rebase -p: error out if --signoff is given

rebase --preserve-merges does not support --signoff so error out rather than just silently ignoring it so that the user knows the commits will not be signed off. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Phillip Wood committed Mar 20, 2018 at 11:10 UTC b79966aa386fc58801e93496cd4e97d82acd53a5
1 file changed +2
git-rebase.sh
+2
@@ -472,6 +472,8 @@ fi
472
473 if test -n "$signoff"
474 then
475 + test -n "$preserve_merges" &&
476 + die "$(gettext "error: cannot combine '--signoff' with '--preserve-merges'")"
477 git_am_opt="$git_am_opt $signoff"
478 force_rebase=t
479 fi