Filters can be added to control what feeds get sent to Discord via the command
filters. There are five categories for which filters can be applied to: title, description, summary, author and tag.
Categories are set by the feed author, and not by you. Setting a filter to a category that does not exist or is not identified by the
testcommand will cause all articles of the feed to fail the filter.
There are two types of filters: regular or regex. If regex filters are defined, regular filters will be ignored.
You can apply filters to non-standard raw properties. Use the
dumpcommand, find the relevant name, and use
raw:<name>as the filter category (replacing
<name>with the name in the dump output).