USAGE='[-n | --no-summary] [--no-commit] [-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
. git-sh-setup
+set_reflog_action "pull $*"
+require_work_tree
+cd_to_toplevel
-strategy_args= no_summary= no_commit=
-while case "$#,$1" in 0) break ;; *,-*) ;; *) break ;; esac
+test -z "$(git ls-files -u)" ||
+ die "You are in the middle of a conflicted merge."
+
+strategy_args= no_summary= no_commit= squash=
+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=$1
+ ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_commit=--no-commit ;;
+ --sq|--squ|--squa|--squas|--squash)
+ squash=--squash ;;
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
--strateg=*|--strategy=*|\
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
case "$#,$1" in
*,*=*)
- strategy=`expr "$1" : '-[^=]*=\(.*\)'` ;;
+ strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;;
1,*)
usage ;;
*)
-h|--h|--he|--hel|--help)
usage
;;
- -*)
- # Pass thru anything that is meant for fetch.
+ *)
+ # Pass thru anything that may be meant for fetch.
break
;;
esac
shift
done
-orig_head=$(git-rev-parse --verify HEAD) || die "Pulling into a black hole?"
+orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
git-fetch --update-head-ok "$@" || exit 1
-curr_head=$(git-rev-parse --verify HEAD)
+curr_head=$(git rev-parse --verify HEAD 2>/dev/null)
if test "$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: $orig_head commit."
- git-update-index --refresh 2>/dev/null
- git-read-tree -u -m "$orig_head" "$curr_head" ||
+ echo >&2 "Warning: commit $orig_head."
+ git update-index --refresh 2>/dev/null
+ git read-tree -u -m "$orig_head" "$curr_head" ||
die 'Cannot fast-forward your working tree.
After making sure that you saved anything precious from
$ git diff '$orig_head'
case "$merge_head" in
'')
- echo >&2 "No changes."
- exit 0
+ curr_branch=$(git symbolic-ref -q HEAD)
+ case $? in
+ 0) ;;
+ 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 $?;;
+ esac
+ curr_branch=${curr_branch#refs/heads/}
+
+ echo >&2 "You asked me to pull without telling me which branch you"
+ echo >&2 "want to merge with, and 'branch.${curr_branch}.merge' in"
+ echo >&2 "your configuration file does not tell me either. Please"
+ echo >&2 "name which branch you want to merge on the command line and"
+ echo >&2 "try again (e.g. 'git pull <repository> <refspec>')."
+ echo >&2 "See git-pull(1) for details on the refspec."
+ echo >&2
+ echo >&2 "If you often merge with the same branch, you may want to"
+ echo >&2 "configure the following variables in your configuration"
+ echo >&2 "file:"
+ echo >&2
+ echo >&2 " branch.${curr_branch}.remote = <nickname>"
+ echo >&2 " branch.${curr_branch}.merge = <remote-ref>"
+ echo >&2 " remote.<nickname>.url = <url>"
+ echo >&2 " remote.<nickname>.fetch = <refspec>"
+ echo >&2
+ echo >&2 "See git-config(1) for details."
+ exit 1
;;
?*' '?*)
- var=`git-repo-config --get pull.octopus`
- if test -n "$var"
+ if test -z "$orig_head"
then
- strategy_default_args="-s $var"
- fi
- ;;
-*)
- var=`git-repo-config --get pull.twohead`
- if test -n "$var"
- then
- strategy_default_args="-s $var"
+ echo >&2 "Cannot merge multiple branches into empty head"
+ exit 1
fi
;;
esac
-case "$strategy_args" in
-'')
- strategy_args=$strategy_default_args
- ;;
-esac
+if test -z "$orig_head"
+then
+ git update-ref -m "initial pull" HEAD $merge_head "" &&
+ git read-tree --reset -u HEAD || exit 1
+ exit
+fi
-merge_name=$(git-fmt-merge-msg <"$GIT_DIR/FETCH_HEAD")
-git-merge $no_summary $no_commit $strategy_args "$merge_name" HEAD $merge_head
+merge_name=$(git fmt-merge-msg <"$GIT_DIR/FETCH_HEAD") || exit
+exec git-merge $no_summary $no_commit $squash $strategy_args \
+ "$merge_name" HEAD $merge_head