71786f54c4
Remove the parsing and validation of references (onto, upstream, branch) from git-rebase--interactive.sh and rely on the information exported from git-rebase.sh. By using the parsing of the --onto parameter in git-rebase.sh, this improves the error message when the parameter is invalid. Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
912 lines
23 KiB
Bash
Executable File
912 lines
23 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2006 Johannes E. Schindelin
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# SHORT DESCRIPTION
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#
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# This script makes it easy to fix up commits in the middle of a series,
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# and rearrange commits.
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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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. git-sh-setup
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dotest="$GIT_DIR/rebase-merge"
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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 $done.
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todo="$dotest"/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="$dotest"/done
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# The commit message that is planned to be used for any changes that
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# need to be committed following a user interaction.
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msg="$dotest"/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 $count is the number of commits whose messages have been
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# written to the file so far (including the initial "pick" commit).
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# Each time that a commit message is processed, this line is read and
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# updated. It is deleted just before the combined commit is made.
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squash_msg="$dotest"/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="$dotest"/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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# $upstream. They are not necessarily rewritten, but their children
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# might be. This ensures that commits on merged, but otherwise
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# unrelated side branches are left alone. (Think "X" in the man page's
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# example.)
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rewritten="$dotest"/rewritten
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dropped="$dotest"/dropped
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# A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
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# GIT_AUTHOR_DATE that will be used for the commit that is currently
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# being rebased.
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author_script="$dotest"/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="$dotest"/amend
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# For the post-rewrite hook, we make a list of rewritten commits and
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# their new sha1s. The rewritten-pending list keeps the sha1s of
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# commits that have been processed, but not committed yet,
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# e.g. because they are waiting for a 'squash' command.
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rewritten_list="$dotest"/rewritten-list
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rewritten_pending="$dotest"/rewritten-pending
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GIT_CHERRY_PICK_HELP="\
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hint: after resolving the conflicts, mark the corrected paths
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hint: with 'git add <paths>' and run 'git rebase --continue'"
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export GIT_CHERRY_PICK_HELP
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warn () {
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printf '%s\n' "$*" >&2
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}
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output () {
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case "$verbose" in
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'')
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output=$("$@" 2>&1 )
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status=$?
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test $status != 0 && printf "%s\n" "$output"
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return $status
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;;
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*)
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"$@"
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;;
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esac
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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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run_pre_rebase_hook () {
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if test -z "$ok_to_skip_pre_rebase" &&
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test -x "$GIT_DIR/hooks/pre-rebase"
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then
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"$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || {
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echo >&2 "The pre-rebase hook refused to rebase."
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exit 1
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}
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fi
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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 "$todo"
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new_count=$(sane_grep -c '^[^#]' < "$done")
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total=$(($new_count+$(sane_grep -c '^[^#]' < "$todo")))
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if test "$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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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 "$1^!"
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;;
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*)
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echo "Root commit"
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;;
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esac > "$dotest"/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 "$1" > "$dotest"/stopped-sha
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make_patch "$1"
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git rerere
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die "$2"
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}
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die_abort () {
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rm -rf "$dotest"
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die "$1"
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}
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has_action () {
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sane_grep '^[^#]' "$1" >/dev/null
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}
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# Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
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# GIT_AUTHOR_DATE exported from the current environment.
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do_with_author () {
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(
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export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
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"$@"
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)
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}
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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: $sha1"
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test -d "$rewritten" &&
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pick_one_preserving_merges "$@" && return
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if test -n "$rebase_root"
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then
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output git cherry-pick "$@"
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return
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fi
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output git cherry-pick $ff "$@"
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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 $sha1)
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if test -f "$dotest"/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"/$current_commit
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done <"$dotest"/current-commit
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rm "$dotest"/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 $sha1 >> "$dotest"/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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if ! do_with_author output \
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git merge ${strategy:+-s $strategy} -m \
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"$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 git cherry-pick "$@" ||
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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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echo "# 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 $fixup_msg"
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count=2
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{
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echo "# This is a combination of 2 commits."
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echo "# The first commit's message is:"
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echo
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cat "$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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echo "# 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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echo "# The $(nth_string $count) commit message will be skipped:"
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echo
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commit_message $2 | sed -e 's/^/# /'
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;;
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esac >>"$squash_msg"
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}
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peek_next_command () {
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sed -n -e "/^#/d" -e '/^$/d' -e "s/ .*//p" -e "q" < "$todo"
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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_next () {
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rm -f "$msg" "$author_script" "$amend" || exit
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read -r command sha1 rest < "$todo"
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case "$command" in
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'#'*|''|noop)
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mark_action_done
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;;
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pick|p)
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comment_for_reflog pick
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mark_action_done
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pick_one $sha1 ||
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die_with_patch $sha1 "Could not apply $sha1... $rest"
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record_in_rewritten $sha1
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;;
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reword|r)
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comment_for_reflog reword
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mark_action_done
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pick_one $sha1 ||
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die_with_patch $sha1 "Could not apply $sha1... $rest"
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git commit --amend --no-post-rewrite
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record_in_rewritten $sha1
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;;
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edit|e)
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comment_for_reflog edit
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mark_action_done
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pick_one $sha1 ||
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die_with_patch $sha1 "Could not apply $sha1... $rest"
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echo "$sha1" > "$dotest"/stopped-sha
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make_patch $sha1
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git rev-parse --verify HEAD > "$amend"
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warn "Stopped at $sha1... $rest"
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warn "You can amend the commit now, with"
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warn
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warn " git commit --amend"
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warn
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warn "Once you are satisfied with your changes, run"
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warn
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warn " git rebase --continue"
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warn
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exit 0
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;;
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squash|s|fixup|f)
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case "$command" in
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squash|s)
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squash_style=squash
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;;
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fixup|f)
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squash_style=fixup
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;;
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esac
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comment_for_reflog $squash_style
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test -f "$done" && has_action "$done" ||
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die "Cannot '$squash_style' without a previous commit"
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mark_action_done
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update_squash_messages $squash_style $sha1
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author_script_content=$(get_author_ident_from_commit HEAD)
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echo "$author_script_content" > "$author_script"
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eval "$author_script_content"
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output git reset --soft HEAD^
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pick_one -n $sha1 || die_failed_squash $sha1 "$rest"
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case "$(peek_next_command)" in
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squash|s|fixup|f)
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# This is an intermediate commit; its message will only be
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# used in case of trouble. So use the long version:
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do_with_author output git commit --no-verify -F "$squash_msg" ||
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die_failed_squash $sha1 "$rest"
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;;
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*)
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# This is the final command of this squash/fixup group
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if test -f "$fixup_msg"
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then
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do_with_author git commit --no-verify -F "$fixup_msg" ||
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die_failed_squash $sha1 "$rest"
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else
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cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit
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rm -f "$GIT_DIR"/MERGE_MSG
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do_with_author git commit --no-verify -e ||
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die_failed_squash $sha1 "$rest"
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fi
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rm -f "$squash_msg" "$fixup_msg"
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;;
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esac
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record_in_rewritten $sha1
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;;
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x|"exec")
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read -r command rest < "$todo"
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mark_action_done
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printf 'Executing: %s\n' "$rest"
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# "exec" command doesn't take a sha1 in the todo-list.
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# => can't just use $sha1 here.
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git rev-parse --verify HEAD > "$dotest"/stopped-sha
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${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution
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status=$?
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if test "$status" -ne 0
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then
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warn "Execution failed: $rest"
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warn "You can fix the problem, and then run"
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warn
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warn " git rebase --continue"
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warn
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exit "$status"
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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 $rest"
|
|
if git rev-parse --verify -q "$sha1" >/dev/null
|
|
then
|
|
die_with_patch $sha1 "Please fix this in the file $todo."
|
|
else
|
|
die "Please fix this in the file $todo."
|
|
fi
|
|
;;
|
|
esac
|
|
test -s "$todo" && return
|
|
|
|
comment_for_reflog finish &&
|
|
headname=$(cat "$dotest"/head-name) &&
|
|
oldhead=$(cat "$dotest"/head) &&
|
|
shortonto=$(git rev-parse --short $(cat "$dotest"/onto)) &&
|
|
newhead=$(git rev-parse HEAD) &&
|
|
case $headname in
|
|
refs/*)
|
|
message="$GIT_REFLOG_ACTION: $headname onto $shortonto" &&
|
|
git update-ref -m "$message" $headname $newhead $oldhead &&
|
|
git symbolic-ref HEAD $headname
|
|
;;
|
|
esac && {
|
|
test ! -f "$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 $headname."
|
|
|
|
exit
|
|
}
|
|
|
|
do_rest () {
|
|
while :
|
|
do
|
|
do_next
|
|
done
|
|
}
|
|
|
|
# skip picking commits whose parents are unchanged
|
|
skip_unnecessary_picks () {
|
|
fd=3
|
|
while read -r command rest
|
|
do
|
|
# fd=3 means we skip the command
|
|
case "$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 "$onto"
|
|
;;
|
|
esac ||
|
|
die "Could not skip unnecessary pick commands"
|
|
}
|
|
|
|
get_saved_options () {
|
|
test -d "$rewritten" && preserve_merges=t
|
|
test -f "$dotest"/strategy && strategy="$(cat "$dotest"/strategy)"
|
|
test -f "$dotest"/verbose && verbose=t
|
|
test -f "$dotest"/rebase-root && rebase_root=t
|
|
}
|
|
|
|
# Rearrange the todo list that has both "pick sha1 msg" and
|
|
# "pick sha1 fixup!/squash! msg" appears in it so that the latter
|
|
# comes immediately after the former, and change "pick" to
|
|
# "fixup"/"squash".
|
|
rearrange_squash () {
|
|
# extract fixup!/squash! lines and resolve any referenced sha1's
|
|
while read -r pick sha1 message
|
|
do
|
|
case "$message" in
|
|
"squash! "*|"fixup! "*)
|
|
action="${message%%!*}"
|
|
rest="${message#*! }"
|
|
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 -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_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 $emit = 1; then
|
|
printf '%s\n' "$action $squash $action! $msg_content"
|
|
used="$used$squash "
|
|
fi
|
|
done <"$1.sq"
|
|
done >"$1.rearranged" <"$1"
|
|
cat "$1.rearranged" >"$1"
|
|
rm -f "$1.sq" "$1.rearranged"
|
|
}
|
|
|
|
case "$action" in
|
|
continue)
|
|
get_saved_options
|
|
comment_for_reflog continue
|
|
|
|
# Sanity check
|
|
git rev-parse --verify HEAD >/dev/null ||
|
|
die "Cannot read HEAD"
|
|
git update-index --ignore-submodules --refresh &&
|
|
git diff-files --quiet --ignore-submodules ||
|
|
die "Working tree is dirty"
|
|
|
|
# do we have anything to commit?
|
|
if git diff-index --cached --quiet --ignore-submodules HEAD --
|
|
then
|
|
: Nothing to commit -- skip this
|
|
else
|
|
. "$author_script" ||
|
|
die "Cannot find the author identity"
|
|
current_head=
|
|
if test -f "$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."
|
|
git reset --soft HEAD^ ||
|
|
die "Cannot rewind the HEAD"
|
|
fi
|
|
do_with_author git commit --no-verify -F "$msg" -e || {
|
|
test -n "$current_head" && git reset --soft $current_head
|
|
die "Could not commit staged changes."
|
|
}
|
|
fi
|
|
|
|
record_in_rewritten "$(cat "$dotest"/stopped-sha)"
|
|
|
|
require_clean_work_tree "rebase"
|
|
do_rest
|
|
;;
|
|
abort)
|
|
get_saved_options
|
|
comment_for_reflog abort
|
|
|
|
git rerere clear
|
|
|
|
headname=$(cat "$dotest"/head-name)
|
|
head=$(cat "$dotest"/head)
|
|
case $headname in
|
|
refs/*)
|
|
git symbolic-ref HEAD $headname
|
|
;;
|
|
esac &&
|
|
output git reset --hard $head &&
|
|
rm -rf "$dotest"
|
|
exit
|
|
;;
|
|
skip)
|
|
get_saved_options
|
|
comment_for_reflog skip
|
|
|
|
git rerere clear
|
|
|
|
output git reset --hard && do_rest
|
|
;;
|
|
esac
|
|
|
|
git var GIT_COMMITTER_IDENT >/dev/null ||
|
|
die "You need to set your committer info first"
|
|
|
|
require_clean_work_tree "rebase" "Please commit or stash them."
|
|
|
|
run_pre_rebase_hook "$upstream_arg" "$@"
|
|
|
|
comment_for_reflog start
|
|
|
|
if test ! -z "$switch_to"
|
|
then
|
|
output git checkout "$switch_to" -- ||
|
|
die "Could not checkout $switch_to"
|
|
fi
|
|
|
|
head=$(git rev-parse --verify HEAD) || die "No HEAD?"
|
|
mkdir "$dotest" || die "Could not create temporary $dotest"
|
|
|
|
: > "$dotest"/interactive || die "Could not mark as interactive"
|
|
echo "$head_name" > "$dotest"/head-name
|
|
|
|
echo $head > "$dotest"/head
|
|
case "$rebase_root" in
|
|
'')
|
|
rm -f "$dotest"/rebase-root ;;
|
|
*)
|
|
: >"$dotest"/rebase-root ;;
|
|
esac
|
|
echo $onto > "$dotest"/onto
|
|
test -z "$strategy" || echo "$strategy" > "$dotest"/strategy
|
|
test t = "$verbose" && : > "$dotest"/verbose
|
|
if test t = "$preserve_merges"
|
|
then
|
|
if test -z "$rebase_root"
|
|
then
|
|
mkdir "$rewritten" &&
|
|
for c in $(git merge-base --all $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=
|
|
first_after_upstream="$(git rev-list --reverse --first-parent $upstream..$head | head -n 1)"
|
|
else
|
|
merges_option="--no-merges --cherry-pick"
|
|
fi
|
|
|
|
shorthead=$(git rev-parse --short $head)
|
|
shortonto=$(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...$head
|
|
shortrevisions=$shortupstream..$shorthead
|
|
else
|
|
revisions=$onto...$head
|
|
shortrevisions=$shorthead
|
|
fi
|
|
git rev-list $merges_option --pretty=oneline --abbrev-commit \
|
|
--abbrev=7 --reverse --left-right --topo-order \
|
|
$revisions | \
|
|
sed -n "s/^>//p" |
|
|
while read -r shortsha1 rest
|
|
do
|
|
if test t != "$preserve_merges"
|
|
then
|
|
printf '%s\n' "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 -a \( $p != $onto -o $sha1 = $first_after_upstream \)
|
|
then
|
|
preserve=f
|
|
fi
|
|
done
|
|
else
|
|
preserve=f
|
|
fi
|
|
if test f = "$preserve"
|
|
then
|
|
touch "$rewritten"/$sha1
|
|
printf '%s\n' "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 $revisions --left-right --cherry-pick | \
|
|
sed -n "s/^>//p" > "$dotest"/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 "$rev" "$dotest"/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 "$todo"
|
|
cat >> "$todo" << EOF
|
|
|
|
# Rebase $shortrevisions onto $shortonto
|
|
#
|
|
# Commands:
|
|
# p, pick = use commit
|
|
# r, reword = use commit, but edit the commit message
|
|
# e, edit = use commit, but stop for amending
|
|
# s, squash = use commit, but meld into previous commit
|
|
# f, fixup = like "squash", but discard this commit's log message
|
|
# x, exec = run command (the rest of the line) using shell
|
|
#
|
|
# If you remove a line here THAT COMMIT WILL BE LOST.
|
|
# However, if you remove everything, the rebase will be aborted.
|
|
#
|
|
EOF
|
|
|
|
has_action "$todo" ||
|
|
die_abort "Nothing to do"
|
|
|
|
cp "$todo" "$todo".backup
|
|
git_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
|
|
|
|
output git checkout $onto || die_abort "could not detach HEAD"
|
|
git update-ref ORIG_HEAD $head
|
|
do_rest
|