# usages:
#
# git-debrebase [<options>] new-upstream-v0 \
-# <new-version> <orig-commitish>
-# [<extra-orig-name> <extra-orig-commitish> ...]
+# <new-version> <orig-commitish> \
+# [<extra-orig-name> <extra-orig-commitish> ...] \
# [<git-rebase options>...]
#
# git-debrebase [<options> --] [<git-rebase options...>]
# git-debrebase [<options>] analyse
# git-debrebase [<options>] launder # prints breakwater tip etc.
# git-debrebase [<options>] downstream-rebase-launder-v0 # experimental
+#
+# git-debrebase [<options>] gbp2debrebase-v0 \
+# <upstream>
# problems / outstanding questions:
#