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Dan Winship authored
If you launched nmtui directly into the editor for a specific connection, it would hang with a blank screen when you quit. Fix this by changing the way startup works a bit, and have the created toplevel NmtNewtForm get returned all the way to nmtui.c, which can then connect to the "quit" signal on it and quit (rather than having the different subprograms trying to guess whether they're supposed to quit-on-exit or not).
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