_disambiguation": True,
             }
         )
         self.config["apikey"].redact = True
@@ -336,7 +339,7 @@ class DiscogsPlugin(MetadataSourcePlugin):
         # convenient `.tracklist` property, which will strip out useful artist
         # information and leave us with skeleton `Artist` objects that will
         # each make an API call just to get the same data back.
-        tracks = self.get_tracks(result.data["tracklist"])
+        tracks = self.get_tracks(result.data["tracklist"], artist, artist_id)
 
         # Extract information for the optional AlbumInfo fields, if possible.
         va = result.data["artists"][0].get("name", "").lower() == "various"
@@ -362,15 +365,20 @@ class DiscogsPlugin(MetadataSourcePlugin):
 
         label = catalogno = labelid = None
         if result.data.get("labels"):
-            label = result.data["labels"][0].get("name")
+            label = self.strip_disambiguation(
+                result.data["labels"][0].get("name")
+            )
             catalogno = result.data["labels"][0].get("catno")
             labelid = result.data["labels"][0].get("id")
 
         cover_art_url = self.select_cover_art(result)
 
-        # Additional cleanups (various artists name, catalog number, media).
+        # Additional cleanups
+        # (various artists name, catalog number, media, disambiguation).
         if va:
             artist = config["va_name"].as_str()
+        else:
+            artist = self.strip_disambiguation(artist)
         if catalogno == "none":
             catalogno = None
         # Explicitly set the `media` for the tracks, since it is expected by
@@ -378,10 +386,6 @@ class DiscogsPlugin(MetadataSourcePlugin):
         for track in tracks:
             track.media = media
             track.medium_total = mediums.count(track.medium)
-            if not track.artist:  # get_track_info often fails to find artist
-                track.artist = artist
-            if not track.artist_id:
-                track.artist_id = artist_id
             # Discogs does not have track IDs. Invent our own IDs as proposed
             # in #2336.
             track.track_id = f"{album_id}-{track.track_alt}"
@@ -438,7 +442,7 @@ class DiscogsPlugin(MetadataSourcePlugin):
         else:
             return None
 
-    def get_tracks(self, tracklist):
+    def get_tracks(self, tracklist, album_artist, album_artist_id):
         """Returns a list of TrackInfo objects for a discogs tracklist."""
         try:
             clean_tracklist = self.coalesce_tracks(tracklist)
@@ -463,7 +467,9 @@ class DiscogsPlugin(MetadataSourcePlugin):
                     # divisions.
                     divisions += next_divisions
                     del next_divisions[:]
-                track_info = self.get_track_info(track, index, divisions)
+                track_info = self.get_track_info(
+                    track, index, divisions, album_artist, album_artist_id
+                )
                 track_info.track_alt = track["position"]
                 tracks.append(track_info)
             else:
@@ -622,7 +628,17 @@ class DiscogsPlugin(MetadataSourcePlugin):
 
         return tracklist
 
-    def get_track_info(self, track, index, divisions):
+    def strip_disambiguation(self, text: str) -> str:
+        """Removes discogs specific disambiguations from a string.
+        Turns 'Label Name (5)' to 'Label Name' or 'Artist (1) & Another Artist (2)'
+        to 'Artist & Another Artist'. Does nothing if strip_disambiguation is False."""
+        if not self.config["strip_disambiguation"]:
+            return text
+        return DISAMBIGUATION_RE.sub("", text)
+
+    def get_track_info(
+        self, track, index, divisions, album_artist, album_artist_id
+    ):
         """Returns a TrackInfo object for a discogs track."""
         title = track["title"]
         if self.config["index_tracks"]:
@@ -634,7 +650,21 @@ class DiscogsPlugin(MetadataSourcePlugin):
         artist, artist_id = self.get_artist(
             track.get("artists", []), join_key="join"
         )
+        # If no artist and artist is returned, set to match album artist
+        if not artist:
+            artist = album_artist
+            artist_id = album_artist_id
         length = self.get_track_length(track["duration"])
+        # Add featured artists
+        extraartists = track.get("extraartists", [])
+        featured = [
+            artist["name"]
+            for artist in extraartists
+            if "Featuring" in artist["role"]
+        ]
+        if featured:
+            artist = f"{artist} feat. {', '.join(featured)}"
+        artist = self.strip_disambiguation(artist)
         return TrackInfo(
             title=title,
             track_id=track_id,

beetsplug/embedart.py

@@ -20,11 +20,12 @@ from mimetypes import guess_extension
 
 import requests
 
-from beets import art, config, ui
+from beets import config, ui
 from beets.plugins import BeetsPlugin
 from beets.ui import print_
 from beets.util import bytestring_path, displayable_path, normpath, syspath
 from beets.util.artresizer import ArtResizer
+from beetsplug._utils import art
 
 
 def _confirm(objs, album):

beetsplug/fetchart.py

@@ -36,10 +36,10 @@ from beets.util.config import sanitize_pairs
 
 if TYPE_CHECKING:
     from collections.abc import Iterable, Iterator, Sequence
-    from logging import Logger
 
     from beets.importer import ImportSession, ImportTask
     from beets.library import Album, Library
+    from beets.logging import BeetsLogger as Logger
 
 try:
     from bs4 import BeautifulSoup, Tag

beetsplug/ftintitle.py

@@ -26,14 +26,16 @@ if TYPE_CHECKING:
     from beets.library import Item
 
 
-def split_on_feat(artist: str) -> tuple[str, str | None]:
+def split_on_feat(
+    artist: str, for_artist: bool = True
+) -> tuple[str, str | None]:
     """Given an artist string, split the "main" artist from any artist
     on the right-hand side of a string like "feat". Return the main
     artist, which is always a string, and the featuring artist, which
     may be a string or None if none is present.
     """
     # split on the first "feat".
-    regex = re.compile(plugins.feat_tokens(), re.IGNORECASE)
+    regex = re.compile(plugins.feat_tokens(for_artist), re.IGNORECASE)
     parts = tuple(s.strip() for s in regex.split(artist, 1))
     if len(parts) == 1:
         return parts[0], None
@@ -53,32 +55,35 @@ def contains_feat(title: str) -> bool:
     )
 
 
-def find_feat_part(artist: str, albumartist: str) -> str | None:
+def find_feat_part(artist: str, albumartist: str | None) -> str | None:
     """Attempt to find featured artists in the item's artist fields and
     return the results. Returns None if no featured artist found.
     """
-    # Look for the album artist in the artist field. If it's not
-    # present, give up.
+    # Handle a wider variety of extraction cases if the album artist is
+    # contained within the track artist.
+    if albumartist and albumartist in artist:
         albumartist_split = artist.split(albumartist, 1)
-    if len(albumartist_split) <= 1:
-        return None
 
         # If the last element of the split (the right-hand side of the
         # album artist) is nonempty, then it probably contains the
         # featured artist.
-    elif albumartist_split[1] != "":
+        if albumartist_split[1] != "":
             # Extract the featured artist from the right-hand side.
             _, feat_part = split_on_feat(albumartist_split[1])
             return feat_part
 
-    # Otherwise, if there's nothing on the right-hand side, look for a
-    # featuring artist on the left-hand side.
+        # Otherwise, if there's nothing on the right-hand side,
+        # look for a featuring artist on the left-hand side.
         else:
-        lhs, rhs = split_on_feat(albumartist_split[0])
+            lhs, _ = split_on_feat(albumartist_split[0])
             if lhs:
                 return lhs
 
-    return None
+    # Fall back to conservative handling of the track artist without relying
+    # on albumartist, which covers compilations using a 'Various Artists'
+    # albumartist and album tracks by a guest artist featuring a third artist.
+    _, feat_part = split_on_feat(artist, False)
+    return feat_part
 
 
 class FtInTitlePlugin(plugins.BeetsPlugin):
@@ -153,8 +158,9 @@ class FtInTitlePlugin(plugins.BeetsPlugin):
                 "artist: {.artist} (Not changing due to keep_in_artist)", item
             )
         else:
-            self._log.info("artist: {0.artist} -> {0.albumartist}", item)
-            item.artist = item.albumartist
+            track_artist, _ = split_on_feat(item.artist)
+            self._log.info("artist: {0.artist} -> {1}", item, track_artist)
+            item.artist = track_artist
 
         if item.artist_sort:
             # Just strip the featured artist from the sort name.
@@ -187,7 +193,7 @@ class FtInTitlePlugin(plugins.BeetsPlugin):
         # Check whether there is a featured artist on this track and the
         # artist field does not exactly match the album artist field. In
         # that case, we attempt to move the featured artist to the title.
-        if not albumartist or albumartist == artist:
+        if albumartist and artist == albumartist:
             return False
 
         _, featured = split_on_feat(artist)

beetsplug/lastgenre/__init__.py

@@ -461,6 +461,12 @@ class LastGenrePlugin(plugins.BeetsPlugin):
 
     def commands(self):
         lastgenre_cmd = ui.Subcommand("lastgenre", help="fetch genres")
+        lastgenre_cmd.parser.add_option(
+            "-p",
+            "--pretend",
+            action="store_true",
+            help="show actions but do nothing",
+        )
         lastgenre_cmd.parser.add_option(
             "-f",
             "--force",
@@ -521,17 +527,23 @@ class LastGenrePlugin(plugins.BeetsPlugin):
 
         def lastgenre_func(lib, opts, args):
             write = ui.should_write()
+            pretend = getattr(opts, "pretend", False)
             self.config.set_args(opts)
 
             if opts.album:
                 # Fetch genres for whole albums
                 for album in lib.albums(args):
-                    album.genre, src = self._get_genre(album)
+                    album_genre, src = self._get_genre(album)
+                    prefix = "Pretend: " if pretend else ""
                     self._log.info(
-                        'genre for album "{0.album}" ({1}): {0.genre}',
+                        '{}genre for album "{.album}" ({}): {}',
+                        prefix,
                         album,
                         src,
+                        album_genre,
                     )
+                    if not pretend:
+                        album.genre = album_genre
                         if "track" in self.sources:
                             album.store(inherit=False)
                         else:
@@ -541,25 +553,38 @@ class LastGenrePlugin(plugins.BeetsPlugin):
                         # If we're using track-level sources, also look up each
                         # track on the album.
                         if "track" in self.sources:
-                            item.genre, src = self._get_genre(item)
-                            item.store()
+                            item_genre, src = self._get_genre(item)
                             self._log.info(
-                                'genre for track "{0.title}" ({1}): {0.genre}',
+                                '{}genre for track "{.title}" ({}): {}',
+                                prefix,
                                 item,
                                 src,
+                                item_genre,
                             )
+                            if not pretend:
+                                item.genre = item_genre
+                                item.store()
 
-                        if write:
+                        if write and not pretend:
                             item.try_write()
             else:
                 # Just query singletons, i.e. items that are not part of
                 # an album
                 for item in lib.items(args):
-                    item.genre, src = self._get_genre(item)
-                    item.store()
+                    item_genre, src = self._get_genre(item)
+                    prefix = "Pretend: " if pretend else ""
                     self._log.info(
-                        "genre for track {0.title} ({1}): {0.genre}", item, src
+                        '{}genre for track "{0.title}" ({1}): {}',
+                        prefix,
+                        item,
+                        src,
+                        item_genre,
                     )
+                    if not pretend:
+                        item.genre = item_genre
+                        item.store()
+                    if write and not pretend:
+                        item.try_write()
 
         lastgenre_cmd.func = lastgenre_func
         return [lastgenre_cmd]

beetsplug/lyrics.py

@@ -42,10 +42,9 @@ from beets.autotag.distance import string_dist
 from beets.util.config import sanitize_choices
 
 if TYPE_CHECKING:
-    from logging import Logger
-
     from beets.importer import ImportTask
     from beets.library import Item, Library
+    from beets.logging import BeetsLogger as Logger
 
     from ._typing import (
         GeniusAPI,
@@ -186,7 +185,7 @@ def slug(text: str) -> str:
 
 
 class RequestHandler:
-    _log: beets.logging.Logger
+    _log: Logger
 
     def debug(self, message: str, *args) -> None:
         """Log a debug message with the class name."""

beetsplug/spotify.py

@@ -130,9 +130,6 @@ class SpotifyPlugin(
                 "mode": "list",
                 "tiebreak": "popularity",
                 "show_failures": False,
-                "artist_field": "albumartist",
-                "album_field": "album",
-                "track_field": "title",
                 "region_filter": None,
                 "regex": [],
                 "client_id": "4e414367a1d14c75a5c5129a627fcab8",
@@ -563,13 +560,17 @@ class SpotifyPlugin(
                     regex["search"], regex["replace"], value
                 )
 
-            # Custom values can be passed in the config (just in case)
-            artist = item[self.config["artist_field"].get()]
-            album = item[self.config["album_field"].get()]
-            query_string = item[self.config["track_field"].get()]
+            artist = item["artist"] or item["albumartist"]
+            album = item["album"]
+            query_string = item["title"]
 
             # Query the Web API for each track, look for the items' JSON data
-            query_filters: SearchFilter = {"artist": artist, "album": album}
+            query_filters: SearchFilter = {}
+            if artist:
+                query_filters["artist"] = artist
+            if album:
+                query_filters["album"] = album
+
             response_data_tracks = self._search_api(
                 query_type="track",
                 query_string=query_string,

docs/changelog.rst

@@ -9,10 +9,33 @@ Unreleased
 
 New features:
 
+- :doc:`plugins/lastgenre`: Add a ``--pretend`` option to preview genre changes
+  without storing or writing them.
+- :doc:`plugins/convert`: Add a config option to disable writing metadata to
+  converted files.
+- :doc:`plugins/discogs`: New config option `strip_disambiguation` to toggle
+  stripping discogs numeric disambiguation on artist and label fields.
+- :doc:`plugins/discogs` Added support for featured artists.
+
 Bug fixes:
 
 - :doc:`/plugins/fromfilename`: Fix :bug:`5218`, improve the code (refactor
   regexps, allow for more cases, add some logging), add tests.
+- :doc:`plugins/spotify` Fixed an issue where track matching and lookups could
+  return incorrect or misleading results when using the Spotify plugin. The
+  problem occurred primarily when no album was provided or when the album field
+  was an empty string. :bug:`5189`
+- :doc:`plugins/spotify` Removed old and undocumented config options
+  `artist_field`, `album_field` and `track` that were causing issues with track
+  matching. :bug:`5189`
+- :doc:`plugins/discogs` Fixed inconsistency in stripping disambiguation from
+  artists but not labels. :bug:`5366`
+- :doc:`plugins/discogs` Fixed issue with ignoring featured artists in the
+  extraartists field.
+- :doc:`plugins/spotify` Fixed an issue where candidate lookup would not find
+  matches due to query escaping (single vs double quotes).
+- :doc:`plugins/chroma` :doc:`plugins/bpsync` Fix plugin loading issue caused by
+  an import of another :class:`beets.plugins.BeetsPlugin` class. :bug:`6033`
 
 For packagers:
 
@@ -24,6 +47,17 @@ Other changes:
   match :bug:`6020`
 - :doc:`guides/tagger`: Section on no matching release found, related to
   possibly disabled musicbrainz plugin :bug:`6020`
+- Moved ``art.py`` utility module from ``beets`` into ``beetsplug`` namespace as
+  it is not used in the core beets codebase. It can now be found in
+  ``beetsplug._utils``.
+- :class:`beets.metadata_plugin.MetadataSourcePlugin`: Remove discogs specific
+  disambiguation stripping.
+
+For developers and plugin authors:
+
+- Typing improvements in ``beets/logging.py``: ``getLogger`` now returns
+  ``BeetsLogger`` when called with a name, or ``RootLogger`` when called without
+  a name.
 
 2.4.0 (September 13, 2025)
 --------------------------
@@ -150,6 +184,9 @@ Other changes:
   Autogenerated API references are now located in the ``docs/api`` subdirectory.
 - :doc:`/plugins/substitute`: Fix rST formatting for example cases so that each
   case is shown on separate lines.
+- :doc:`/plugins/ftintitle`: Process items whose albumartist is not contained in
+  the artist field, including compilations using Various Artists as an
+  albumartist and album tracks by guest artists featuring a third artist.
 - Refactored library.py file by splitting it into multiple modules within the
   beets/library directory.
 - Added a test to check that all plugins can be imported without errors.

docs/plugins/convert.rst

@@ -97,6 +97,8 @@ The available options are:
 - **embed**: Embed album art in converted items. Default: ``yes``.
 - **id3v23**: Can be used to override the global ``id3v23`` option. Default:
   ``inherit``.
+- **write_metadata**: Can be used to disable writing metadata to converted
+  files. Default: ``true``.
 - **max_bitrate**: By default, the plugin does not transcode files that are
   already in the destination format. This option instead also transcodes files
   with high bitrates, even if they are already in the same format as the output.

docs/plugins/discogs.rst

@@ -109,6 +109,9 @@ Other configurations available under ``discogs:`` are:
 - **search_limit**: The maximum number of results to return from Discogs. This
   is useful if you want to limit the number of results returned to speed up
   searches. Default: ``5``
+- **strip_disambiguation**: Discogs uses strings like ``"(4)"`` to mark distinct
+  artists and labels with the same name. If you'd like to use the discogs
+  disambiguation in your tags, you can disable it. Default: ``True``
 
 .. _discogs guidelines: https://support.discogs.com/hc/en-us/articles/360005055373-Database-Guidelines-12-Tracklisting#Index_Tracks_And_Headings
 

docs/plugins/lastgenre.rst

@@ -124,7 +124,7 @@ tags** and will only **fetch new genres for empty tags**. When ``force`` is
 ``yes`` the setting of the ``whitelist`` option (as documented in Usage_)
 applies to any existing or newly fetched genres.
 
-The follwing configurations are possible:
+The following configurations are possible:
 
 **Setup 1** (default)
 
@@ -213,5 +213,9 @@ fetch genres for albums or items matching a certain query.
 By default, ``beet lastgenre`` matches albums. To match individual tracks or
 singletons, use the ``-A`` switch: ``beet lastgenre -A [QUERY]``.
 
+To preview the changes that would be made without applying them, use the ``-p``
+or ``--pretend`` flag. This shows which genres would be set but does not write
+or store any changes.
+
 To disable automatic genre fetching on import, set the ``auto`` config option to
 false.

docs/plugins/missing.rst

@@ -39,21 +39,27 @@ Configuration
 To configure the plugin, make a ``missing:`` section in your configuration file.
 The available options are:
 
-- **count**: Print a count of missing tracks per album, with ``format``
-  defaulting to ``$albumartist - $album: $missing``. Default: ``no``.
-- **format**: A specific format with which to print every track. This uses the
-  same template syntax as beets' :doc:`path formats </reference/pathformat>`.
-  The usage is inspired by, and therefore similar to, the :ref:`list <list-cmd>`
-  command. Default: :ref:`format_item`.
+- **count**: Print a count of missing tracks per album, with the global
+  ``format_album`` used for formatting. Default: ``no``.
 - **total**: Print a single count of missing tracks in all albums. Default:
   ``no``.
 
+Formatting
+~~~~~~~~~~
+
+- This plugin uses global formatting options from the main configuration; see
+  :ref:`format_item` and :ref:`format_album`:
+- :ref:`format_item`: Used when listing missing tracks (default item format).
+- :ref:`format_album`: Used when showing counts (``-c``) or missing albums
+  (``-a``).
+
 Here's an example
 
 ::
 
+    format_album: $albumartist - $album
+    format_item: $artist - $album - $title
     missing:
-        format: $albumartist - $album - $title
         count: no
         total: no
 

test/plugins/test_discogs.py

@@ -374,6 +374,129 @@ class DGAlbumInfoTest(BeetsTestCase):
         assert d.genre == "GENRE1, GENRE2"
         assert d.style is None
 
+    def test_strip_disambiguation(self):
+        """Test removing disambiguation from all disambiguated fields."""
+        data = {
+            "id": 123,
+            "uri": "https://www.discogs.com/release/123456-something",
+            "tracklist": [
+                {
+                    "title": "track",
+                    "position": "A",
+                    "type_": "track",
+                    "duration": "5:44",
+                    "artists": [
+                        {"name": "TEST ARTIST (5)", "tracks": "", "id": 11146}
+                    ],
+                }
+            ],
+            "artists": [
+                {"name": "ARTIST NAME (2)", "id": 321, "join": "&"},
+                {"name": "OTHER ARTIST (5)", "id": 321, "join": ""},
+            ],
+            "title": "title",
+            "labels": [
+                {
+                    "name": "LABEL NAME (5)",
+                    "catno": "catalog number",
+                }
+            ],
+        }
+        release = Bag(
+            data=data,
+            title=data["title"],
+            artists=[Bag(data=d) for d in data["artists"]],
+        )
+        d = DiscogsPlugin().get_album_info(release)
+        assert d.artist == "ARTIST NAME & OTHER ARTIST"
+        assert d.tracks[0].artist == "TEST ARTIST"
+        assert d.label == "LABEL NAME"
+
+    def test_strip_disambiguation_false(self):
+        """Test disabling disambiguation removal from all disambiguated fields."""
+        config["discogs"]["strip_disambiguation"] = False
+        data = {
+            "id": 123,
+            "uri": "https://www.discogs.com/release/123456-something",
+            "tracklist": [
+                {
+                    "title": "track",
+                    "position": "A",
+                    "type_": "track",
+                    "duration": "5:44",
+                    "artists": [
+                        {"name": "TEST ARTIST (5)", "tracks": "", "id": 11146}
+                    ],
+                }
+            ],
+            "artists": [
+                {"name": "ARTIST NAME (2)", "id": 321, "join": "&"},
+                {"name": "OTHER ARTIST (5)", "id": 321, "join": ""},
+            ],
+            "title": "title",
+            "labels": [
+                {
+                    "name": "LABEL NAME (5)",
+                    "catno": "catalog number",
+                }
+            ],
+        }
+        release = Bag(
+            data=data,
+            title=data["title"],
+            artists=[Bag(data=d) for d in data["artists"]],
+        )
+        d = DiscogsPlugin().get_album_info(release)
+        assert d.artist == "ARTIST NAME (2) & OTHER ARTIST (5)"
+        assert d.tracks[0].artist == "TEST ARTIST (5)"
+        assert d.label == "LABEL NAME (5)"
+        config["discogs"]["strip_disambiguation"] = True
+
+
+@pytest.mark.parametrize(
+    "track, expected_artist",
+    [
+        (
+            {
+                "type_": "track",
+                "title": "track",
+                "position": "1",
+                "duration": "5:00",
+                "artists": [
+                    {"name": "NEW ARTIST", "tracks": "", "id": 11146},
+                    {"name": "VOCALIST", "tracks": "", "id": 344, "join": "&"},
+                ],
+                "extraartists": [
+                    {
+                        "name": "SOLOIST",
+                        "role": "Featuring",
+                    },
+                    {
+                        "name": "PERFORMER (1)",
+                        "role": "Other Role, Featuring",
+                    },
+                    {
+                        "name": "RANDOM",
+                        "role": "Written-By",
+                    },
+                    {
+                        "name": "MUSICIAN",
+                        "role": "Featuring [Uncredited]",
+                    },
+                ],
+            },
+            "NEW ARTIST, VOCALIST feat. SOLOIST, PERFORMER, MUSICIAN",
+        ),
+    ],
+)
+@patch("beetsplug.discogs.DiscogsPlugin.setup", Mock())
+def test_parse_featured_artists(track, expected_artist):
+    """Tests the plugins ability to parse a featured artist.
+    Initial check with one featured artist, two featured artists,
+    and three. Ignores artists that are not listed as featured."""
+    t = DiscogsPlugin().get_track_info(track, 1, 1, "ARTIST", 2)
+    assert t.artist == expected_artist
+
 
 @pytest.mark.parametrize(
     "formats, expected_media, expected_albumtype",

test/plugins/test_embedart.py

@@ -23,7 +23,7 @@ from unittest.mock import MagicMock, patch
 import pytest
 from mediafile import MediaFile
 
-from beets import art, config, logging, ui
+from beets import config, logging, ui
 from beets.test import _common
 from beets.test.helper import (
     BeetsTestCase,
@@ -33,6 +33,7 @@ from beets.test.helper import (
 )
 from beets.util import bytestring_path, displayable_path, syspath
 from beets.util.artresizer import ArtResizer
+from beetsplug._utils import art
 from test.test_art_resize import DummyIMBackend
 
 
@@ -283,7 +284,7 @@ class DummyArtResizer(ArtResizer):
 
 
 @patch("beets.util.artresizer.subprocess")
-@patch("beets.art.extract")
+@patch("beetsplug._utils.art.extract")
 class ArtSimilarityTest(unittest.TestCase):
     def setUp(self):
         self.item = _common.item()

test/plugins/test_ftintitle.py

@@ -14,8 +14,11 @@
 
 """Tests for the 'ftintitle' plugin."""
 
-import unittest
+from typing import Dict, Generator, Optional, Tuple, Union
 
+import pytest
+
+from beets.library.models import Item
 from beets.test.helper import PluginTestCase
 from beetsplug import ftintitle
 
@@ -23,169 +26,233 @@ from beetsplug import ftintitle
 class FtInTitlePluginFunctional(PluginTestCase):
     plugin = "ftintitle"
 
-    def _ft_add_item(self, path, artist, title, aartist):
-        return self.add_item(
+
+@pytest.fixture
+def env() -> Generator[FtInTitlePluginFunctional, None, None]:
+    case = FtInTitlePluginFunctional(methodName="runTest")
+    case.setUp()
+    try:
+        yield case
+    finally:
+        case.tearDown()
+
+
+def set_config(
+    env: FtInTitlePluginFunctional, cfg: Optional[Dict[str, Union[str, bool]]]
+) -> None:
+    cfg = {} if cfg is None else cfg
+    defaults = {
+        "drop": False,
+        "auto": True,
+        "keep_in_artist": False,
+    }
+    env.config["ftintitle"].set(defaults)
+    env.config["ftintitle"].set(cfg)
+
+
+def add_item(
+    env: FtInTitlePluginFunctional,
+    path: str,
+    artist: str,
+    title: str,
+    albumartist: Optional[str],
+) -> Item:
+    return env.add_item(
         path=path,
         artist=artist,
         artist_sort=artist,
         title=title,
-            albumartist=aartist,
+        albumartist=albumartist,
     )
 
-    def _ft_set_config(
-        self, ftformat, drop=False, auto=True, keep_in_artist=False
-    ):
-        self.config["ftintitle"]["format"] = ftformat
-        self.config["ftintitle"]["drop"] = drop
-        self.config["ftintitle"]["auto"] = auto
-        self.config["ftintitle"]["keep_in_artist"] = keep_in_artist
 
-    def test_functional_drop(self):
-        item = self._ft_add_item("/", "Alice ft Bob", "Song 1", "Alice")
-        self.run_command("ftintitle", "-d")
-        item.load()
-        assert item["artist"] == "Alice"
-        assert item["title"] == "Song 1"
-
-    def test_functional_not_found(self):
-        item = self._ft_add_item("/", "Alice ft Bob", "Song 1", "George")
-        self.run_command("ftintitle", "-d")
-        item.load()
-        # item should be unchanged
-        assert item["artist"] == "Alice ft Bob"
-        assert item["title"] == "Song 1"
-
-    def test_functional_custom_format(self):
-        self._ft_set_config("feat. {}")
-        item = self._ft_add_item("/", "Alice ft Bob", "Song 1", "Alice")
-        self.run_command("ftintitle")
-        item.load()
-        assert item["artist"] == "Alice"
-        assert item["title"] == "Song 1 feat. Bob"
-
-        self._ft_set_config("featuring {}")
-        item = self._ft_add_item("/", "Alice feat. Bob", "Song 1", "Alice")
-        self.run_command("ftintitle")
-        item.load()
-        assert item["artist"] == "Alice"
-        assert item["title"] == "Song 1 featuring Bob"
-
-        self._ft_set_config("with {}")
-        item = self._ft_add_item("/", "Alice feat Bob", "Song 1", "Alice")
-        self.run_command("ftintitle")
-        item.load()
-        assert item["artist"] == "Alice"
-        assert item["title"] == "Song 1 with Bob"
-
-    def test_functional_keep_in_artist(self):
-        self._ft_set_config("feat. {}", keep_in_artist=True)
-        item = self._ft_add_item("/", "Alice ft Bob", "Song 1", "Alice")
-        self.run_command("ftintitle")
-        item.load()
-        assert item["artist"] == "Alice ft Bob"
-        assert item["title"] == "Song 1 feat. Bob"
-
-        item = self._ft_add_item("/", "Alice ft Bob", "Song 1", "Alice")
-        self.run_command("ftintitle", "-d")
-        item.load()
-        assert item["artist"] == "Alice ft Bob"
-        assert item["title"] == "Song 1"
-
-
-class FtInTitlePluginTest(unittest.TestCase):
-    def setUp(self):
-        """Set up configuration"""
+@pytest.mark.parametrize(
+    "cfg, cmd_args, given, expected",
+    [
+        pytest.param(
+            None,
+            ("ftintitle",),
+            ("Alice", "Song 1", "Alice"),
+            ("Alice", "Song 1"),
+            id="no-featured-artist",
+        ),
+        pytest.param(
+            {"format": "feat {0}"},
+            ("ftintitle",),
+            ("Alice ft. Bob", "Song 1", None),
+            ("Alice", "Song 1 feat Bob"),
+            id="no-albumartist-custom-format",
+        ),
+        pytest.param(
+            None,
+            ("ftintitle",),
+            ("Alice", "Song 1", None),
+            ("Alice", "Song 1"),
+            id="no-albumartist-no-feature",
+        ),
+        pytest.param(
+            {"format": "featuring {0}"},
+            ("ftintitle",),
+            ("Alice ft Bob", "Song 1", "George"),
+            ("Alice", "Song 1 featuring Bob"),
+            id="guest-artist-custom-format",
+        ),
+        pytest.param(
+            None,
+            ("ftintitle",),
+            ("Alice", "Song 1", "George"),
+            ("Alice", "Song 1"),
+            id="guest-artist-no-feature",
+        ),
+        # ---- drop (-d) variants ----
+        pytest.param(
+            None,
+            ("ftintitle", "-d"),
+            ("Alice ft Bob", "Song 1", "Alice"),
+            ("Alice", "Song 1"),
+            id="drop-self-ft",
+        ),
+        pytest.param(
+            None,
+            ("ftintitle", "-d"),
+            ("Alice", "Song 1", "Alice"),
+            ("Alice", "Song 1"),
+            id="drop-self-no-ft",
+        ),
+        pytest.param(
+            None,
+            ("ftintitle", "-d"),
+            ("Alice ft Bob", "Song 1", "George"),
+            ("Alice", "Song 1"),
+            id="drop-guest-ft",
+        ),
+        pytest.param(
+            None,
+            ("ftintitle", "-d"),
+            ("Alice", "Song 1", "George"),
+            ("Alice", "Song 1"),
+            id="drop-guest-no-ft",
+        ),
+        # ---- custom format variants ----
+        pytest.param(
+            {"format": "feat. {}"},
+            ("ftintitle",),
+            ("Alice ft Bob", "Song 1", "Alice"),
+            ("Alice", "Song 1 feat. Bob"),
+            id="custom-format-feat-dot",
+        ),
+        pytest.param(
+            {"format": "featuring {}"},
+            ("ftintitle",),
+            ("Alice feat. Bob", "Song 1", "Alice"),
+            ("Alice", "Song 1 featuring Bob"),
+            id="custom-format-featuring",
+        ),
+        pytest.param(
+            {"format": "with {}"},
+            ("ftintitle",),
+            ("Alice feat Bob", "Song 1", "Alice"),
+            ("Alice", "Song 1 with Bob"),
+            id="custom-format-with",
+        ),
+        # ---- keep_in_artist variants ----
+        pytest.param(
+            {"format": "feat. {}", "keep_in_artist": True},
+            ("ftintitle",),
+            ("Alice ft Bob", "Song 1", "Alice"),
+            ("Alice ft Bob", "Song 1 feat. Bob"),
+            id="keep-in-artist-add-to-title",
+        ),
+        pytest.param(
+            {"format": "feat. {}", "keep_in_artist": True},
+            ("ftintitle", "-d"),
+            ("Alice ft Bob", "Song 1", "Alice"),
+            ("Alice ft Bob", "Song 1"),
+            id="keep-in-artist-drop-from-title",
+        ),
+    ],
+)
+def test_ftintitle_functional(
+    env: FtInTitlePluginFunctional,
+    cfg: Optional[Dict[str, Union[str, bool]]],
+    cmd_args: Tuple[str, ...],
+    given: Tuple[str, str, Optional[str]],
+    expected: Tuple[str, str],
+) -> None:
+    set_config(env, cfg)
     ftintitle.FtInTitlePlugin()
 
-    def test_find_feat_part(self):
-        test_cases = [
-            {
-                "artist": "Alice ft. Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice feat Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice featuring Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice & Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice and Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice With Bob",
-                "album_artist": "Alice",
-                "feat_part": "Bob",
-            },
-            {
-                "artist": "Alice defeat Bob",
-                "album_artist": "Alice",
-                "feat_part": None,
-            },
-            {
-                "artist": "Alice & Bob",
-                "album_artist": "Bob",
-                "feat_part": "Alice",
-            },
-            {
-                "artist": "Alice ft. Bob",
-                "album_artist": "Bob",
-                "feat_part": "Alice",
-            },
-            {
-                "artist": "Alice ft. Carol",
-                "album_artist": "Bob",
-                "feat_part": None,
-            },
-        ]
+    artist, title, albumartist = given
+    item = add_item(env, "/", artist, title, albumartist)
 
-        for test_case in test_cases:
-            feat_part = ftintitle.find_feat_part(
-                test_case["artist"], test_case["album_artist"]
+    env.run_command(*cmd_args)
+    item.load()
+
+    expected_artist, expected_title = expected
+    assert item["artist"] == expected_artist
+    assert item["title"] == expected_title
+
+
+@pytest.mark.parametrize(
+    "artist,albumartist,expected",
+    [
+        ("Alice ft. Bob", "Alice", "Bob"),
+        ("Alice feat Bob", "Alice", "Bob"),
+        ("Alice featuring Bob", "Alice", "Bob"),
+        ("Alice & Bob", "Alice", "Bob"),
+        ("Alice and Bob", "Alice", "Bob"),
+        ("Alice With Bob", "Alice", "Bob"),
+        ("Alice defeat Bob", "Alice", None),
+        ("Alice & Bob", "Bob", "Alice"),
+        ("Alice ft. Bob", "Bob", "Alice"),
+        ("Alice ft. Carol", "Bob", "Carol"),
+    ],
 )
-            assert feat_part == test_case["feat_part"]
+def test_find_feat_part(
+    artist: str,
+    albumartist: str,
+    expected: Optional[str],
+) -> None:
+    assert ftintitle.find_feat_part(artist, albumartist) == expected
 
-    def test_split_on_feat(self):
-        parts = ftintitle.split_on_feat("Alice ft. Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice feat Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice feat. Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice featuring Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice & Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice and Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice With Bob")
-        assert parts == ("Alice", "Bob")
-        parts = ftintitle.split_on_feat("Alice defeat Bob")
-        assert parts == ("Alice defeat Bob", None)
 
-    def test_contains_feat(self):
-        assert ftintitle.contains_feat("Alice ft. Bob")
-        assert ftintitle.contains_feat("Alice feat. Bob")
-        assert ftintitle.contains_feat("Alice feat Bob")
-        assert ftintitle.contains_feat("Alice featuring Bob")
-        assert ftintitle.contains_feat("Alice (ft. Bob)")
-        assert ftintitle.contains_feat("Alice (feat. Bob)")
-        assert ftintitle.contains_feat("Alice [ft. Bob]")
-        assert ftintitle.contains_feat("Alice [feat. Bob]")
-        assert not ftintitle.contains_feat("Alice defeat Bob")
-        assert not ftintitle.contains_feat("Aliceft.Bob")
-        assert not ftintitle.contains_feat("Alice (defeat Bob)")
-        assert not ftintitle.contains_feat("Live and Let Go")
-        assert not ftintitle.contains_feat("Come With Me")
+@pytest.mark.parametrize(
+    "given,expected",
+    [
+        ("Alice ft. Bob", ("Alice", "Bob")),
+        ("Alice feat Bob", ("Alice", "Bob")),
+        ("Alice feat. Bob", ("Alice", "Bob")),
+        ("Alice featuring Bob", ("Alice", "Bob")),
+        ("Alice & Bob", ("Alice", "Bob")),
+        ("Alice and Bob", ("Alice", "Bob")),
+        ("Alice With Bob", ("Alice", "Bob")),
+        ("Alice defeat Bob", ("Alice defeat Bob", None)),
+    ],
+)
+def test_split_on_feat(
+    given: str,
+    expected: Tuple[str, Optional[str]],
+) -> None:
+    assert ftintitle.split_on_feat(given) == expected
+
+
+@pytest.mark.parametrize(
+    "given,expected",
+    [
+        ("Alice ft. Bob", True),
+        ("Alice feat. Bob", True),
+        ("Alice feat Bob", True),
+        ("Alice featuring Bob", True),
+        ("Alice (ft. Bob)", True),
+        ("Alice (feat. Bob)", True),
+        ("Alice [ft. Bob]", True),
+        ("Alice [feat. Bob]", True),
+        ("Alice defeat Bob", False),
+        ("Aliceft.Bob", False),
+        ("Alice (defeat Bob)", False),
+        ("Live and Let Go", False),
+        ("Come With Me", False),
+    ],
+)
+def test_contains_feat(given: str, expected: bool) -> None:
+    assert ftintitle.contains_feat(given) is expected

test/plugins/test_lastgenre.py

@@ -14,7 +14,7 @@
 
 """Tests for the 'lastgenre' plugin."""
 
-from unittest.mock import Mock
+from unittest.mock import Mock, patch
 
 import pytest
 
@@ -131,6 +131,43 @@ class LastGenrePluginTest(BeetsTestCase):
             "math rock",
         ]
 
+    def test_pretend_option_skips_library_updates(self):
+        item = self.create_item(
+            album="Pretend Album",
+            albumartist="Pretend Artist",
+            artist="Pretend Artist",
+            title="Pretend Track",
+            genre="Original Genre",
+        )
+        album = self.lib.add_album([item])
+
+        command = self.plugin.commands()[0]
+        opts, args = command.parser.parse_args(["--pretend"])
+
+        with patch.object(lastgenre.ui, "should_write", return_value=True):
+            with patch.object(
+                self.plugin,
+                "_get_genre",
+                return_value=("Mock Genre", "mock stage"),
+            ) as mock_get_genre:
+                with patch.object(self.plugin._log, "info") as log_info:
+                    # Mock try_write to verify it's never called in pretend mode
+                    with patch.object(item, "try_write") as mock_try_write:
+                        command.func(self.lib, opts, args)
+
+        mock_get_genre.assert_called_once()
+
+        assert any(
+            call.args[1] == "Pretend: " for call in log_info.call_args_list
+        )
+
+        # Verify that try_write was never called (file operations skipped)
+        mock_try_write.assert_not_called()
+
+        stored_album = self.lib.get_album(album.id)
+        assert stored_album.genre == "Original Genre"
+        assert stored_album.items()[0].genre == "Original Genre"
+
     def test_no_duplicate(self):
         """Remove duplicated genres."""
         self._setup_config(count=99)

test/plugins/test_spotify.py

@@ -82,8 +82,8 @@ class SpotifyPluginTest(PluginTestCase):
         params = _params(responses.calls[0].request.url)
         query = params["q"][0]
         assert "duifhjslkef" in query
-        assert 'artist:"ujydfsuihse"' in query
-        assert 'album:"lkajsdflakjsd"' in query
+        assert "artist:'ujydfsuihse'" in query
+        assert "album:'lkajsdflakjsd'" in query
         assert params["type"] == ["track"]
 
     @responses.activate
@@ -117,8 +117,8 @@ class SpotifyPluginTest(PluginTestCase):
         params = _params(responses.calls[0].request.url)
         query = params["q"][0]
         assert "Happy" in query
-        assert 'artist:"Pharrell Williams"' in query
-        assert 'album:"Despicable Me 2"' in query
+        assert "artist:'Pharrell Williams'" in query
+        assert "album:'Despicable Me 2'" in query
         assert params["type"] == ["track"]
 
     @responses.activate
@@ -233,8 +233,8 @@ class SpotifyPluginTest(PluginTestCase):
             params = _params(responses.calls[0].request.url)
             query = params["q"][0]
             assert item.title in query
-            assert f'artist:"{item.albumartist}"' in query
-            assert f'album:"{item.album}"' in query
+            assert f"artist:'{item.albumartist}'" in query
+            assert f"album:'{item.album}'" in query
             assert not query.isascii()
 
         # Is not found in the library if ascii encoding is enabled

test/test_dbcore.py

@@ -23,6 +23,7 @@ from tempfile import mkstemp
 import pytest
 
 from beets import dbcore
+from beets.dbcore.db import DBCustomFunctionError
 from beets.library import LibModel
 from beets.test import _common
 from beets.util import cached_classproperty
@@ -31,6 +32,13 @@ from beets.util import cached_classproperty
 # have multiple models with different numbers of fields.
 
 
+@pytest.fixture
+def db(model):
+    db = model(":memory:")
+    yield db
+    db._connection().close()
+
+
 class SortFixture(dbcore.query.FieldSort):
     pass
 
@@ -81,7 +89,6 @@ class ModelFixture1(LibModel):
 
 class DatabaseFixture1(dbcore.Database):
     _models = (ModelFixture1,)
-    pass
 
 
 class ModelFixture2(ModelFixture1):
@@ -94,7 +101,6 @@ class ModelFixture2(ModelFixture1):
 
 class DatabaseFixture2(dbcore.Database):
     _models = (ModelFixture2,)
-    pass
 
 
 class ModelFixture3(ModelFixture1):
@@ -108,7 +114,6 @@ class ModelFixture3(ModelFixture1):
 
 class DatabaseFixture3(dbcore.Database):
     _models = (ModelFixture3,)
-    pass
 
 
 class ModelFixture4(ModelFixture1):
@@ -123,7 +128,6 @@ class ModelFixture4(ModelFixture1):
 
 class DatabaseFixture4(dbcore.Database):
     _models = (ModelFixture4,)
-    pass
 
 
 class AnotherModelFixture(ModelFixture1):
@@ -145,12 +149,10 @@ class ModelFixture5(ModelFixture1):
 
 class DatabaseFixture5(dbcore.Database):
     _models = (ModelFixture5,)
-    pass
 
 
 class DatabaseFixtureTwoModels(dbcore.Database):
     _models = (ModelFixture2, AnotherModelFixture)
-    pass
 
 
 class ModelFixtureWithGetters(dbcore.Model):
@@ -784,3 +786,25 @@ class ResultsIteratorTest(unittest.TestCase):
             self.db._fetch(ModelFixture1, dbcore.query.FalseQuery()).get()
             is None
         )
+
+
+class TestException:
+    @pytest.mark.parametrize("model", [DatabaseFixture1])
+    @pytest.mark.filterwarnings(
+        "ignore: .*plz_raise.*: pytest.PytestUnraisableExceptionWarning"
+    )
+    @pytest.mark.filterwarnings(
+        "error: .*: pytest.PytestUnraisableExceptionWarning"
+    )
+    def test_custom_function_error(self, db: DatabaseFixture1):
+        def plz_raise():
+            raise Exception("i haz raized")
+
+        db._connection().create_function("plz_raise", 0, plz_raise)
+
+        with db.transaction() as tx:
+            tx.mutate("insert into test (field_one) values (1)")
+
+        with pytest.raises(DBCustomFunctionError):
+            with db.transaction() as tx:
+                tx.query("select * from test where plz_raise()")

test/test_logging.py

@@ -3,18 +3,21 @@
 import logging as log
 import sys
 import threading
-import unittest
-from io import StringIO
+from types import ModuleType
+from unittest.mock import patch
+
+import pytest
 
 import beets.logging as blog
-import beetsplug
 from beets import plugins, ui
 from beets.test import _common, helper
 from beets.test.helper import AsIsImporterMixin, ImportTestCase, PluginMixin
 
 
-class LoggingTest(unittest.TestCase):
-    def test_logging_management(self):
+class TestStrFormatLogger:
+    """Tests for the custom str-formatting logger."""
+
+    def test_logger_creation(self):
         l1 = log.getLogger("foo123")
         l2 = blog.getLogger("foo123")
         assert l1 == l2
@@ -34,23 +37,37 @@ class LoggingTest(unittest.TestCase):
         l6 = blog.getLogger()
         assert l1 != l6
 
-    def test_str_format_logging(self):
-        logger = blog.getLogger("baz123")
-        stream = StringIO()
-        handler = log.StreamHandler(stream)
+    @pytest.mark.parametrize(
+        "level", [log.DEBUG, log.INFO, log.WARNING, log.ERROR]
+    )
+    @pytest.mark.parametrize(
+        "msg, args, kwargs, expected",
+        [
+            ("foo {} bar {}", ("oof", "baz"), {}, "foo oof bar baz"),
+            (
+                "foo {bar} baz {foo}",
+                (),
+                {"foo": "oof", "bar": "baz"},
+                "foo baz baz oof",
+            ),
+            ("no args", (), {}, "no args"),
+            ("foo {} bar {baz}", ("oof",), {"baz": "baz"}, "foo oof bar baz"),
+        ],
+    )
+    def test_str_format_logging(
+        self, level, msg, args, kwargs, expected, caplog
+    ):
+        logger = blog.getLogger("test_logger")
+        logger.setLevel(level)
 
-        logger.addHandler(handler)
-        logger.propagate = False
+        with caplog.at_level(level, logger="test_logger"):
+            logger.log(level, msg, *args, **kwargs)
 
-        logger.warning("foo {} {bar}", "oof", bar="baz")
-        handler.flush()
-        assert stream.getvalue(), "foo oof baz"
+        assert caplog.records, "No log records were captured"
+        assert str(caplog.records[0].msg) == expected
 
 
-class LoggingLevelTest(AsIsImporterMixin, PluginMixin, ImportTestCase):
-    plugin = "dummy"
-
-    class DummyModule:
+class DummyModule(ModuleType):
     class DummyPlugin(plugins.BeetsPlugin):
         def __init__(self):
             plugins.BeetsPlugin.__init__(self, "dummy")
@@ -73,10 +90,23 @@ class LoggingLevelTest(AsIsImporterMixin, PluginMixin, ImportTestCase):
         def listener(self):
             self.log_all("listener")
 
-    def setUp(self):
-        sys.modules["beetsplug.dummy"] = self.DummyModule
-        beetsplug.dummy = self.DummyModule
-        super().setUp()
+    def __init__(self, *_, **__):
+        module_name = "beetsplug.dummy"
+        super().__init__(module_name)
+        self.DummyPlugin.__module__ = module_name
+        self.DummyPlugin = self.DummyPlugin
+
+
+class LoggingLevelTest(AsIsImporterMixin, PluginMixin, ImportTestCase):
+    plugin = "dummy"
+
+    @classmethod
+    def setUpClass(cls):
+        patcher = patch.dict(sys.modules, {"beetsplug.dummy": DummyModule()})
+        patcher.start()
+        cls.addClassCleanup(patcher.stop)
+
+        super().setUpClass()
 
     def test_command_level0(self):
         self.config["verbose"] = 0