Emmanuele Bassi@forteller this is really application territory, because only an application knows about its contents; so it's either a feature of the toolkit, or implemented straight into the app. It could be implemented, say, by the GTK text widgets, but then everybody else has to do the same, and everyone has to decide to use the same key shortcut. Introducing new shortcuts onto unsuspecting apps may end up colliding with existing shortcuts, as well.
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