On Tue, 6 Oct 2015, Michael Howe wrote: > It would be nice if the manpage made it clear that -D was only available > if compiled with the debug option. It would also be good if ksu could > throw the 'invalid option' message and not list -D if it hasn't been > compiled with debugging enabled.
Upstream has removed -D from the man page and the usage string for 1.14alpha1, which is not yet in Debian. Leaving the bug open until that changes... -Ben