diff options
Diffstat (limited to 'git-pull.sh')
| -rwxr-xr-x | git-pull.sh | 104 |
1 files changed, 77 insertions, 27 deletions
diff --git a/git-pull.sh b/git-pull.sh index 434c139f07..4d4fc77b05 100755 --- a/git-pull.sh +++ b/git-pull.sh @@ -4,8 +4,8 @@ # # 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 @@ -20,7 +20,7 @@ die_conflict () { 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, or use 'git commit -a'.")" +as appropriate to mark resolution and make a commit.")" else die "$(gettext "Pull is not possible because you have unmerged files.")" fi @@ -38,16 +38,33 @@ Please, commit your changes before you can merge.")" test -z "$(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 @@ -89,7 +106,7 @@ do -s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy) case "$#,$1" in *,*=*) - strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;; + strategy=$(expr "z$1" : 'z-[^=]*=\(.*\)') ;; 1,*) usage ;; *) @@ -110,6 +127,9 @@ do esac merge_args="$merge_args$xx " ;; + -r=*|--r=*|--re=*|--reb=*|--reba=*|--rebas=*|--rebase=*) + rebase="${1#*=}" + ;; -r|--r|--re|--reb|--reba|--rebas|--rebase) rebase=true ;; @@ -125,6 +145,21 @@ do --no-recurse-submodules) recurse_submodules=--no-recurse-submodules ;; + --verify-signatures) + verify_signatures=--verify-signatures + ;; + --no-verify-signatures) + verify_signatures=--no-verify-signatures + ;; + --gpg-sign|-S) + gpg_sign_args=-S + ;; + --gpg-sign=*) + gpg_sign_args=$(git rev-parse --sq-quote "-S${1#--gpg-sign=}") + ;; + -S*) + gpg_sign_args=$(git rev-parse --sq-quote "$1") + ;; --d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run) dry_run=--dry-run ;; @@ -139,13 +174,27 @@ do shift done +case "$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 "$opt" in -t|--t|--ta|--tag|--tags) - echo "Fetching tags only, you probably meant:" + echo "It doesn't make sense to pull all tags; you probably meant:" echo " git fetch --tags" exit 1 esac @@ -160,9 +209,8 @@ error_on_no_merge_candidates () { op_prep=with fi - curr_branch=${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 @@ -180,7 +228,7 @@ error_on_no_merge_candidates () { elif [ -z "$curr_branch" -o -z "$upstream" ]; then . git-parse-remote error_on_missing_default_upstream "pull" $op_type $op_prep \ - "git pull <repository> <refspec>" + "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." @@ -200,17 +248,10 @@ test true = "$rebase" && { require_clean_work_tree "pull with rebase" "Please commit or stash them." fi oldremoteref= && + test -n "$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 @@ -259,10 +300,17 @@ case "$merge_head" in ;; esac +# Pulling into unborn branch: a shorthand for branching off +# FETCH_HEAD, for lazy typers. if test -z "$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 @@ -278,12 +326,14 @@ 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 |