#
# Fetch one or more remote refs and merge it/them into the current 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.'
+USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff|--ff-only] [--[no-]rebase|--rebase=preserve] [-s strategy]... [<fetch-options>] <repo> <head>...'
+LONG_USAGE='Fetch one or more remote refs and integrate it/them with the current HEAD.'
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
. git-sh-setup
test -z "$(git ls-files -u)" || die_conflict
test -f "$GIT_DIR/MERGE_HEAD" && die_merge
+bool_or_string_config () {
+ git config --bool "$1" 2>/dev/null || git config "$1"
+}
+
strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
-log_arg= verbosity= progress= recurse_submodules=
-merge_args= edit=
+log_arg= verbosity= progress= recurse_submodules= verify_signatures=
+merge_args= edit= rebase_args=
curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short="${curr_branch#refs/heads/}"
-rebase=$(git config --bool branch.$curr_branch_short.rebase)
+rebase=$(bool_or_string_config branch.$curr_branch_short.rebase)
if test -z "$rebase"
then
- rebase=$(git config --bool pull.rebase)
+ rebase=$(bool_or_string_config pull.rebase)
fi
+
+# Setup default fast-forward options via `pull.ff`
+pull_ff=$(git config pull.ff)
+case "$pull_ff" in
+false)
+ no_ff=--no-ff
+ ;;
+only)
+ ff_only=--ff-only
+ ;;
+esac
+
+
dry_run=
while :
do
esac
merge_args="$merge_args$xx "
;;
+ -r=*|--r=*|--re=*|--reb=*|--reba=*|--rebas=*|--rebase=*)
+ rebase="${1#*=}"
+ ;;
-r|--r|--re|--reb|--reba|--rebas|--rebase)
rebase=true
;;
--no-recurse-submodules)
recurse_submodules=--no-recurse-submodules
;;
+ --verify-signatures)
+ verify_signatures=--verify-signatures
+ ;;
+ --no-verify-signatures)
+ verify_signatures=--no-verify-signatures
+ ;;
+ --gpg-sign|-S)
+ gpg_sign_args=-S
+ ;;
+ --gpg-sign=*)
+ gpg_sign_args=$(git rev-parse --sq-quote "-S${1#--gpg-sign=}")
+ ;;
+ -S*)
+ gpg_sign_args=$(git rev-parse --sq-quote "$1")
+ ;;
--d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
dry_run=--dry-run
;;
shift
done
+case "$rebase" in
+preserve)
+ rebase=true
+ rebase_args=--preserve-merges
+ ;;
+true|false|'')
+ ;;
+*)
+ echo "Invalid value for --rebase, should be true, false, or preserve"
+ usage
+ exit 1
+ ;;
+esac
+
error_on_no_merge_candidates () {
exec >&2
for opt
do
case "$opt" in
-t|--t|--ta|--tag|--tags)
- echo "Fetching tags only, you probably meant:"
+ echo "It doesn't make sense to pull all tags; you probably meant:"
echo " git fetch --tags"
exit 1
esac
op_prep=with
fi
- curr_branch=${curr_branch#refs/heads/}
- upstream=$(git config "branch.$curr_branch.merge")
- remote=$(git config "branch.$curr_branch.remote")
+ upstream=$(git config "branch.$curr_branch_short.merge")
+ remote=$(git config "branch.$curr_branch_short.remote")
if [ $# -gt 1 ]; then
if [ "$rebase" = true ]; then
require_clean_work_tree "pull with rebase" "Please commit or stash them."
fi
oldremoteref= &&
+ test -n "$curr_branch" &&
. git-parse-remote &&
remoteref="$(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
+ oldremoteref=$(git merge-base --fork-point "$remoteref" $curr_branch 2>/dev/null)
}
orig_head=$(git rev-parse -q --verify HEAD)
git fetch $verbosity $progress $dry_run $recurse_submodules --update-head-ok "$@" || exit 1
;;
esac
+# Pulling into unborn branch: a shorthand for branching off
+# FETCH_HEAD, for lazy typers.
if test -z "$orig_head"
then
- git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
- git read-tree -m -u HEAD || exit 1
+ # Two-way merge: we claim the index is based on an empty tree,
+ # and try to fast-forward to HEAD. This ensures we will not
+ # lose index/worktree changes that the user already made on
+ # the unborn branch.
+ empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+ git read-tree -m -u $empty_tree $merge_head &&
+ git update-ref -m "initial pull" HEAD $merge_head "$curr_head"
exit
fi
merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
case "$rebase" in
true)
- eval="git-rebase $diffstat $strategy_args $merge_args"
+ eval="git-rebase $diffstat $strategy_args $merge_args $rebase_args $verbosity"
+ eval="$eval $gpg_sign_args"
eval="$eval --onto $merge_head ${oldremoteref:-$merge_head}"
;;
*)
- eval="git-merge $diffstat $no_commit $edit $squash $no_ff $ff_only"
- eval="$eval $log_arg $strategy_args $merge_args $verbosity $progress"
+ eval="git-merge $diffstat $no_commit $verify_signatures $edit $squash $no_ff $ff_only"
+ eval="$eval $log_arg $strategy_args $merge_args $verbosity $progress"
+ eval="$eval $gpg_sign_args"
eval="$eval \"\$merge_name\" HEAD $merge_head"
;;
esac
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