--- /dev/null
- ${upload_pack+"$upload_pack"} $force $tags $prune $keep $depth $unshallow $update_shallow \
+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+# Fetch one or more remote refs and merge it/them into the current HEAD.
+
+SUBDIRECTORY_OK=Yes
+OPTIONS_KEEPDASHDASH=
+OPTIONS_STUCKLONG=Yes
+OPTIONS_SPEC="\
+git pull [options] [<repository> [<refspec>...]]
+
+Fetch one or more remote refs and integrate it/them with the current HEAD.
+--
+v,verbose be more verbose
+q,quiet be more quiet
+progress force progress reporting
+
+ Options related to merging
+r,rebase?false|true|preserve incorporate changes by rebasing rather than merging
+n! do not show a diffstat at the end of the merge
+stat show a diffstat at the end of the merge
+summary (synonym to --stat)
+log?n add (at most <n>) entries from shortlog to merge commit message
+squash create a single commit instead of doing a merge
+commit perform a commit if the merge succeeds (default)
+e,edit edit message before committing
+ff allow fast-forward
+ff-only! abort if fast-forward is not possible
+verify-signatures verify that the named commit has a valid GPG signature
+s,strategy=strategy merge strategy to use
+X,strategy-option=option option for selected merge strategy
+S,gpg-sign?key-id GPG sign commit
+
+ Options related to fetching
+all fetch from all remotes
+a,append append to .git/FETCH_HEAD instead of overwriting
+upload-pack=path path to upload pack on remote end
+f,force force overwrite of local branch
+t,tags fetch all tags and associated objects
+p,prune prune remote-tracking branches no longer on remote
+recurse-submodules?on-demand control recursive fetching of submodules
+dry-run dry run
+k,keep keep downloaded pack
+depth=depth deepen history of shallow clone
+unshallow convert to a complete repository
+update-shallow accept refs that update .git/shallow
+refmap=refmap specify fetch refmap
+"
+test $# -gt 0 && args="$*"
+. git-sh-setup
+. git-sh-i18n
+set_reflog_action "pull${args+ $args}"
+require_work_tree_exists
+cd_to_toplevel
+
+
+die_conflict () {
+ git diff-index --cached --name-status -r --ignore-submodules HEAD --
+ if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
+ die "$(gettext "Pull is not possible because you have unmerged files.
+Please, fix them up in the work tree, and then use 'git add/rm <file>'
+as appropriate to mark resolution and make a commit.")"
+ else
+ die "$(gettext "Pull is not possible because you have unmerged files.")"
+ fi
+}
+
+die_merge () {
+ if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
+ die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).
+Please, commit your changes before you can merge.")"
+ else
+ die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).")"
+ fi
+}
+
+test -z "$(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 "$1"
+}
+
+strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
+log_arg= verbosity= progress= recurse_submodules= verify_signatures=
+merge_args= edit= rebase_args= all= append= upload_pack= force= tags= prune=
+keep= depth= unshallow= update_shallow= refmap=
+curr_branch=$(git symbolic-ref -q HEAD)
+curr_branch_short="${curr_branch#refs/heads/}"
+rebase=$(bool_or_string_config branch.$curr_branch_short.rebase)
+if test -z "$rebase"
+then
+ rebase=$(bool_or_string_config pull.rebase)
+fi
+
+# Setup default fast-forward options via `pull.ff`
+pull_ff=$(bool_or_string_config pull.ff)
+case "$pull_ff" in
+true)
+ no_ff=--ff
+ ;;
+false)
+ no_ff=--no-ff
+ ;;
+only)
+ ff_only=--ff-only
+ ;;
+esac
+
+
+dry_run=
+while :
+do
+ case "$1" in
+ -q|--quiet)
+ verbosity="$verbosity -q" ;;
+ -v|--verbose)
+ verbosity="$verbosity -v" ;;
+ --progress)
+ progress=--progress ;;
+ --no-progress)
+ progress=--no-progress ;;
+ -n|--no-stat|--no-summary)
+ diffstat=--no-stat ;;
+ --stat|--summary)
+ diffstat=--stat ;;
+ --log|--log=*|--no-log)
+ log_arg="$1" ;;
+ --no-commit)
+ no_commit=--no-commit ;;
+ --commit)
+ no_commit=--commit ;;
+ -e|--edit)
+ edit=--edit ;;
+ --no-edit)
+ edit=--no-edit ;;
+ --squash)
+ squash=--squash ;;
+ --no-squash)
+ squash=--no-squash ;;
+ --ff)
+ no_ff=--ff ;;
+ --no-ff)
+ no_ff=--no-ff ;;
+ --ff-only)
+ ff_only=--ff-only ;;
+ -s*|--strategy=*)
+ strategy_args="$strategy_args $1"
+ ;;
+ -X*|--strategy-option=*)
+ merge_args="$merge_args $(git rev-parse --sq-quote "$1")"
+ ;;
+ -r*|--rebase=*)
+ rebase="${1#*=}"
+ ;;
+ --rebase)
+ rebase=true
+ ;;
+ --no-rebase)
+ rebase=false
+ ;;
+ --recurse-submodules)
+ recurse_submodules=--recurse-submodules
+ ;;
+ --recurse-submodules=*)
+ recurse_submodules="$1"
+ ;;
+ --no-recurse-submodules)
+ recurse_submodules=--no-recurse-submodules
+ ;;
+ --verify-signatures)
+ verify_signatures=--verify-signatures
+ ;;
+ --no-verify-signatures)
+ verify_signatures=--no-verify-signatures
+ ;;
+ --gpg-sign|-S)
+ gpg_sign_args=-S
+ ;;
+ --gpg-sign=*)
+ gpg_sign_args=$(git rev-parse --sq-quote "-S${1#--gpg-sign=}")
+ ;;
+ -S*)
+ gpg_sign_args=$(git rev-parse --sq-quote "$1")
+ ;;
+ --dry-run)
+ dry_run=--dry-run
+ ;;
+ --all|--no-all)
+ all=$1 ;;
+ -a|--append|--no-append)
+ append=$1 ;;
+ --upload-pack=*|--no-upload-pack)
+ upload_pack=$1 ;;
+ -f|--force|--no-force)
+ force="$force $1" ;;
+ -t|--tags|--no-tags)
+ tags=$1 ;;
+ -p|--prune|--no-prune)
+ prune=$1 ;;
+ -k|--keep|--no-keep)
+ keep=$1 ;;
+ --depth=*|--no-depth)
+ depth=$1 ;;
+ --unshallow|--no-unshallow)
+ unshallow=$1 ;;
+ --update-shallow|--no-update-shallow)
+ update_shallow=$1 ;;
+ --refmap=*|--no-refmap)
+ refmap=$1 ;;
+ -h|--help-all)
+ usage
+ ;;
+ --)
+ shift
+ break
+ ;;
+ *)
+ usage
+ ;;
+ esac
+ shift
+done
+
+case "$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
+
+ if test true = "$rebase"
+ then
+ op_type=rebase
+ op_prep=against
+ else
+ op_type=merge
+ op_prep=with
+ fi
+
+ upstream=$(git config "branch.$curr_branch_short.merge")
+ remote=$(git config "branch.$curr_branch_short.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" -o -z "$upstream" ]; then
+ . git-parse-remote
+ error_on_missing_default_upstream "pull" $op_type $op_prep \
+ "git pull <remote> <branch>"
+ 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 = "$rebase" && {
+ if ! git rev-parse -q --verify HEAD >/dev/null
+ then
+ # On an unborn branch
+ if test -f "$(git rev-parse --git-path index)"
+ then
+ die "$(gettext "updating an unborn branch with changes added to the index")"
+ fi
+ else
+ require_clean_work_tree "pull with rebase" "Please commit or stash them."
+ fi
+ oldremoteref= &&
+ test -n "$curr_branch" &&
+ . git-parse-remote &&
+ remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
+ oldremoteref=$(git merge-base --fork-point "$remoteref" $curr_branch 2>/dev/null)
+}
+orig_head=$(git rev-parse -q --verify HEAD)
+git fetch $verbosity $progress $dry_run $recurse_submodules $all $append \
++${upload_pack:+"$upload_pack"} $force $tags $prune $keep $depth $unshallow $update_shallow \
+$refmap --update-head-ok "$@" || exit 1
+test -z "$dry_run" || exit 0
+
+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.
+
+ # 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 $curr_head.
+
+ eval_gettextln "Warning: fetch updated the current branch head.
+Warning: fast-forwarding your working tree from
+Warning: commit \$orig_head." >&2
+ git update-index -q --refresh
+ git read-tree -u -m "$orig_head" "$curr_head" ||
+ die "$(eval_gettext "Cannot fast-forward your working tree.
+After making sure that you saved anything precious from
+$ git diff \$orig_head
+output, run
+$ git reset --hard
+to recover.")"
+
+fi
+
+merge_head=$(sed -e '/ not-for-merge /d' \
+ -e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
+ tr '\012' ' ')
+
+case "$merge_head" in
+'')
+ error_on_no_merge_candidates "$@"
+ ;;
+?*' '?*)
+ if test -z "$orig_head"
+ then
+ die "$(gettext "Cannot merge multiple branches into empty head")"
+ fi
+ if test true = "$rebase"
+ then
+ die "$(gettext "Cannot rebase onto multiple branches")"
+ fi
+ ;;
+esac
+
+# Pulling into unborn branch: a shorthand for branching off
+# FETCH_HEAD, for lazy typers.
+if test -z "$orig_head"
+then
+ # 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
+
+if test true = "$rebase"
+then
+ o=$(git show-branch --merge-base $curr_branch $merge_head $oldremoteref)
+ if test "$oldremoteref" = "$o"
+ then
+ unset oldremoteref
+ fi
+fi
+
+case "$rebase" in
+true)
+ 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 $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 FETCH_HEAD"
+ ;;
+esac
+eval "exec $eval"