diff options
Diffstat (limited to 'git-rebase--interactive.sh')
| -rwxr-xr-x | git-rebase--interactive.sh | 224 |
1 files changed, 168 insertions, 56 deletions
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 3e4fd1456f..5873ba4bc3 100755 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -20,6 +20,7 @@ v,verbose display a diffstat of what changed upstream 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 always used (no-op) i,interactive always used (no-op) Actions: @@ -27,6 +28,7 @@ continue continue rebasing process abort abort rebasing process and restore original branch skip skip current patch and continue rebasing process no-verify override pre-rebase hook from stopping the operation +verify allow pre-rebase hook to run root rebase all reachable commmits up to the root(s) autosquash move commits that begin with squash!/fixup! under -i " @@ -96,6 +98,13 @@ AUTHOR_SCRIPT="$DOTEST"/author-script # command is processed, this file is deleted. AMEND="$DOTEST"/amend +# For the post-rewrite hook, we make a list of rewritten commits and +# their new sha1s. The rewritten-pending list keeps the sha1s of +# commits that have been processed, but not committed yet, +# e.g. because they are waiting for a 'squash' command. +REWRITTEN_LIST="$DOTEST"/rewritten-list +REWRITTEN_PENDING="$DOTEST"/rewritten-pending + PRESERVE_MERGES= STRATEGY= ONTO= @@ -103,14 +112,16 @@ VERBOSE= OK_TO_SKIP_PRE_REBASE= REBASE_ROOT= AUTOSQUASH= +test "$(git config --bool rebase.autosquash)" = "true" && AUTOSQUASH=t +NEVER_FF= -GIT_CHERRY_PICK_HELP=" After resolving the conflicts, -mark the corrected paths with 'git add <paths>', and -run 'git rebase --continue'" +GIT_CHERRY_PICK_HELP="\ +hint: after resolving the conflicts, mark the corrected paths +hint: with 'git add <paths>' and run 'git rebase --continue'" export GIT_CHERRY_PICK_HELP warn () { - echo "$*" >&2 + printf '%s\n' "$*" >&2 } output () { @@ -143,14 +154,6 @@ run_pre_rebase_hook () { fi } -require_clean_work_tree () { - # test if working tree is dirty - git rev-parse --verify HEAD > /dev/null && - git update-index --ignore-submodules --refresh && - git diff-files --quiet --ignore-submodules && - git diff-index --cached --quiet HEAD --ignore-submodules -- || - die "Working tree is dirty" -} ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION" @@ -198,6 +201,7 @@ make_patch () { } die_with_patch () { + echo "$1" > "$DOTEST"/stopped-sha make_patch "$1" git rerere die "$2" @@ -222,8 +226,9 @@ do_with_author () { } pick_one () { - no_ff= - case "$1" in -n) sha1=$2; no_ff=t ;; *) sha1=$1 ;; esac + ff=--ff + case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac + case "$NEVER_FF" in '') ;; ?*) ff= ;; esac output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1" test -d "$REWRITTEN" && pick_one_preserving_merges "$@" && return @@ -232,16 +237,7 @@ pick_one () { output git cherry-pick "$@" return fi - parent_sha1=$(git rev-parse --verify $sha1^) || - die "Could not get the parent of $sha1" - current_sha1=$(git rev-parse --verify HEAD) - if test -z "$no_ff" && test "$current_sha1" = "$parent_sha1" - then - output git reset --hard $sha1 - output warn Fast-forward to $(git rev-parse --short $sha1) - else - output git cherry-pick "$@" - fi + output git cherry-pick $ff "$@" } pick_one_preserving_merges () { @@ -261,10 +257,10 @@ pick_one_preserving_merges () { then if test "$fast_forward" = t then - cat "$DOTEST"/current-commit | while read current_commit + while read current_commit do git rev-parse HEAD > "$REWRITTEN"/$current_commit - done + done <"$DOTEST"/current-commit rm "$DOTEST"/current-commit || die "Cannot write current commit's replacement sha1" fi @@ -348,6 +344,7 @@ pick_one_preserving_merges () { printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG die_with_patch $sha1 "Error redoing merge $sha1" fi + echo "$sha1 $(git rev-parse HEAD^0)" >> "$REWRITTEN_LIST" ;; *) output git cherry-pick "$@" || @@ -425,9 +422,29 @@ die_failed_squash() { die_with_patch $1 "" } +flush_rewritten_pending() { + test -s "$REWRITTEN_PENDING" || return + newsha1="$(git rev-parse HEAD^0)" + sed "s/$/ $newsha1/" < "$REWRITTEN_PENDING" >> "$REWRITTEN_LIST" + rm -f "$REWRITTEN_PENDING" +} + +record_in_rewritten() { + oldsha1="$(git rev-parse $1)" + echo "$oldsha1" >> "$REWRITTEN_PENDING" + + case "$(peek_next_command)" in + squash|s|fixup|f) + ;; + *) + flush_rewritten_pending + ;; + esac +} + do_next () { rm -f "$MSG" "$AUTHOR_SCRIPT" "$AMEND" || exit - read command sha1 rest < "$TODO" + read -r command sha1 rest < "$TODO" case "$command" in '#'*|''|noop) mark_action_done @@ -438,6 +455,7 @@ do_next () { mark_action_done pick_one $sha1 || die_with_patch $sha1 "Could not apply $sha1... $rest" + record_in_rewritten $sha1 ;; reword|r) comment_for_reflog reword @@ -445,7 +463,8 @@ do_next () { mark_action_done pick_one $sha1 || die_with_patch $sha1 "Could not apply $sha1... $rest" - git commit --amend + git commit --amend --no-post-rewrite + record_in_rewritten $sha1 ;; edit|e) comment_for_reflog edit @@ -453,6 +472,7 @@ do_next () { mark_action_done pick_one $sha1 || die_with_patch $sha1 "Could not apply $sha1... $rest" + echo "$sha1" > "$DOTEST"/stopped-sha make_patch $sha1 git rev-parse --verify HEAD > "$AMEND" warn "Stopped at $sha1... $rest" @@ -509,6 +529,35 @@ do_next () { rm -f "$SQUASH_MSG" "$FIXUP_MSG" ;; esac + record_in_rewritten $sha1 + ;; + x|"exec") + read -r command rest < "$TODO" + mark_action_done + printf 'Executing: %s\n' "$rest" + # "exec" command doesn't take a sha1 in the todo-list. + # => can't just use $sha1 here. + git rev-parse --verify HEAD > "$DOTEST"/stopped-sha + ${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution + status=$? + if test "$status" -ne 0 + then + warn "Execution failed: $rest" + warn "You can fix the problem, and then run" + warn + warn " git rebase --continue" + warn + exit "$status" + fi + # Run in subshell because require_clean_work_tree can die. + if ! (require_clean_work_tree "rebase") + then + warn "Commit or stash your changes, and then run" + warn + warn " git rebase --continue" + warn + exit 1 + fi ;; *) warn "Unknown command: $command $sha1 $rest" @@ -537,6 +586,16 @@ do_next () { test ! -f "$DOTEST"/verbose || git diff-tree --stat $(cat "$DOTEST"/head)..HEAD } && + { + test -s "$REWRITTEN_LIST" && + git notes copy --for-rewrite=rebase < "$REWRITTEN_LIST" || + true # we don't care if this copying failed + } && + if test -x "$GIT_DIR"/hooks/post-rewrite && + test -s "$REWRITTEN_LIST"; then + "$GIT_DIR"/hooks/post-rewrite rebase < "$REWRITTEN_LIST" + true # we don't care if this hook failed + fi && rm -rf "$DOTEST" && git gc --auto && warn "Successfully rebased and updated $HEADNAME." @@ -554,24 +613,37 @@ do_rest () { # skip picking commits whose parents are unchanged skip_unnecessary_picks () { fd=3 - while read command sha1 rest + while read -r command rest do # fd=3 means we skip the command - case "$fd,$command,$(git rev-parse --verify --quiet $sha1^)" in - 3,pick,"$ONTO"*|3,p,"$ONTO"*) + case "$fd,$command" in + 3,pick|3,p) # pick a commit whose parent is current $ONTO -> skip - ONTO=$sha1 + sha1=${rest%% *} + case "$(git rev-parse --verify --quiet "$sha1"^)" in + "$ONTO"*) + ONTO=$sha1 + ;; + *) + fd=1 + ;; + esac ;; - 3,#*|3,,*) + 3,#*|3,) # copy comments ;; *) fd=1 ;; esac - echo "$command${sha1:+ }$sha1${rest:+ }$rest" >&$fd + printf '%s\n' "$command${rest:+ }$rest" >&$fd done <"$TODO" >"$TODO.new" 3>>"$DONE" && - mv -f "$TODO".new "$TODO" || + mv -f "$TODO".new "$TODO" && + case "$(peek_next_command)" in + squash|s|fixup|f) + record_in_rewritten "$ONTO" + ;; + esac || die "Could not skip unnecessary pick commands" } @@ -596,26 +668,56 @@ get_saved_options () { # comes immediately after the former, and change "pick" to # "fixup"/"squash". rearrange_squash () { - sed -n -e 's/^pick \([0-9a-f]*\) \(squash\)! /\1 \2 /p' \ - -e 's/^pick \([0-9a-f]*\) \(fixup\)! /\1 \2 /p' \ - "$1" >"$1.sq" + # extract fixup!/squash! lines and resolve any referenced sha1's + while read -r pick sha1 message + do + case "$message" in + "squash! "*|"fixup! "*) + action="${message%%!*}" + rest="${message#*! }" + echo "$sha1 $action $rest" + # if it's a single word, try to resolve to a full sha1 and + # emit a second copy. This allows us to match on both message + # and on sha1 prefix + if test "${rest#* }" = "$rest"; then + fullsha="$(git rev-parse -q --verify "$rest" 2>/dev/null)" + if test -n "$fullsha"; then + # prefix the action to uniquely identify this line as + # intended for full sha1 match + echo "$sha1 +$action $fullsha" + fi + fi + esac + done >"$1.sq" <"$1" test -s "$1.sq" || return used= - while read pick sha1 message + while read -r pick sha1 message do case " $used" in *" $sha1 "*) continue ;; esac - echo "$pick $sha1 $message" - while read squash action msg + printf '%s\n' "$pick $sha1 $message" + used="$used$sha1 " + while read -r squash action msg do - case "$message" in - "$msg"*) - echo "$action $squash $action! $msg" - used="$used$squash " - ;; + case " $used" in + *" $squash "*) continue ;; esac + emit=0 + case "$action" in + +*) + action="${action#+}" + # full sha1 prefix test + case "$msg" in "$sha1"*) emit=1;; esac ;; + *) + # message prefix test + case "$message" in "$msg"*) emit=1;; esac ;; + esac + if test $emit = 1; then + printf '%s\n' "$action $squash $action! $msg" + used="$used$squash " + fi done <"$1.sq" done >"$1.rearranged" <"$1" cat "$1.rearranged" >"$1" @@ -648,6 +750,7 @@ do OK_TO_SKIP_PRE_REBASE=yes ;; --verify) + OK_TO_SKIP_PRE_REBASE= ;; --continue) is_standalone "$@" || usage @@ -687,7 +790,9 @@ first and then run 'git rebase --continue' again." } fi - require_clean_work_tree + record_in_rewritten "$(cat "$DOTEST"/stopped-sha)" + + require_clean_work_tree "rebase" do_rest ;; --abort) @@ -742,12 +847,18 @@ first and then run 'git rebase --continue' again." -i) # yeah, we know ;; + --no-ff) + NEVER_FF=t + ;; --root) REBASE_ROOT=t ;; --autosquash) AUTOSQUASH=t ;; + --no-autosquash) + AUTOSQUASH= + ;; --onto) shift ONTO=$(parse_onto "$1") || @@ -779,13 +890,11 @@ first and then run 'git rebase --continue' again." comment_for_reflog start - require_clean_work_tree + require_clean_work_tree "rebase" "Please commit or stash them." if test ! -z "$1" then - output git show-ref --verify --quiet "refs/heads/$1" || - die "Invalid branchname: $1" - output git checkout "$1" || + output git checkout "$1" -- || die "Could not checkout $1" fi @@ -845,11 +954,12 @@ first and then run 'git rebase --continue' again." git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \ --abbrev=7 --reverse --left-right --topo-order \ $REVISIONS | \ - sed -n "s/^>//p" | while read shortsha1 rest + sed -n "s/^>//p" | + while read -r shortsha1 rest do if test t != "$PRESERVE_MERGES" then - echo "pick $shortsha1 $rest" >> "$TODO" + printf '%s\n' "pick $shortsha1 $rest" >> "$TODO" else sha1=$(git rev-parse $shortsha1) if test -z "$REBASE_ROOT" @@ -868,7 +978,7 @@ first and then run 'git rebase --continue' again." if test f = "$preserve" then touch "$REWRITTEN"/$sha1 - echo "pick $shortsha1 $rest" >> "$TODO" + printf '%s\n' "pick $shortsha1 $rest" >> "$TODO" fi fi done @@ -911,6 +1021,7 @@ first and then run 'git rebase --continue' again." # e, edit = use commit, but stop for amending # s, squash = use commit, but meld into previous commit # f, fixup = like "squash", but discard this commit's log message +# x, exec = run command (the rest of the line) using shell # # If you remove a line here THAT COMMIT WILL BE LOST. # However, if you remove everything, the rebase will be aborted. @@ -927,10 +1038,11 @@ EOF has_action "$TODO" || die_abort "Nothing to do" - test -d "$REWRITTEN" || skip_unnecessary_picks + test -d "$REWRITTEN" || test -n "$NEVER_FF" || skip_unnecessary_picks + output git checkout $ONTO || die_abort "could not detach HEAD" git update-ref ORIG_HEAD $HEAD - output git checkout $ONTO && do_rest + do_rest ;; esac shift |