I’m trying to use the Zero plugin to blank out all the genre tags in my library that are NOT set to “christmas”. In my configuration file I have enabled the plugin, put a configuration section for it in, and have this line:
genre: [^(?!christmas).*]
When I go to run beets again, just a query to start, it returns with the following error:
configuration error: /home/username/.config/beets/config.yaml could not be read: while parsing a flow sequence
in "/home/username/.config/beets/config.yaml", line 23, column 12
expected ',' or ']', but got '?'
Can I not use lookaround regex in beets?
Interestingly that is technically valid YAML, even though at a glance I’d have said it’s probably not right.
Could you try quoting the field like so and see if that fixes it?
genre: '[^(?!christmas).*]'
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https://yaml-online-parser.appspot.com/ seems to treat it as invalid (which uses pyyaml behind the scenes like beets), even though most other sites/parsers don’t have a problem with it. It seems like the issue it has is specifically with question marks: Allow question marks inside of plain scalars in flow collections · Issue #128 · yaml/pyyaml · GitHub
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Quoting it got rid of the error message, and after some testing the plugin is working as I expect now. Thank you @jackwilsdon