Add regex operator and quoting to format filters (#2698)

Closes #2681 
Authored by: lukasfink1 

1 files changed, 9 insertions, 3 deletions

diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 74684dea3..9892ed328 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -1842,15 +1842,21 @@ class YoutubeDL(object):
                 '^=': lambda attr, value: attr.startswith(value),
                 '$=': lambda attr, value: attr.endswith(value),
                 '*=': lambda attr, value: value in attr,
+                '~=': lambda attr, value: value.search(attr) is not None
             }
             str_operator_rex = re.compile(r'''(?x)\s*
                 (?P<key>[a-zA-Z0-9._-]+)\s*
-                (?P<negation>!\s*)?(?P<op>%s)(?P<none_inclusive>\s*\?)?\s*
-                (?P<value>[a-zA-Z0-9._-]+)\s*
+                (?P<negation>!\s*)?(?P<op>%s)\s*(?P<none_inclusive>\?\s*)?
+                (?P<quote>["'])?
+                (?P<value>(?(quote)(?:(?!(?P=quote))[^\\]|\\.)+|[\w.-]+))
+                (?(quote)(?P=quote))\s*
                 ''' % '|'.join(map(re.escape, STR_OPERATORS.keys())))
             m = str_operator_rex.fullmatch(filter_spec)
             if m:
-                comparison_value = m.group('value')
+                if m.group('op') == '~=':
+                    comparison_value = re.compile(m.group('value'))
+                else:
+                    comparison_value = re.sub(r'''\\([\\"'])''', r'\1', m.group('value'))
                 str_op = STR_OPERATORS[m.group('op')]
                 if m.group('negation'):
                     op = lambda attr, value: not str_op(attr, value)