Add `--compat-option playlist-match-filter`

Closes #6073

README.md

@@ -157,14 +157,15 @@ Some of yt-dlp's default options are different from that of youtube-dl and youtu
 * `certifi` will be used for SSL root certificates, if installed. If you want to use system certificates (e.g. self-signed), use `--compat-options no-certifi`
 * yt-dlp's sanitization of invalid characters in filenames is different/smarter than in youtube-dl. You can use `--compat-options filename-sanitization` to revert to youtube-dl's behavior
 * yt-dlp tries to parse the external downloader outputs into the standard progress output if possible (Currently implemented: [~~aria2c~~](https://github.com/yt-dlp/yt-dlp/issues/5931)). You can use `--compat-options no-external-downloader-progress` to get the downloader output as-is
+* yt-dlp versions between 2021.09.01 and 2023.01.02 applies `--match-filter` to nested playlists. This was an unintentional side-effect of [8f18ac](https://github.com/yt-dlp/yt-dlp/commit/8f18aca8717bb0dd49054555af8d386e5eda3a88) and is fixed in [d7b460](https://github.com/yt-dlp/yt-dlp/commit/d7b460d0e5fc710950582baed2e3fc616ed98a80). Use `--compat-options playlist-match-filter` to revert this
 
 For ease of use, a few more compat options are available:
 
 * `--compat-options all`: Use all compat options (Do NOT use)
-* `--compat-options youtube-dl`: Same as `--compat-options all,-multistreams`
-* `--compat-options youtube-dlc`: Same as `--compat-options all,-no-live-chat,-no-youtube-channel-redirect`
+* `--compat-options youtube-dl`: Same as `--compat-options all,-multistreams,-playlist-match-filter`
+* `--compat-options youtube-dlc`: Same as `--compat-options all,-no-live-chat,-no-youtube-channel-redirect,-playlist-match-filter`
 * `--compat-options 2021`: Same as `--compat-options 2022,no-certifi,filename-sanitization,no-youtube-prefer-utc-upload-date`
-* `--compat-options 2022`: Same as `--compat-options no-external-downloader-progress`. Use this to enable all future compat options
+* `--compat-options 2022`: Same as `--compat-options playlist-match-filter,no-external-downloader-progress`. Use this to enable all future compat options
 
 
 # INSTALLATION

yt_dlp/YoutubeDL.py

@@ -1403,7 +1403,7 @@ class YoutubeDL:
 
     def _match_entry(self, info_dict, incomplete=False, silent=False):
         """Returns None if the file should be downloaded"""
-        _type = info_dict.get('_type', 'video')
+        _type = 'video' if 'playlist-match-filter' in self.params['compat_opts'] else info_dict.get('_type', 'video')
         assert incomplete or _type == 'video', 'Only video result can be considered complete'
 
         video_title = info_dict.get('title', info_dict.get('id', 'entry'))

yt_dlp/options.py

@@ -467,15 +467,15 @@ def create_parser():
         callback_kwargs={
             'allowed_values': {
                 'filename', 'filename-sanitization', 'format-sort', 'abort-on-error', 'format-spec', 'no-playlist-metafiles',
-                'multistreams', 'no-live-chat', 'playlist-index', 'list-formats', 'no-direct-merge',
+                'multistreams', 'no-live-chat', 'playlist-index', 'list-formats', 'no-direct-merge', 'playlist-match-filter',
                 'no-attach-info-json', 'embed-thumbnail-atomicparsley', 'no-external-downloader-progress',
                 'embed-metadata', 'seperate-video-versions', 'no-clean-infojson', 'no-keep-subs', 'no-certifi',
                 'no-youtube-channel-redirect', 'no-youtube-unavailable-videos', 'no-youtube-prefer-utc-upload-date',
             }, 'aliases': {
-                'youtube-dl': ['all', '-multistreams'],
-                'youtube-dlc': ['all', '-no-youtube-channel-redirect', '-no-live-chat'],
+                'youtube-dl': ['all', '-multistreams', '-playlist-match-filter'],
+                'youtube-dlc': ['all', '-no-youtube-channel-redirect', '-no-live-chat', '-playlist-match-filter'],
                 '2021': ['2022', 'no-certifi', 'filename-sanitization', 'no-youtube-prefer-utc-upload-date'],
-                '2022': ['no-external-downloader-progress'],
+                '2022': ['no-external-downloader-progress', 'playlist-match-filter'],
             }
         }, help=(
             'Options that can help keep compatibility with youtube-dl or youtube-dlc '