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Currently, when user click on search result, krunner closes one's window. What if I need to select other search result or working with many search result (for example calculating two formulas)?

Solution is to convert search result onto windowed plasmoid, so I don't need retype search criteria. It could be useful to dock this plasmoid on desktop/panel.

Another option would be to have a way to either multi-select search results, or keep the search results open when selecting items (e.g. using ctrl+click or shift+enter or some such)