X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-rebase.sh;h=38cbee7dced95556141cc7f635979032ad7f52c9;hb=c7c2bc0ac9e7f077771db53960d4917fda4b27a7;hp=528b604cd57a774030c5f5830d3d78b5a04454cf;hpb=4d9e42f8f11c57b32b976a943c8ddaf6214e64b8;p=git.git diff --git a/git-rebase.sh b/git-rebase.sh index 528b604cd..38cbee7dc 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -3,7 +3,7 @@ # Copyright (c) 2005 Junio C Hamano. # -USAGE='[--interactive | -i] [-v] [--onto ] []' +USAGE='[--interactive | -i] [-v] [--force-rebase | -f] [--no-ff] [--onto ] [|--root] [] [--quiet | -q]' LONG_USAGE='git-rebase replaces with a new branch of the same name. When the --onto option is provided the new branch starts out with a HEAD equal to , otherwise it is equal to @@ -13,7 +13,7 @@ It then attempts to create a new commit for each commit from the original It is possible that a merge failure will prevent this process from being completely automatic. You will have to resolve any such merge failure and run git rebase --continue. Another option is to bypass the commit -that caused the merge failure with git rebase --skip. To restore the +that caused the merge failure with git rebase --skip. To check out the original and remove the .git/rebase-apply working files, use the command git rebase --abort instead. @@ -28,325 +28,420 @@ Example: git-rebase master~1 topic ' SUBDIRECTORY_OK=Yes -OPTIONS_SPEC= +OPTIONS_KEEPDASHDASH= +OPTIONS_SPEC="\ +git rebase [-i] [options] [--onto ] [] [] +git rebase [-i] [options] --onto --root [] +git-rebase [-i] --continue | --abort | --skip +-- + Available options are +v,verbose! display a diffstat of what changed upstream +q,quiet! be quiet. implies --no-stat +onto=! rebase onto given branch instead of upstream +p,preserve-merges! try to recreate merges instead of ignoring them +s,strategy=! use the given merge strategy +no-ff! cherry-pick all commits, even if unchanged +m,merge! use merging strategies to rebase +i,interactive! let the user edit the list of commits to rebase +f,force-rebase! force rebase even if branch is up to date +X,strategy-option=! pass the argument through to the merge strategy +stat! display a diffstat of what changed upstream +n,no-stat! do not show diffstat of what changed upstream +verify allow pre-rebase hook to run +rerere-autoupdate allow rerere to update index with resolved conflicts +root! rebase all reachable commits up to the root(s) +autosquash move commits that begin with squash!/fixup! under -i +committer-date-is-author-date! passed to 'git am' +ignore-date! passed to 'git am' +whitespace=! passed to 'git apply' +ignore-whitespace! passed to 'git apply' +C=! passed to 'git apply' + Actions: +continue! continue +abort! abort and check out the original branch +skip! skip current patch and continue +" . git-sh-setup set_reflog_action rebase require_work_tree cd_to_toplevel -RESOLVEMSG=" +LF=' +' +ok_to_skip_pre_rebase= +resolvemsg=" When you have resolved this problem run \"git rebase --continue\". If you would prefer to skip this patch, instead run \"git rebase --skip\". -To restore the original branch and stop rebasing run \"git rebase --abort\". +To check out the original branch and stop rebasing run \"git rebase --abort\". " -unset newbase -strategy=recursive +unset onto +strategy= +strategy_opts= do_merge= -dotest="$GIT_DIR"/rebase-merge -prec=4 +merge_dir="$GIT_DIR"/rebase-merge +apply_dir="$GIT_DIR"/rebase-apply verbose= +diffstat= +test "$(git config --bool rebase.stat)" = true && diffstat=t git_am_opt= - -continue_merge () { - test -n "$prev_head" || die "prev_head must be defined" - test -d "$dotest" || die "$dotest directory does not exist" - - unmerged=$(git ls-files -u) - if test -n "$unmerged" +rebase_root= +force_rebase= +allow_rerere_autoupdate= +# Non-empty if a rebase was in progress when 'git rebase' was invoked +in_progress= +# One of {am, merge, interactive} +type= +# One of {"$GIT_DIR"/rebase-apply, "$GIT_DIR"/rebase-merge} +state_dir= +# One of {'', continue, skip, abort}, as parsed from command line +action= +preserve_merges= +autosquash= +test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t + +read_basic_state () { + head_name=$(cat "$state_dir"/head-name) && + onto=$(cat "$state_dir"/onto) && + # We always write to orig-head, but interactive rebase used to write to + # head. Fall back to reading from head to cover for the case that the + # user upgraded git with an ongoing interactive rebase. + if test -f "$state_dir"/orig-head then - echo "You still have unmerged paths in your index" - echo "did you forget to use git add?" - die "$RESOLVEMSG" - fi - - cmt=`cat "$dotest/current"` - if ! git diff-index --quiet --ignore-submodules HEAD -- - then - if ! git commit --no-verify -C "$cmt" - then - echo "Commit failed, please do not call \"git commit\"" - echo "directly, but instead do one of the following: " - die "$RESOLVEMSG" - fi - printf "Committed: %0${prec}d " $msgnum + orig_head=$(cat "$state_dir"/orig-head) else - printf "Already applied: %0${prec}d " $msgnum - fi - git rev-list --pretty=oneline -1 "$cmt" | sed -e 's/^[^ ]* //' - - prev_head=`git rev-parse HEAD^0` - # save the resulting commit so we can read-tree on it later - echo "$prev_head" > "$dotest/prev_head" + orig_head=$(cat "$state_dir"/head) + fi && + GIT_QUIET=$(cat "$state_dir"/quiet) && + test -f "$state_dir"/verbose && verbose=t + test -f "$state_dir"/strategy && strategy="$(cat "$state_dir"/strategy)" + test -f "$state_dir"/strategy_opts && + strategy_opts="$(cat "$state_dir"/strategy_opts)" + test -f "$state_dir"/allow_rerere_autoupdate && + allow_rerere_autoupdate="$(cat "$state_dir"/allow_rerere_autoupdate)" +} - # onto the next patch: - msgnum=$(($msgnum + 1)) - echo "$msgnum" >"$dotest/msgnum" +write_basic_state () { + echo "$head_name" > "$state_dir"/head-name && + echo "$onto" > "$state_dir"/onto && + echo "$orig_head" > "$state_dir"/orig-head && + echo "$GIT_QUIET" > "$state_dir"/quiet && + test t = "$verbose" && : > "$state_dir"/verbose + test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy + test -n "$strategy_opts" && echo "$strategy_opts" > \ + "$state_dir"/strategy_opts + test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \ + "$state_dir"/allow_rerere_autoupdate } -call_merge () { - cmt="$(cat "$dotest/cmt.$1")" - echo "$cmt" > "$dotest/current" - hd=$(git rev-parse --verify HEAD) - cmt_name=$(git symbolic-ref HEAD 2> /dev/null || echo HEAD) - msgnum=$(cat "$dotest/msgnum") - end=$(cat "$dotest/end") - eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"' - eval GITHEAD_$hd='$(cat "$dotest/onto_name")' - export GITHEAD_$cmt GITHEAD_$hd - git-merge-$strategy "$cmt^" -- "$hd" "$cmt" - rv=$? - case "$rv" in - 0) - unset GITHEAD_$cmt GITHEAD_$hd - return - ;; - 1) - git rerere - die "$RESOLVEMSG" - ;; - 2) - echo "Strategy: $rv $strategy failed, try another" 1>&2 - die "$RESOLVEMSG" +output () { + case "$verbose" in + '') + output=$("$@" 2>&1 ) + status=$? + test $status != 0 && printf "%s\n" "$output" + return $status ;; *) - die "Unknown exit code ($rv) from command:" \ - "git-merge-$strategy $cmt^ -- HEAD $cmt" + "$@" ;; esac } move_to_original_branch () { - test -z "$head_name" && - head_name="$(cat "$dotest"/head-name)" && - onto="$(cat "$dotest"/onto)" && - orig_head="$(cat "$dotest"/orig-head)" case "$head_name" in refs/*) message="rebase finished: $head_name onto $onto" git update-ref -m "$message" \ $head_name $(git rev-parse HEAD) $orig_head && - git symbolic-ref HEAD $head_name || + git symbolic-ref \ + -m "rebase finished: returning to $head_name" \ + HEAD $head_name || die "Could not move back to $head_name" ;; esac } -finish_rb_merge () { - move_to_original_branch - rm -r "$dotest" - echo "All done." +run_specific_rebase () { + if [ "$interactive_rebase" = implied ]; then + GIT_EDITOR=: + export GIT_EDITOR + fi + . git-rebase--$type } -is_interactive () { - test -f "$dotest"/interactive || - while :; do case $#,"$1" in 0,|*,-i|*,--interactive) break ;; esac - shift - done && test -n "$1" +run_pre_rebase_hook () { + if test -z "$ok_to_skip_pre_rebase" && + test -x "$GIT_DIR/hooks/pre-rebase" + then + "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || + die "The pre-rebase hook refused to rebase." + fi } -test -f "$GIT_DIR"/rebase-apply/applying && +test -f "$apply_dir"/applying && die 'It looks like git-am is in progress. Cannot rebase.' -is_interactive "$@" && exec git-rebase--interactive "$@" - -if test $# -eq 0 +if test -d "$apply_dir" +then + type=am + state_dir="$apply_dir" +elif test -d "$merge_dir" then - test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply || usage - test -d "$dotest" -o -f "$GIT_DIR"/rebase-apply/rebasing && - die 'A rebase is in progress, try --continue, --skip or --abort.' - die "No arguments given and $GIT_DIR/rebase-apply already exists." + if test -f "$merge_dir"/interactive + then + type=interactive + interactive_rebase=explicit + else + type=merge + fi + state_dir="$merge_dir" fi +test -n "$type" && in_progress=t +total_argc=$# while test $# != 0 do case "$1" in - --continue) - test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply || - die "No rebase in progress?" - - git diff-files --quiet --ignore-submodules || { - echo "You must edit all merge conflicts and then" - echo "mark them as resolved using git add" - exit 1 - } - if test -d "$dotest" - then - prev_head=$(cat "$dotest/prev_head") - end=$(cat "$dotest/end") - msgnum=$(cat "$dotest/msgnum") - onto=$(cat "$dotest/onto") - continue_merge - while test "$msgnum" -le "$end" - do - call_merge "$msgnum" - continue_merge - done - finish_rb_merge - exit - fi - head_name=$(cat "$GIT_DIR"/rebase-apply/head-name) && - onto=$(cat "$GIT_DIR"/rebase-apply/onto) && - orig_head=$(cat "$GIT_DIR"/rebase-apply/orig-head) && - git am --resolved --3way --resolvemsg="$RESOLVEMSG" && - move_to_original_branch - exit + --no-verify) + ok_to_skip_pre_rebase=yes ;; - --skip) - test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply || - die "No rebase in progress?" - - git reset --hard HEAD || exit $? - if test -d "$dotest" - then - git rerere clear - prev_head=$(cat "$dotest/prev_head") - end=$(cat "$dotest/end") - msgnum=$(cat "$dotest/msgnum") - msgnum=$(($msgnum + 1)) - onto=$(cat "$dotest/onto") - while test "$msgnum" -le "$end" - do - call_merge "$msgnum" - continue_merge - done - finish_rb_merge - exit - fi - head_name=$(cat "$GIT_DIR"/rebase-apply/head-name) && - onto=$(cat "$GIT_DIR"/rebase-apply/onto) && - orig_head=$(cat "$GIT_DIR"/rebase-apply/orig-head) && - git am -3 --skip --resolvemsg="$RESOLVEMSG" && - move_to_original_branch - exit + --verify) + ok_to_skip_pre_rebase= ;; - --abort) - test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply || - die "No rebase in progress?" - - git rerere clear - if test -d "$dotest" - then - move_to_original_branch - else - dotest="$GIT_DIR"/rebase-apply - move_to_original_branch - fi - git reset --hard $(cat "$dotest/orig-head") - rm -r "$dotest" - exit + --continue|--skip|--abort) + test $total_argc -eq 2 || usage + action=${1##--} ;; --onto) test 2 -le "$#" || usage - newbase="$2" + onto="$2" shift ;; - -M|-m|--m|--me|--mer|--merg|--merge) + -i) + interactive_rebase=explicit + ;; + -p) + preserve_merges=t + test -z "$interactive_rebase" && interactive_rebase=implied + ;; + --autosquash) + autosquash=t + ;; + --no-autosquash) + autosquash= + ;; + -M|-m) do_merge=t ;; - -s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\ - --strateg=*|--strategy=*|\ - -s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy) - case "$#,$1" in - *,*=*) - strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;; - 1,*) - usage ;; - *) - strategy="$2" - shift ;; - esac + -X) + shift + strategy_opts="$strategy_opts $(git rev-parse --sq-quote "--$1")" do_merge=t + test -z "$strategy" && strategy=recursive ;; - -v|--verbose) + -s) + shift + strategy="$1" + do_merge=t + ;; + -n) + diffstat= + ;; + --stat) + diffstat=t + ;; + -v) verbose=t + diffstat=t + GIT_QUIET= + ;; + -q) + GIT_QUIET=t + git_am_opt="$git_am_opt -q" + verbose= + diffstat= ;; - --whitespace=*) + --whitespace) + shift + git_am_opt="$git_am_opt --whitespace=$1" + case "$1" in + fix|strip) + force_rebase=t + ;; + esac + ;; + --ignore-whitespace) git_am_opt="$git_am_opt $1" ;; - -C*) + --committer-date-is-author-date|--ignore-date) git_am_opt="$git_am_opt $1" + force_rebase=t ;; - -*) - usage + -C) + shift + git_am_opt="$git_am_opt -C$1" ;; - *) + --root) + rebase_root=t + ;; + -f|--no-ff) + force_rebase=t + ;; + --rerere-autoupdate|--no-rerere-autoupdate) + allow_rerere_autoupdate="$1" + ;; + --) + shift break ;; esac shift done +test $# -gt 2 && usage -# Make sure we do not have $GIT_DIR/rebase-apply -if test -z "$do_merge" +if test -n "$action" then - if mkdir "$GIT_DIR"/rebase-apply 2>/dev/null - then - rmdir "$GIT_DIR"/rebase-apply - else - echo >&2 ' -It seems that I cannot create a rebase-apply directory, and -I wonder if you are in the middle of patch application or another -rebase. If that is not the case, please - rm -fr '"$GIT_DIR"'/rebase-apply -and run me again. I am stopping in case you still have something -valuable there.' - exit 1 - fi -else - if test -d "$dotest" + test -z "$in_progress" && die "No rebase in progress?" + # Only interactive rebase uses detailed reflog messages + if test "$type" = interactive && test "$GIT_REFLOG_ACTION" = rebase then - die "previous rebase directory $dotest still exists." \ - 'Try git rebase (--continue | --abort | --skip)' + GIT_REFLOG_ACTION="rebase -i ($action)" + export GIT_REFLOG_ACTION fi fi -# The tree must be really really clean. -git update-index --ignore-submodules --refresh || exit -diff=$(git diff-index --cached --name-status -r --ignore-submodules HEAD --) -case "$diff" in -?*) echo "cannot rebase: your index is not up-to-date" - echo "$diff" - exit 1 +case "$action" in +continue) + # Sanity check + git rev-parse --verify HEAD >/dev/null || + die "Cannot read HEAD" + git update-index --ignore-submodules --refresh && + git diff-files --quiet --ignore-submodules || { + echo "You must edit all merge conflicts and then" + echo "mark them as resolved using git add" + exit 1 + } + read_basic_state + run_specific_rebase + ;; +skip) + output git reset --hard HEAD || exit $? + read_basic_state + run_specific_rebase + ;; +abort) + git rerere clear + read_basic_state + case "$head_name" in + refs/*) + git symbolic-ref -m "rebase: aborting" HEAD $head_name || + die "Could not move back to $head_name" + ;; + esac + output git reset --hard $orig_head + rm -r "$state_dir" + exit ;; esac -# The upstream head must be given. Make sure it is valid. -upstream_name="$1" -upstream=`git rev-parse --verify "${upstream_name}^0"` || - die "invalid upstream $upstream_name" +# Make sure no rebase is in progress +if test -n "$in_progress" +then + die ' +It seems that there is already a '"${state_dir##*/}"' directory, and +I wonder if you are in the middle of another rebase. If that is the +case, please try + git rebase (--continue | --abort | --skip) +If that is not the case, please + rm -fr '"$state_dir"' +and run me again. I am stopping in case you still have something +valuable there.' +fi -# Make sure the branch to rebase onto is valid. -onto_name=${newbase-"$upstream_name"} -onto=$(git rev-parse --verify "${onto_name}^0") || exit +if test -n "$interactive_rebase" +then + type=interactive + state_dir="$merge_dir" +elif test -n "$do_merge" +then + type=merge + state_dir="$merge_dir" +else + type=am + state_dir="$apply_dir" +fi -# If a hook exists, give it a chance to interrupt -if test -x "$GIT_DIR/hooks/pre-rebase" +if test -z "$rebase_root" then - "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || { - echo >&2 "The pre-rebase hook refused to rebase." - exit 1 - } + case "$#" in + 0) + if ! upstream_name=$(git rev-parse --symbolic-full-name \ + --verify -q @{upstream} 2>/dev/null) + then + . git-parse-remote + error_on_missing_default_upstream "rebase" "rebase" \ + "against" "git rebase " + fi + ;; + *) upstream_name="$1" + shift + ;; + esac + upstream=`git rev-parse --verify "${upstream_name}^0"` || + die "invalid upstream $upstream_name" + upstream_arg="$upstream_name" +else + test -z "$onto" && die "You must specify --onto when using --root" + unset upstream_name + unset upstream + upstream_arg=--root fi +# Make sure the branch to rebase onto is valid. +onto_name=${onto-"$upstream_name"} +case "$onto_name" in +*...*) + if left=${onto_name%...*} right=${onto_name#*...} && + onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD}) + then + case "$onto" in + ?*"$LF"?*) + die "$onto_name: there are more than one merge bases" + ;; + '') + die "$onto_name: there is no merge base" + ;; + esac + else + die "$onto_name: there is no merge base" + fi + ;; +*) + onto=$(git rev-parse --verify "${onto_name}^0") || + die "Does not point to a valid commit: $1" + ;; +esac + # If the branch to rebase is given, that is the branch we will rebase # $branch_name -- branch being rebased, or HEAD (already detached) # $orig_head -- commit object name of tip of the branch before rebasing # $head_name -- refs/heads/ or "detached HEAD" switch_to= case "$#" in -2) +1) # Is it "rebase other $branchname" or "rebase other $commit"? - branch_name="$2" - switch_to="$2" + branch_name="$1" + switch_to="$1" - if git show-ref --verify --quiet -- "refs/heads/$2" && - branch=$(git rev-parse --verify "refs/heads/$2" 2>/dev/null) + if git show-ref --verify --quiet -- "refs/heads/$1" && + orig_head=$(git rev-parse -q --verify "refs/heads/$1") then - head_name="refs/heads/$2" - elif branch=$(git rev-parse --verify "$2" 2>/dev/null) + head_name="refs/heads/$1" + elif orig_head=$(git rev-parse -q --verify "$1") then head_name="detached HEAD" else + echo >&2 "fatal: no such branch: $1" usage fi ;; @@ -360,89 +455,69 @@ case "$#" in head_name="detached HEAD" branch_name=HEAD ;# detached fi - branch=$(git rev-parse --verify "${branch_name}^0") || exit + orig_head=$(git rev-parse --verify "${branch_name}^0") || exit ;; esac -orig_head=$branch -# Now we are rebasing commits $upstream..$branch on top of $onto +require_clean_work_tree "rebase" "Please commit or stash them." + +# Now we are rebasing commits $upstream..$orig_head (or with --root, +# everything leading up to $orig_head) on top of $onto # Check if we are already based on $onto with linear history, -# but this should be done only when upstream and onto are the same. -mb=$(git merge-base "$onto" "$branch") -if test "$upstream" = "$onto" && test "$mb" = "$onto" && +# but this should be done only when upstream and onto are the same +# and if this is not an interactive rebase. +mb=$(git merge-base "$onto" "$orig_head") +if test "$type" != interactive && test "$upstream" = "$onto" && + test "$mb" = "$onto" && # linear history? - ! (git rev-list --parents "$onto".."$branch" | grep " .* ") > /dev/null + ! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null then - # Lazily switch to the target branch if needed... - test -z "$switch_to" || git checkout "$switch_to" - echo >&2 "Current branch $branch_name is up to date." - exit 0 + if test -z "$force_rebase" + then + # Lazily switch to the target branch if needed... + test -z "$switch_to" || git checkout "$switch_to" -- + say "Current branch $branch_name is up to date." + exit 0 + else + say "Current branch $branch_name is up to date, rebase forced." + fi fi -if test -n "$verbose" +# If a hook exists, give it a chance to interrupt +run_pre_rebase_hook "$upstream_arg" "$@" + +if test -n "$diffstat" then - echo "Changes from $mb to $onto:" + if test -n "$verbose" + then + echo "Changes from $mb to $onto:" + fi # We want color (if set), but no pager GIT_PAGER='' git diff --stat --summary "$mb" "$onto" fi +test "$type" = interactive && run_specific_rebase + # Detach HEAD and reset the tree -echo "First, rewinding head to replay your work on top of it..." +say "First, rewinding head to replay your work on top of it..." git checkout -q "$onto^0" || die "could not detach HEAD" -git update-ref ORIG_HEAD $branch +git update-ref ORIG_HEAD $orig_head # If the $onto is a proper descendant of the tip of the branch, then -# we just fast forwarded. -if test "$mb" = "$branch" +# we just fast-forwarded. +if test "$mb" = "$orig_head" then - echo >&2 "Fast-forwarded $branch_name to $onto_name." + say "Fast-forwarded $branch_name to $onto_name." move_to_original_branch exit 0 fi -if test -z "$do_merge" +if test -n "$rebase_root" then - git format-patch -k --stdout --full-index --ignore-if-in-upstream \ - "$upstream..$orig_head" | - git am $git_am_opt --rebasing --resolvemsg="$RESOLVEMSG" && - move_to_original_branch - ret=$? - test 0 != $ret -a -d "$GIT_DIR"/rebase-apply && - echo $head_name > "$GIT_DIR"/rebase-apply/head-name && - echo $onto > "$GIT_DIR"/rebase-apply/onto && - echo $orig_head > "$GIT_DIR"/rebase-apply/orig-head - exit $ret + revisions="$onto..$orig_head" +else + revisions="$upstream..$orig_head" fi -# start doing a rebase with git-merge -# this is rename-aware if the recursive (default) strategy is used - -mkdir -p "$dotest" -echo "$onto" > "$dotest/onto" -echo "$onto_name" > "$dotest/onto_name" -prev_head=$orig_head -echo "$prev_head" > "$dotest/prev_head" -echo "$orig_head" > "$dotest/orig-head" -echo "$head_name" > "$dotest/head-name" - -msgnum=0 -for cmt in `git rev-list --reverse --no-merges "$upstream..$orig_head"` -do - msgnum=$(($msgnum + 1)) - echo "$cmt" > "$dotest/cmt.$msgnum" -done - -echo 1 >"$dotest/msgnum" -echo $msgnum >"$dotest/end" - -end=$msgnum -msgnum=1 - -while test "$msgnum" -le "$end" -do - call_merge "$msgnum" - continue_merge -done - -finish_rb_merge +run_specific_rebase