Fix the no_convert option of the convert plugin stopping conversion when there is only a partial match. (#5376)

I was running the `convert` plugin with the following config:

```
no_convert: samplerate:..48000 bitdepth:..16
```

but anything that was 24/48 was also not being converted, this was due
to the code returning `False` for `should_transcode` if any part of the
query matches, rather than considering the whole query. This meant that
`bitdepth:...16` was being ignored.

I have changed this so the `no_convert` value is considered as one
query.

beetsplug/convert.py

@@ -84,18 +84,20 @@ def get_format(fmt=None):
 
     return (command.encode("utf-8"), extension.encode("utf-8"))
 
+def in_no_convert(item: Item) -> bool:
+    no_convert_query = config["convert"]["no_convert"].as_str()
 
+    if no_convert_query:
+        query, _ = parse_query_string(no_convert_query, Item)
+        return query.match(item)
+    else:
+        return False
+    
 def should_transcode(item, fmt):
     """Determine whether the item should be transcoded as part of
     conversion (i.e., its bitrate is high or it has the wrong format).
     """
-    no_convert_queries = config["convert"]["no_convert"].as_str_seq()
-    if no_convert_queries:
-        for query_string in no_convert_queries:
-            query, _ = parse_query_string(query_string, Item)
-            if query.match(item):
-                return False
-    if (
+    if in_no_convert(item) or (
         config["convert"]["never_convert_lossy_files"]
         and item.format.lower() not in LOSSLESS_FORMATS
     ):

docs/changelog.rst

@@ -47,6 +47,10 @@ Bug fixes:
 * :doc:`plugins/lyrics`: Update ``tekstowo`` backend to fetch lyrics directly
   since recent updates to their website made it unsearchable.
   :bug:`5456`
+* :doc:`plugins/convert`: Fixed the convert plugin ``no_convert`` option so
+  that it no longer treats "and" and "or" queries the same. To maintain
+  previous behaviour add commas between your query keywords. For help see
+  :ref:`combiningqueries`.
 
 For packagers:
 

test/plugins/test_convert.py

@@ -18,10 +18,13 @@ import os.path
 import re
 import sys
 import unittest
+import pytest
 
 from mediafile import MediaFile
 
 from beets import util
+from beetsplug import convert
+from beets.library import Item
 from beets.test import _common
 from beets.test.helper import (
     AsIsImporterMixin,
@@ -335,3 +338,22 @@ class NeverConvertLossyFilesTest(ConvertTestCase, ConvertCommand):
             self.run_convert_path(item.path)
         converted = os.path.join(self.convert_dest, b"converted.ogg")
         self.assertNoFileTag(converted, "mp3")
+
+
+class TestNoConvert:
+    """Test the effect of the `no_convert` option."""
+
+    @pytest.mark.parametrize(
+        "config_value, should_skip",
+        [
+            ("", False),
+            ("bitrate:320", False),
+            ("bitrate:320 format:ogg", False),
+            ("bitrate:320 , format:ogg", True),
+        ],
+    )
+
+    def test_no_convert_skip(self, config_value, should_skip):
+        item = Item(format="ogg", bitrate=256)
+        convert.config["convert"]["no_convert"] = config_value
+        assert convert.in_no_convert(item) == should_skip