# Copyright (c) 2005 Junio C Hamano.
#
-. git-sh-setup || die "Not a git archive."
-
-usage="usage: $0 "'[-v] <upstream> [<head>]
-
- __*__*__*__*__> <upstream>
+USAGE='[-v] <upstream> [<head>] [<limit>]'
+LONG_USAGE=' __*__*__*__*__> <upstream>
/
fork-point
\__+__+__+__+__+__+__+__> <head>
-Each commit between the fork-point and <head> is examined, and
-compared against the change each commit between the fork-point and
-<upstream> introduces. If the change seems to be in the upstream,
-it is shown on the standard output with prefix "+". Otherwise
-it is shown with prefix "-".
-'
+Each commit between the fork-point (or <limit> if given) and <head> is
+examined, and compared against the change each commit between the
+fork-point and <upstream> introduces. If the change seems to be in
+the upstream, it is shown on the standard output with prefix "+".
+Otherwise it is shown with prefix "-".'
+. git-sh-setup
case "$1" in -v) verbose=t; shift ;; esac
case "$#" in
1) upstream=`git-rev-parse --verify "$1"` &&
ours=`git-rev-parse --verify HEAD` || exit
+ limit="$upstream"
;;
2) upstream=`git-rev-parse --verify "$1"` &&
ours=`git-rev-parse --verify "$2"` || exit
+ limit="$upstream"
+ ;;
+3) upstream=`git-rev-parse --verify "$1"` &&
+ ours=`git-rev-parse --verify "$2"` &&
+ limit=`git-rev-parse --verify "$3"` || exit
;;
-*) echo >&2 "$usage"; exit 1 ;;
+*) usage ;;
esac
# Note that these list commits in reverse order;
# not that the order in inup matters...
inup=`git-rev-list ^$ours $upstream` &&
-ours=`git-rev-list $ours ^$upstream` || exit
+ours=`git-rev-list $ours ^$limit` || exit
tmp=.cherry-tmp$$
patch=$tmp-patch