mirror of
https://github.com/git/git
synced 2024-10-30 14:03:28 +00:00
99f5b0845a
* cc/cherry-pick-ff: revert: fix tiny memory leak in cherry-pick --ff rebase -i: use new --ff cherry-pick option Documentation: describe new cherry-pick --ff option cherry-pick: add tests for new --ff option revert: add --ff option to allow fast forward when cherry-picking builtin/merge: make checkout_fast_forward() non static parse-options: add parse_options_concat() to concat options
977 lines
24 KiB
Bash
Executable file
977 lines
24 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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OPTIONS_KEEPDASHDASH=
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OPTIONS_SPEC="\
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git-rebase [-i] [options] [--] <upstream> [<branch>]
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git-rebase [-i] (--continue | --abort | --skip)
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--
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Available options are
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v,verbose display a diffstat of what changed upstream
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onto= rebase onto given branch instead of upstream
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p,preserve-merges try to recreate merges instead of ignoring them
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s,strategy= use the given merge strategy
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m,merge always used (no-op)
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i,interactive always used (no-op)
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Actions:
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continue continue rebasing process
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abort abort rebasing process and restore original branch
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skip skip current patch and continue rebasing process
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no-verify override pre-rebase hook from stopping the operation
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root rebase all reachable commmits up to the root(s)
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autosquash move commits that begin with squash!/fixup! under -i
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"
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. git-sh-setup
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require_work_tree
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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="$DOTEST"/rewritten-pending
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PRESERVE_MERGES=
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STRATEGY=
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ONTO=
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VERBOSE=
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OK_TO_SKIP_PRE_REBASE=
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REBASE_ROOT=
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AUTOSQUASH=
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GIT_CHERRY_PICK_HELP=" After resolving the conflicts,
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mark the corrected paths with 'git add <paths>', and
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run 'git rebase --continue'"
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export GIT_CHERRY_PICK_HELP
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warn () {
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echo "$*" >&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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require_clean_work_tree () {
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# test if working tree is dirty
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git rev-parse --verify HEAD > /dev/null &&
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git update-index --ignore-submodules --refresh &&
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git diff-files --quiet --ignore-submodules &&
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git diff-index --cached --quiet HEAD --ignore-submodules -- ||
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die "Working tree is dirty"
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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 "$TODO"
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count=$(sane_grep -c '^[^#]' < "$DONE")
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total=$(($count+$(sane_grep -c '^[^#]' < "$TODO")))
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if test "$last_count" != "$count"
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then
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last_count=$count
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printf "Rebasing (%d/%d)\r" $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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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 "$fast_forward" = t
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then
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cat "$DOTEST"/current-commit | 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
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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: $sha1"
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# redo merge
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author_script=$(get_author_ident_from_commit $sha1)
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eval "$author_script"
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msg="$(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 $STRATEGY -m "$msg" $new_parents
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then
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printf "%s\n" "$msg" > "$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" "$AMEND" || exit
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read command sha1 rest < "$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 $sha1
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author_script=$(get_author_ident_from_commit HEAD)
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echo "$author_script" > "$AUTHOR_SCRIPT"
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eval "$author_script"
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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 "$(peek_next_command)" in
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squash|s|fixup|f)
|
|
# This is an intermediate commit; its message will only be
|
|
# used in case of trouble. So use the long version:
|
|
do_with_author output git commit --no-verify -F "$SQUASH_MSG" ||
|
|
die_failed_squash $sha1 "$rest"
|
|
;;
|
|
*)
|
|
# This is the final command of this squash/fixup group
|
|
if test -f "$FIXUP_MSG"
|
|
then
|
|
do_with_author git commit --no-verify -F "$FIXUP_MSG" ||
|
|
die_failed_squash $sha1 "$rest"
|
|
else
|
|
cp "$SQUASH_MSG" "$GIT_DIR"/SQUASH_MSG || exit
|
|
rm -f "$GIT_DIR"/MERGE_MSG
|
|
do_with_author git commit --no-verify -e ||
|
|
die_failed_squash $sha1 "$rest"
|
|
fi
|
|
rm -f "$SQUASH_MSG" "$FIXUP_MSG"
|
|
;;
|
|
esac
|
|
record_in_rewritten $sha1
|
|
;;
|
|
*)
|
|
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
|
|
} &&
|
|
{
|
|
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 $HEADNAME."
|
|
|
|
exit
|
|
}
|
|
|
|
do_rest () {
|
|
while :
|
|
do
|
|
do_next
|
|
done
|
|
}
|
|
|
|
# skip picking commits whose parents are unchanged
|
|
skip_unnecessary_picks () {
|
|
fd=3
|
|
while read command sha1 rest
|
|
do
|
|
# fd=3 means we skip the command
|
|
case "$fd,$command,$(git rev-parse --verify --quiet $sha1^)" in
|
|
3,pick,"$ONTO"*|3,p,"$ONTO"*)
|
|
# pick a commit whose parent is current $ONTO -> skip
|
|
ONTO=$sha1
|
|
;;
|
|
3,#*|3,,*)
|
|
# copy comments
|
|
;;
|
|
*)
|
|
fd=1
|
|
;;
|
|
esac
|
|
echo "$command${sha1:+ }$sha1${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"
|
|
}
|
|
|
|
# check if no other options are set
|
|
is_standalone () {
|
|
test $# -eq 2 -a "$2" = '--' &&
|
|
test -z "$ONTO" &&
|
|
test -z "$PRESERVE_MERGES" &&
|
|
test -z "$STRATEGY" &&
|
|
test -z "$VERBOSE"
|
|
}
|
|
|
|
get_saved_options () {
|
|
test -d "$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 () {
|
|
sed -n -e 's/^pick \([0-9a-f]*\) \(squash\)! /\1 \2 /p' \
|
|
-e 's/^pick \([0-9a-f]*\) \(fixup\)! /\1 \2 /p' \
|
|
"$1" >"$1.sq"
|
|
test -s "$1.sq" || return
|
|
|
|
used=
|
|
while read pick sha1 message
|
|
do
|
|
case " $used" in
|
|
*" $sha1 "*) continue ;;
|
|
esac
|
|
echo "$pick $sha1 $message"
|
|
while read squash action msg
|
|
do
|
|
case "$message" in
|
|
"$msg"*)
|
|
echo "$action $squash $action! $msg"
|
|
used="$used$squash "
|
|
;;
|
|
esac
|
|
done <"$1.sq"
|
|
done >"$1.rearranged" <"$1"
|
|
cat "$1.rearranged" >"$1"
|
|
rm -f "$1.sq" "$1.rearranged"
|
|
}
|
|
|
|
LF='
|
|
'
|
|
parse_onto () {
|
|
case "$1" in
|
|
*...*)
|
|
if left=${1%...*} right=${1#*...} &&
|
|
onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
|
|
then
|
|
case "$onto" in
|
|
?*"$LF"?* | '')
|
|
exit 1 ;;
|
|
esac
|
|
echo "$onto"
|
|
exit 0
|
|
fi
|
|
esac
|
|
git rev-parse --verify "$1^0"
|
|
}
|
|
|
|
while test $# != 0
|
|
do
|
|
case "$1" in
|
|
--no-verify)
|
|
OK_TO_SKIP_PRE_REBASE=yes
|
|
;;
|
|
--verify)
|
|
;;
|
|
--continue)
|
|
is_standalone "$@" || usage
|
|
get_saved_options
|
|
comment_for_reflog continue
|
|
|
|
test -d "$DOTEST" || die "No interactive rebase running"
|
|
|
|
# Sanity check
|
|
git rev-parse --verify HEAD >/dev/null ||
|
|
die "Cannot read HEAD"
|
|
git update-index --ignore-submodules --refresh &&
|
|
git diff-files --quiet --ignore-submodules ||
|
|
die "Working tree is dirty"
|
|
|
|
# do we have anything to commit?
|
|
if git diff-index --cached --quiet --ignore-submodules HEAD --
|
|
then
|
|
: Nothing to commit -- skip this
|
|
else
|
|
. "$AUTHOR_SCRIPT" ||
|
|
die "Cannot find the author identity"
|
|
amend=
|
|
if test -f "$AMEND"
|
|
then
|
|
amend=$(git rev-parse --verify HEAD)
|
|
test "$amend" = $(cat "$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 "$MSG" -e || {
|
|
test -n "$amend" && git reset --soft $amend
|
|
die "Could not commit staged changes."
|
|
}
|
|
fi
|
|
|
|
record_in_rewritten "$(cat "$DOTEST"/stopped-sha)"
|
|
|
|
require_clean_work_tree
|
|
do_rest
|
|
;;
|
|
--abort)
|
|
is_standalone "$@" || usage
|
|
get_saved_options
|
|
comment_for_reflog abort
|
|
|
|
git rerere clear
|
|
test -d "$DOTEST" || die "No interactive rebase running"
|
|
|
|
HEADNAME=$(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)
|
|
is_standalone "$@" || usage
|
|
get_saved_options
|
|
comment_for_reflog skip
|
|
|
|
git rerere clear
|
|
test -d "$DOTEST" || die "No interactive rebase running"
|
|
|
|
output git reset --hard && do_rest
|
|
;;
|
|
-s)
|
|
case "$#,$1" in
|
|
*,*=*)
|
|
STRATEGY="-s "$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
|
|
1,*)
|
|
usage ;;
|
|
*)
|
|
STRATEGY="-s $2"
|
|
shift ;;
|
|
esac
|
|
;;
|
|
-m)
|
|
# we use merge anyway
|
|
;;
|
|
-v)
|
|
VERBOSE=t
|
|
;;
|
|
-p)
|
|
PRESERVE_MERGES=t
|
|
;;
|
|
-i)
|
|
# yeah, we know
|
|
;;
|
|
--root)
|
|
REBASE_ROOT=t
|
|
;;
|
|
--autosquash)
|
|
AUTOSQUASH=t
|
|
;;
|
|
--onto)
|
|
shift
|
|
ONTO=$(parse_onto "$1") ||
|
|
die "Does not point to a valid commit: $1"
|
|
;;
|
|
--)
|
|
shift
|
|
test -z "$REBASE_ROOT" -a $# -ge 1 -a $# -le 2 ||
|
|
test ! -z "$REBASE_ROOT" -a $# -le 1 || usage
|
|
test -d "$DOTEST" &&
|
|
die "Interactive rebase already started"
|
|
|
|
git var GIT_COMMITTER_IDENT >/dev/null ||
|
|
die "You need to set your committer info first"
|
|
|
|
if test -z "$REBASE_ROOT"
|
|
then
|
|
UPSTREAM_ARG="$1"
|
|
UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
|
|
test -z "$ONTO" && ONTO=$UPSTREAM
|
|
shift
|
|
else
|
|
UPSTREAM=
|
|
UPSTREAM_ARG=--root
|
|
test -z "$ONTO" &&
|
|
die "You must specify --onto when using --root"
|
|
fi
|
|
run_pre_rebase_hook "$UPSTREAM_ARG" "$@"
|
|
|
|
comment_for_reflog start
|
|
|
|
require_clean_work_tree
|
|
|
|
if test ! -z "$1"
|
|
then
|
|
output git show-ref --verify --quiet "refs/heads/$1" ||
|
|
die "Invalid branchname: $1"
|
|
output git checkout "$1" ||
|
|
die "Could not checkout $1"
|
|
fi
|
|
|
|
HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?"
|
|
mkdir "$DOTEST" || die "Could not create temporary $DOTEST"
|
|
|
|
: > "$DOTEST"/interactive || die "Could not mark as interactive"
|
|
git symbolic-ref HEAD > "$DOTEST"/head-name 2> /dev/null ||
|
|
echo "detached HEAD" > "$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 \
|
|
$REVISIONS | \
|
|
sed -n "s/^>//p" | while read shortsha1 rest
|
|
do
|
|
if test t != "$PRESERVE_MERGES"
|
|
then
|
|
echo "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
|
|
echo "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 $SHORTONTO
|
|
#
|
|
# Commands:
|
|
# p, pick = use commit
|
|
# r, reword = use commit, but edit the commit message
|
|
# e, edit = use commit, but stop for amending
|
|
# s, squash = use commit, but meld into previous commit
|
|
# f, fixup = like "squash", but discard this commit's log message
|
|
#
|
|
# If you remove a line here THAT COMMIT WILL BE LOST.
|
|
# However, if you remove everything, the rebase will be aborted.
|
|
#
|
|
EOF
|
|
|
|
has_action "$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" || skip_unnecessary_picks
|
|
|
|
git update-ref ORIG_HEAD $HEAD
|
|
output git checkout $ONTO && do_rest
|
|
;;
|
|
esac
|
|
shift
|
|
done
|