On-the-Fly and Placeholder Filters Fail When `keep_only` or `discard` Are Configured

[tillcash]

When the keep_only or discard options are set in the configuration, the On-the-Fly and Placeholder filters fail, resulting in no feeds being returned.

  - path: /otf
    on_the_fly_filters: true
    filters:
      - keep_only:
          field: title

Could you tell me where to modify the code so that the keep_only and discard filters are applied to the title by default? Many YouTube feeds have descriptions with keywords that I don't want to filter, which often leads to false positives. To overcome this, I primarily use these filters to target titles only, so I will compile the code myself after making the changes.

[shouya]

Could you tell me where to modify the code so that the keep_only and discard filters are applied to the title by default?

Sorry, but it's currently impossible use on_the_fly_filters keep_only filter and filter only by titles. This is because on_the_fly filters gets translated as normal filters with the most basic config, which defaults to match any fields.

Of course you can modify the code if you want. You can change it here:

https://github.com/shouya/rss-funnel/blob/29141c5c351f21031fb12c0b0704840076f6f3cd/src/filter/select.rs#L151C5-L151C14

Change Self::Any to Self::Title will do the trick.