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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
# Fetch one or more remote refs and merge it/them into the current HEAD.
. git-sh-setup || die "Not a git archive"
usage () {
die "git pull [-n] [--no-commit] [-s strategy]... <repo> <head>..."
}
strategy_args= no_summary= no_commit=
while case "$#,$1" in 0) break ;; *,-*) ;; *) break ;; esac
do
case "$1" in
-n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
--no-summa|--no-summar|--no-summary)
no_summary=-n ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_commit=--no-commit ;;
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
--strateg=*|--strategy=*|\
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
case "$#,$1" in
*,*=*)
strategy=`expr "$1" : '-[^=]*=\(.*\)'` ;;
1,*)
usage ;;
*)
strategy="$2"
shift ;;
esac
strategy_args="${strategy_args}-s $strategy "
;;
-*)
# Pass thru anything that is meant for fetch.
break
;;
esac
shift
done
orig_head=$(git-rev-parse --verify HEAD) || die "Pulling into a black hole?"
git-fetch --update-head-ok "$@" || exit 1
curr_head=$(git-rev-parse --verify HEAD)
if test "$curr_head" != "$orig_head"
then
# The fetch involved updating the current branch.
# The working tree and the index file is still based on the
# $orig_head commit, but we are merging into $curr_head.
# First update the working tree to match $curr_head.
echo >&2 "Warning: fetch updated the current branch head."
echo >&2 "Warning: fast forwarding your working tree."
git-read-tree -u -m "$orig_head" "$curr_head" ||
die "You need to first update your working tree."
fi
merge_head=$(sed -e '/ not-for-merge /d' \
-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
tr '\012' ' ')
case "$merge_head" in
'')
echo >&2 "No changes."
exit 0
;;
?*' '?*)
strategy_default_args='-s octopus'
;;
*)
strategy_default_args='-s resolve'
;;
esac
case "$strategy_args" in
'')
strategy_args=$strategy_default_args
;;
esac
merge_name=$(git-fmt-merge-msg <"$GIT_DIR/FETCH_HEAD")
git-merge $no_summary $no_commit $strategy_args "$merge_name" HEAD $merge_head
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