There are two breakages in the %P/%p interpolation. It appended
an excess SP at the end of the list, and it gave uninitialized
contents of a buffer on the stack for root commits.
This fixes it, while updating the t6006 test which expected the
wrong output.
Signed-off-by: Junio C Hamano <junkio@cox.net>
These could stand to be a little more complex, but it should
at least catch obvious problems (like the recently fixed %ct
bug).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
