#
# Fetch one or more remote refs and merge it/them into the current HEAD.
-USAGE='[-n | --no-summary] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
+USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.'
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
test -z "$(git ls-files -u)" ||
die "You are in the middle of a conflicted merge."
-strategy_args= no_summary= no_commit= squash= no_ff=
+strategy_args= diffstat= no_commit= squash= no_ff= log_arg= verbosity=
curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
rebase=$(git config --bool branch.$curr_branch_short.rebase)
while :
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 ;;
- --summary)
- no_summary=$1
- ;;
+ -q|--quiet)
+ verbosity="$verbosity -q" ;;
+ -v|--verbose)
+ verbosity="$verbosity -v" ;;
+ -n|--no-stat|--no-summary)
+ diffstat=--no-stat ;;
+ --stat|--summary)
+ diffstat=--stat ;;
+ --log|--no-log)
+ log_arg=$1 ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_commit=--no-commit ;;
--c|--co|--com|--comm|--commi|--commit)
done
curr_branch=${curr_branch#refs/heads/}
+ upstream=$(git config "branch.$curr_branch.merge")
+ remote=$(git config "branch.$curr_branch.remote")
- echo "You asked me to pull without telling me which branch you"
- echo "want to merge with, and 'branch.${curr_branch}.merge' in"
- echo "your configuration file does not tell me either. Please"
- echo "name which branch you want to merge on the command line and"
- echo "try again (e.g. 'git pull <repository> <refspec>')."
- echo "See git-pull(1) for details on the refspec."
- echo
- echo "If you often merge with the same branch, you may want to"
- echo "configure the following variables in your configuration"
- echo "file:"
- echo
- echo " branch.${curr_branch}.remote = <nickname>"
- echo " branch.${curr_branch}.merge = <remote-ref>"
- echo " remote.<nickname>.url = <url>"
- echo " remote.<nickname>.fetch = <refspec>"
- echo
- echo "See git-config(1) for details."
+ if [ $# -gt 1 ]; then
+ echo "There are no candidates for merging in 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 '$1', but did not specify"
+ echo "a branch to merge. Because this is not the default configured remote"
+ echo "for your current branch, you must specify a branch on the command line."
+ elif [ -z "$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 "line and try again (e.g. 'git pull <repository> <refspec>')."
+ echo "See git-pull(1) for details."
+ 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 "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
+ echo " branch.${curr_branch}.remote = <nickname>"
+ echo " branch.${curr_branch}.merge = <remote-ref>"
+ echo " remote.<nickname>.url = <url>"
+ echo " remote.<nickname>.fetch = <refspec>"
+ echo
+ echo "See git-config(1) for details."
+ else
+ echo "Your configuration specifies to merge the ref '${upstream#refs/heads/}' from the"
+ echo "remote, but no such ref was fetched."
+ fi
exit 1
}
test true = "$rebase" && {
+ 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="$(git rev-parse --verify \
- "refs/remotes/$origin/$reflist" 2>/dev/null)"
+ remoteref="$(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=$(git rev-parse --verify HEAD 2>/dev/null)
-git-fetch --update-head-ok "$@" || exit 1
+orig_head=$(git rev-parse -q --verify HEAD)
+git fetch $verbosity --update-head-ok "$@" || exit 1
-curr_head=$(git rev-parse --verify HEAD 2>/dev/null)
-if test "$curr_head" != "$orig_head"
+curr_head=$(git rev-parse -q --verify HEAD)
+if test -n "$orig_head" && test "$curr_head" != "$orig_head"
then
# The fetch involved updating the current branch.
echo >&2 "Warning: fetch updated the current branch head."
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
+ die "Cannot rebase onto multiple branches"
fi
;;
esac
if test -z "$orig_head"
then
- git update-ref -m "initial pull" HEAD $merge_head "" &&
+ git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
git read-tree --reset -u HEAD || exit 1
exit
fi
-merge_name=$(git fmt-merge-msg <"$GIT_DIR/FETCH_HEAD") || exit
+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_summary $no_commit $squash $no_ff $strategy_args \
- "$merge_name" HEAD $merge_head
+exec git-merge $diffstat $no_commit $squash $no_ff $log_arg $strategy_args \
+ "$merge_name" HEAD $merge_head $verbosity