Exactly. Using 'Send selection to' can be used for this, I do this since years. Attached is a screenshot of my configured commands, the first both do exactly what you want. Easily accessable using Ctrl-1 and Ctrl-2.
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Not sure whether this really needs to be done by a plugin. E.g. you could use send selection to in combination with sort |-u]
example config
Exactly. Using 'Send selection to' can be used for this, I do this since years. Attached is a screenshot of my configured commands, the first both do exactly what you want. Easily accessable using Ctrl-1 and Ctrl-2.