You can use one or several keywords as a search query. If a keyword starts with "-", it is considered a negative match.
Several special keywords are available:
- @{date} - match by date. For example, @yesterday or @2011-11-03. Please note that due to incomplete implementation, special date keywords like yesterday might not match all articles if the user timezone is different from Feeds Reader internal timezone (UTC).
- pub:{true,false} - match only published or unpublished articles
- star:{true, false} - same, starred articles
- unread:{true, false} - self explanatory (requires trunk as of 05.03.2015)
- note:{true, false, sometext} - same, for articles having an attached note or matching the specified text
- title:, author: - self-explanatory
Pointless as it may be, you can combine the negative prefix with the special keywords: -star:true would essentially mean star:false.