git/git-cherry.sh
Mark Wooding f327dbced2 Shell utilities: Guard against expr' magic tokens.
Some words, e.g., `match', are special to expr(1), and cause strange
parsing effects.  Track down all uses of expr and mangle the arguments
so that this isn't a problem.

Signed-off-by: Mark Wooding <mdw@distorted.org.uk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-13 16:45:48 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano.
#
USAGE='[-v] <upstream> [<head>] [<limit>]'
LONG_USAGE=' __*__*__*__*__> <upstream>
/
fork-point
\__+__+__+__+__+__+__+__> <head>
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 "$1" in -v) verbose=t; shift ;; esac
case "$#,$1" in
1,*..*)
upstream=$(expr "z$1" : 'z\(.*\)\.\.') ours=$(expr "z$1" : '.*\.\.\(.*\)$')
set x "$upstream" "$ours"
shift ;;
esac
case "$#" 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 "$3"` || exit
;;
*) usage ;;
esac
# Note that these list commits in reverse order;
# not that the order in inup matters...
inup=`git-rev-list ^$ours $upstream` &&
ours=`git-rev-list $ours ^$limit` || exit
tmp=.cherry-tmp$$
patch=$tmp-patch
mkdir $patch
trap "rm -rf $tmp-*" 0 1 2 3 15
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
for c in $inup
do
git-diff-tree -p $c
done | git-patch-id |
while read id name
do
echo $name >>$patch/$id
done
LF='
'
O=
for c in $ours
do
set x `git-diff-tree -p $c | git-patch-id`
if test "$2" != ""
then
if test -f "$patch/$2"
then
sign=-
else
sign=+
fi
case "$verbose" in
t)
c=$(git-rev-list --pretty=oneline --max-count=1 $c)
esac
case "$O" in
'') O="$sign $c" ;;
*) O="$sign $c$LF$O" ;;
esac
fi
done
case "$O" in
'') ;;
*) echo "$O" ;;
esac