Ubuntu prepends "keys:" to messages which prompt the user with a list of possible keystrokes required to continue, so the graphical themes can display the message differently. The "keys:" tag itself is not intended to be displayed. I copied this behaviour from one of the Ubuntu themes.
If this behaviour is nonstandard, feel free to drop this part of the patch; Ubuntu can presumably re-add it locally.
Ubuntu prepends "keys:" to messages which prompt the user with a list of possible keystrokes required to continue, so the graphical themes can display the message differently. The "keys:" tag itself is not intended to be displayed. I copied this behaviour from one of the Ubuntu themes.
If this behaviour is nonstandard, feel free to drop this part of the patch; Ubuntu can presumably re-add it locally.