The concept: quickly create a filter from selected text in an article, within a dialog, not entering preferences.
The basic options: when you select some words and click on Quick filter, you get only the Add action dialog from the filter configuration. That is, select action dropdown, action parameters, save and cancel. No more filter stuff: no match (it's the selected text), no multiple matches, no multiple actions, no label, no checkboxes. Select text, choose one action and go, that's the feature I'd like to have.
The not so basic options: there could be a previous option: New/Existing filter. One way to show it could be a dropdown whose first element is "New filter" and the other elements are the filters that already exist. If you choose New filter, you get the basic options. If you choose an existing filter, you get no options: the selected words are simply added as a new match to the filter you chose.
Where the Quick Filter button is: this is the most complicated part, I think. Possibilities are: a) Context menu: selected text within an article has no context menu right now, so it could be put there. However, overriding the browser's context options as copy, search, doesn't sound too good to me. b) Action dropdown. c) Selection dropdown. d) New toolbar button. e) Article header or footer. These four possibilities add the button in places that are already a bit crowded, so that might not be great either. My choice would be the Actions dropdown.
This is the idea I propose, either in tt-rss or as a plugin. Filtering is the reason I use tt-rss in the first place, since it has the best filtering of online readers. Filters allows me to go past the main problem with RSS: that neither I nor most people want to see everything from most sources. Making filters more accessible would make the reader simpler and nicer to use.
Bears welcome.
Maybe as a plugin.
