| #!/bin/sh |
| # |
| # Copyright (c) 2006 Johannes E. Schindelin |
| |
| # SHORT DESCRIPTION |
| # |
| # This script makes it easy to fix up commits in the middle of a series, |
| # and rearrange commits. |
| # |
| # The original idea comes from Eric W. Biederman, in |
| # http://article.gmane.org/gmane.comp.version-control.git/22407 |
| # |
| # The file containing rebase commands, comments, and empty lines. |
| # This file is created by "git rebase -i" then edited by the user. As |
| # the lines are processed, they are removed from the front of this |
| # file and written to the tail of $done. |
| todo="$state_dir"/git-rebase-todo |
| |
| # The rebase command lines that have already been processed. A line |
| # is moved here when it is first handled, before any associated user |
| # actions. |
| done="$state_dir"/done |
| |
| # The commit message that is planned to be used for any changes that |
| # need to be committed following a user interaction. |
| msg="$state_dir"/message |
| |
| # The file into which is accumulated the suggested commit message for |
| # squash/fixup commands. When the first of a series of squash/fixups |
| # is seen, the file is created and the commit message from the |
| # previous commit and from the first squash/fixup commit are written |
| # to it. The commit message for each subsequent squash/fixup commit |
| # is appended to the file as it is processed. |
| # |
| # The first line of the file is of the form |
| # # This is a combination of $count commits. |
| # where $count is the number of commits whose messages have been |
| # written to the file so far (including the initial "pick" commit). |
| # Each time that a commit message is processed, this line is read and |
| # updated. It is deleted just before the combined commit is made. |
| squash_msg="$state_dir"/message-squash |
| |
| # If the current series of squash/fixups has not yet included a squash |
| # command, then this file exists and holds the commit message of the |
| # original "pick" commit. (If the series ends without a "squash" |
| # command, then this can be used as the commit message of the combined |
| # commit without opening the editor.) |
| fixup_msg="$state_dir"/message-fixup |
| |
| # $rewritten is the name of a directory containing files for each |
| # commit that is reachable by at least one merge base of $head and |
| # $upstream. They are not necessarily rewritten, but their children |
| # might be. This ensures that commits on merged, but otherwise |
| # unrelated side branches are left alone. (Think "X" in the man page's |
| # example.) |
| rewritten="$state_dir"/rewritten |
| |
| dropped="$state_dir"/dropped |
| |
| end="$state_dir"/end |
| msgnum="$state_dir"/msgnum |
| |
| # A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and |
| # GIT_AUTHOR_DATE that will be used for the commit that is currently |
| # being rebased. |
| author_script="$state_dir"/author-script |
| |
| # When an "edit" rebase command is being processed, the SHA1 of the |
| # commit to be edited is recorded in this file. When "git rebase |
| # --continue" is executed, if there are any staged changes then they |
| # will be amended to the HEAD commit, but only provided the HEAD |
| # commit is still the commit to be edited. When any other rebase |
| # command is processed, this file is deleted. |
| amend="$state_dir"/amend |
| |
| # For the post-rewrite hook, we make a list of rewritten commits and |
| # their new sha1s. The rewritten-pending list keeps the sha1s of |
| # commits that have been processed, but not committed yet, |
| # e.g. because they are waiting for a 'squash' command. |
| rewritten_list="$state_dir"/rewritten-list |
| rewritten_pending="$state_dir"/rewritten-pending |
| |
| strategy_args= |
| if test -n "$do_merge" |
| then |
| strategy_args=${strategy:+--strategy=$strategy} |
| eval ' |
| for strategy_opt in '"$strategy_opts"' |
| do |
| strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")" |
| done |
| ' |
| fi |
| |
| GIT_CHERRY_PICK_HELP="$resolvemsg" |
| export GIT_CHERRY_PICK_HELP |
| |
| comment_char=$(git config --get core.commentchar 2>/dev/null | cut -c1) |
| : ${comment_char:=#} |
| |
| warn () { |
| printf '%s\n' "$*" >&2 |
| } |
| |
| # Output the commit message for the specified commit. |
| commit_message () { |
| git cat-file commit "$1" | sed "1,/^$/d" |
| } |
| |
| orig_reflog_action="$GIT_REFLOG_ACTION" |
| |
| comment_for_reflog () { |
| case "$orig_reflog_action" in |
| ''|rebase*) |
| GIT_REFLOG_ACTION="rebase -i ($1)" |
| export GIT_REFLOG_ACTION |
| ;; |
| esac |
| } |
| |
| last_count= |
| mark_action_done () { |
| sed -e 1q < "$todo" >> "$done" |
| sed -e 1d < "$todo" >> "$todo".new |
| mv -f "$todo".new "$todo" |
| new_count=$(git stripspace --strip-comments <"$done" | wc -l) |
| echo $new_count >"$msgnum" |
| total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc -l))) |
| echo $total >"$end" |
| if test "$last_count" != "$new_count" |
| then |
| last_count=$new_count |
| printf "Rebasing (%d/%d)\r" $new_count $total |
| test -z "$verbose" || echo |
| fi |
| } |
| |
| append_todo_help () { |
| git stripspace --comment-lines >>"$todo" <<\EOF |
| |
| Commands: |
| p, pick = use commit |
| r, reword = use commit, but edit the commit message |
| e, edit = use commit, but stop for amending |
| s, squash = use commit, but meld into previous commit |
| f, fixup = like "squash", but discard this commit's log message |
| x, exec = run command (the rest of the line) using shell |
| |
| These lines can be re-ordered; they are executed from top to bottom. |
| |
| If you remove a line here THAT COMMIT WILL BE LOST. |
| EOF |
| } |
| |
| make_patch () { |
| sha1_and_parents="$(git rev-list --parents -1 "$1")" |
| case "$sha1_and_parents" in |
| ?*' '?*' '?*) |
| git diff --cc $sha1_and_parents |
| ;; |
| ?*' '?*) |
| git diff-tree -p "$1^!" |
| ;; |
| *) |
| echo "Root commit" |
| ;; |
| esac > "$state_dir"/patch |
| test -f "$msg" || |
| commit_message "$1" > "$msg" |
| test -f "$author_script" || |
| get_author_ident_from_commit "$1" > "$author_script" |
| } |
| |
| die_with_patch () { |
| echo "$1" > "$state_dir"/stopped-sha |
| make_patch "$1" |
| git rerere |
| die "$2" |
| } |
| |
| exit_with_patch () { |
| echo "$1" > "$state_dir"/stopped-sha |
| make_patch $1 |
| git rev-parse --verify HEAD > "$amend" |
| warn "You can amend the commit now, with" |
| warn |
| warn " git commit --amend" |
| warn |
| warn "Once you are satisfied with your changes, run" |
| warn |
| warn " git rebase --continue" |
| warn |
| exit $2 |
| } |
| |
| die_abort () { |
| rm -rf "$state_dir" |
| die "$1" |
| } |
| |
| has_action () { |
| test -n "$(git stripspace --strip-comments <"$1")" |
| } |
| |
| is_empty_commit() { |
| tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null || |
| die "$1: not a commit that can be picked") |
| ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null || |
| ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904) |
| test "$tree" = "$ptree" |
| } |
| |
| is_merge_commit() |
| { |
| git rev-parse --verify --quiet "$1"^2 >/dev/null 2>&1 |
| } |
| |
| # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and |
| # GIT_AUTHOR_DATE exported from the current environment. |
| do_with_author () { |
| ( |
| export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE |
| "$@" |
| ) |
| } |
| |
| git_sequence_editor () { |
| if test -z "$GIT_SEQUENCE_EDITOR" |
| then |
| GIT_SEQUENCE_EDITOR="$(git config sequence.editor)" |
| if [ -z "$GIT_SEQUENCE_EDITOR" ] |
| then |
| GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $? |
| fi |
| fi |
| |
| eval "$GIT_SEQUENCE_EDITOR" '"$@"' |
| } |
| |
| pick_one () { |
| ff=--ff |
| |
| case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac |
| case "$force_rebase" in '') ;; ?*) ff= ;; esac |
| output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1" |
| |
| if is_empty_commit "$sha1" |
| then |
| empty_args="--allow-empty" |
| fi |
| |
| test -d "$rewritten" && |
| pick_one_preserving_merges "$@" && return |
| output eval git cherry-pick "$strategy_args" $empty_args $ff "$@" |
| } |
| |
| pick_one_preserving_merges () { |
| fast_forward=t |
| case "$1" in |
| -n) |
| fast_forward=f |
| sha1=$2 |
| ;; |
| *) |
| sha1=$1 |
| ;; |
| esac |
| sha1=$(git rev-parse $sha1) |
| |
| if test -f "$state_dir"/current-commit |
| then |
| if test "$fast_forward" = t |
| then |
| while read current_commit |
| do |
| git rev-parse HEAD > "$rewritten"/$current_commit |
| done <"$state_dir"/current-commit |
| rm "$state_dir"/current-commit || |
| die "Cannot write current commit's replacement sha1" |
| fi |
| fi |
| |
| echo $sha1 >> "$state_dir"/current-commit |
| |
| # rewrite parents; if none were rewritten, we can fast-forward. |
| new_parents= |
| pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)" |
| if test "$pend" = " " |
| then |
| pend=" root" |
| fi |
| while [ "$pend" != "" ] |
| do |
| p=$(expr "$pend" : ' \([^ ]*\)') |
| pend="${pend# $p}" |
| |
| if test -f "$rewritten"/$p |
| then |
| new_p=$(cat "$rewritten"/$p) |
| |
| # If the todo reordered commits, and our parent is marked for |
| # rewriting, but hasn't been gotten to yet, assume the user meant to |
| # drop it on top of the current HEAD |
| if test -z "$new_p" |
| then |
| new_p=$(git rev-parse HEAD) |
| fi |
| |
| test $p != $new_p && fast_forward=f |
| case "$new_parents" in |
| *$new_p*) |
| ;; # do nothing; that parent is already there |
| *) |
| new_parents="$new_parents $new_p" |
| ;; |
| esac |
| else |
| if test -f "$dropped"/$p |
| then |
| fast_forward=f |
| replacement="$(cat "$dropped"/$p)" |
| test -z "$replacement" && replacement=root |
| pend=" $replacement$pend" |
| else |
| new_parents="$new_parents $p" |
| fi |
| fi |
| done |
| case $fast_forward in |
| t) |
| output warn "Fast-forward to $sha1" |
| output git reset --hard $sha1 || |
| die "Cannot fast-forward to $sha1" |
| ;; |
| f) |
| first_parent=$(expr "$new_parents" : ' \([^ ]*\)') |
| |
| if [ "$1" != "-n" ] |
| then |
| # detach HEAD to current parent |
| output git checkout $first_parent 2> /dev/null || |
| die "Cannot move HEAD to $first_parent" |
| fi |
| |
| case "$new_parents" in |
| ' '*' '*) |
| test "a$1" = a-n && die "Refusing to squash a merge: $sha1" |
| |
| # redo merge |
| author_script_content=$(get_author_ident_from_commit $sha1) |
| eval "$author_script_content" |
| msg_content="$(commit_message $sha1)" |
| # No point in merging the first parent, that's HEAD |
| new_parents=${new_parents# $first_parent} |
| if ! do_with_author output eval \ |
| 'git merge --no-ff $strategy_args -m "$msg_content" $new_parents' |
| then |
| printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG |
| die_with_patch $sha1 "Error redoing merge $sha1" |
| fi |
| echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list" |
| ;; |
| *) |
| output eval git cherry-pick "$strategy_args" "$@" || |
| die_with_patch $sha1 "Could not pick $sha1" |
| ;; |
| esac |
| ;; |
| esac |
| } |
| |
| nth_string () { |
| case "$1" in |
| *1[0-9]|*[04-9]) echo "$1"th;; |
| *1) echo "$1"st;; |
| *2) echo "$1"nd;; |
| *3) echo "$1"rd;; |
| esac |
| } |
| |
| update_squash_messages () { |
| if test -f "$squash_msg"; then |
| mv "$squash_msg" "$squash_msg".bak || exit |
| count=$(($(sed -n \ |
| -e "1s/^. This is a combination of \(.*\) commits\./\1/p" \ |
| -e "q" < "$squash_msg".bak)+1)) |
| { |
| printf '%s\n' "$comment_char This is a combination of $count commits." |
| sed -e 1d -e '2,/^./{ |
| /^$/d |
| }' <"$squash_msg".bak |
| } >"$squash_msg" |
| else |
| commit_message HEAD > "$fixup_msg" || die "Cannot write $fixup_msg" |
| count=2 |
| { |
| printf '%s\n' "$comment_char This is a combination of 2 commits." |
| printf '%s\n' "$comment_char The first commit's message is:" |
| echo |
| cat "$fixup_msg" |
| } >"$squash_msg" |
| fi |
| case $1 in |
| squash) |
| rm -f "$fixup_msg" |
| echo |
| printf '%s\n' "$comment_char This is the $(nth_string $count) commit message:" |
| echo |
| commit_message $2 |
| ;; |
| fixup) |
| echo |
| printf '%s\n' "$comment_char The $(nth_string $count) commit message will be skipped:" |
| echo |
| # Change the space after the comment character to TAB: |
| commit_message $2 | git stripspace --comment-lines | sed -e 's/ / /' |
| ;; |
| esac >>"$squash_msg" |
| } |
| |
| peek_next_command () { |
| git stripspace --strip-comments <"$todo" | sed -n -e 's/ .*//p' -e q |
| } |
| |
| # A squash/fixup has failed. Prepare the long version of the squash |
| # commit message, then die_with_patch. This code path requires the |
| # user to edit the combined commit message for all commits that have |
| # been squashed/fixedup so far. So also erase the old squash |
| # messages, effectively causing the combined commit to be used as the |
| # new basis for any further squash/fixups. Args: sha1 rest |
| die_failed_squash() { |
| mv "$squash_msg" "$msg" || exit |
| rm -f "$fixup_msg" |
| cp "$msg" "$GIT_DIR"/MERGE_MSG || exit |
| warn |
| warn "Could not apply $1... $2" |
| 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_pick () { |
| if test "$(git rev-parse HEAD)" = "$squash_onto" |
| then |
| # Set the correct commit message and author info on the |
| # sentinel root before cherry-picking the original changes |
| # without committing (-n). Finally, update the sentinel again |
| # to include these changes. If the cherry-pick results in a |
| # conflict, this means our behaviour is similar to a standard |
| # failed cherry-pick during rebase, with a dirty index to |
| # resolve before manually running git commit --amend then git |
| # rebase --continue. |
| git commit --allow-empty --allow-empty-message --amend \ |
| --no-post-rewrite -n -q -C $1 && |
| pick_one -n $1 && |
| git commit --allow-empty --allow-empty-message \ |
| --amend --no-post-rewrite -n -q -C $1 || |
| die_with_patch $1 "Could not apply $1... $2" |
| else |
| pick_one $1 || |
| die_with_patch $1 "Could not apply $1... $2" |
| fi |
| } |
| |
| do_next () { |
| rm -f "$msg" "$author_script" "$amend" || exit |
| read -r command sha1 rest < "$todo" |
| case "$command" in |
| "$comment_char"*|''|noop) |
| mark_action_done |
| ;; |
| pick|p) |
| comment_for_reflog pick |
| |
| mark_action_done |
| do_pick $sha1 "$rest" |
| record_in_rewritten $sha1 |
| ;; |
| reword|r) |
| comment_for_reflog reword |
| |
| mark_action_done |
| do_pick $sha1 "$rest" |
| git commit --amend --no-post-rewrite || { |
| warn "Could not amend commit after successfully picking $sha1... $rest" |
| warn "This is most likely due to an empty commit message, or the pre-commit hook" |
| warn "failed. If the pre-commit hook failed, you may need to resolve the issue before" |
| warn "you are able to reword the commit." |
| exit_with_patch $sha1 1 |
| } |
| record_in_rewritten $sha1 |
| ;; |
| edit|e) |
| comment_for_reflog edit |
| |
| mark_action_done |
| do_pick $sha1 "$rest" |
| warn "Stopped at $sha1... $rest" |
| exit_with_patch $sha1 0 |
| ;; |
| squash|s|fixup|f) |
| case "$command" in |
| squash|s) |
| squash_style=squash |
| ;; |
| fixup|f) |
| squash_style=fixup |
| ;; |
| esac |
| comment_for_reflog $squash_style |
| |
| test -f "$done" && has_action "$done" || |
| die "Cannot '$squash_style' without a previous commit" |
| |
| mark_action_done |
| update_squash_messages $squash_style $sha1 |
| author_script_content=$(get_author_ident_from_commit HEAD) |
| echo "$author_script_content" > "$author_script" |
| eval "$author_script_content" |
| if ! pick_one -n $sha1 |
| then |
| git rev-parse --verify HEAD >"$amend" |
| die_failed_squash $sha1 "$rest" |
| fi |
| case "$(peek_next_command)" in |
| squash|s|fixup|f) |
| # This is an intermediate commit; its message will only be |
| # used in case of trouble. So use the long version: |
| do_with_author output git commit --amend --no-verify -F "$squash_msg" || |
| die_failed_squash $sha1 "$rest" |
| ;; |
| *) |
| # This is the final command of this squash/fixup group |
| if test -f "$fixup_msg" |
| then |
| do_with_author git commit --amend --no-verify -F "$fixup_msg" || |
| die_failed_squash $sha1 "$rest" |
| else |
| cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit |
| rm -f "$GIT_DIR"/MERGE_MSG |
| do_with_author git commit --amend --no-verify -F "$GIT_DIR"/SQUASH_MSG -e || |
| die_failed_squash $sha1 "$rest" |
| fi |
| 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 $sha1 here. |
| git rev-parse --verify HEAD > "$state_dir"/stopped-sha |
| ${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution |
| status=$? |
| # Run in subshell because require_clean_work_tree can die. |
| dirty=f |
| (require_clean_work_tree "rebase" 2>/dev/null) || dirty=t |
| if test "$status" -ne 0 |
| then |
| warn "Execution failed: $rest" |
| test "$dirty" = f || |
| warn "and made changes to the index and/or the working tree" |
| |
| warn "You can fix the problem, and then run" |
| warn |
| warn " git rebase --continue" |
| warn |
| if test $status -eq 127 # command not found |
| then |
| status=1 |
| fi |
| exit "$status" |
| elif test "$dirty" = t |
| then |
| warn "Execution succeeded: $rest" |
| warn "but left changes to the index and/or the working tree" |
| warn "Commit or stash your changes, and then run" |
| warn |
| warn " git rebase --continue" |
| warn |
| exit 1 |
| fi |
| ;; |
| *) |
| warn "Unknown command: $command $sha1 $rest" |
| fixtodo="Please fix this using 'git rebase --edit-todo'." |
| if git rev-parse --verify -q "$sha1" >/dev/null |
| then |
| die_with_patch $sha1 "$fixtodo" |
| else |
| die "$fixtodo" |
| fi |
| ;; |
| esac |
| test -s "$todo" && return |
| |
| comment_for_reflog finish && |
| newhead=$(git rev-parse HEAD) && |
| case $head_name in |
| refs/*) |
| message="$GIT_REFLOG_ACTION: $head_name onto $onto" && |
| git update-ref -m "$message" $head_name $newhead $orig_head && |
| git symbolic-ref \ |
| -m "$GIT_REFLOG_ACTION: returning to $head_name" \ |
| HEAD $head_name |
| ;; |
| esac && { |
| test ! -f "$state_dir"/verbose || |
| git diff-tree --stat $orig_head..HEAD |
| } && |
| { |
| test -s "$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 && |
| warn "Successfully rebased and updated $head_name." |
| |
| return 1 # not failure; just to break the do_rest loop |
| } |
| |
| # can only return 0, when the infinite loop breaks |
| do_rest () { |
| while : |
| do |
| do_next || break |
| done |
| } |
| |
| # skip picking commits whose parents are unchanged |
| skip_unnecessary_picks () { |
| fd=3 |
| while read -r command rest |
| do |
| # fd=3 means we skip the command |
| case "$fd,$command" in |
| 3,pick|3,p) |
| # pick a commit whose parent is current $onto -> skip |
| sha1=${rest%% *} |
| case "$(git rev-parse --verify --quiet "$sha1"^)" in |
| "$onto"*) |
| onto=$sha1 |
| ;; |
| *) |
| fd=1 |
| ;; |
| esac |
| ;; |
| 3,#*|3,) |
| # copy comments |
| ;; |
| *) |
| fd=1 |
| ;; |
| esac |
| printf '%s\n' "$command${rest:+ }$rest" >&$fd |
| done <"$todo" >"$todo.new" 3>>"$done" && |
| mv -f "$todo".new "$todo" && |
| case "$(peek_next_command)" in |
| squash|s|fixup|f) |
| record_in_rewritten "$onto" |
| ;; |
| esac || |
| die "Could not skip unnecessary pick commands" |
| } |
| |
| # Rearrange the todo list that has both "pick sha1 msg" and |
| # "pick sha1 fixup!/squash! msg" appears in it so that the latter |
| # comes immediately after the former, and change "pick" to |
| # "fixup"/"squash". |
| rearrange_squash () { |
| # extract fixup!/squash! lines and resolve any referenced sha1's |
| while read -r pick sha1 message |
| do |
| case "$message" in |
| "squash! "*|"fixup! "*) |
| action="${message%%!*}" |
| rest=$message |
| prefix= |
| # skip all squash! or fixup! (but save for later) |
| while : |
| do |
| case "$rest" in |
| "squash! "*|"fixup! "*) |
| prefix="$prefix${rest%%!*}," |
| rest="${rest#*! }" |
| ;; |
| *) |
| break |
| ;; |
| esac |
| done |
| echo "$sha1 $action $prefix $rest" |
| # if it's a single word, try to resolve to a full sha1 and |
| # emit a second copy. This allows us to match on both message |
| # and on sha1 prefix |
| if test "${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 $prefix $fullsha" |
| fi |
| fi |
| esac |
| done >"$1.sq" <"$1" |
| test -s "$1.sq" || return |
| |
| used= |
| while read -r pick sha1 message |
| do |
| case " $used" in |
| *" $sha1 "*) continue ;; |
| esac |
| printf '%s\n' "$pick $sha1 $message" |
| used="$used$sha1 " |
| while read -r squash action msg_prefix msg_content |
| do |
| case " $used" in |
| *" $squash "*) continue ;; |
| esac |
| emit=0 |
| case "$action" in |
| +*) |
| action="${action#+}" |
| # full sha1 prefix test |
| case "$msg_content" in "$sha1"*) emit=1;; esac ;; |
| *) |
| # message prefix test |
| case "$message" in "$msg_content"*) emit=1;; esac ;; |
| esac |
| if test $emit = 1; then |
| real_prefix=$(echo "$msg_prefix" | sed "s/,/! /g") |
| printf '%s\n' "$action $squash ${real_prefix}$msg_content" |
| used="$used$squash " |
| fi |
| done <"$1.sq" |
| done >"$1.rearranged" <"$1" |
| cat "$1.rearranged" >"$1" |
| rm -f "$1.sq" "$1.rearranged" |
| } |
| |
| # Add commands after a pick or after a squash/fixup serie |
| # in the todo list. |
| add_exec_commands () { |
| { |
| first=t |
| while read -r insn rest |
| do |
| case $insn in |
| pick) |
| test -n "$first" || |
| printf "%s" "$cmd" |
| ;; |
| esac |
| printf "%s %s\n" "$insn" "$rest" |
| first= |
| done |
| printf "%s" "$cmd" |
| } <"$1" >"$1.new" && |
| mv "$1.new" "$1" |
| } |
| |
| case "$action" in |
| continue) |
| # do we have anything to commit? |
| if git diff-index --cached --quiet HEAD -- |
| then |
| : Nothing to commit -- skip this |
| else |
| if ! test -f "$author_script" |
| then |
| die "You have staged changes in your working tree. If these changes are meant to be |
| squashed into the previous commit, run: |
| |
| git commit --amend |
| |
| If they are meant to go into a new commit, run: |
| |
| git commit |
| |
| In both case, once you're done, continue with: |
| |
| git rebase --continue |
| " |
| fi |
| . "$author_script" || |
| die "Error trying to find the author identity to amend commit" |
| if test -f "$amend" |
| then |
| current_head=$(git rev-parse --verify HEAD) |
| test "$current_head" = $(cat "$amend") || |
| die "\ |
| You have uncommitted changes in your working tree. Please, commit them |
| first and then run 'git rebase --continue' again." |
| do_with_author git commit --amend --no-verify -F "$msg" -e || |
| die "Could not commit staged changes." |
| else |
| do_with_author git commit --no-verify -F "$msg" -e || |
| die "Could not commit staged changes." |
| fi |
| fi |
| |
| record_in_rewritten "$(cat "$state_dir"/stopped-sha)" |
| |
| require_clean_work_tree "rebase" |
| do_rest |
| return 0 |
| ;; |
| skip) |
| git rerere clear |
| |
| do_rest |
| return 0 |
| ;; |
| edit-todo) |
| git stripspace --strip-comments <"$todo" >"$todo".new |
| mv -f "$todo".new "$todo" |
| append_todo_help |
| git stripspace --comment-lines >>"$todo" <<\EOF |
| |
| You are editing the todo file of an ongoing interactive rebase. |
| To continue rebase after editing, run: |
| git rebase --continue |
| |
| EOF |
| |
| git_sequence_editor "$todo" || |
| die "Could not execute editor" |
| |
| exit |
| ;; |
| esac |
| |
| git var GIT_COMMITTER_IDENT >/dev/null || |
| die "You need to set your committer info first" |
| |
| comment_for_reflog start |
| |
| if test ! -z "$switch_to" |
| then |
| GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" |
| output git checkout "$switch_to" -- || |
| die "Could not checkout $switch_to" |
| |
| comment_for_reflog start |
| fi |
| |
| orig_head=$(git rev-parse --verify HEAD) || die "No HEAD?" |
| mkdir -p "$state_dir" || die "Could not create temporary $state_dir" |
| |
| : > "$state_dir"/interactive || die "Could not mark as interactive" |
| write_basic_state |
| if test t = "$preserve_merges" |
| then |
| if test -z "$rebase_root" |
| then |
| mkdir "$rewritten" && |
| for c in $(git merge-base --all $orig_head $upstream) |
| do |
| echo $onto > "$rewritten"/$c || |
| die "Could not init rewritten commits" |
| done |
| else |
| mkdir "$rewritten" && |
| echo $onto > "$rewritten"/root || |
| die "Could not init rewritten commits" |
| fi |
| # No cherry-pick because our first pass is to determine |
| # parents to rewrite and skipping dropped commits would |
| # prematurely end our probe |
| merges_option= |
| else |
| merges_option="--no-merges --cherry-pick" |
| fi |
| |
| shorthead=$(git rev-parse --short $orig_head) |
| shortonto=$(git rev-parse --short $onto) |
| if test -z "$rebase_root" |
| # this is now equivalent to ! -z "$upstream" |
| then |
| shortupstream=$(git rev-parse --short $upstream) |
| revisions=$upstream...$orig_head |
| shortrevisions=$shortupstream..$shorthead |
| else |
| revisions=$onto...$orig_head |
| shortrevisions=$shorthead |
| fi |
| git rev-list $merges_option --pretty=oneline --abbrev-commit \ |
| --abbrev=7 --reverse --left-right --topo-order \ |
| $revisions | \ |
| sed -n "s/^>//p" | |
| while read -r shortsha1 rest |
| do |
| |
| if test -z "$keep_empty" && is_empty_commit $shortsha1 && ! is_merge_commit $shortsha1 |
| then |
| comment_out="$comment_char " |
| else |
| comment_out= |
| fi |
| |
| if test t != "$preserve_merges" |
| then |
| printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo" |
| else |
| sha1=$(git rev-parse $shortsha1) |
| if test -z "$rebase_root" |
| then |
| preserve=t |
| for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) |
| do |
| if test -f "$rewritten"/$p |
| then |
| preserve=f |
| fi |
| done |
| else |
| preserve=f |
| fi |
| if test f = "$preserve" |
| then |
| touch "$rewritten"/$sha1 |
| printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo" |
| fi |
| fi |
| done |
| |
| # Watch for commits that been dropped by --cherry-pick |
| if test t = "$preserve_merges" |
| then |
| mkdir "$dropped" |
| # Save all non-cherry-picked changes |
| git rev-list $revisions --left-right --cherry-pick | \ |
| sed -n "s/^>//p" > "$state_dir"/not-cherry-picks |
| # Now all commits and note which ones are missing in |
| # not-cherry-picks and hence being dropped |
| git rev-list $revisions | |
| while read rev |
| do |
| if test -f "$rewritten"/$rev -a "$(sane_grep "$rev" "$state_dir"/not-cherry-picks)" = "" |
| then |
| # Use -f2 because if rev-list is telling us this commit is |
| # not worthwhile, we don't want to track its multiple heads, |
| # just the history of its first-parent for others that will |
| # be rebasing on top of it |
| git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev |
| short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev) |
| sane_grep -v "^[a-z][a-z]* $short" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo" |
| rm "$rewritten"/$rev |
| fi |
| done |
| fi |
| |
| test -s "$todo" || echo noop >> "$todo" |
| test -n "$autosquash" && rearrange_squash "$todo" |
| test -n "$cmd" && add_exec_commands "$todo" |
| |
| cat >>"$todo" <<EOF |
| |
| $comment_char Rebase $shortrevisions onto $shortonto |
| EOF |
| append_todo_help |
| git stripspace --comment-lines >>"$todo" <<\EOF |
| |
| However, if you remove everything, the rebase will be aborted. |
| |
| EOF |
| |
| if test -z "$keep_empty" |
| then |
| printf '%s\n' "$comment_char Note that empty commits are commented out" >>"$todo" |
| fi |
| |
| |
| has_action "$todo" || |
| die_abort "Nothing to do" |
| |
| cp "$todo" "$todo".backup |
| git_sequence_editor "$todo" || |
| die_abort "Could not execute editor" |
| |
| has_action "$todo" || |
| die_abort "Nothing to do" |
| |
| test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks |
| |
| GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" |
| output git checkout $onto || die_abort "could not detach HEAD" |
| git update-ref ORIG_HEAD $orig_head |
| do_rest |