1301 lines
33 KiB
Bash
1301 lines
33 KiB
Bash
# This shell script fragment is sourced by git-rebase to implement
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# its interactive mode. "git rebase --interactive" makes it easy
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# to fix up commits in the middle of a series and rearrange commits.
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#
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# Copyright (c) 2006 Johannes E. Schindelin
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#
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# The original idea comes from Eric W. Biederman, in
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# http://article.gmane.org/gmane.comp.version-control.git/22407
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#
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# The file containing rebase commands, comments, and empty lines.
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# This file is created by "git rebase -i" then edited by the user. As
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# the lines are processed, they are removed from the front of this
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# file and written to the tail of $done.
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todo="$state_dir"/git-rebase-todo
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# The rebase command lines that have already been processed. A line
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# is moved here when it is first handled, before any associated user
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# actions.
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done="$state_dir"/done
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# The commit message that is planned to be used for any changes that
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# need to be committed following a user interaction.
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msg="$state_dir"/message
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# The file into which is accumulated the suggested commit message for
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# squash/fixup commands. When the first of a series of squash/fixups
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# is seen, the file is created and the commit message from the
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# previous commit and from the first squash/fixup commit are written
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# to it. The commit message for each subsequent squash/fixup commit
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# is appended to the file as it is processed.
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#
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# The first line of the file is of the form
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# # This is a combination of $count commits.
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# where $count is the number of commits whose messages have been
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# written to the file so far (including the initial "pick" commit).
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# Each time that a commit message is processed, this line is read and
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# updated. It is deleted just before the combined commit is made.
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squash_msg="$state_dir"/message-squash
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# If the current series of squash/fixups has not yet included a squash
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# command, then this file exists and holds the commit message of the
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# original "pick" commit. (If the series ends without a "squash"
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# command, then this can be used as the commit message of the combined
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# commit without opening the editor.)
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fixup_msg="$state_dir"/message-fixup
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# $rewritten is the name of a directory containing files for each
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# commit that is reachable by at least one merge base of $head and
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# $upstream. They are not necessarily rewritten, but their children
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# might be. This ensures that commits on merged, but otherwise
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# unrelated side branches are left alone. (Think "X" in the man page's
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# example.)
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rewritten="$state_dir"/rewritten
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dropped="$state_dir"/dropped
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end="$state_dir"/end
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msgnum="$state_dir"/msgnum
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# A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
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# GIT_AUTHOR_DATE that will be used for the commit that is currently
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# being rebased.
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author_script="$state_dir"/author-script
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# When an "edit" rebase command is being processed, the SHA1 of the
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# commit to be edited is recorded in this file. When "git rebase
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# --continue" is executed, if there are any staged changes then they
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# will be amended to the HEAD commit, but only provided the HEAD
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# commit is still the commit to be edited. When any other rebase
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# command is processed, this file is deleted.
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amend="$state_dir"/amend
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# For the post-rewrite hook, we make a list of rewritten commits and
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# their new sha1s. The rewritten-pending list keeps the sha1s of
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# commits that have been processed, but not committed yet,
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# e.g. because they are waiting for a 'squash' command.
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rewritten_list="$state_dir"/rewritten-list
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rewritten_pending="$state_dir"/rewritten-pending
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# Work around Git for Windows' Bash whose "read" does not strip CRLF
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# and leaves CR at the end instead.
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cr=$(printf "\015")
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strategy_args=
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if test -n "$do_merge"
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then
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strategy_args=${strategy:+--strategy=$strategy}
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eval '
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for strategy_opt in '"$strategy_opts"'
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do
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strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")"
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done
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'
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fi
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GIT_CHERRY_PICK_HELP="$resolvemsg"
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export GIT_CHERRY_PICK_HELP
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comment_char=$(git config --get core.commentchar 2>/dev/null | cut -c1)
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: ${comment_char:=#}
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warn () {
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printf '%s\n' "$*" >&2
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}
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# Output the commit message for the specified commit.
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commit_message () {
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git cat-file commit "$1" | sed "1,/^$/d"
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}
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orig_reflog_action="$GIT_REFLOG_ACTION"
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comment_for_reflog () {
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case "$orig_reflog_action" in
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''|rebase*)
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GIT_REFLOG_ACTION="rebase -i ($1)"
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export GIT_REFLOG_ACTION
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;;
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esac
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}
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last_count=
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mark_action_done () {
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sed -e 1q < "$todo" >> "$done"
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sed -e 1d < "$todo" >> "$todo".new
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mv -f "$todo".new "$todo"
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new_count=$(git stripspace --strip-comments <"$done" | wc -l)
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echo $new_count >"$msgnum"
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total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc -l)))
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echo $total >"$end"
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if test "$last_count" != "$new_count"
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then
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last_count=$new_count
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printf "Rebasing (%d/%d)\r" $new_count $total
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test -z "$verbose" || echo
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fi
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}
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# Put the last action marked done at the beginning of the todo list
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# again. If there has not been an action marked done yet, leave the list of
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# items on the todo list unchanged.
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reschedule_last_action () {
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tail -n 1 "$done" | cat - "$todo" >"$todo".new
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sed -e \$d <"$done" >"$done".new
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mv -f "$todo".new "$todo"
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mv -f "$done".new "$done"
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}
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append_todo_help () {
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git stripspace --comment-lines >>"$todo" <<\EOF
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Commands:
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p, pick = use commit
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r, reword = use commit, but edit the commit message
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e, edit = use commit, but stop for amending
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s, squash = use commit, but meld into previous commit
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f, fixup = like "squash", but discard this commit's log message
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x, exec = run command (the rest of the line) using shell
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d, drop = remove commit
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These lines can be re-ordered; they are executed from top to bottom.
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EOF
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if test $(get_missing_commit_check_level) = error
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then
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git stripspace --comment-lines >>"$todo" <<\EOF
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Do not remove any line. Use 'drop' explicitly to remove a commit.
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EOF
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else
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git stripspace --comment-lines >>"$todo" <<\EOF
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If you remove a line here THAT COMMIT WILL BE LOST.
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EOF
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fi
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}
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make_patch () {
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sha1_and_parents="$(git rev-list --parents -1 "$1")"
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case "$sha1_and_parents" in
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?*' '?*' '?*)
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git diff --cc $sha1_and_parents
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;;
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?*' '?*)
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git diff-tree -p "$1^!"
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;;
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*)
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echo "Root commit"
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;;
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esac > "$state_dir"/patch
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test -f "$msg" ||
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commit_message "$1" > "$msg"
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test -f "$author_script" ||
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get_author_ident_from_commit "$1" > "$author_script"
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}
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die_with_patch () {
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echo "$1" > "$state_dir"/stopped-sha
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make_patch "$1"
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git rerere
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die "$2"
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}
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exit_with_patch () {
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echo "$1" > "$state_dir"/stopped-sha
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make_patch $1
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git rev-parse --verify HEAD > "$amend"
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gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
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warn "You can amend the commit now, with"
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warn
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warn " git commit --amend $gpg_sign_opt_quoted"
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warn
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warn "Once you are satisfied with your changes, run"
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warn
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warn " git rebase --continue"
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warn
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exit $2
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}
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die_abort () {
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rm -rf "$state_dir"
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die "$1"
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}
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has_action () {
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test -n "$(git stripspace --strip-comments <"$1")"
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}
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is_empty_commit() {
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tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null ||
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die "$1: not a commit that can be picked")
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ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null ||
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ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904)
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test "$tree" = "$ptree"
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}
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is_merge_commit()
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{
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git rev-parse --verify --quiet "$1"^2 >/dev/null 2>&1
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}
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# Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
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# GIT_AUTHOR_DATE exported from the current environment.
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do_with_author () {
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(
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export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
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"$@"
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)
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}
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git_sequence_editor () {
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if test -z "$GIT_SEQUENCE_EDITOR"
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then
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GIT_SEQUENCE_EDITOR="$(git config sequence.editor)"
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if [ -z "$GIT_SEQUENCE_EDITOR" ]
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then
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GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $?
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fi
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fi
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eval "$GIT_SEQUENCE_EDITOR" '"$@"'
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}
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pick_one () {
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ff=--ff
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case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac
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case "$force_rebase" in '') ;; ?*) ff= ;; esac
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output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
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if is_empty_commit "$sha1"
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then
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empty_args="--allow-empty"
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fi
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test -d "$rewritten" &&
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pick_one_preserving_merges "$@" && return
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output eval git cherry-pick \
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${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
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"$strategy_args" $empty_args $ff "$@"
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# If cherry-pick dies it leaves the to-be-picked commit unrecorded. Reschedule
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# previous task so this commit is not lost.
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ret=$?
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case "$ret" in [01]) ;; *) reschedule_last_action ;; esac
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return $ret
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}
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pick_one_preserving_merges () {
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fast_forward=t
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case "$1" in
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-n)
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fast_forward=f
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sha1=$2
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;;
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*)
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sha1=$1
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;;
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esac
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sha1=$(git rev-parse $sha1)
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if test -f "$state_dir"/current-commit
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then
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if test "$fast_forward" = t
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then
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while read current_commit
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do
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git rev-parse HEAD > "$rewritten"/$current_commit
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done <"$state_dir"/current-commit
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rm "$state_dir"/current-commit ||
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die "Cannot write current commit's replacement sha1"
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fi
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fi
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echo $sha1 >> "$state_dir"/current-commit
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# rewrite parents; if none were rewritten, we can fast-forward.
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new_parents=
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pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)"
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if test "$pend" = " "
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then
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pend=" root"
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fi
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while [ "$pend" != "" ]
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do
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p=$(expr "$pend" : ' \([^ ]*\)')
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pend="${pend# $p}"
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if test -f "$rewritten"/$p
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then
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new_p=$(cat "$rewritten"/$p)
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# If the todo reordered commits, and our parent is marked for
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# rewriting, but hasn't been gotten to yet, assume the user meant to
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# drop it on top of the current HEAD
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if test -z "$new_p"
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then
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new_p=$(git rev-parse HEAD)
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fi
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test $p != $new_p && fast_forward=f
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case "$new_parents" in
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*$new_p*)
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;; # do nothing; that parent is already there
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*)
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new_parents="$new_parents $new_p"
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;;
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esac
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else
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if test -f "$dropped"/$p
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then
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fast_forward=f
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replacement="$(cat "$dropped"/$p)"
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test -z "$replacement" && replacement=root
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pend=" $replacement$pend"
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else
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new_parents="$new_parents $p"
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fi
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fi
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done
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case $fast_forward in
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t)
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output warn "Fast-forward to $sha1"
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output git reset --hard $sha1 ||
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die "Cannot fast-forward to $sha1"
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;;
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f)
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first_parent=$(expr "$new_parents" : ' \([^ ]*\)')
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if [ "$1" != "-n" ]
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then
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# detach HEAD to current parent
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output git checkout $first_parent 2> /dev/null ||
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die "Cannot move HEAD to $first_parent"
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fi
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case "$new_parents" in
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' '*' '*)
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test "a$1" = a-n && die "Refusing to squash a merge: $sha1"
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# redo merge
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author_script_content=$(get_author_ident_from_commit $sha1)
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eval "$author_script_content"
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msg_content="$(commit_message $sha1)"
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# No point in merging the first parent, that's HEAD
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new_parents=${new_parents# $first_parent}
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merge_args="--no-log --no-ff"
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if ! do_with_author output eval \
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'git merge ${gpg_sign_opt:+"$gpg_sign_opt"} \
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$merge_args $strategy_args -m "$msg_content" $new_parents'
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then
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printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG
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die_with_patch $sha1 "Error redoing merge $sha1"
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fi
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echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list"
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;;
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*)
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output eval git cherry-pick \
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${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
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"$strategy_args" "$@" ||
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die_with_patch $sha1 "Could not pick $sha1"
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;;
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esac
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;;
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esac
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}
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nth_string () {
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case "$1" in
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*1[0-9]|*[04-9]) echo "$1"th;;
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*1) echo "$1"st;;
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*2) echo "$1"nd;;
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*3) echo "$1"rd;;
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esac
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}
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update_squash_messages () {
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if test -f "$squash_msg"; then
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mv "$squash_msg" "$squash_msg".bak || exit
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count=$(($(sed -n \
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-e "1s/^. This is a combination of \(.*\) commits\./\1/p" \
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-e "q" < "$squash_msg".bak)+1))
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{
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printf '%s\n' "$comment_char This is a combination of $count commits."
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sed -e 1d -e '2,/^./{
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/^$/d
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}' <"$squash_msg".bak
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} >"$squash_msg"
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else
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commit_message HEAD > "$fixup_msg" || die "Cannot write $fixup_msg"
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count=2
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{
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printf '%s\n' "$comment_char This is a combination of 2 commits."
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printf '%s\n' "$comment_char The first commit's message is:"
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echo
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cat "$fixup_msg"
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} >"$squash_msg"
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fi
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case $1 in
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squash)
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rm -f "$fixup_msg"
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echo
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printf '%s\n' "$comment_char This is the $(nth_string $count) commit message:"
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echo
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commit_message $2
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;;
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fixup)
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echo
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printf '%s\n' "$comment_char The $(nth_string $count) commit message will be skipped:"
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echo
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# Change the space after the comment character to TAB:
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commit_message $2 | git stripspace --comment-lines | sed -e 's/ / /'
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;;
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esac >>"$squash_msg"
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}
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peek_next_command () {
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git stripspace --strip-comments <"$todo" | sed -n -e 's/ .*//p' -e q
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}
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# A squash/fixup has failed. Prepare the long version of the squash
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# commit message, then die_with_patch. This code path requires the
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# user to edit the combined commit message for all commits that have
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# been squashed/fixedup so far. So also erase the old squash
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# messages, effectively causing the combined commit to be used as the
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# new basis for any further squash/fixups. Args: sha1 rest
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die_failed_squash() {
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mv "$squash_msg" "$msg" || exit
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rm -f "$fixup_msg"
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cp "$msg" "$GIT_DIR"/MERGE_MSG || exit
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warn
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warn "Could not apply $1... $2"
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die_with_patch $1 ""
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}
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flush_rewritten_pending() {
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test -s "$rewritten_pending" || return
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newsha1="$(git rev-parse HEAD^0)"
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sed "s/$/ $newsha1/" < "$rewritten_pending" >> "$rewritten_list"
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rm -f "$rewritten_pending"
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}
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record_in_rewritten() {
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oldsha1="$(git rev-parse $1)"
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echo "$oldsha1" >> "$rewritten_pending"
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case "$(peek_next_command)" in
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squash|s|fixup|f)
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;;
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*)
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flush_rewritten_pending
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;;
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esac
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}
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do_pick () {
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if test "$(git rev-parse HEAD)" = "$squash_onto"
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then
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# Set the correct commit message and author info on the
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# sentinel root before cherry-picking the original changes
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# without committing (-n). Finally, update the sentinel again
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# to include these changes. If the cherry-pick results in a
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# conflict, this means our behaviour is similar to a standard
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# failed cherry-pick during rebase, with a dirty index to
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# resolve before manually running git commit --amend then git
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# rebase --continue.
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git commit --allow-empty --allow-empty-message --amend \
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--no-post-rewrite -n -q -C $1 &&
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pick_one -n $1 &&
|
|
git commit --allow-empty --allow-empty-message \
|
|
--amend --no-post-rewrite -n -q -C $1 \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
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" "$state_dir"/stopped-sha || exit
|
|
read -r command sha1 rest < "$todo"
|
|
case "$command" in
|
|
"$comment_char"*|''|noop|drop|d)
|
|
mark_action_done
|
|
;;
|
|
"$cr")
|
|
# Work around CR left by "read" (e.g. with Git for Windows' Bash).
|
|
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 ${gpg_sign_opt:+"$gpg_sign_opt"} || {
|
|
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" \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
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" \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
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 \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
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' "$rest"
|
|
"${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 < "$rewritten_list" ||
|
|
true # we don't care if this copying failed
|
|
} &&
|
|
hook="$(git rev-parse --git-path hooks/post-rewrite)"
|
|
if test -x "$hook" && test -s "$rewritten_list"; then
|
|
"$hook" rebase < "$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,"$comment_char"*|3,)
|
|
# copy comments
|
|
;;
|
|
*)
|
|
fd=1
|
|
;;
|
|
esac
|
|
printf '%s\n' "$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"
|
|
}
|
|
|
|
transform_todo_ids () {
|
|
while read -r command rest
|
|
do
|
|
case "$command" in
|
|
"$comment_char"* | exec)
|
|
# Be careful for oddball commands like 'exec'
|
|
# that do not have a SHA-1 at the beginning of $rest.
|
|
;;
|
|
*)
|
|
sha1=$(git rev-parse --verify --quiet "$@" ${rest%%[ ]*}) &&
|
|
rest="$sha1 ${rest#*[ ]}"
|
|
;;
|
|
esac
|
|
printf '%s\n' "$command${rest:+ }$rest"
|
|
done <"$todo" >"$todo.new" &&
|
|
mv -f "$todo.new" "$todo"
|
|
}
|
|
|
|
expand_todo_ids() {
|
|
transform_todo_ids
|
|
}
|
|
|
|
collapse_todo_ids() {
|
|
transform_todo_ids --short
|
|
}
|
|
|
|
# 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".
|
|
#
|
|
# Note that if the config has specified a custom instruction format
|
|
# each log message will be re-retrieved in order to normalize the
|
|
# autosquash arrangement
|
|
rearrange_squash () {
|
|
# extract fixup!/squash! lines and resolve any referenced sha1's
|
|
while read -r pick sha1 message
|
|
do
|
|
test -z "${format}" || message=$(git log -n 1 --format="%s" ${sha1})
|
|
case "$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
|
|
printf '%s %s %s %s\n' "$sha1" "$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 $message"
|
|
test -z "${format}" || message=$(git log -n 1 --format="%s" ${sha1})
|
|
used="$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 $emit = 1; then
|
|
if test -n "${format}"
|
|
then
|
|
msg_content=$(git log -n 1 --format="${format}" ${squash})
|
|
else
|
|
msg_content="$(echo "$msg_prefix" | sed "s/,/! /g")$msg_content"
|
|
fi
|
|
printf '%s\n' "$action $squash $msg_content"
|
|
used="$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"
|
|
}
|
|
|
|
# Check if the SHA-1 passed as an argument is a
|
|
# correct one, if not then print $2 in "$todo".badsha
|
|
# $1: the SHA-1 to test
|
|
# $2: the line number of the input
|
|
# $3: the input filename
|
|
check_commit_sha () {
|
|
badsha=0
|
|
if test -z $1
|
|
then
|
|
badsha=1
|
|
else
|
|
sha1_verif="$(git rev-parse --verify --quiet $1^{commit})"
|
|
if test -z $sha1_verif
|
|
then
|
|
badsha=1
|
|
fi
|
|
fi
|
|
|
|
if test $badsha -ne 0
|
|
then
|
|
line="$(sed -n -e "${2}p" "$3")"
|
|
warn "Warning: the SHA-1 is missing or isn't" \
|
|
"a commit in the following line:"
|
|
warn " - $line"
|
|
warn
|
|
fi
|
|
|
|
return $badsha
|
|
}
|
|
|
|
# prints the bad commits and bad commands
|
|
# from the todolist in stdin
|
|
check_bad_cmd_and_sha () {
|
|
retval=0
|
|
lineno=0
|
|
while read -r command rest
|
|
do
|
|
lineno=$(( $lineno + 1 ))
|
|
case $command in
|
|
"$comment_char"*|''|noop|x|exec)
|
|
# Doesn't expect a SHA-1
|
|
;;
|
|
"$cr")
|
|
# Work around CR left by "read" (e.g. with Git for
|
|
# Windows' Bash).
|
|
;;
|
|
pick|p|drop|d|reword|r|edit|e|squash|s|fixup|f)
|
|
if ! check_commit_sha "${rest%%[ ]*}" "$lineno" "$1"
|
|
then
|
|
retval=1
|
|
fi
|
|
;;
|
|
*)
|
|
line="$(sed -n -e "${lineno}p" "$1")"
|
|
warn "Warning: the command isn't recognized" \
|
|
"in the following line:"
|
|
warn " - $line"
|
|
warn
|
|
retval=1
|
|
;;
|
|
esac
|
|
done <"$1"
|
|
return $retval
|
|
}
|
|
|
|
# Print the list of the SHA-1 of the commits
|
|
# from stdin to stdout
|
|
todo_list_to_sha_list () {
|
|
git stripspace --strip-comments |
|
|
while read -r command sha1 rest
|
|
do
|
|
case $command in
|
|
"$comment_char"*|''|noop|x|"exec")
|
|
;;
|
|
*)
|
|
long_sha=$(git rev-list --no-walk "$sha1" 2>/dev/null)
|
|
printf "%s\n" "$long_sha"
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# Use warn for each line in stdin
|
|
warn_lines () {
|
|
while read -r line
|
|
do
|
|
warn " - $line"
|
|
done
|
|
}
|
|
|
|
# Switch to the branch in $into and notify it in the reflog
|
|
checkout_onto () {
|
|
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
|
|
output git checkout $onto || die_abort "could not detach HEAD"
|
|
git update-ref ORIG_HEAD $orig_head
|
|
}
|
|
|
|
get_missing_commit_check_level () {
|
|
check_level=$(git config --get rebase.missingCommitsCheck)
|
|
check_level=${check_level:-ignore}
|
|
# Don't be case sensitive
|
|
printf '%s' "$check_level" | tr 'A-Z' 'a-z'
|
|
}
|
|
|
|
# Check if the user dropped some commits by mistake
|
|
# Behaviour determined by rebase.missingCommitsCheck.
|
|
# Check if there is an unrecognized command or a
|
|
# bad SHA-1 in a command.
|
|
check_todo_list () {
|
|
raise_error=f
|
|
|
|
check_level=$(get_missing_commit_check_level)
|
|
|
|
case "$check_level" in
|
|
warn|error)
|
|
# Get the SHA-1 of the commits
|
|
todo_list_to_sha_list <"$todo".backup >"$todo".oldsha1
|
|
todo_list_to_sha_list <"$todo" >"$todo".newsha1
|
|
|
|
# Sort the SHA-1 and compare them
|
|
sort -u "$todo".oldsha1 >"$todo".oldsha1+
|
|
mv "$todo".oldsha1+ "$todo".oldsha1
|
|
sort -u "$todo".newsha1 >"$todo".newsha1+
|
|
mv "$todo".newsha1+ "$todo".newsha1
|
|
comm -2 -3 "$todo".oldsha1 "$todo".newsha1 >"$todo".miss
|
|
|
|
# Warn about missing commits
|
|
if test -s "$todo".miss
|
|
then
|
|
test "$check_level" = error && raise_error=t
|
|
|
|
warn "Warning: some commits may have been dropped" \
|
|
"accidentally."
|
|
warn "Dropped commits (newer to older):"
|
|
|
|
# Make the list user-friendly and display
|
|
opt="--no-walk=sorted --format=oneline --abbrev-commit --stdin"
|
|
git rev-list $opt <"$todo".miss | warn_lines
|
|
|
|
warn "To avoid this message, use \"drop\" to" \
|
|
"explicitly remove a commit."
|
|
warn
|
|
warn "Use 'git config rebase.missingCommitsCheck' to change" \
|
|
"the level of warnings."
|
|
warn "The possible behaviours are: ignore, warn, error."
|
|
warn
|
|
fi
|
|
;;
|
|
ignore)
|
|
;;
|
|
*)
|
|
warn "Unrecognized setting $check_level for option" \
|
|
"rebase.missingCommitsCheck. Ignoring."
|
|
;;
|
|
esac
|
|
|
|
if ! check_bad_cmd_and_sha "$todo"
|
|
then
|
|
raise_error=t
|
|
fi
|
|
|
|
if test $raise_error = t
|
|
then
|
|
# Checkout before the first commit of the
|
|
# rebase: this way git rebase --continue
|
|
# will work correctly as it expects HEAD to be
|
|
# placed before the commit of the next action
|
|
checkout_onto
|
|
|
|
warn "You can fix this with 'git rebase --edit-todo'."
|
|
die "Or you can abort the rebase with 'git rebase --abort'."
|
|
fi
|
|
}
|
|
|
|
# The whole contents of this file is run by dot-sourcing it from
|
|
# inside a shell function. It used to be that "return"s we see
|
|
# below were not inside any function, and expected to return
|
|
# to the function that dot-sourced us.
|
|
#
|
|
# However, FreeBSD /bin/sh misbehaves on such a construct and
|
|
# continues to run the statements that follow such a "return".
|
|
# As a work-around, we introduce an extra layer of a function
|
|
# here, and immediately call it after defining it.
|
|
git_rebase__interactive () {
|
|
|
|
case "$action" in
|
|
continue)
|
|
# do we have anything to commit?
|
|
if git diff-index --cached --quiet HEAD --
|
|
then
|
|
# Nothing to commit -- skip this commit
|
|
|
|
test ! -f "$GIT_DIR"/CHERRY_PICK_HEAD ||
|
|
rm "$GIT_DIR"/CHERRY_PICK_HEAD ||
|
|
die "Could not remove CHERRY_PICK_HEAD"
|
|
else
|
|
if ! test -f "$author_script"
|
|
then
|
|
gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
|
|
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 $gpg_sign_opt_quoted
|
|
|
|
If they are meant to go into a new commit, run:
|
|
|
|
git commit $gpg_sign_opt_quoted
|
|
|
|
In both case, once you're done, continue with:
|
|
|
|
git rebase --continue
|
|
"
|
|
fi
|
|
. "$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 \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
die "Could not commit staged changes."
|
|
else
|
|
do_with_author git commit --no-verify -F "$msg" -e \
|
|
${gpg_sign_opt:+"$gpg_sign_opt"} ||
|
|
die "Could not commit staged changes."
|
|
fi
|
|
fi
|
|
|
|
if test -r "$state_dir"/stopped-sha
|
|
then
|
|
record_in_rewritten "$(cat "$state_dir"/stopped-sha)"
|
|
fi
|
|
|
|
require_clean_work_tree "rebase"
|
|
do_rest
|
|
return 0
|
|
;;
|
|
skip)
|
|
git rerere clear
|
|
|
|
do_rest
|
|
return 0
|
|
;;
|
|
edit-todo)
|
|
git stripspace --strip-comments <"$todo" >"$todo".new
|
|
mv -f "$todo".new "$todo"
|
|
collapse_todo_ids
|
|
append_todo_help
|
|
git stripspace --comment-lines >>"$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 "$todo" ||
|
|
die "Could not execute editor"
|
|
expand_todo_ids
|
|
|
|
exit
|
|
;;
|
|
esac
|
|
|
|
git var GIT_COMMITTER_IDENT >/dev/null ||
|
|
die "You need to set your committer info first"
|
|
|
|
comment_for_reflog start
|
|
|
|
if test ! -z "$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
|
|
format=$(git config --get rebase.instructionFormat)
|
|
# the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse
|
|
git rev-list $merges_option --format="%m%H ${format:-%s}" \
|
|
--reverse --left-right --topo-order \
|
|
$revisions ${restrict_revision+^$restrict_revision} | \
|
|
sed -n "s/^>//p" |
|
|
while read -r sha1 rest
|
|
do
|
|
|
|
if test -z "$keep_empty" && is_empty_commit $sha1 && ! is_merge_commit $sha1
|
|
then
|
|
comment_out="$comment_char "
|
|
else
|
|
comment_out=
|
|
fi
|
|
|
|
if test t != "$preserve_merges"
|
|
then
|
|
printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
|
|
else
|
|
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 $sha1 $rest" >>"$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"/$rev && test "$(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"/$rev
|
|
sha1=$(git rev-list -1 $rev)
|
|
sane_grep -v "^[a-z][a-z]* $sha1" <"$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 "$todo"
|
|
|
|
todocount=$(git stripspace --strip-comments <"$todo" | wc -l)
|
|
todocount=${todocount##* }
|
|
|
|
cat >>"$todo" <<EOF
|
|
|
|
$comment_char Rebase $shortrevisions onto $shortonto ($todocount command(s))
|
|
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 "$todo" ||
|
|
return 2
|
|
|
|
cp "$todo" "$todo".backup
|
|
collapse_todo_ids
|
|
git_sequence_editor "$todo" ||
|
|
die_abort "Could not execute editor"
|
|
|
|
has_action "$todo" ||
|
|
return 2
|
|
|
|
check_todo_list
|
|
|
|
expand_todo_ids
|
|
|
|
test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks
|
|
|
|
checkout_onto
|
|
do_rest
|
|
|
|
}
|
|
# ... and then we call the whole thing.
|
|
git_rebase__interactive
|