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copyq allows to prevent the storage of data based on the title on the originating window.
Open commands dialog with F6, click "Add" button, select 'Ignore "Password" window' and then change the "Window" text field in the new command to match a window title to ignore.
Keepass window has for title "[name of your database].kdbx - Keepass". We will then search for the pattern "ends with '- Keepass'" or ("- Keepass$" using regex notation).
in the Window section KeePass only is fine now. Copyq checks for the partial strings too. – tukan – 2018-08-17T09:28:24.770