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Fix --parse-metadata when TO is a single field name (#14577)

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Closes #14576
Authored by: clayote, bashonly

Co-authored-by: bashonly <88596187+bashonly@users.noreply.github.com>
This commit is contained in:
clayote
2026-01-05 16:19:30 +13:00
committed by GitHub
parent ba499ab0dc
commit cec1f1df79
3 changed files with 11 additions and 0 deletions
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3
README.md
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@@ -1821,6 +1821,9 @@ $ yt-dlp --parse-metadata "title:%(artist)s - %(title)s"
# Regex example # Regex example
$ yt-dlp --parse-metadata "description:Artist - (?P<artist>.+)" $ yt-dlp --parse-metadata "description:Artist - (?P<artist>.+)"
# Copy the episode field to the title field (with FROM and TO as single fields)
$ yt-dlp --parse-metadata "episode:title"
# Set title as "Series name S01E05" # Set title as "Series name S01E05"
$ yt-dlp --parse-metadata "%(series)s S%(season_number)02dE%(episode_number)02d:%(title)s" $ yt-dlp --parse-metadata "%(series)s S%(season_number)02dE%(episode_number)02d:%(title)s"

5
test/test_postprocessors.py
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@@ -29,6 +29,11 @@ class TestMetadataFromField(unittest.TestCase):
MetadataParserPP.format_to_regex('%(title)s - %(artist)s'), MetadataParserPP.format_to_regex('%(title)s - %(artist)s'),
r'(?P<title>.+)\ \-\ (?P<artist>.+)') r'(?P<title>.+)\ \-\ (?P<artist>.+)')
self.assertEqual(MetadataParserPP.format_to_regex(r'(?P<x>.+)'), r'(?P<x>.+)') self.assertEqual(MetadataParserPP.format_to_regex(r'(?P<x>.+)'), r'(?P<x>.+)')
self.assertEqual(MetadataParserPP.format_to_regex(r'text (?P<x>.+)'), r'text (?P<x>.+)')
self.assertEqual(MetadataParserPP.format_to_regex('x'), r'(?s)(?P<x>.+)')
self.assertEqual(MetadataParserPP.format_to_regex('Field_Name1'), r'(?s)(?P<Field_Name1>.+)')
self.assertEqual(MetadataParserPP.format_to_regex('é'), r'(?s)(?P<é>.+)')
self.assertEqual(MetadataParserPP.format_to_regex('invalid '), 'invalid ')
def test_field_to_template(self): def test_field_to_template(self):
self.assertEqual(MetadataParserPP.field_to_template('title'), '%(title)s') self.assertEqual(MetadataParserPP.field_to_template('title'), '%(title)s')

3
yt_dlp/postprocessor/metadataparser.py
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@@ -42,6 +42,9 @@ class MetadataParserPP(PostProcessor):
to a regex like to a regex like
'(?P<title>.+)\ \-\ (?P<artist>.+)' '(?P<title>.+)\ \-\ (?P<artist>.+)'
""" """
if re.fullmatch(r'\w+', fmt):
# convert a single field name into regex pattern that matches the entire input
return rf'(?s)(?P<{fmt}>.+)'
if not re.search(r'%\(\w+\)s', fmt): if not re.search(r'%\(\w+\)s', fmt):
return fmt return fmt
lastpos = 0 lastpos = 0