test -z "$(git ls-files -u)" ||
die "You are in the middle of a conflicted merge."
-strategy_args= no_stat= no_commit= squash= no_ff= log_arg= verbosity=
+strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
+log_arg= verbosity=
curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
rebase=$(git config --bool branch.$curr_branch_short.rebase)
-v|--verbose)
verbosity="$verbosity -v" ;;
-n|--no-stat|--no-summary)
- no_stat=-n ;;
+ diffstat=--no-stat ;;
--stat|--summary)
- no_stat=$1 ;;
+ diffstat=--stat ;;
--log|--no-log)
log_arg=$1 ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_ff=--ff ;;
--no-ff)
no_ff=--no-ff ;;
+ --ff-only)
+ ff_only=--ff-only ;;
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
--strateg=*|--strategy=*|\
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
esac
done
- curr_branch=${curr_branch#refs/heads/}
+ if test true = "$rebase"
+ then
+ op_type=rebase
+ op_prep=against
+ else
+ op_type=merge
+ op_prep=with
+ fi
- if [ -z "$curr_branch" ]; then
+ curr_branch=${curr_branch#refs/heads/}
+ upstream=$(git config "branch.$curr_branch.merge")
+ remote=$(git config "branch.$curr_branch.remote")
+
+ if [ $# -gt 1 ]; then
+ if [ "$rebase" = true ]; then
+ printf "There is no candidate for rebasing against "
+ else
+ printf "There are no candidates for merging "
+ fi
+ echo "among the refs that you just fetched."
+ echo "Generally this means that you provided a wildcard refspec which had no"
+ echo "matches on the remote end."
+ elif [ $# -gt 0 ] && [ "$1" != "$remote" ]; then
+ echo "You asked to pull from the remote '$1', but did not specify"
+ echo "a branch. Because this is not the default configured remote"
+ echo "for your current branch, you must specify a branch on the command line."
+ elif [ -z "$curr_branch" ]; then
echo "You are not currently on a branch, so I cannot use any"
echo "'branch.<branchname>.merge' in your configuration file."
- echo "Please specify which branch you want to merge on the command"
+ echo "Please specify which remote branch you want to use on the command"
echo "line and try again (e.g. 'git pull <repository> <refspec>')."
echo "See git-pull(1) for details."
- else
+ elif [ -z "$upstream" ]; then
echo "You asked me to pull without telling me which branch you"
- echo "want to merge with, and 'branch.${curr_branch}.merge' in"
- echo "your configuration file does not tell me either. Please"
- echo "specify which branch you want to merge on the command line and"
+ echo "want to $op_type $op_prep, and 'branch.${curr_branch}.merge' in"
+ echo "your configuration file does not tell me, either. Please"
+ echo "specify which branch you want to use on the command line and"
echo "try again (e.g. 'git pull <repository> <refspec>')."
echo "See git-pull(1) for details."
echo
- echo "If you often merge with the same branch, you may want to"
- echo "configure the following variables in your configuration"
- echo "file:"
+ echo "If you often $op_type $op_prep the same branch, you may want to"
+ echo "use something like the following in your configuration file:"
+ echo
+ echo " [branch \"${curr_branch}\"]"
+ echo " remote = <nickname>"
+ echo " merge = <remote-ref>"
+ test rebase = "$op_type" &&
+ echo " rebase = true"
echo
- echo " branch.${curr_branch}.remote = <nickname>"
- echo " branch.${curr_branch}.merge = <remote-ref>"
- echo " remote.<nickname>.url = <url>"
- echo " remote.<nickname>.fetch = <refspec>"
+ echo " [remote \"<nickname>\"]"
+ echo " url = <url>"
+ echo " fetch = <refspec>"
echo
echo "See git-config(1) for details."
+ else
+ echo "Your configuration specifies to $op_type $op_prep the ref '${upstream#refs/heads/}'"
+ echo "from the remote, but no such ref was fetched."
fi
exit 1
}
test true = "$rebase" && {
- git update-index --ignore-submodules --refresh &&
- git diff-files --ignore-submodules --quiet &&
- git diff-index --ignore-submodules --cached --quiet HEAD -- ||
- die "refusing to pull with rebase: your working tree is not up-to-date"
-
+ if ! git rev-parse -q --verify HEAD >/dev/null
+ then
+ # On an unborn branch
+ if test -f "$GIT_DIR/index"
+ then
+ die "updating an unborn branch with changes added to the index"
+ fi
+ else
+ git update-index --ignore-submodules --refresh &&
+ git diff-files --ignore-submodules --quiet &&
+ git diff-index --ignore-submodules --cached --quiet HEAD -- ||
+ die "refusing to pull with rebase: your working tree is not up-to-date"
+ fi
+ oldremoteref= &&
. git-parse-remote &&
- origin="$1"
- test -z "$origin" && origin=$(get_default_remote)
- reflist="$(get_remote_refs_for_fetch "$@" 2>/dev/null |
- sed "s|refs/heads/\(.*\):|\1|")" &&
- oldremoteref="$(git rev-parse -q --verify \
- "refs/remotes/$origin/$reflist")"
+ remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
+ oldremoteref="$(git rev-parse -q --verify "$remoteref")" &&
+ for reflog in $(git rev-list -g $remoteref 2>/dev/null)
+ do
+ if test "$reflog" = "$(git merge-base $reflog $curr_branch)"
+ then
+ oldremoteref="$reflog"
+ break
+ fi
+ done
}
orig_head=$(git rev-parse -q --verify HEAD)
git fetch $verbosity --update-head-ok "$@" || exit 1
# 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 from"
+ echo >&2 "Warning: fast-forwarding your working tree from"
echo >&2 "Warning: commit $orig_head."
- git update-index --refresh 2>/dev/null
+ git update-index -q --refresh
git read-tree -u -m "$orig_head" "$curr_head" ||
die 'Cannot fast-forward your working tree.
After making sure that you saved anything precious from
case "$merge_head" in
'')
- case $? in
- 0) error_on_no_merge_candidates "$@";;
- 1) echo >&2 "You are not currently on a branch; you must explicitly"
- echo >&2 "specify which branch you wish to merge:"
- echo >&2 " git pull <remote> <branch>"
- exit 1;;
- *) exit $?;;
- esac
+ error_on_no_merge_candidates "$@"
;;
?*' '?*)
if test -z "$orig_head"
then
- echo >&2 "Cannot merge multiple branches into empty head"
- exit 1
+ die "Cannot merge multiple branches into empty head"
fi
if test true = "$rebase"
then
- echo >&2 "Cannot rebase onto multiple branches"
- exit 1
+ die "Cannot rebase onto multiple branches"
fi
;;
esac
merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
test true = "$rebase" &&
- exec git-rebase $strategy_args --onto $merge_head \
+ exec git-rebase $diffstat $strategy_args --onto $merge_head \
${oldremoteref:-$merge_head}
-exec git-merge $no_stat $no_commit $squash $no_ff $log_arg $strategy_args \
+exec git-merge $diffstat $no_commit $squash $no_ff $ff_only $log_arg $strategy_args \
"$merge_name" HEAD $merge_head $verbosity